Class / Patent application number | Description | Number of patent applications / Date published |
324324000 | Including borehole fluid investigation | 36 |
20090072832 | Transducer Assemblies for Subsurface Use - Transducer apparatus for subsurface use. A tubular configured for subsurface disposal is equipped with a cylindrical transducer module formed of a non-conductive material. The module is mounted to surround a section of the tubular and includes a transducer element disposed thereon such that only a surface of the element is exposed along the exterior of the module body. The transducer element is linked to a lead routed through the cylindrical body to exit near the inner bore of the body. The ends of the cylindrical body are covered with a material to form a hydraulic seal. A method for constructing the transducer apparatus. | 03-19-2009 |
20090195250 | MEASUREMENT WHILE DRILLING TOOL WITH INTERCONNECT ASSEMBLY - An embodiment of the apparatus includes a first drill collar section having an outer surface, an MWD tool for interaction with an earth formation coupled to the first drill collar section, the MWD tool including a first fluid line and a first electrical conduit, a second drill collar section, and an interconnect assembly coupling the second drill collar section to the first drill collar section, the interconnect assembly comprising a fluid line connection coupled to the first fluid line and an electrical connection coupled to the first electrical conduit. Another embodiment of the apparatus includes a probe, an interconnect assembly adapted for fluid communication and electrical communication, and a sample bottle drill collar section including at least one removable sample bottle in fluid communication with the probe. Another embodiment of the apparatus includes a flush pump mounted in the power collar section and coupled to the probe. An additional embodiment includes a fluid ID sensor disposed in a flow line between the flush pump and the probe. | 08-06-2009 |
20100148780 | SYSTEM AND METHOD FOR QUALITATIVE AND QUANTITATIVE ANALYSIS OF GASEOUS COMPONENTS OF MULTIPHASE HYDROCARBON MIXTURES - Embodiments of the present invention provide systems and methods for detection and/or measurement of gaseous components of multiphase mixtures containing one or more hydrocarbons that may be retrieved down a wellbore or may be being transported in a pipeline. More specifically, but not by way of limitation, embodiments of the present invention may provide for separation of the gaseous components from the multiphase mixtures and detection and/or measurement of the separated gaseous components by direct oxidation or reduction. | 06-17-2010 |
20110031972 | METHOD AND SYSTEM OF DETERMINING AN ELECTRICAL PROPERTY OF A FORMATION FLUID - Determining an electrical property of a formation fluid. At least some of the illustrative embodiments are methods comprising drawing formation fluids into a tool within a borehole, applying a swept frequency electric field to the formation fluids by way of a first winding, inducing a current flow in a second winding based on the swept frequency electric field, and determining a property of the formation fluids based, at least in part, on the current flow in the second winding. | 02-10-2011 |
20110156707 | METHOD OF STUDYING ROCK MASS PROPERTIES AND APPARATUS FOR THE IMPLEMENTATION THEREOF - The rock mass thermal excitation is performed by means of pumping the flush fluid through the wellbore using a tubing string, the flush fluid temperature differs from the rock mass temperature. Before the thermal excitation, during the thermal excitation and after the termination thereof differential electrical signals proportional to the well bore temperature difference are registered by at least one pair of the temperature transducers positioned along the wellbore axis. The distances between the transducers in the pairs and the number of pairs is selected in advance based on the required accuracy of the determination of the rock mass areas with different properties, minimum and maximum possible length of the rock mass areas identified and the nature and degree of the wellbore temperature noise. Differential electrical signals of the temperature transducers measured before the rock mass excitation start are compared with the differential electrical signals from the same temperature transducers measured during the thermal excitation and the differential electrical signals of different temperature transducers positioned along the wellbore are compared with one another. Based on the comparison results of the differential electrical signals the difference of different rock mass areas are characterized by their properties and the boundaries between the rock mass areas with different properties are identified. | 06-30-2011 |
