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| Number | Title | Issue Date |
| 8109157 | Methods and apparatus of downhole fluids analysis A fluid sampling and analysis module for a downhole fluid characterization apparatus configured for operation downhole, within a borehole. The fluid sampling and analysis module comprises a primary flowline for fluids withdrawn from a formation to flow through the f... | 02/07/2012 |
| 8109155 | Methods and apparatus to measure fluid flow rates Example methods and apparatus to measure fluid flow rates are disclosed. A disclosed example apparatus includes a circulator to selectively circulate a fluid in a flowline, a generator thermally coupled to the flowline at a first location and controllable to form a ... | 02/07/2012 |
| 8099241 | Method and apparatus for real time oil based mud contamination monitoring The present invention is a method and apparatus for determining oil based mud contamination of a hydrocarbon fluid obtained from a wellbore during a formation testing. The invention includes receiving a model for simulating the contamination and receiving an empiric... | 01/17/2012 |
| 8082780 | Methods and apparatus for decreasing a density of a downhole fluid Methods and apparatus for decreasing a density of a downhole fluid are described. An example apparatus to analyze a downhole fluid includes a chamber to decrease a density of at least a portion of a sample of a downhole fluid. Additionally, the example apparatus inc... | 12/27/2011 |
| 8078403 | 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 geol... | 12/13/2011 |
| 8072840 | Fracture clusters identification Method for identifying one or more fracture clusters in a formation surrounding a reservoir. In one implementation, the method may include generating a P to S image, comparing the P to S image to one or more images from a borehole, and identifying one or more fractu... | 12/06/2011 |
| 8069932 | Method and apparatus for determining formation pararmeters using a seismic tool array A method and apparatus for determining formation parameters including a seismic array for receiving seismic waves at plurality of depth simultaneously, thereby enabling a determination of a formation velocity by using a difference in the seismic waves received by th... | 12/06/2011 |
| 8069913 | Method and apparatus for detecting acoustic activity in a subsurface formation A method of monitoring acoustic activity in a formation from a wellbore includes positioning a flow manipulation device into the wellbore, the flow manipulation device defining a flow path through which fluid may flow. Fluid is then pumped into the wellbore and thro... | 12/06/2011 |
| 8061470 | Method and apparatus for deploying a plurality of seismic devices into a borehole and method thereof Deploying systems and methods for deploying a plurality of seismic devices into a borehole comprising a cable including a plurality of inter-connected cable segments and ellipsoid seismic units with at least two rows of offset seismic protrusions to establish at lea... | 11/22/2011 |
| 8061048 | Apparatus for azimuth measurements using gyro sensors An apparatus for azimuth measurements is provided. The apparatus comprises a housing and a plurality of gyro sensors aligned in the housing. Each of the plurality of gyro sensors has an input axis for angular velocity measurements. There is provided a drive unit for... | 11/22/2011 |
| 8061047 | Active positioning of downhole devices using spherical motors Methods and related systems are described for downhole positioning of sensors such as accelerometers, gyroscopes, tiltmeters and geophones. The sensor or sensors are mounted within the spherical rotor of a spherical motor such that the device can be actively positio... | 11/22/2011 |
| 7937223 | Downhole fluid analysis A method that uses downhole fluid analysis in order to selectively collect and retain formation fluid samples in a drilling environment, as well as, control drilling using downhole fluid analysis. ... | 05/03/2011 |
| 7819683 | Contact pin assembly for a high voltage electrical connection There is disclosed a contact pin assembly for a high voltage electrical connection, the contact pin assembly comprising: an electrically-conductive outer member which is supportable from a support member, the outer member having a ... | 10/26/2010 |
| 7748461 | Method and apparatus for multi-drop tool control A hydraulic actuator is connected between a downhole tool and a hydraulic control line for operating the downhole tool through an actuation sequence. The hydraulic actuator comprises a valve shuttle section having an inlet port in connection with the hydraulic contr... | 07/06/2010 |
| 7736067 | Fiber optic seal A fiber sealing apparatus in which a seal about an outer fiber optic cable may be formed relatively independently of a seal about an inner fiber optic line. The fiber optic sealing apparatus may comprise a housing containing a central passageway there through. The h... | 06/15/2010 |
| 7735555 | Completion system having a sand control assembly, an inductive coupler, and a sensor proximate to the sand control assembly A completion system for use in a well includes a first completion section and a second section. The first completion section has a sand control assembly to prevent passage of particulates, a first inductive coupler portion, and a sensor positioned proximate to the s... | 06/15/2010 |
| 7731515 | High voltage wet mateable electrical connector An electrical connector is provided for use in establishing watertight connections, such as for subsea applications. The connector comprises a receptacle component (100) that includes a fluted, insulated male contact pin (52) with an isolation tube ( | 06/08/2010 |
| 7731421 | Fluid level indication system and technique A technique that is usable with a well includes changing the temperature of a local environment of a distributed temperature sensor, which is deployed in a region of the well and using the sensor to acquire measurements of a temperature versus depth profile. The reg... | 06/08/2010 |
| 7720325 | Optical turnaround system A technique is provided for utilizing an optical fiber in a variety of sensing applications and environments by beneficially routing the optical fiber. A continuous optical fiber is created to provide optical continuity between two ends of the optical fiber. The opt... | 05/18/2010 |
| 7712541 | System and method for protecting downhole components during deployment and wellbore conditioning A technique is provided to temporarily protect well system components during transport, movement downhole and/or initial downhole operations. A sacrificial material is formed as a protective sacrificial element disposed proximate susceptible well system components. ... | 05/11/2010 |
