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| Number | Title | Issue Date |
| 8074714 | System, method and apparatus for downhole orientation probe sensor A submersible pump assembly may be radially oriented for pumping well fluid in a deviated or horizontal well. The submersible pump assembly has an instrument housing having a longitudinal axis and incorporated onto the pump assembly. An electrical contact is mounted... | 12/13/2011 |
| 8028751 | Perforation method and apparatus A signature element is attached to a downhole cable or other protected equipment and the signal from a signature position detector is used, at least in part, to control the orientation of a directed perforating device or other directional device. Signal emitting sou... | 10/04/2011 |
| 7980307 | Downhole window finder system An apparatus for finding a pre-existing downhole window includes a body having a deflector ramp and a cavity, and an extendable dog disposed in the cavity, the dog mechanically moveable between a retracted position and an extended position into the pre-existing wind... | 07/19/2011 |
| 7861778 | Pressure orienting swivel arrangement and method A pressure orienting swivel arrangement includes a freely rotatable weight assembly to orient to gravity prior to being urged to a fixed position. In the fixed position, a pin adapter is reactably interengagable with the weight assembly to orient the pin adapter to ... | 01/04/2011 |
| 7841403 | Rotator for wireline conveyed wellbore instruments and method for rotating an instrument in a wellbore An apparatus for rotating an instrument in a wellbore includes a non magnetic housing configured to traverse the interior of the wellbore. The housing has an external diameter smaller than an internal diameter of a casing disposed in the wellbore. A plurality of ele... | 11/30/2010 |
| 7708067 | Apparatus and method for estimating orientation of a liner during drilling of a wellbore An apparatus for use in a wellbore is disclosed that in one aspect includes a drilling assembly configured for use in drilling the wellbore, a liner disposed outside a portion of the drilling assembly that includes a feature at a selected location of the liner, and ... | 05/04/2010 |
| 7631693 | Retrievable plug system and methods of use Apparatus and method for a retrievable plug in coil tubing. A plug is disposed within a tubing and is set within the tubing by an anchoring element placed in gripping engagement with the tubing. The plug also has seal elements disposed therein that are placed in sea... | 12/15/2009 |
| 7584788 | Control method for downhole steering tool A method for determining a rate of change of longitudinal direction of a subterranean borehole includes positioning a downhole tool in a borehole, the tool including first and second longitudinally spaced surveying devices disposed thereon. The method further includ... | 09/08/2009 |
| 7469745 | Apparatus and method to mechanically orient perforating systems in a well The present invention relates to an apparatus and method for using that apparatus to orient a perforating gun or system to minimize or eliminate the damage which may be caused to exterior control conduits, conductors or devices, or to adjacent interior well control ... | 12/30/2008 |
| 7441595 | Method and apparatus for single-run formation of multiple lateral passages from a wellbore A method and apparatus for forming multiple lateral passages from a wellbore into a subsurface earth formation to facilitate enhancement of the production of oil, gas, heavy oil or minerals from the formation. A plurality of lateral passages are formed from a wellbo... | 10/28/2008 |
| 7434620 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 10/14/2008 |
| 7413032 | Self-controlled directional drilling systems and methods System and method of controlling a trajectory of a wellbore comprises conveying a drilling assembly in the wellbore by a rotatable tubular member. The drilling assembly includes a drill bit at an end thereof that is rotatable by a drilling motor carried by the drill... | 08/19/2008 |
| 7403857 | Enhanced measurement of azimuthal dependence of subterranean parameters with filters and/or discretely sampled data A method for estimating an azimuthal dependence of a parameter of a borehole using logging sensor measurements acquired as a function of azimuth of the logging sensors is provided. The method includes acquiring at least one logging sensor measurement and a correspon... | 07/22/2008 |
| 7363717 | System and method for using rotation sensors within a borehole A system and method for using a survey tool within a borehole is provided. The survey tool includes a plurality of rotation sensors each having a sensing axis and a direction of least acceleration sensitivity. The sensing axes of the plurality of rotation sensors ar... | 04/29/2008 |
| 7364007 | Integrated acoustic transducer assembly Acoustic transducers configured with integrated electronics technology are adapted to digitize signal data close to the transducer. The transducers are packaged with a reduced number of elements and sealed for exposure to harsh environments, without oil compensation... | 04/29/2008 |
| 7363967 | Downhole tool with navigation system A downhole tool for use in a well bore comprises an onboard navigation system for determining the location of the tool within the well bore, wherein the tool is moved along at least a partial length of the well bore via an external force. A method of locating a down... | 04/29/2008 |
| 7350410 | System and method for measurements of depth and velocity of instrumentation within a wellbore A survey tool for use in a wellbore includes a downhole portion having an axis. The downhole portion is adapted to move within the wellbore with the axis generally parallel to the wellbore. The survey tool further includes a first acceleration sensor mounted at a fi... | 04/01/2008 |
| 7331387 | Downhole window finder and method of using the same The present invention relates to a downhole method and apparatus for locating a window in a wellbore casing and determining the depth and orientation of said window. Apparatus of the present invention comprises a body (4) and a window engaging member (6 | 02/19/2008 |
| 7331409 | Configurable beacon and method A monitoring system is used to monitor the location and orientation of a downhole tool assembly by detecting an output signal. The downhole tool assembly has a beacon assembly with one or more configurable operation parameters. A transmitting assembly transmits an o... | 02/19/2008 |