20120043966 | Method and Apparatus for Determining Formation Water Saturation During Drilling - A method for determining water saturation in a subsurface formation include determining an invasion depth in the formation from a plurality of measurements made within a wellbore drilled through the formation. The measurements have different lateral depths of investigation into the formation. Carbon and oxygen in the formation are measured at substantially a same longitudinal position as at a position of the determining the invasion depth. The measured carbon and oxygen and the invasion depth are used to determine the water saturation in a substantially uninvaded part of the formation. | 02-23-2012 |
20120068711 | PAD DEVICE FOR RESISTIVITY IMAGING IN THE WELLS WITH OIL BASED DRILLING FLUID - An apparatus and method for reducing coupling between at least one measure electrode and at least one return electrode in a logging tool in a borehole with non-conductive drilling fluid using a conductive shield disposed between the at least one measure electrode and the at least one return electrode. The apparatus may be configured to impart an electrical current into a formation and to receive a return current from the formation. The method may include using the apparatus. | 03-22-2012 |
20120086454 | SAMPLING SYSTEM BASED ON MICROCONDUIT LAB ON CHIP - An apparatus and method for estimating a parameter of interest in a downhole fluid using fluid testing module. The fluid testing module may include: a substrate comprising at least one microconduit, and a sensor. The sensor may be disposed within the at least one microconduit or external. The apparatus may include a fluid mover for moving fluid within the microconduit. The method includes estimating a parameter of interest using the fluid testing module. | 04-12-2012 |
20120092015 | Apparatus And Method For Capacitive Measuring Of Sensor Standoff In Boreholes Filled With Oil Based Drilling Fluid - An apparatus and method for estimating the at least one resistivity parameter using at least one processor to estimate capacitance information, wherein the capacitance information is estimated using only one selected frequency electromagnetic signal. The apparatus may include at least one measure electrode. The apparatus may also include a transverse antenna. The method may include imparting an electric current at only one selected frequency into a formation using the at least one measure electrode. The method may also include using capacitance information to estimate a standoff between the at least one measure electrode and a borehole wall. In some embodiments, the estimated capacitance information may be used to reduce errors due to eccentricity. | 04-19-2012 |
20120126816 | METHOD OF MONITORING A HYDROCARBON RESERVOIR - A method of monitoring an extent of a hydrocarbon reservoir ( | 05-24-2012 |
20120139542 | SUBSURFACE WATER CHANNEL DETECTION - A system for detecting a location of a subsurface water channel includes an anchor electrode for disposal in a first body of water and a mobile electrode for disposal in a second body of water. An electric current source can be coupled to at least one of the mobile electrode and the anchor electrode to generate an electric current between the mobile electrode to the anchor electrode. A lead line can be coupled to the mobile electrode to enable the mobile electrode to move a distance in the second body of water. An ammeter can be coupled to the anchor electrode to measure the electric current from the mobile electrode. A processor can compare the current with the length of the lead line to determine the location of the subsurface water channel. | 06-07-2012 |
20120169343 | FRACTURE DETECTION VIA SELF-POTENTIAL METHODS WITH AN ELECTRICALLY REACTIVE PROPPANT - This invention relates to a method for evaluating and measuring the geometry of a fracture. | 07-05-2012 |
20120268134 | ELECTRO-CHEMICAL SENSOR - An electrochemical sensor for the presence or concentration of an analyte has at least one electrode and at least one electrochemically active species able to undergo electrochemical reaction in response to electrical potential applied to the electrode, where the said reaction is modified by the presence of the analyte. This sensor has the novel characteristic that at least one said electrochemically active species is encapsulated within polymer particles. These particles are preferably formed from an amorphous polymer with a glass transition temperature above the temperature of the fluid to which the sensor is exposed. The encapsulating polymer protects the analyte species from degradation, but a small analyte such as a hydrogen or bisulfide ion can pass through the polymer and undergo reaction at the active species. | 10-25-2012 |
