STATOIL PETROLEUM AS Patent applications |
Patent application number | Title | Published |
20160123304 | WIND TURBINE CONTROL - A method of dynamically controlling a wind turbine having a rotor supporting a plurality of blades and a main bearing supporting the rotor, the method comprising detecting a load profile around the circumference of the main bearing, generating a control signal based on the detected load profile and dynamically adjusting the load profile of the main bearing using the control signal. | 05-05-2016 |
20160102783 | FAIRING AND METHOD - A fairing device for the reduction of vortex-induced vibrations or motions, and for minimizing the drag about a substantially cylindrical element immersed in a fluid medium, comprising; a fairing rotatably mounted about the cylindrical element, the fairing comprising a shell with a mainly cylindrical cross-sectional shape with an outer diameter (D) following the outer diameter of the cylindrical element from an upward stagnation point of 0 degrees to at least +/−90 degrees, and which at +/−90 degrees continues as two fin-like portions in an aft direction, whereby the fin-like portions are convexly curved aft of +/−90 degrees thus tapering towards each other and are defining a tail end opening or gap less than the fairing standoff height. A method for mounting, storage, and deployment of the fairing device is also disclosed. | 04-14-2016 |
20160091621 | ESTIMATING INTERVAL VELOCITIES - A method of estimating a velocity of a geological layer includes a. providing a first, initial model including an interval velocity associated with a subsurface location and an uncertainty associated with the interval velocity; b. providing data including an actual or approximated root-mean-square (RMS) velocity associated with a subsurface location and an uncertainty associated with the RMS velocity; and c. estimating a second model including an interval velocity associated with a subsurface location and an uncertainty associated with the interval velocity, based on the interval velocity and the uncertainty of the first model, and the RMS velocity and the uncertainty of the data. | 03-31-2016 |
20160077229 | METHOD OF ASSESSING HYDROCARBON SOURCE ROCK CANDIDATE - A method of assessing a hydrocarbon source rock candidate uses seismic data for a region of the Earth. The data are analysed to determine the presence, thickness and lateral extent of candidate source rock based on the knowledge of the seismic behaviour of hydrocarbon source rocks. An estimate is provided of the organic content of the candidate source rock from acoustic impedance. An estimate of the hydrocarbon generation potential of the candidate source rock is then provided from the thickness and lateral extent of the candidate source rock and from the estimate of the organic content. | 03-17-2016 |
20160077228 | IMPROVEMENTS IN DETERMINING SUB-SURFACE TEMPERATURE - There is described a technique for determining a temperature at a region below the surface of the Earth. In an embodiment, a time of travel of a seismic wave following the emission from a source into the earth is provided, and the travel time is used to estimate the temperature. In one example, a model based on the travel time and a further component, which may for example be based on heat flow and a constant of proportionality between seismic velocity and thermal conductivity, may be used to estimate the temperature. | 03-17-2016 |
20160075514 | METHOD OF STORING CO2 - The present invention relates to a method of storing CO | 03-17-2016 |
20160053594 | METHOD FOR CO2 EOR AND STORAGE AND USE THEREOF - A method of Enhanced Oil Recovery from oil zones in a subterranean geological formation, and from oil zones, the method comprising: a first injecting step of injecting a first composition comprising CO | 02-25-2016 |
20160047179 | INCREASING HYDROCARBON RECOVERY FROM RESERVOIRS - A method, system and apparatus for producing hydrocarbons from a low permeability reservoir formation. A wellbore ( | 02-18-2016 |
20160041287 | ACOUSTIC MEASUREMENT TOOL - An acoustic measurement tool comprises a transmitter for generating acoustic signals and at least one acoustic receiver spaced from the transmitter and configured to receive an acoustic signal, generated by the transmitter, and which has encountered a medium of interest. Moreover, at least one acoustic reference receiver is located adjacent the transmitter and is configured to receive an acoustic signal, generated by the transmitter, prior to the acoustic signal encountering the medium of interest. | 02-11-2016 |
20150369940 | Saturation Estimation Using mCSEM Data and Stochastic Petrophysical Modeling - A method for estimating saturation using mCSEM data and stochastic petrophysical models by quantifying the average water saturation in a reservoir given the transverse resistance (TR) obtained from mCSEM data, including the following steps: a) obtaining mCSEM survey data from a subsurface region of interest, b) performing an inversion of the obtained mCSEM data, c) subtracting a background resistivity trend from the mCSEM inversion data from the resistivity trend of the mCSEM inversion data from inside a hydrocarbon reservoir, d) estimating the location of an anomaly in the mCSEM inversion data, e) estimating the magnitude of the transverse resistance associated with an anomaly from the mCSEM inversion data, f) estimating an initial average reservoir saturation corresponding to transverse resistance using a stochastic petrophysical model and Monte Carlo simulation connecting reservoir parameters to transverse resistance, and g) integrating the obtained saturation distribution as a function of transverse resistances over the assumed distribution of transverse resistances to obtain a final estimation of the fluid saturation probability. | 12-24-2015 |