| 7712540 | Flow control device A choke that is usable with a well includes an inlet port and an outlet port. The choke also includes pressure drop stages between the inlet port and the outlet port. Each of the pressure drop stages is adapted to create part of an overall pressure differential betw... | 05/11/2010 |
| 7712524 | Measuring a characteristic of a well proximate a region to be gravel packed A gravel pack service tool is lowered into a well. At least one sensor proximate a well region to be gravel packed measures at least one characteristic of the well, where the measuring is performed during a gravel pack operation by the gravel pack service tool. The ... | 05/11/2010 |
| 7703541 | Rotary actuator mechanism for a downhole tool A tool that is usable with a well includes a movable element and a curved actuator. The curved actuator is adapted to move in a curved path that at least partially surrounds a longitudinal axis of the tool to actuate the element. ... | 04/27/2010 |
| 7693376 | Apparatus and method for preventing unwanted exposure of a device to an undesirable substance Apparatus for preventing unwanted exposure of one or more devices to one or more undesirable substances includes at least one barrier disposed between the device and the undesirable substance. At least one shield substance is provided between the barrier and the dev... | 04/06/2010 |
| 7684656 | Fiber optic temperature and pressure sensor and system incorporating same A sensing system including a sensor having an enclosure that defines a chamber, a fiber optic segment extending from outside the enclosure into the chamber, and a sequence of optical processing elements within the chamber. The elements include a fiber Bragg grating,... | 03/23/2010 |
| 7675253 | Linear actuator using magnetostrictive power element A linear actuator includes a substantially cylindrical magnetostrictive element disposed in a housing. A retainer is cooperatively engaged with the housing and an exterior of the magnetostrictive element such that relaxed portions of the magnetostrictive element are... | 03/09/2010 |
| 7674124 | Contact pin assembly for a high voltage electrical connection There is disclosed a contact pin assembly for a high voltage electrical connection, the contact pin assembly comprising: an electrically-conductive outer member which is supportable from a support member, the outer member having a bore extending therethrough, the bo... | 03/09/2010 |
| 7668411 | Distributed vibration sensing system using multimode fiber An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produc... | 02/23/2010 |
| 7665536 | System and method for preventing cross-flow between formations of a well In general, a system and valve is provided to prevent the cross flow between formations during the shut-in period of a well intersecting at least two formations, with flow from at least one of the formations being controlled by a multi-position valve. In one embodim... | 02/23/2010 |
| 7665527 | Providing a rechargeable hydraulic accumulator in a wellbore A rechargeable hydraulic accumulator is provided in a wellbore, and a component is actuated by discharging the hydraulic accumulator. The hydraulic accumulator is recharged by increasing pressure in a fluid conduit. ... | 02/23/2010 |
| 7640977 | System and method for connecting multiple stage completions A technique is provided to facilitate connection of multiple stage completions. A first completion stage is deployed at a wellbore location. Subsequently, the next completion stage is moved downhole into engagement with the first completion stage. The completion sta... | 01/05/2010 |
| 7635029 | Downhole electrical-to-hydraulic conversion module for well completions An apparatus that is usable with a well includes an power converter and a controller. The power converter translates electrical power into hydraulic power downhole in the well to generate a first hydraulic signal to cause a downhole tool to transition to a first sta... | 12/22/2009 |
| 7634168 | Apparatus and method for forming an optical fiber device An apparatus for forming an optical fiber device comprising at least one optical fiber includes a mold having a forming surface, a heating source for heating the mold or the optical fiber, and an insert defining at least one optical fiber locator passage for guiding... | 12/15/2009 |
| 7603009 | Double-ended distributed temperature sensing systems The present invention comprises a system for deploying double-ended distributed temperature sensing (DTS) systems which utilizes less space than prior art systems. In one embodiment, the present invention comprises a cable having at least two independent optical fib... | 10/13/2009 |
| 7600928 | System and method for performing and protecting hybrid line splices A method for providing a protected splice in a hybrid cable that has a fiber optic line and an electrical line includes the steps of providing an optic splice in the fiber optic line; providing a electrical splice in the electrical line proximate to the optic splice... | 10/13/2009 |
| 7600534 | Valve closing device An apparatus capable of moving a shiftable valve member into a closed position, the shiftable valve member mounted in a valve housing having a bore and being moveable between at least one open and at least one closed position relative to the bore, includes at least ... | 10/13/2009 |
| 7595865 | Optical time domain reflectometry for two segment fiber optic systems having an optical amplifier therebetween An optical time domain reflectometry apparatus for sensing a parameter in a region of interest is characterized in that the optical fiber includes a first section into which optical radiation at the probe wavelength is launched and a second section deployed in the r... | 09/29/2009 |
| 7586617 | Controlling a dynamic signal range in an optical time domain reflectometry A technique includes providing an optical source signal to an optical fiber to produce a backscatter signal. A receiver is provided to detect the backscatter signal. During an acquisition period in which the backscatter signal is present, a sensitivity of the receiv... | 09/08/2009 |
| 7584800 | System and method for indexing a tool in a well A technique is provided to control a downhole tool in a well. An indexer is used to adjust a downhole tool to specific positions on a plurality of positions. The indexer is actuated between settings via control fluid input. The indexer is designed such that a unique... | 09/08/2009 |
| 7580797 | Subsurface layer and reservoir parameter measurements Method and system for determining a characteristic of a subsurface formation traversed by a wellbore. A fluid flow rate in the wellbore is established, the flow being associated with fluid movement in one or more layers in the formation. Fluid data is generated from... | 08/25/2009 |