20120274328 | AXIAL HIGH VOLTAGE TRANSFORMER WITH SIGNAL PASS-THROUGH ABILITY - A high voltage power supply particularly for use in small diameter spaces such as in oil well logging devices. An axial linear high voltage step-up transformer has an integral through hole in the internal ferrite, low voltage sensing signals may be passed through from the output section of the power supply. In addition, a magnetic field shield is designed into the device to prevent eddy currents from forming in the metallic pressure vessel housing which is used to contain the neutron generating tube which is under pressure of an insulating gas such as sulfur hexafluoride. By constructing an axial transformer, and passing the signal leads through the internal hole, the largest amount of internal dielectric may be utilized, increasing the reliability of the transformer. By containing the magnetic field and limiting the eddy currents induced in outside metals, the converter efficiency may be raised to the maximum possible. | 11-01-2012 |
20130027042 | Fluid Sensor and Method of Using Same - A fluid sensor and method for determining at least one parameter of a fluid of a wellbore is provided. The fluid sensor has a base positionable on a downhole tool and a pair of electrodes. The base is provided with insulation. The pair of electrodes is operatively positioned in the insulation. The pair of electrodes has a space therebetween for passage of the wellbore fluid therethrough. A first of the pair of electrodes is interlaced with a second of the pair of electrodes such that at least a portion of the second of the pair of electrodes is surrounded by the first of the pair of electrodes. A voltage applied across the pair of electrodes generates a current therebetween whereby at least one parameter of the wellbore fluid may be determined. The fluid sensor is deployable into the wellbore via the downhole tool. | 01-31-2013 |
20130063149 | REDUCING FLUID CAPACITANCE AND CONDUCTANCE EFFECTS ON PIEZOELECTRIC RESONATOR MEASUREMENTS - An apparatus for estimating a property of a fluid in a borehole penetrating the earth includes a piezoelectric material configured to be at least partially immersed in the fluid and embedded with a first electrode pair and a second electrode pair. An electronic unit is coupled to the first electrode pair and the second electrode pair and configured to measure motion impedance of the fluid caused by motion of the piezoelectric material by applying a first electrical stimulus to the first electrode pair and a second electrical stimulus to the second electrode pair and by receiving a first electrical signal from the first pair of electrodes and a second electrical signal from the second pair of electrodes to estimate the property. The resulting motion impedance measurement has a reduced influence from electrical properties of the fluid. | 03-14-2013 |
20140002088 | WELL MONITORING | 01-02-2014 |
20140062487 | System and Method for Generating Fluid Compensated Downhole Parameters - Systems, tools and techniques for generating downhole parameters of a wellbore penetrating a subterranean formation and having a downhole fluid ( | 03-06-2014 |
20140111207 | System and Method for Deep Detection of Petroleum and Hydrocarbon Deposits - A system and method for deep detection of petroleum and hydrocarbon deposits is disclosed. The system includes a sensing array that includes a plurality of electrodes positioned in the ground at a testing site, a sensing device, and a system for generating a seismic event that generates below-ground signals that are received by the sensing array. The system enables detection and depth determination of underground features such as petroleum and hydrocarbon deposits at greater depths compared to conventional systems. | 04-24-2014 |
20140253128 | Fluid Determination In A Well Bore - A fluid measurement system ( | 09-11-2014 |
20140333307 | Downhole Salinity Measurement - A downhole salinity measurement and logging sensor system has multiple cells, each to measure conductivity, temperature and pressure of fluids at depths of interest in a wellbore. The multiple cells protect against effects of non-homogeneous wellbore fluids. The system also determines salinity of the liquid in the wellbore from conductance measurements, and stores the salinity data along with the temperature and pressure readings from the well. The sensors of conductivity, temperature and pressure are made using micro-fabrication technologies, and the system is packaged to comply with harsh downhole environments. The system may be deployed in the well with coiled tubing (CT), wireline or vehicles with a robotic system. The system can be deployed with an onboard memory, or with wireline surface access for real time access to measurement data or programming the device. | 11-13-2014 |
20140333308 | ADVANCED DETECTOR SYSTEM AND METHOD USING FORWARD THREE-DIMENSIONAL INDUCED POLARIZATION METHOD FOR TBM CONSTRUCTION TUNNEL - Disclosed is an advanced detector system and method using a forward three-dimensional induced polarization method for a TBM (Tunnel Boring Machine) construction tunnel. A narrow detection space of a full-face excavated tunnel is fully used, a controller controls doors of a source and measuring electrode compartment and a shielding electrode compartment to open and controls a corresponding hydraulic delivery device to automatically and quickly arrange a source electrode system, a measuring electrode system and a shielding electrode system. Under the action of a shielding current system, tomography detection supply current is directed ahead of the working face. Three-dimensional geologic information can be obtained, and the relationship between an induced polarization half-decay time difference and a water quantity can be used to quantitatively forecast the water quantity of a water-bearing body, and meanwhile, the half-decay time difference parameter has a high capacity of distinguishing free water from bound water. | 11-13-2014 |