20150361782 | A METHOD OF PRESSURE TESTING A PLUGGED WELL - A method of plugging a well extending into a hydrocarbon bearing formation facilitates temporary or permanent abandonment of the well. The method includes forming two or more plugs within the well, the plugs being formed at longitudinally spaced apart locations whilst providing a fluid communication path from a region above the topmost plug to the or each space between adjacent plugs. This configuration facilitates pressure testing of one or more of the plugs by conducting fluid through said path. | 12-17-2015 |
20150361759 | A METHOD OF PLUGGING A WELL - A method of plugging a well extending into a hydrocarbon bearing formation fascilitates temporary or permanent abandonment of the well. The method includes detonating one or more explosive charges within a tubular or tubulars extending through the well in order to remove, fragment and or cut one or more sections of the tubulars around the entire circumference of the well to expose the surrounding formation or cement. The well is then filled in the region of the exposed surrounding formation or cement with a sealing material so as to form one or more plugs within the well to seal the well. | 12-17-2015 |
20150354343 | MEASURING SETTLING IN FLUID MIXTURES - A method and apparatus for measuring a property of settling of a first phase in a second fluid phase of a mixture. In order to measure the property of settling, the mixture may be contained in a chamber, an acoustic wave may be repeatedly passed vertically through the mixture, a transit time may be measured for each acoustic wave to traverse the mixture, and the property of settling using a change in the transit times of the acoustic waves may then be determined. In various embodiments, the property of settling can be a degree of settling. | 12-10-2015 |
20150322763 | GAS COMPRESSION SYSTEM - A gas compression system and a method of flow conditioning by a gas compression system are provided. A gas compression system includes a compact flow conditioner in a form of a flow conditioner tank and a combined multi-phase pump and compressor unit comprising an impeller configured to compress a mixture of gas and liquid, wherein the gas compression system is configured such that the gas and the liquid are separated in the flow conditioner tank, the separated gas and liquid are sucked up through the separate gas and liquid pipes and re-mixed again upstream of the impeller, and the liquid is distributed in a gas flow by Venturi effect, and wherein the Venturi effect is obtained by a constriction in the outlet pipe to the impeller, just upstream of the impeller. | 11-12-2015 |
20150322749 | GAS COMPRESSION SYSTEM - A combined multi-phase pump and compressor unit and a gas compression system are provided. The combined multi-phase pump and compressor unit functions on a centrifugal principle for transporting liquid and gas from a flow conditioner to a remote multi-phase receiving plant, wherein a rotating separator separates liquid and gas upstream of a compressor part of the combined multi-phase pump and compressor unit, wherein the separated liquid is collected in a rotating annulus in such a way that the liquid is given kinetic energy which is converted to pressure energy in a static system, and wherein the pressurized liquid bypasses the compressor part of the combined multi-phase pump and compressor unit, and then is re-mixed with the gas downstream of the combined multi-phase pump and compressor unit. | 11-12-2015 |
20150316668 | METHOD OF MODELLING A SUBTERRANEAN REGION OF THE EARTH - A method of modelling a subterranean region of the Earth at a first location comprises the steps of: providing geological data; selecting a plurality of facies; providing a distribution of rock physics probability with spatial dependencies; approximating the rock physics probability at the first location with at least one distribution per facies utilizing the spatial dependencies in the rock physics probability distribution; and performing a Bayesian inversion at the first location using the approximation of the rock physics probability distribution. The method may also employ a window comprising the first location and at least one further location. | 11-05-2015 |
20150290560 | METHOD AND SYSTEM FOR FLUID SEPARATION WITH AN INTEGRATED CONTROL SYSTEM - A system for separating an input fluid flow comprising gas and liquid into separate gas and liquid flows, the system comprising: a primary inline separator configured to receive said input fluid flow and to separate said input fluid flow into a primary separator liquid output flow and a primary separator gas output flow; at least one secondary inline separator connected downstream from said primary inline separator to receive at least one of said primary separator output flows and to separate said received primary separator output flow into a secondary separator liquid output flow and a secondary separator gas output flow; a system gas outlet connected to at least one of said primary and secondary separators to output said respective gas output flow; a system liquid outlet connected to at least one of said primary and secondary separators to output said respective liquid output flow; and a control system configured to regulate flow through said primary and secondary separators to ensure a flow of gas from said gas output with a maximum amount of liquid carry-over and a flow of liquid from said liquid outlet with a maximum amount of entrained gas. | 10-15-2015 |
20150275602 | APPARATUS AND METHOD FOR CONTROLLING PRESSURE IN A BOREHOLE - There is described a technique for drilling and controlling the fluid pressure of a borehole ( | 10-01-2015 |
20150252920 | FLEXIBLE PIPE CARCASS FOR CONTROLLING FLOW INDUCED VIBRATION IN A RISER - The invention relates to a flexible pipe carcass comprising a flexible tubular wall structure comprising a helically wound wall strip; wherein interlocking sections of successive windings of said wall strip form the wall structure. The interlocking sections of adjacent wall strips define a length and are movable with respect to each other between a first position and a second, extended position for changing said length, the interlocking sections being formed such that in the extended position a carcass gap is provided between adjacent interlocking sections for accommodating relative movement there between upon flexure of the wall structure. An insert profile is located in the carcass gap of the tubular wall structure on an inside of the wall structure to at least partly cover the carcass gap. | 09-10-2015 |
