Class / Patent application number | Description | Number of patent applications / Date published |
073152050 | Density, porosity, or permeability | 40 |
20090126475 | Determining Permeability Using Formation Testing Data - A method, system and computer program product for determining permeability of an earth formation of a reservoir are disclosed. A method may include: providing formation testing data of the earth formation; defining layering of the earth formation; determining a geological model for each layer; modeling pressure transient in the earth formation by representing pressure transient within a layer using an analytical solution and representing pressure transient between two layers using a numerical solution, the analytical solution selected based on at least one of the respective geological model and data regarding a drilled well of the reservoir, and a parameter of the analytical solution and a parameter of the numerical solution being determined based on the formation testing data; and determining the permeability of the earth formation based on the pressure transient model. | 05-21-2009 |
20090235729 | METHOD OF ESTIMATING THE FRACTURE DENSITY IN A ROCK MEDIUM - The invention is a method of constructing a three-dimensional fracture density log of a porous formation traversed by fractures and a borehole. A number N of intersections between the fractures and the borehole is measured over a section of the borehole of length L located at a depth d, from observations of the wall of this section. A conditional probability law of the three-dimensional fracture density is then estimated, knowing the number N of intersections. The value of the three-dimensional fracture density at depth d is determined by calculating the mean of this conditional probability law. Finally, the three-dimensional fracture density log is constructed by repeating the previous stages for different depths. A three-dimensional fracture density uncertainty log can also be associated by calculating quantiles of the conditional probability law. | 09-24-2009 |
20090282907 | METHODS AND APPARATUS TO CONTROL A FORMATION TESTING OPERATION BASED ON A MUDCAKE LEAKAGE - Methods and apparatus to control a formation testing operation based on a mudcake leakage are disclosed. A disclosed example method for use with a downhole tool disposed in a wellbore comprises measuring a property of a mudcake layer at a first location in a wellbore, determining a value representative of an estimated leakage through the mudcake layer based on the property, and determining, based on the value, whether to continue a formation testing operation. | 11-19-2009 |
20100300194 | PERMEABILITY FLOW BALANCING WITHIN INTEGRAL SCREEN JOINTS AND METHOD - A borehole system having a permeability controlled flow profile including a tubular string; one or more permeability control devices disposed in the string; and the plurality of permeability control devices being selected to produce particular pressure drops for fluid entering or exiting various discrete locations along the string and method. | 12-02-2010 |
20120011927 | METHOD OF DETERMINING SUBTERRANEAN FORMATION PARAMETERS - A method for assigning a wettability or related parameter to a subvolume of formation located between two or more boreholes is described with the method including the steps of obtaining measurements of the resistivity at the subvolume, obtaining further parameters determining a relation between resistivity and saturation from logging measurements along the two or more boreholes, obtaining geological measurement defining geological or rock-type boundaries within the formation between the two or more boreholes, selecting the subvolume such that it is not intersected by the geological or rock-type boundaries; transforming the resistivity measurements into the saturation at the subvolume; and—using the saturation and/or the further parameters to determine the wettability or related parameter for the subvolume. | 01-19-2012 |
20120024050 | Method And Apparatus For In-Situ Wellbore Measurements - An apparatus and method to monitor parameters outside the wellbore casing of a well includes a Wireless Sensor Unit located outside a section of a non-magnetic casing of the well. The Wireless Sensor Unit includes a sensor device to measure parameters of the surroundings. The apparatus further includes an internal Sensor Energizer Unit inside the wellbore casing used for power and communication with the Wireless Sensor Unit. The Sensor Energizer Unit and the Wireless Sensor Unit are arranged to be at the same elevation, and they communicate data using electromagnetic modulation techniques. | 02-02-2012 |
20120192639 | GAS SORPTION ANALYSIS OF UNCONVENTIONAL ROCK SAMPLES - Systems and methods for gas sorption analysis, or analogous practices, of samples from unconventional reservoirs are described. The described analysis of samples is used to determine various properties of unconventional reservoirs, which are used in evaluating their worth and producibility. | 08-02-2012 |