20140375320 | METHOD OF LEAKAGE CURRENT AND BOREHOLE ENVIRONMENT CORRECTION FOR OIL BASED MUD IMAGER - A correction method for resistivity measurements of formation surrounding a borehole includes deploying a logging tool in the borehole and having a standoff in between the logging tool and the wall of the borehole, measuring a total current entering into the pair of current electrodes, computing a leakage current in the sensor pad caused by an internal capacitive impedance between the pair of current electrodes and the main body of the sensor pad, computing a measuring current to enter into the formation for the resistivity measurements by subtracting the leakage current from the total current, computing an external capacitive impedance between the current electrodes and the formation, utilizing a pre-built chart to obtain a geometric factor based on the external capacitive impedance, and computing resistivity of the formation based on the geometric factor. | 12-25-2014 |
20140375321 | SENSOR DEVICE - Provided herein is a sensor device that may include a first electrode pair, a second electrode pair, and a detector. The first electrode pair may be covered with a protective film. The second electrode pair may have at least a portion thereof exposed to liquid. The detector may be configured to detect a property of the liquid by using a value concerning an electrical conductivity of the liquid as determined by using the second electrode pair and a value concerning a capacitance of the first electrode pair. | 12-25-2014 |
20150054512 | DIELECTRIC SPECTROSCOPY FOR FILTRATE CONTAMINATION MONITORING DURING FORMATION TESTING - An apparatus for estimating a volume fraction of a formation fluid in a sample having a filtrate contaminant includes: a carrier configured to be conveyed through a borehole; a downhole fluid extraction device disposed at the carrier and configured to extract a sample of a formation fluid through a wall of the borehole; and a dielectric spectrometer and configured to transmit electromagnetic energy into the extracted sample at a plurality of frequencies and to measure a plurality of responses to determine a permittivity of the extracted sample fluid as a function of frequency. The apparatus further includes a processor configured to receive the permittivity of the extracted sample as a function of frequency from the dielectric spectrometer and to estimate the volume fraction of the formation fluid using a permittivity at a selected frequency in the plurality of frequencies for the sample as measured by the dielectric spectrometer. | 02-26-2015 |
20150077119 | THREE-DIMENSIONAL FOCUSING INDUCED POLARIZATION EQUIPMENT FOR ADVANCED GEOLOGICAL PREDICTION OF WATER INRUSH DISASTER SOURCE IN UNDERGROUND ENGINEERING - The invention discloses three-dimensional focusing induced polarization equipment for advance geological prediction of a water inrush disaster source in underground engineering, comprising a constant-current multiplex transmitter, an intelligent multichannel receiver, an automatic multi-electrode switch, an industrial personal computer, an observation electrode array and shielding electrodes, wherein electrodes in the observation electrode array are respectively used as a source electrode and observation electrodes; the industrial personal computer controls the constant-current multiplex transmitter to transmit currents of the same polarity to the shielding electrodes and the source electrode, so that the currents of the source electrodes are nearly directed straight ahead of a driving face under the action of the shielding electrodes; the observation electrodes are used for scanning data acquisition, and the data are fed back to the industrial personal computer through the intelligent multi-channel receiver; and the industrial personal computer controls the automatic multi-electrode switch to change the source electrode. | 03-19-2015 |
20150130468 | APPARATUS AND METHOD FOR MONITORING A FLUID - A fluid monitoring apparatus includes a housing and a tracer sensor attached to an exterior of the housing. The housing has at least one flow passage for a fluid sample and a port for the tracer sensor to monitor the fluid sample in the housing. In one example, the monitoring apparatus may include a plurality of tracer sensors attached to the housing, wherein the tracer sensors are interchangeably attached to the housing. In one embodiment, the monitoring apparatus may be attached to a first well for detecting the presence of a tracer in the first well, wherein the tracer is supplied from a second well. | 05-14-2015 |