20150232766 | PROCESSING FLUID FROM A WELL - Methods and apparatus for processing fluid from a well are described. A first wall portion may define a first region and a second wall portion may define a second region, fluid from said well being let through those regions. Heating of said first wall portion may be performed to release wax from said first wall portion into said fluid at said first flow region. During said heating, cooling of said fluid at said second flow region may be performed to cause wax from said fluid to deposit on said second wall portion. | 08-20-2015 |
20150204180 | SUBSEA PROCESSING - There is described subsea apparatus and a method for processing fluid from a well. In an embodiment, a pipeline may be arranged to carry the multiphase fluid containing liquid and gas from the well. An outlet extending through a wall of the pipeline may let gas out of the pipeline from said region and through the outlet to separate said gas and liquid. A compressor may be connected to the outlet to compress the separated gas. Separated liquid may be conveyed along a sloping portion of the pipe to a low point in the seabed terrain, and may be conveyed to a pump for boosting the flow of liquid. The pump may be located in an excavated hole or glory hole below the seabed. | 07-23-2015 |
20150160368 | ANISOTROPY PARAMETER ESTIMATION - A method and apparatus for estimating a rock physics model anisotropic parameter for a geological subsurface. A volume fraction of dry clay minerals present in the geological subsurface is determined. A total porosity of the geological subsurface is also determined. A value for the anisotropic parameter is determined using the volume fraction of dry clay minerals, the total porosity and empirically derived constants. The resultant anisotropy parameters can be used in rock physics models where, for example, estimates of the anisotropy parameters cannot be obtained from other sources. | 06-11-2015 |
20150100241 | PROCESSING DATA REPRESENTING A PHYSICAL SYSTEM - A method is provided of processing data representing a physical system, the method comprising: providing (P | 04-09-2015 |
20150068814 | DRILL PIPE PROTECTOR ASSEMBLY - A drill pipe protector assembly comprising at least one protector sleeve ( | 03-12-2015 |
20150020580 | CHARACTERIZING CONTENTS OF CONDUITS, IN PARTICULAR MULTIPHASE FLOW CONDUITS - A method and apparatus for determining contents of a conduit containing at least one fluid is described. The conduit may be at least partially defined by at least one wall portion. The wall portion may be cooled. After cooling said, the temperature at least one temperature sensor located adjacent to the wall portion may be measured. A characteristic of said contents is determined based on said measured temperature at the or each temperature sensor. | 01-22-2015 |
20150010357 | METHOD FOR STORING CARBON DIOXIDE COMPOSITIONS IN SUBTERRANEAN GEOLOGICAL FORMATIONS AND AN ARRANGEMENT FOR USE IN SUCH METHODS - A method and arrangement are proposed for injecting CO | 01-08-2015 |
20140352532 | CONTINUOUSLY STIRRED TANK REACTOR ABSORBER AND FLASH TANK STRIPPER SYSTEM - The invention relates to a process for separation or purification of gaseous streams by removal of acid gases using a liquid amine solution. The process involves the steps of—contacting the gaseous stream with liquid lean amine solution in at least one continuous flow stirred-tank reactor ( | 12-04-2014 |
20140346033 | REGENERATION OF KINETIC HYDRATE INHIBITOR - The present invention relates to a method and system for regeneration of kinetic hydrate inhibitor when it is used without a thermodynamic inhibitor. In that the use of a distillation column or tower is not needed, the present invention enables a more compact system, which also improves the possibility for heat integration of the regeneration process leading to very low energy consumption. Additional improvements over the prior art include reduced cost of buying new chemicals, reduced environmental impact because the chemicals are not discharged with the produced water and the possibility for the use of higher concentrations of kinetic hydrate inhibitor with still reduced cost and environmental impact. | 11-27-2014 |
20140318804 | RISER RECOIL DAMPING - An apparatus for use with a subsea well and comprising an upper riser part, a lower riser part, and a weak link coupling the upper and lower riser parts together; and a mechanism coupled between the upper and lower riser parts for damping recoil of the upper riser part following a breaking of the weak link, damping resulting from a plastic deformation of a component or components of the mechanism occurring as the upper and lower riser parts separate. | 10-30-2014 |
20140318737 | MULTI-PHASE DISTRIBUTION SYSTEM, SUB SEA HEAT EXCHANGER AND A METHOD OF TEMPERATURE CONTROL FOR HYDROCARBONS - The invention relates to a multi-phase distribution system, a sub sea heat exchanger provided with such a multi-phase distribution system, the use of such a multi-phase distribution system and a method of temperature control for hydrocarbons. The invention provides an improved control over multi-phase mixtures comprising hydrocarbons and improvements in the controlling of heat exchanging processes. | 10-30-2014 |