20120227482 | GROUNDWATER PROFILE MONITORING SYSTEM - A groundwater profile monitoring system includes a groundwater sensor configured to sense a state of groundwater; a driving unit including a sensor cable to which the groundwater sensor is connected at one end thereof and configured to vertically move the groundwater sensor; a data logger configured to receive and store sensing information sensed by the groundwater sensor and transmit the sensing information to a designated server; and a power supply unit configured to produce electric power using solar energy and supply the produced electric power to the driving unit and the data logger. Since a profile material of vertical groundwater according to a depth of a tube well can be continuously collected by using one sensor, an accurate groundwater related material can be collected more efficiently. | 09-13-2012 |
20120312090 | METHOD FOR EVALUATION OF HYDROCARBON CONTENT OF SHALE - The invention relates to the evaluation of hydrocarbon gas or liquid deposits, or condensate, in a shale formation. From relatively few log inputs, together with assumed or estimated or known values for density or porosity of kerogen, a single mathematical process involving the solution of a number of simultaneous equations, provides a value for both kerogen volume and total porosity. Additional checks and balances may be used to provide corrections to the result, for example based on pyrite volume or water saturation. | 12-13-2012 |
20130118248 | METHOD AND APPARATUS FOR ESTIMATING A DOWNHOLE FLUID PROPERTY USING A CHARGED PARTICLE DENSITOMETER - An apparatus, system and method are disclosed for estimating a property of a fluid downhole, the apparatus including but not limited to a carrier that is conveyable in a borehole; a test cell carried by the carrier for capturing a fluid downhole; a fluid channel immersed in the fluid downhole, the fluid channel having a first wall and a second wall, wherein the first wall faces the second wall; at least on charged particle source placed at location along the first wall of the fluid channel; and at least one charged particle detector placed at a location along the second wall of the fluid channel, wherein the at least one radioactive detector is in positioned to be in particle communication with the at least one of the charged particle source. | 05-16-2013 |
20130192358 | METHOD AND APPARATUS FOR TESTING LOST CIRCULATION MATERIALS FOR SUBTERRANEAN FORMATIONS - An apparatus for testing lost circulation materials (“LCMs”) for use in a formation is disclosed. The apparatus may comprise a LCM cell that contains at least one formation simulation component. A pressurized tank may be in fluid communication with the LCM cell, and may force a sample LCM slurry into the LCM cell. An LCM receiver may also be in fluid communication with the LCM cell, and may receive the LCM slurry that flows through the LCM cell. | 08-01-2013 |
20130205886 | Method For Determining A Permeability Or Mobility Of A Radial Flow Response Of A Reservoir - A system and method determine formation permeability and/or at least one property indicative of formation permeability of a subsurface geological reservoir having radial-flow. Pressure data is obtained with an observation probe during a formation test, wherein the observation probe is located at a setting position within an open hole wellbore formed within the reservoir. The system and method measure radial-flow response of the reservoir at or adjacent to the setting position of the observation probe by analyzing the collected pressure data. The formation permeability and/or at least one property indicative of the permeability of the reservoir is determined based on the measured radial-flow response of the reservoir at or adjacent to the observation probe. | 08-15-2013 |
20130205887 | BOREHOLE LOGGING SYSTEM AND METHOD - A borehole logging method comprises processing density measurements taken by at least one probe at intervals along a borehole to determine the gravitational effects of geologic formations intersected by the borehole; and removing the determined gravitational effects from gravity measurements taken by at least one probe at intervals along the borehole to determine the gravitational efforts of geologic formations from the borehole. | 08-15-2013 |
20130239671 | PRESSURE-CORRECTED DENSITY OF A FLUID - This disclosure is drawn to methods, systems, devices and/or apparatus related to determining the density of a fluid. Specifically, the disclosed methods, systems, devices and/or apparatus relate to determining the density of a fluid in situ (e.g., in a downhole tool) under the Earth's surface using extrapolation and/or interpolation technique(s). Some example methods may include obtaining a fluid sample from a formation, measuring, in a downhole tool, a plurality of density values of the fluid sample, each density value being measured at a distinct pressure level within a pressure range, and extrapolating and/or interpolating the plurality of density values of the fluid sample to a pressure level different that the distinct pressure in which the density value is measured. Some example methods may include tuning one or more Equation-of-State model based, at least in part, on the density values. | 09-19-2013 |
20130312511 | METHOD AND APPARATUS FOR AUTOMATICALLY TESTING HIGH PRESSURE AND HIGH TEMPERATURE SEDIMENTATION OF SLURRIES - A method and apparatus for automatically testing high pressure and high temperature sedimentation of slurries is described. The method includes pumping a sample drilling fluid into a test cell. The sample drilling fluid may be subjected to a pre-determined pressure and a pre-determined temperature for a pre-determined period of time. The test cell may also be oriented at non-vertical angle. The sample drilling fluid may be pumped out of the test cell and the density of the sample drilling fluid automatically measured relative to a displaced fluid volume of the sample drilling fluid. | 11-28-2013 |
