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| Number | Title | Issue Date |
| 8176979 | Injection well surveillance system A method and apparatus for surveying a well in real-time and responding to operational conditions in response to the surveillance. According to one or more aspects of the present disclosure a method for surveillance of a well includes providing a producing a fluid f... | 05/15/2012 |
| 8171989 | Well having a self-contained inter vention system A system includes a subsea well and a carousel of tools. The carousel of tools is adapted to automatically and selectively deploy the tools in the well to perform an intervention in the well. The flow of fluid in a well is halted, and a tool is deployed from within ... | 05/08/2012 |
| 8171990 | In-situ formation strength testing with coring A method and apparatus for estimating one or more formation properties using in-situ measurements conducted at or near a coring location include a coring tool adapted to cut a core sample in a formation, a member having a distal end that engages a borehole wall subs... | 05/08/2012 |
| 8171991 | Drillstring swivel torque monitor Apparatus for rotationally locking the swivel of a drillstring during downhole backoff, directional drilling, and similar operations, and for continuous monitoring of the torque level in the drillstring. A first member has a collar which attaches to one side of the ... | 05/08/2012 |
| 8167038 | System and method for deflection compensation in power drive system for connection of tubulars The present invention generally provides methods and apparatus for connecting threaded members while ensuring that a proper connection is made, particularly for premium grade connections. In one embodiment, a method of connecting threaded tubular members for use in ... | 05/01/2012 |
| 8162048 | Method of delivering frac fluid and additives A method for the controlled delivery of a fracturing fluid to a well bore comprises formulating an aqueous base fluid such that it meets or exhibits desired physical and chemical characteristics for an optimal fracturing fluid. The formulation of the aqueous base fl... | 04/24/2012 |
| 8146656 | Method to measure injector inflow profiles A method of determining the inflow profile of an injection wellbore, comprising stopping injection of fluid into a formation, the formation intersected by a wellbore having a section uphole of the formation and a section within the formation, monitoring temperature ... | 04/03/2012 |
| 8146655 | Methods and apparatus for downhole characterization of emulsion stability A method (and corresponding apparatus) for downhole fluid analysis of petroleum formation fluids. The method includes capturing in a chamber of a downhole tool at least two immiscible formation fluids in a generally segregated state (the fluids including petroleum),... | 04/03/2012 |
| 8146654 | Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles A waxy oil-external emulsion is provided for injection into a selected zone of a subsurface formation. The selected zone is typically a high permeability zone. The emulsion generally comprises oil, added wax, and water. The emulsion may also include an emulsifying a... | 04/03/2012 |
| 8141631 | Deployment of underground sensors in casing The present disclosure discloses a subsurface formation fluids monitoring system, and a method thereof, integrated on a casing or tubing sub having an inner and an outer surface and defining an internal cavity. The system also includes a sensor mounted on the outer ... | 03/27/2012 |
| 8132622 | Surface instrumentation configuration for drilling rig operation Methods and systems for a surface instrumentation configuration for drilling rig-related operations are described. In one embodiment, pack off material is positioned in an annulus between a casing along sides of a borehole and a drill tubing in the borehole, wherein... | 03/13/2012 |
| 8132621 | Multi-zone formation evaluation systems and methods A formation evaluation system and method. A formation evaluation system includes an assembly interconnected as part of a tubular string and displaceable to multiple positions proximate each of multiple zones intersected by a wellbore. The assembly includes at least ... | 03/13/2012 |
| 8122951 | Systems and methods of downhole thermal property measurement Methods and systems of measuring in-situ time variant temperature for subsurface formations utilizing an active heating and/or cooling device and temperature sensors for purposes of characterizing hydrocarbon-bearing formations by deriving formation thermal properti... | 02/28/2012 |
| 8104536 | Kerogen extraction from subterranean oil shale resources The present invention is directed to methods for extracting a kerogen-based product from subsurface (oil) shale formations, wherein such methods rely on fracturing and/or rubblizing portions of said formations so as to enhance their fluid permeability, and wherein s... | 01/31/2012 |