20140311749 | RISER WEAK LINK - A riser weak link in a riser connects a floating installation or vessel to a hydrocarbon well on the seabed. The weak link includes a first riser part in the form of an upper housing for connecting to a riser upper section; a second riser part in the form of a lower housing for connecting to a riser lower section, wherein one riser part is arranged to extend into the other riser part; and connection devices for releasably connecting the upper and lower housings. The weak link includes a first connection device arranged to fail if a tensile force on the first and second riser parts exceeds a first threshold force, and that the weak link includes a second connection device arranged to fail if a compressive force on the first and second riser parts exceeds a second threshold force. | 10-23-2014 |
20140305639 | METHOD AND APPARATUS FOR GENERATING STEAM FOR THE RECOVERY OF HYDROCARBON - The present invention provides a method of generating steam for the recovery of hydrocarbon from a hydro-carbon producing system comprising: (i) generating supercritical steam from water; (ii) converting said supercritical steam to a subcritical steam; and (iii) injecting said subcritical steam into said system. | 10-16-2014 |
20140246166 | SUBSEA HEAT EXCHANGER AND METHOD FOR TEMPERATURE CONTROL - The invention concerns a subsea heat exchanger for cooling or heating a hydrocarbon-containing fluid, said heat exchanger comprising: a convection section enclosed by a shell or enclosure comprising: one or more heat exchanging fluid inlet(s) and outlet(s); one or more hydrocarbon-containing fluid inlet(s) and outlet(s); and one or more fluid carrying convection tube(s) adapted for heat transfer between the hydrocarbon-containing fluid on the inside of the tube(s) and a surrounding heat exchanging fluid on the opposite side of the tube(s), wherein the heat exchanger is provided with one or more flow regulating device(s) for controlling the hydrocarbon-containing fluid outlet temperature, wherein the heat exchanging fluid circulates in a closed circuit for heat transfer both with said hydrocarbon-containing fluid and with surrounding sea water on the outside of the enclosure. The invention also concerns a method for subsea cooling or heating of a hydrocarbon containing fluid. | 09-04-2014 |
20140235900 | METHOD AND APPARATUS FOR THE REMOVAL OF POLYVALENT CATIONS FROM MONO ETHYLENE GLYCOL - The invention relates to a method and an apparatus for the removal of polyvalent cations, in particular divalent cations, from mono ethylene glycol. Mono Ethylene Glycol (MEG) is used to prevent hydrate formation in pipelines transporting gas, condensate and water. It may also contribute to pipeline corrosion control. The invention describes a method for the removal of polyvalent cations from mono ethylene glycol, comprising providing a feed of aqueous mono ethylene glycol comprising dissolved gas and salts of divalent cations (rich MEG), heating the aqueous mono ethylene glycol to a heated mixture, causing precipitation of at least part of the salts and release of at least part of the dissolved gas, in particular carbon dioxide, separation of released gas from the mono ethylene glycol, separation of at least part of the precipitated salts from the mono ethylene glycol, distillation of at least part of the water from the heated mixture, to yield hot dewatered mono ethylene glycol (lean MEG), wherein a first part of the hot dewatered mono ethylene glycol is lead back to the aqueous mono ethylene glycol feed to provide at least part of the heat for heating the aqueous mono ethylene glycol. | 08-21-2014 |
20140216733 | METHOD AND AN ARRANGEMENT FOR CONTROLLING FLUID FLOW INTO A PRODUCTION PIPE - A method of controlling fluid flow into a heavy oil production pipe includes reducing inflow into the production pipe locally from hot spots using inflow control devices including a movable body provided within a housing, the movable body being arranged to adjust the flow of fluid through the inflow control devices autonomously by exploiting the Bernoulli principle; increasing inflow into the production pipe remote from the hot spots using the inflow control devices to increase inflow locally; and increasing draw down in the production pipe by using an injector to inject a gaseous medium at or downstream of the inflow control devices. | 08-07-2014 |
20140216152 | CHARACTERIZING MULTIPHASE FLUID FLOW - A method and apparatus for determining multiphase flow characteristics inside production equipment containing at least two fluids. A pulse of heat from a heat source adjacent to the production equipment is provided, and a thermal response to the pulse is measured at each of a plurality of temperature sensors located adjacent to the production equipment. The thermal response measurement includes a time constant obtained from a measured decline in the temperature after the pulse of heat has been provided. The measured thermal responses are used to determine parameters of a fluid contained in the production equipment in proximity to each of the temperature sensors. The determined fluid parameters are in turn used to determine multiphase flow characteristics. | 08-07-2014 |
20140209822 | AUTONOMOUS VALVE WITH TEMPERATURE RESPONSIVE DEVICE - A self-adjustable valve or flow control device for controlling the flow of a fluid from one space or area to another by exploiting the Bernoulli principle, to control the flow of fluid, such as oil and/or gas including any water, from an oil or gas reservoir and into a production pipe of a well in the oil and/or gas reservoir, from an inlet port on an inlet side to an outlet port on an outlet side of the device. The valve includes a movable valve body arranged to be acted on by a temperature responsive device. The valve body is arranged to be actuated towards its closed position by the temperature responsive device in response to a predetermined increase in temperature in the fluid surrounding and/or entering the valve. The temperature responsive device includes an expandable device including a sealed structure at least partially filled with an expandable material | 07-31-2014 |
20140202704 | IMPROVEMENTS RELATING TO SUBSEA COMPRESSION - Subsea apparatus ( | 07-24-2014 |