20130340517 | PERMEAMETER PROBE - A permeameter probe, configured for performing hydraulic conductivity measurements of soil, includes a standpipe having a top section, a transitional section, and a bottom section. The transitional section provides a gradual change in diameter between the larger diameter bottom section and the smaller diameter top section. The standpipe also includes a lower lip for forming a pressure fitting between the standpipe and a casing placed in a borehole. | 12-26-2013 |
20140033815 | RELAXIVITY-INSENSITIVE MEASUREMENT OF FORMATION PERMEABILITY - Systems and methods that provide relaxivity-insensitive permeability logs. At least some logging system embodiments include a logging tool assembly that measures spin-spin relaxation time distributions of formation fluid nuclei at different positions along a borehole. A processor operates on the measurements to provide a permeability log that is relatively insensitive to relaxivity coefficient changes and hence insensitive to changes in formation fluids. Thus, permeability logs will be relatively unaffected by invasion of the borehole fluids into the formation, even if surfactants in the borehole fluid cause large changes in formation wettability. For each position logged within a borehole, the processor may process the measured relaxation time distribution to determine a Swanson parameter value; adjust the Swanson parameter value to reduce dependence on relaxivity; and convert the adjusted value to a permeability measurement. Examples are included below to demonstrate the markedly increased permeability measurement accuracy. | 02-06-2014 |
20140102188 | METHOD AND APPARATUS FOR TESTING LOST CIRCULATION MATERIALS WITHIN A PERMEABILITY PLUGGING APPARATUS - According to aspects of the present disclosure, an apparatus for testing lost circulation materials (LCMs) within a permeability plugging apparatus (PPA) is described. The apparatus may include a PPA cell cap and an elongated LCM receiver. At least one tubular member may provide fluid communication between the PPA cell cap and the elongated LCM receiver. The at least one tubular member may be sized to accommodate large particulate LCM testing within the PPA. The apparatus may also include a backpressure inlet through the elongated LCM receiver. Providing back pressure within the LCM receiver may extend the temperature and pressure ranges under which the large particulate LCMs may be tested. | 04-17-2014 |
20140250998 | DETECTION OF PERMEABILITY ANISOTROPY IN THE HORIZONTAL PLANE - A method for detection of permeability anisotropy, having steps of positioning a formation testing tool, conducting a series of three flow tests with the testing tool wherein a first test is a four drain flow test, a second test is a pair of opposite drains flowing on diametrically opposite sides of the formation testing tool and a third test is a second pair of opposite drains flowing on opposite drains different than the second test; determining one of horizontal permeability and horizontal mobility, determining one of orthogonal components of horizontal permeability and horizontal mobility based on the measured flow response and determining a direction of the orthogonal components of the horizontal permeability or horizontal mobility with respect to the orientation of the formation testing tool based on a measured flow response. | 09-11-2014 |
20140318232 | RELATIVE PERMEABILITY FROM BOREHOLE RESISTIVITY MEASUREMENTS - Methods for deriving relative permeability from resistivity measurements in the laboratory and from downhole resistivity measurements are described. Further, systems and methods for determining relative permeability from borehole resistivity measurements made during a water flooding event such as drilling with water-based mud, water injection and/or water invasion are described. | 10-30-2014 |
20140366621 | Gas Sorption Analysis Of Unconventional Rock Samples - Systems and methods for gas sorption analysis, or analogous practices, of samples from unconventional reservoirs are described. The described analysis of samples is used to determine various properties of unconventional reservoirs, which are used in evaluating their worth and producibility. | 12-18-2014 |
20140373617 | DETECTION OF PERMEABILITY ANISOTROPY IN THE HORIZONTAL PLANE WITH A FORMATION TESTING TOOL - A method including positioning a formation testing tool within a wellbore formed within a subsurface reservoir, wherein the tool has a focused opening to enable fluid communication with the reservoir, and the tool has a horizontally-displaced observation probe configured to obtain pressure data; determining one of horizontal permeability and horizontal mobility of the reservoir based on measuring a flow response of the subsurface reservoir one of at and adjacent to the observation probe; and determining orthogonal components of one of the horizontal permeability and horizontal mobility based on the measured flow response. | 12-25-2014 |
20150101404 | SENSOR CHARACTERIZATION APPARATUS, METHODS, AND SYSTEMS - In some embodiments, an apparatus and a system, as well as a method and an article, may operate to receive a vibration signal having a frequency and a characteristic (e.g., voltage) proportional to the vibration amplitude of a tube in a vibrating tube density sensor. Further activity may include transmitting the density of a fluid flowing through the tube based on the frequency and an elastic modulus of the tube determined by the value of the characteristic. Additional apparatus, systems, and methods are described. | 04-16-2015 |