| 7322416 | Methods of servicing a well bore using self-activating downhole tool A method of servicing a well bore comprises deploying into the well bore a zonal isolation device operable to self-set at a sensed location, and self-setting the zonal isolation device to hold at the sensed location without receiving command communications from the ... | 01/29/2008 |
| 7322252 | Apparatus for taking measurements in access manholes An apparatus for measuring the location and annular orientation of pipe inverts and other features in manholes. An elongate, telescoping rod is supported centrally in the manhole opening by a pivot assembly that permits the rod to both rotate in the horizontal plane... | 01/29/2008 |
| 7318480 | Tubing running equipment for offshore rig with surface blowout preventer A method performing an operation in a subsea wellhead assembly through a riser extending between the wellhead assembly and a surface platform includes the step of connecting a surface blowout preventer to an upper portion of the riser. Then a tool is connected to a ... | 01/15/2008 |
| 7284606 | Downhole position locating device with fluid metering feature A tool for multiple purposes features one ore more dogs that can engage a collar groove or restriction sub in the wellbore. The dogs are extendable through a sleeve biased in opposed directions and are supported from a mandrel. The dogs can retract into mandrel groo... | 10/23/2007 |
| 7281578 | Apparatus and methods for positioning in a borehole A borehole tool positioning and measuring apparatus and its methods of use are provided. The apparatus and method can be used to centralize a logging tool in a wellbore, or position a logging tool at a desired relative alignment relative to the wellbore perimeter su... | 10/16/2007 |
| 7264048 | Slot cavity A method for accessing a subterranean zone from the surface includes drilling a substantially vertical well bore from the surface to the subterranean zone and forming a slot cavity in the substantially vertical well bore proximate to the subterranean zone. The slot ... | 09/04/2007 |
| 7252144 | Magnetometers for measurement-while-drilling applications A nuclear sensor on a bottomhole assembly (BHA) makes measurements of a property of an earth formation during continued rotation of the BHA. Magnetometers that are susceptible to bias error are deployed on the BHA to make measurements of the magnetic toolface angle.... | 08/07/2007 |
| 7246548 | Well perforating gun Embodied herein is a perforating gun wall that withstands short, high energy pulses of an explosion retained within a loading tube with numerous explosive shaped charges. The perforating gun wall includes two or more layers with an impact strength sufficient to main... | 07/24/2007 |
| 7243719 | Control method for downhole steering tool A method for determining a rate of change of longitudinal direction of a subterranean borehole is provided. The method includes positioning a downhole tool in a borehole, the tool including first and second surveying devices disposed thereon. The method further incl... | 07/17/2007 |
| 7243739 | Coiled tubing directional drilling apparatus A coiled tubing directional drilling apparatus which is operated by a mud motor and is characterized by a fixed housing and a rotary steerable bent housing or sub which is selectively rotatable with respect to the fixed housing at a fixed angle bend by a shifting me... | 07/17/2007 |
| 7240738 | Self-orienting selectable locating collet and method for location within a wellbore A self orienting selectable locating collet including a collet having at least one deflectable finger; an orientation key positioned at the deflectable finger and being deflectable with the finger; and a collet profile disposed at an outside dimension of the collet.... | 07/10/2007 |
| 7213644 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 05/08/2007 |
| 7195079 | Directional reaming system A horizontal directional drilling system is used to drive operation of a guidable reamer assembly connected to a drill string. The guidable reamer assembly preferably has a cutting member with a central longitudinal axis and a support member also having a central lo... | 03/27/2007 |
| 7195062 | Measurement-while-drilling assembly using real-time toolface oriented measurements This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes directional formation evaluation devices on a rotating assembly in conjunction with toolface orientation sensors. The data from the toolface ori... | 03/27/2007 |
| 7182151 | Apparatus and method for horizontal drilling An apparatus and method for horizontally drilling for detecting subsurface features and avoiding such features during closed-loop control of an underground drilling machine. A horizontal drilling system includes a base machine capable of propelling a drill pipe rota... | 02/27/2007 |
| 7165634 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 01/23/2007 |
| 7152680 | Slickline power control interface An apparatus, method, and system for use in operating an electric downhole tool on a non-conductive support line (slickline) by converting a battery voltage to an output voltage suitable for operating the tool. In response to receiving a trigger signal, the output v... | 12/26/2006 |
| 7147060 | Method, system and apparatus for orienting casing and liners A method and system are provided for installing an oriented conduit section in a well-bore having a substantially non-vertical axis. In one example, the system comprises: means for inserting a conduit a the well-bore, wherein the conduit comprises a section to be or... | 12/12/2006 |
| 7147068 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 12/12/2006 |
| 7140435 | Optical fiber conveyance, telemetry, and/or actuation Methods and apparatus comprise a conveyance structure to carry a tool into a wellbore. The conveyance structure contains an optical fiber line to enable communication between the tool and well surface equipment. In one implementation, the conveyance structure compri... | 11/28/2006 |
| 7124827 | Expandable whipstock anchor assembly A whipstock assembly includes a tubular anchor 36 which is expanded into engagement with the casing string 8, and a tubular expander 24 which is forcibly moved into the tubular anchor to expand the tubular anchor downhole into secure engagement ... | 10/24/2006 |