20140157658 | METHOD AND SYSTEM FOR LOWERING THE WATER DEW POINT OF A HYDROCARBON FLUID STREAM SUBSEA - The present invention concerns a method for lowering the water dew point subsea in a produced multiphase hydrocarbon fluid stream containing water, the method comprising the steps of: separating ( | 06-12-2014 |
20140121979 | DETERMINING THE LOCATION OF A MATERIAL LOCATED BEHIND AN OBSTRUCTION - A method and apparatus for determining the location of a material located behind an obstruction. A plurality of acoustic resonators ( | 05-01-2014 |
20140064717 | CABLE WITH SOFT CORE FOR DIRECT ELECTRICAL HEATING OF SUBSEA PIPELINE - A cable for direct electrical heating of a subsea pipeline includes an axially soft inner core; and electrically conducting wires surrounding said core. A system includes such a cable, use of such a cable, and a method for direct electrical heating of a subsea oil/gas pipeline. | 03-06-2014 |
20140056648 | SUBSEA CABLE REPAIR - There is provided subsea repair apparatus for performing repair of a subsea cable located beneath the sea, said apparatus comprising: an environment capsule capable of providing a substantially water-free environment within the capsule; and repair equipment located within the environment capsule arranged to repair said subsea cable without the need for a person to be located within the environment capsule. | 02-27-2014 |
20140047979 | METHOD AND ABSORBER FOR REMOVAL OF ACID GAS FROM NATURAL GAS - The invention relates to a continuous process for removal of acid gas, such as carbon dioxide (CO2) from a fluid stream, such as natural gas comprising mainly hydrocarbons, by means of a absorbent medium in a rotating absorption zone. Subsequently, the acid gas is desorbed in a rotating desorption zone from the absorbent medium to allow the absorbent medium to be recirculated and the acid gas is removed for storage or drying and processing. This process can be carried out continuously, as the absorption medium is re-used. | 02-20-2014 |
20140034391 | METHOD AND APPARATUS FOR DRILLING AND LINING A WELLBORE - Apparatus for drilling and lining a wellbore is described herein. A method of drilling and lining a wellbore is also described herein. A liner hanger is provided, secured in use on a liner. The liner hanger is operable selectively to be set and unset. The liner hanger is adapted to support the liner within an existing casing when set and to release the liner from the casing when unset. A liner hanger setting tool is provided, secured in use on a drill string. The liner hanger setting tool is actuatable selectively to set and unset the liner hanger. The liner hanger setting tool is operable selectively to be activated and deactivated. The liner hanger setting tool is adapted to attach to the liner and/or liner hanger when activated, to support the liner, and to release from the liner and/or liner hanger when deactivated. The method comprises the following steps: (a) setting the liner hanger by actuating the liner hanger setting tool; (b) deactivating the liner hanger setting tool; (c) extending the borehole using the drill string; (d) returning the drill string to its position at the setting step or the deactivating step; (e) activating the liner hanger setting tool; (f) unsetting the liner hanger by actuating the liner hanger setting tool; and (g) lowering the liner down the extended borehole on the drill string. | 02-06-2014 |
20140027126 | AUTONOMOUS VALVE - The invention relates to a method and apparatus for of controlling the flow of a fluid. The fluid comprises a liquid phase and a dissolved gas phase. The fluid passes through a valve, the valve comprising a fluid inlet and a movable body located in a flow path through the valve, the movable body being arranged to move freely relative to the opening of the inlet to vary the flow-through area through which the fluid flows by means of the Bernoulli effect. The dimensions of the valve are such that flow of the fluid past the movable body causes a drop in pressure to below the bubble point of the gas phase in the liquid phase, thereby increasing flow of the fluid through the valve. | 01-30-2014 |
20140025357 | METHOD OF PREDICTING THE RESPONSE OF AN INDUCTION LOGGING TOOL - There is provided a method of predicting the response of an induction logging tool along an arbitrary trajectory in a three-dimensional earth model, wherein the method comprises a confinement of the electromagnetic field computations to a limited domain of the geology surrounding the induction logging tool. The magnetic field at a receiver coil is considered as a superposition of a primary background constituent and a secondary constituent. A single spherical scatterer approximation is used for the second constituent. | 01-23-2014 |
20130338986 | QUALITY CONTROL OF SUB-SURFACE AND WELLBORE POSITION DATA - There is provided a method of assessing the quality of subsurface position data and wellbore position data, comprising: providing a subsurface position model of a region of the earth including the subsurface position data, wherein each point in the subsurface position model has a quantified positional uncertainty represented through a probability distribution; providing a wellbore position model including the wellbore position data obtained from well-picks from wells in the region, each well-pick corresponding with a geological feature determined by a measurement taken in a well, wherein each point in the wellbore position model has a quantified positional uncertainty represented through a probability distribution; identifying common points, each of which comprises a point in the subsurface position model which corresponds to a well-pick of the wellbore position data; deriving for each common point a local test value representing positional uncertainty: selecting some but not all of the common points and deriving a test value from the local test values of the selected common points; providing a positional error test limit for the selected common points; and comparing the test value with the test limit to provide an assessment of data quality. | 12-19-2013 |