20150135814 | Method And Apparatus For Water-Based Mud Filtrate Contamination Monitoring In Real Time Downhole Water Sampling - A method and apparatus for performing water based mud-filtrate contamination monitoring in real time through evaluation of downhole water sampling. | 05-21-2015 |
20150331132 | METHOD AND APPARATUS FOR THE DOWNHOLE IN-SITU DETERMINATION OF THE SPEED OF SOUND IN A FORMATION FLUID - An apparatus and a method for measuring a speed of sound in a fluid in a well bore may include a frame adapted to receive the fluid there through are provided. The apparatus includes an acoustic source mounted on the frame; an acoustic detector to measure a signal propagating through the fluid, the acoustic detector disposed proximate the frame at a known distance from the acoustic source; and a test circuit adapted to synchronize the acoustic detector with a signal propagating through the frame. A method to determine physical properties of a fluid in a geological formation including a shear wave anisotropy in the geological formation and the formation composition using the fluid density and the fluid speed of sound is also provided. | 11-19-2015 |
20150354352 | METHODS AND SYSTEMS FOR EVALUATION OF ROCK PERMEABILITY, POROSITY, AND FLUID COMPOSITION - Methods and systems for substantially simultaneous evaluation of rock sample permeability and porosity, and composition of formation fluids, are provided. Such methods and systems may be used to evaluate the permeability, porosity, and composition of at least a portion of a subterranean formation in a drilling operation. An example of such a method may include passing a cleaning fluid through the rock sample so as to extract at least a portion of one or more formation fluids from the rock sample in an effluent comprising the cleaning fluid and the portion of the one or more formation fluids; and determining one or more properties of the effluent so as to determine the composition of the portion of the one or more formation fluids, and so as to determine the permeability and porosity of the rock sample. | 12-10-2015 |
20160003037 | Hydrocarbon Density Determination Method - A method for analyzing a geological formation having at least one hydrocarbon therein may include determining a total organic carbon mass over a depth range of the geological formation, and determining a mass fraction of the at least one hydrocarbon over the depth range of the geological formation based upon the total organic carbon mass. The method may further include determining a volume of the at least one hydrocarbon over the depth range of the geological formation, and determining a density of the at least one hydrocarbon over the depth range of the geological formation based upon the mass fraction and the volume of the at least one hydrocarbon. | 01-07-2016 |
20160003725 | Estimating Porosity or Permeability in a Region Of Interest - Disclosed herein are implementations of various technologies for a method for estimating porosity or permeability in a region of interest. The method may receive chemical measurements for the region of interest. The chemical measurements may include an amount of silicon, aluminum, potassium and iron in the region of interest. The method may determine an amount of biogenic silica in the region of interest using the chemical measurements. The method may determine grain density of the region of interest based on the amount of biogenic silica. The method may determine the porosity or permeability in the region of interest based on the grain density. | 01-07-2016 |
20160040533 | Pressure Volume Temperature System - A method and an apparatus for characterizing a fluid including a phase transition cell to receive the fluid, a piston to control fluid pressure, a pressure gauge to measure the fluid pressure and to provide information to control the piston, and connectors to connect the cell, piston, and gauge. The exterior volume of the phase transition cell, piston, gauge, and connectors is less than about 10 liters. A method and an apparatus to characterize a fluid including observing a fluid in an phase transition cell, measuring a pressure of the fluid, and adjusting a pressure control device in response to the measuring. | 02-11-2016 |
20160130939 | METHOD AND APPARATUS FOR TESTING LOST CIRCULATION MATERIALS FOR SUBTERRANEAN FORMATIONS - An apparatus for testing lost circulation materials (“LCMs”) for use in a formation is disclosed. The apparatus may comprise a LCM cell that contains at least one formation simulation component. A pressurized tank may be in fluid communication with the LCM cell, and may force a sample LCM slurry into the LCM cell. An LCM receiver may also be in fluid communication with the LCM cell, and may receive the LCM slurry that flows through the LCM cell. | 05-12-2016 |
20160195465 | METHOD FOR DETERMINING MODIFICATION OF POROUS MEDIUM PARAMETERS UNDER THE EFFECT OF A CONTAMINANT | 07-07-2016 |
073152060 | Including oil, gas, or water saturation | 1 |