20150355366 | DEVICES AND METHODS FOR DETECTING CHEMICALS - Devices and methods for detecting chemicals are disclosed. A device configured for use in a wellbore includes a sensor including a quantum tunneling composite (QTC) material configured to exhibit a change in electrical resistance responsive to the sensor contacting a target chemical. The sensor includes electrical resistance measuring circuitry operably coupled to the QTC material and configured to measure the electrical resistance of the QTC material and output a sensor signal indicating the electrical resistance. A method comprises deploying the sensor into the wellbore, measuring the electrical resistance of the QTC material, and determining the presence of the target chemical responsive to detecting changes in the electrical resistance of the QTC material. Another method includes selecting at least one of the QTC material and an active material to interact with a target wellbore chemical to change the electrical resistance of the QTC material. | 12-10-2015 |
20150369947 | Systems and Methods for Determining Annular Fill Material Based on Resistivity Measurements - Systems and methods for determining annular fill material using resistivity measurements are provided. In one example, a method is provided. The method may include placing a downhole tool into a cased well. The well may include an annulus located between a casing and a formation. The method may also include determining, by the downhole tool, resistivity measurements associated with portions of the well. Furthermore, the method may include identifying, by a computer, based at least in part on the resistivity measurements, the presence of annular fill materials in the well. Additionally, the method may include determining, by the computer based at least in part on the resistivity measurements, respective locations of the annular fill materials in the well. | 12-24-2015 |
20150369954 | Optical Push-Pull Interferometric Sensors for Electromagnetic Sensing - A method of measuring an electromagnetic field in a formation can include installing an electromagnetic sensor with improved sensitivity, the sensor including multiple optical waveguides and respective multiple materials, and in response to exposure to the electromagnetic field, the materials changing shape in opposite directions. A well system can include an optical electromagnetic sensor which measures an electromagnetic field in a formation, and wherein optical path lengths or phases in optical waveguides of the sensor change both positively and negatively in response to exposure to the electromagnetic field. A method of monitoring a formation can include installing an optical electromagnetic sensor in a wellbore which penetrates the formation, and an optical path length/phase in an optical waveguide of the sensor increasing in response to exposure to the electromagnetic field, and an optical path length/phase in another optical waveguide of the sensor decreasing in response to exposure to the electromagnetic field. | 12-24-2015 |
20150377998 | ACCURATE WATER CUT MEASUREMENT - A method of incorporating the influence of diffusion into the CPMG-based T2 measurement for one or more of the following: water cut measurement; performing inline measurements of flow rate; density; and rheology of a flowing fluid. The method includes conducting a “standard T1/T2 experiment” at least twice by providing one scan without a field gradient during the CMPG echo train. Then, providing a second scan with the application of a gradient, where in the second experiment the measured T2 (T2 | 12-31-2015 |
20160033468 | MULTI-COMPONENT FLUID DETERMINATION IN A WELL BORE - A fluid measurement system and method for determining component mixtures flowing in a conduit such as an oil well. The system includes a sensor wire for location in a well bore; a signal generator for injecting a high frequency signal along the wire; a data acquisition unit to record first reflected signals received from the wire; a system criteria unit to maintain a data set relevant to the system, and a processor unit operable to act upon the first reflected signals and the data set to establish an output indicative of component fluid within the well bore from which the mixture of fluids flowing within the well bore can be determined. An iterative process can be used with waveguide and probabilistic models. | 02-04-2016 |
20160178785 | Methods and Systems for Monitoring Spontaneous Potentials in Downhole Environments | 06-23-2016 |
20160178788 | Measuring Fluid Conductivity | 06-23-2016 |
20160201447 | HYDRAULIC FRACTURE PERMEABILITY CHARACTERIZATION FROM ELECTROMAGNETIC MEASUREMENTS | 07-14-2016 |
324325000 | To determine fluid entry | 1 |
20110101983 | Logging Tool - The invention relates to a logging tool ( | 05-05-2011 |