20130328692 | ELECTRO-MAGNETIC ANTENNA FOR WIRELESS COMMUNICATION AND INTER-WELL ELECTRO-MAGNETIC CHARACTERIZATION IN HYDROCARBON PRODUCTION WELLS - Methods, a system and antennas are provided for transmitting or receiving signals from a hydrocarbon production well. The well comprises a well bore formed in a formation, a production liner/tubing extending axially along the well bore, and an inductive coupling disposed around the liner/tubing. The liner tubing is electrically coupled to the formation at two axially separated locations and is electrically isolated from the formation between the locations. For transmitting, an alternating current signal to the inductive coupling to induce a current in the liner/tubing, the liner tubing forming a dipole antenna that generates an electromagnetic radiation signal propagating through the formation. For receiving, the dipole antenna is exposed to an electromagnetic radiation signal propagated through the formation which induces an alternating current signal in the tubing and the current signal is detected at the inductive coupling. | 12-12-2013 |
20130321165 | SIGNAL AND POWER TRANSMISSION IN HYDROCARBON WELLS - One aspect relates to a method of installing a transmission system in a hydrocarbon production well. The transmission system is operable for transmitting power and/or control signals down the well or for transmitting data signals back up the well. The well comprises a main well bore, a production tubing inside the main well bore and a branch off the production tubing. The branch comprises a side track tubing. The method includes: providing a sensor and/or load assembly in the branch; installing a first inductive coupler of an induced current transmission arrangement around the production tubing in the main well bore, and connecting the sensor/load assembly to the first inductive coupler via a communication link. Another aspect relates to a hydrocarbon production well installation. | 12-05-2013 |
20130292183 | CENTRALIZER - A centralizer includes a centralizer body to be situated at the outer surface of a pipe string in the form of casing, liner, or the like used while drilling, the centralizer body being formed with a plurality of outer centralizer blades arranged in an inclined manner to the longitudinal axis thereof, wherein the centralizer body has an separate split inner tube secured to the pipe string by means of a press fit, and low friction inner surface of the centralizer body and separate center tube facing each other are made from low friction material. | 11-07-2013 |
20130223935 | METHODS AND ARRANGEMENTS FOR CARBON DIOXIDE STORAGE IN SUBTERRANEAN GEOLOGICAL FORMATIONS - The invention concerns an arrangement for injecting CO | 08-29-2013 |
20130170910 | METHODS FOR STORING CARBON DIOXIDE COMPOSITIONS IN SUBTERRANEAN GEOLOGICAL FORMATIONS AND ARRANGEMENTS FOR USE IN SUCH METHODS - A method of introducing a CO | 07-04-2013 |
20130153402 | CO2 DESORPTION WITHOUT STRIPPER | 06-20-2013 |
20130133895 | MECHANICAL BENDING WEAK LINK - A method and a safety device are disclosed for protection of well barrier(s) against excessive bending moments from a riser. The safety device is arranged to detect critical bending loads in or in between the well barrier(s) and/or riser, and may include: a device for detecting changes in a curvature between a load carrying riser pipe and an unloaded stiff body attached to or in the vicinity of the riser pipe, said device for detecting changes in the curvature being arranged to measure a relative distance between the load carrying riser pipe and the unloaded stiff body, and a device for triggering disconnection of a releasable riser connector when the distance between the load carrying riser pipe and the unloaded stiff body reaches a predefined critical distance. | 05-30-2013 |
20130101361 | SYSTEM AND METHOD FOR PASSING MATTER IN A FLOW PASSAGE - A system is provided for passing matter in a flow passage of an oil and/or gas drilling or production installation, in particular for passing trash or drill cuttings in a drilling fluid return line. The system includes at least two valves arranged in series in said passage; and a control device configured to selectively or sequentially actuate said at least two valves, such that the material is allowed to pass said at least two valves in the passage. A method is also provided for passing trash or drill cuttings in a drilling fluid return line. | 04-25-2013 |
20130093179 | ELETRONIC COMBINED LOAD WEAK LINK - A safety device and method for protection of the integrity of well barrier(s) or other interfacing structure(s) at an end of a riser string or a hose includes a releasable connection in the riser string or hose, the releasable connection arranged to release or disconnect during given predefined conditions in order to protect the well barrier(s) or other interfacing structure(s). The safety device safety device includes at least one sensor to monitor at least one of tension loads, bending loads, internal pressure loads and temperature. The sensor provides measured data relating to at least one of tension loads, bending loads, internal pressure loads and temperature. An electronic processing unit receives and interprets the measured data from the sensor. An electronic, hydraulic or mechanical actuator or switch is arranged to receive a signal from the electronic processing unit and initiate a release or disconnect of the releasable connection. | 04-18-2013 |
20130087733 | GATE VALVE, METHOD FOR RETURNED DRILLING MUD PRESSURE CONTROL AND/OR WELL KILLING, AND USES OF A GATE VALVE - A gate valve is provided for returned drilling mud pressure control and/or well killing. The gate valve includes a flow passage; and a gate member movable for intersecting the flow passage. The gate member includes a gate port which extends from one face to an opposite face of the gate member and is alignable with the flow passage for allowing material in the flow passage to pass through the gate member, and a groove or recess is provided in an inner wall of the gate port, the groove or recess extending from the one face to the opposite face of the gate member. A method is provided for returned drilling mud pressure control and/or well killing, and uses of a gate valve. | 04-11-2013 |