20140069183 | METHOD OF REDUCING UNCERTAINTY IN PRESSURE PULSE-DECAY MEASUREMENT - Disclosed is a method of reducing uncertainty, which exactly finds the hydraulic conductivity and the specific storativity of a rock sample in pressure pulse-decay measurement. Axial and confining pressures are applied to the rock sample, and upstream and downstream reservoirs are connected to the rock sample. Coordinate values representing minimum values of a contour of a graph of an objective function, in which the hydraulic conductivity and the specific storativity obtained through the pressure pulse-decay measurement scheme to apply pressure pulses from the outside are expressed in horizontal and vertical axes are found from the graph. The coordinate values are set as the hydraulic conductivity and the specific storativity of the rock sample. Graphs of objective functions obtained by repeating the pressure pulse-decay measurement while changing boundary conditions are shown in overlapped, thereby reducing the uncertainty of the hydraulic conductivity and the specific storativity of the rock sample. | 03-13-2014 |
073152070 | By a core sample analysis | 8 |
20100064795 | DOWNHOLE FLUID PROPERTY CHROMATOGRAPHY - A method for analyzing properties of fluids contained in a geological formation including the steps of lowering a tool containing a chromatograph down to a location within the geological formation; setting the tool into position; extracting a sample of formation fluid from the location within the geological formation under controlled conditions and directing it into the chromatograph; and analyzing the composition of the formation fluid sample located downhole. The formation fluid sample is delivered to the chromatograph with or without admixture with a solvent. A sampling tool for use in the method forms another aspect of the invention. | 03-18-2010 |
20100126266 | FORMATION CORE SAMPLE HOLDER ASSEMBLY AND TESTING METHOD - A core sample holder assembly for performing laboratory core flooding experiments with a core sample:
| 05-27-2010 |
20110030465 | GEOCHEMICAL SURVEILLANCE OF GAS PRODUCTION FROM TIGHT GAS FIELDS - A method of estimating the recovery factor for the volume drained by at least one producing gas well that penetrates a tight gas reservoir or a coalbed methane reservoir, the method comprising: (a) calibrating changes in the isotopic composition of at least one component of the gas that is produced from the gas well with increasing recovery factor; (b) obtaining a sample of produced gas from the producing gas well and analyzing the sample to obtain the isotopic composition of the component of the produced gas; (c) using the calibration obtained in step (a) and the isotopic composition determined in step (b) to estimate the recovery factor for the volume drained by the gas well; (d) using the estimate of the recovery factor determined in step (c) and the cumulative volume of gas produced from the gas well to determine the volume drained by the gas well; and (e) optionally, periodically repeating steps (b) to (d) to determine any increase in recovery factor for the volume drained by the gas well with time and any increase in the volume drained by the gas well with time. | 02-10-2011 |
20110271751 | Simulating Downhole Flow Through a Perforation - A method of testing a core sample is provided. The method comprises determining an impedance map, attaching a sleeve to the core sample, and measuring a flow performance of the core sample. An impedance of each of a plurality of portions of the sleeve is based on the impedance map. | 11-10-2011 |
20130031969 | Simulating Downhole Flow Through a Perforation - A method of testing a core sample is provided. The method comprises determining an impedance map, attaching a sleeve to the core sample, and measuring a flow performance of the core sample. An impedance of each of a plurality of portions of the sleeve is based on the impedance map. | 02-07-2013 |
20140060172 | METHOD FOR MEASURING WEIGHT CONCENTRATION OF CLAY IN A SAMPLE OF A POROUS MEDIUM - For the purpose of determining a weight concentration of a clay material in a porous medium sample, a specific active surface area of the clay material and an initial specific active surface area of the porous sample are measured. A water solution of the clay material is pumped through the sample and a specific active surface area of the sample of the porous medium is measured after the pumping. Then, the weight concentration | 03-06-2014 |
20140260586 | METHOD TO PERFORM RAPID FORMATION FLUID ANALYSIS - A method for determining a property of a formation is described herein. The method includes positioning a wellbore tool at a location within a wellbore. A formation fluid is withdrawn from the formation using the wellbore tool. The formation fluid is passed through a flow line within the wellbore tool and a formation fluid sample is extracted from the flow line. The method further includes analyzing the formation fluid sample within the wellbore tool to determine a property of the formation fluid sample. The analysis is performed by excluding mud filtrate contamination within the flow line. | 09-18-2014 |
20160138394 | Simulating Downhole Flow Through a Perforation - A perforation test target is provided. The perforation test target includes a metal plate and a core sample adhered to the metal plate at one end. The perforation test target further including a first sleeve adhered to the core sample, where a flow impedance of each of a plurality of portions of the first sleeve is based on a predetermined impedance map. | 05-19-2016 |