20130081659 | CLEANING OF OIL-IN-WATER MONITORS - An oil-in-water monitor cleaning apparatus includes a nozzle configured to direct pressurized cleaning fluid at an optical window. | 04-04-2013 |
20130059354 | ALKANOL - The present invention provides a process for the production of an alkanol (e.g. butanol) comprising converting a carbon source such as a biomass into a carboxylic acid or a derivative thereof using a microorganism, and electrochemically reducing said acid to said alkanol, as well as an apparatus for carrying out said process. | 03-07-2013 |
20130054212 | ESTIMATING INTERVAL VELOCITIES - A method of estimating a velocity of a geological layer includes providing a first, initial model including an interval velocity associated with a subsurface location and an uncertainty associated with the interval velocity; providing data including an actual or approximated root-mean-square (RMS) velocity associated with a subsurface location and an uncertainty associated with the RMS velocity; and estimating a second model including an interval velocity associated with a subsurface location and an uncertainty associated with the interval velocity, based on the interval velocity and the uncertainty of the first model, and the RMS velocity and the uncertainty of the data. | 02-28-2013 |
20130042645 | METHOD FOR TURNDOWN OF A LIQUEFIED NATURAL GAS (LNG) PLANT - A method for turndown of a liquefied natural gas (LNG) plant, the plant including a liquefaction unit arranged in a flow path of the plant, includes removing LNG from a first location in the flow path downstream of the liquefaction unit; vaporizing the removed LNG, or heating the removed LNG so that the removed LNG is transformed to gas phase; and re-admitting the vaporized or transformed LNG to the flow path at a second location upstream of the liquefaction unit. A corresponding LNG plant is also provided. | 02-21-2013 |
20130008513 | FLOW CONTROL DEVICE AND FLOW CONTROL METHOD - Disclosed herein is an improved method for reversed flow through a self-adjustable (autonomous) valve or flow control device ( | 01-10-2013 |
20130000883 | HYDROCARBON RECOVERY - A thermal hydrocarbon recovery apparatus comprises: a plurality of steam injector tubes each provided with a plurality of injector autonomous inflow control devices, AICDs, spaced apart from each other along the length of each steam injector tube; a plurality of production tubes each provided with a plurality of production autonomous inflow control devices, AICDs, spaced apart from each other along the length of each production tube; wherein said injector AICDs are arranged to inject steam into a geological formation so as to reduce the viscosity of hydrocarbons in the formation; and wherein said production AICDs are arranged to permit the flow of heated hydrocarbons into said production tubes for movement to the surface. | 01-03-2013 |
20120190907 | METHOD FOR ISOLATION AND QUANTIFICATION OF NAPHTHENATE FORMING ACIDS ("ARN ACIDS") - A method for isolation and quantification of naphthenate forming acids (ARN-acids) in crude oils is disclosed. The method involves selective absorbtion/adsorption of ARN acids by a solid medium. Isolation of the solid medium and transferring the ARN acids to an organic solvent which can by analysed for its ARN acid content. | 07-26-2012 |
20120175241 | ROTATING DESORBER WHEEL - A system for desorption of CO | 07-12-2012 |
20120174784 | METHOD AND APPARATUS FOR CO2 CAPTURE - Disclosed is a method for capturing C02 from a gas stream ( | 07-12-2012 |
20120174782 | COMPACT ABSORPTION-DESORPTION PROCESS AND APPARATUS USING CONCENTRATED SOLUTION - A process for absorption and desorption of CO2 from an flue gas comprising feeding the flue gas into a mainly horizontal channel ( | 07-12-2012 |
20120145276 | PIPELINE WITH AN INTERNAL CORROSION RESISTANT METAL COATING - A pipeline comprising an outer steel pipe and an internal corrosion resistant covering adhesively joined to the inside of the steel pipe. The pipeline can be taken up onto a drum and later unwound and laid out without any observed deformation of the metal covering. A method for the manufacturing of the pipeline comprises the steps of applying an adhesive onto the outside of the metal covering and optionally also onto the inside of the steel pipe, inserting the metal covering into the pipe and expanding the covering until being in a good contact with the inside of the steel pipe, and curing the adhesive to make the metal covering adhere tightly to the inside of the steel pipe. | 06-14-2012 |
20120117124 | INTERACTIVE RENDERING OF PHYSICAL ENTITIES - A method for generating a model of a physical entity, in particular the earth, using one or more hierarchically organized multi-resolutional data trees T, each data tree comprising a plurality of nodes N | 05-10-2012 |
20120018293 | PROCESS FOR HYDRATE INHIBITOR REGENERATION - The invention provides a process for the production of a lean liquid hydrate inhibitor composition from a rich liquid hydrate inhibitor composition in which the liquid hydrate inhibitor has a boiling point above that of water, which process comprises: (a) feeding said rich liquid hydrate inhibitor composition to a first distillation vessel; (b) withdrawing a water and inhibitor containing vapour from said first distillation vessel and feeding it to a second distillation vessel; (c) withdrawing water vapour from said second distillation vessel; (d) withdrawing a lean hydrate inhibitor composition from said second distillation vessel in liquid form; (e) withdrawing a lean hydrate inhibitor composition from said first distillation vessel in liquid form; (f) withdrawing liquid from said first distillation vessel and removing solids therefrom; wherein the withdrawal of steps (e) and (f) may be of a single liquid stream and wherein at least a portion of the lean hydrate inhibitor composition withdrawn from said first distillation vessel is not recycled into said first distillation vessel. | 01-26-2012 |
20110263169 | DISCONNECTABLE PRODUCTION DOCK (DPD) FOR TURRET FREE DISCONNECTABLE WEATHER VANING FPSO - System for mooring a large vessel for production of hydrocarbons, such vessel for example being a FPSO vessel, the mooring system including at least two floating bodies of the hang-off type, moored by means of differentiated compliance spread anchoring system to the sea bed, allowing partly weathervaning of the large vessel; a riser system extending from the sea bed to each the floating bodies, and means for transfer of fluids from the two floating bodies to the large vessel, the floating bodies and the large vessel being provided with locking means, locking floating bodies to the large vessel at the bow and the stern of the vessel in a mechanically rigid manner, thus providing a integrated, rigidly fixed unit comprising the large vessel and the floating bodies. | 10-27-2011 |
20110259901 | SUBSEA GRAVITY SEPARATOR - A large diameter subsea gravity separator for ultra deep water conditions of 2000 to more than 4000 m includes a vessel having a shell which defines a cylindrical tubular portion and closure portions at axially both ends of the tubular portion. The shell is a sandwich shell which is dimensioned to provide for a predetermined collapse resistance of at least MPa and includes an inner steel layer, an outer steel layer and a concrete layer completely filling the space between the inner steel layer and the outer steel layer. | 10-27-2011 |
20110253379 | METHOD FOR MODIFYING AN EXISTING SUBSEA ARRANGED OIL PRODUCTION WELL, AND A THUS MODIFIED OIL PRODUCTION WELL - Method to modify an existing subsea arranged oil production well having installed a hydraulically operated downhole valve, characterized in using coiled tubing technology to: arrange an electrically operated downhole pump in the production tubing, lock the hydraulically operated downhole valve in an open position by placing a sleeve body in the open positioned valve, arrange an electrically operated downhole valve above the downhole pump. A modified oil production well. | 10-20-2011 |
20110252893 | DEVICE FOR MEASURING RATES IN INDIVIDUAL PHASES OF A MULTIPHASE FLOW - A device for measuring rates in individual phases of a multiphase flow, such as in flow of hydrocarbon fluid through a pipe line, comprising a venturi having, seen in the flow direction thereof, a first inlet portion with deceasing cross-section, a second intermediate portion with mainly uniform cross-section, and a third outlet portion with increasing cross-section, and being situated within the pipe line. According to the present invention, the venturi is provided with a number of sensors, and the sensors are arranged in mutual distance at different cross-section areas along at least the first of the three portion of the venturi as thereby being able to determine a pressure profile along the venturi as a base for estimating rates for actual rates of the flow. | 10-20-2011 |
20110247697 | METHOD OF PROCESSING FLUID FROM A WELL - There is described a method of processing fluid from a well. In an embodiment, a fluid processing system is operable to process fluids from a well in dependence on a plurality of controllable system parameters. The parameters are adjusted between respective first and second parameter values, and the first values define a first operational configuration and the second values defining a second, different operational configuration. The adjustment is carried out such that the system is balanced whilst adjusting the parameters. This may be done by adjusting the value of each parameter simultaneously along linear curves from a first initial value to a second end value. In the second configuration, activation or deactivation of a compressor ( | 10-13-2011 |
20110235057 | METHOD FOR MEASUREMENT OF THE THICKNESS OF ANY DEPOSIT OF MATERIAL ON INNER WALL OF A PIPELINE - A method is provided for measurement of the thickness of any deposit of material on the inner wall of a pipeline at least partly filled with a medium including hydrocarbons, the medium being for instance oil or natural gas, wherein the method includes: projecting infrared light onto the inner wall of the pipeline along a line corresponding to the intersection between the inner wall of the pipeline and a cross-sectional plane of the pipeline; registering an image of the infrared light projected on the inner wall of the pipeline; and determining the thickness of any deposit of material on the inner wall of the pipeline based on the registered image. | 09-29-2011 |
20110214884 | LINING OF WELL BORES WITH EXPANDABLE AND CONVENTIONAL LINERS - Reducing the diameter of a well bore has many advantages. To achieve this a subsurface well bore is provided comprising one or more expandable sleeve components, preferably expandable liners ( | 09-08-2011 |
20110198132 | DRILL PIPE PROTECTOR ASSEMBLY - A drill pipe protector assembly comprising at least one protector sleeve ( | 08-18-2011 |
20110172977 | METHOD OF MODELLING A SUBTERRANEAN REGION OF THE EARTH BY PERFORMING A BAYESIAN INVERSION - A method of modelling a subterranean region of the Earth at a first location comprises the steps of: providing geological data; selecting a plurality of facies; providing a distribution of rock physics probability with spatial dependencies; approximating the rock physics probability at the first location with at least one distribution per facies utilizing the spatial dependencies in the rock physics probability distribution; and performing a Bayesian inversion at the first location using the approximation of the rock physics probability distribution. The method may also employ a window comprising the first location and at least one further location. | 07-14-2011 |