| 8096354 | Sensing and monitoring of elongated structures Methods and related systems for use with a wireline tool system. A wireline cable designed to deploy a wireline tool into a wellbore from a surface. The wireline cable includes one or more conducting members for communication between the wireline tool and the surfac... | 01/17/2012 |
| 8091633 | Tool for locating and plugging lateral wellbores A tool used for treating and/or maintaining a wellbore that includes acoustic transducers for locating a lateral wellbore that intersects a primary wellbore. The tool includes a sensor to sense water and/or gas, and if the water and/or gas enters the primary wellbor... | 01/10/2012 |
| 8082990 | Method and system for placing sensor arrays and control assemblies in a completion A technique facilitates recovery of hydrocarbons in subterranean formations by simplifying the joining of completion assemblies downhole. The system and methodology utilize a well completion having completion assemblies that may be selectively engaged downhole witho... | 12/27/2011 |
| 8056623 | Surface formation monitoring system and method A subsurface formation monitoring system and method is described. The system includes a conductive piping structure positionable within a borehole extending into a subsurface formation. The conductive piping structure is electrically decoupled from a production tubi... | 11/15/2011 |
| 8051909 | Method and apparatus for positioning the proximal end of a tubular string above a spider Method and apparatus for handling a supported tubular string with a string elevator and a spider on a rig to prevent damaging contact between the string elevator and spider while facilitating further connections of add-on tubular segments. The string elevator and su... | 11/08/2011 |
| 8047283 | Torque sub for use with top drive A torque sub for use with a top drive is disclosed. A method of connecting threaded tubular members for use in a wellbore includes operating a top drive. The top drive rotates a first threaded tubular member relative to a second threaded tubular member. The method f... | 11/01/2011 |
| 8037934 | Downhole tool delivery system An apparatus for use in deployment of downhole tools is disclosed. Preferably, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics compartment, a tool attachment portion, and a first flow through core. The ... | 10/18/2011 |
| 8028750 | Force balanced rotating pressure control device Force balancing adjusts hydraulic fluid pressure in an upper piston area of a Rotating Pressure Control Device (RPCD) that has an inner housing rotatably engaged within an outer housing by an upper bearing and a lower bearing. The hydraulic fluid pressure is adjuste... | 10/04/2011 |
| 8016034 | Methods of fluid placement and diversion in subterranean formations Improved methods of placing and/or diverting treatment fluids in subterranean formations are provided. In one embodiment, the methods comprise: introducing a diverting material into a subterranean formation penetrated by a well bore to reduce or prevent the flow of ... | 09/13/2011 |
| 8011430 | Method to measure injector inflow profiles A method of determining the inflow profile of an injection wellbore, comprising stopping injection of fluid into a formation, the formation intersected by a wellbore having a section uphole of the formation and a section within the formation, monitoring temperature ... | 09/06/2011 |
| 8002031 | Independent measuring and processing probe for preliminary studies on a well The invention concerns an independent measuring and processing probe designed to be lowered in a tube for temporarily installation at the bottom of a hydrocarbon well. It includes removable anchoring resources (3, 4) capable of anchoring the probe to a... | 08/23/2011 |
| 7997340 | Permanent downhole deployment of optical sensors The present invention involves methods and apparatus for permanent downhole deployment of optical sensors. Specifically, optical sensors may be permanently deployed within a wellbore using a casing string. In one aspect, one or more optical sensors are disposed on, ... | 08/16/2011 |
| 7980305 | Ram BOP position sensor A method to determine movement of a wellhead component includes sensing a relative position of the wellhead component with a magnetostrictive sensor over a selected interval of time. The method includes sending a signal from the magnetostrictive sensor to a data acq... | 07/19/2011 |
| 7967066 | Method and apparatus for Christmas tree condition monitoring A method for monitoring a Christmas tree assembly installed on a subsea hydrocarbon well includes receiving a plurality of parameters associated with the Christmas tree assembly. A health metric for the Christmas tree assembly is determined based on the parameters. ... | 06/28/2011 |
| 7950451 | Annulus mud flow rate measurement while drilling and use thereof to detect well dysfunction Methods and apparatus are described that combine a measurement of the physical velocity of material within the annulus of a well between the drill pipe and the wall of the well with a measurement of the area of the flow as determined from a measurement of distance b... | 05/31/2011 |
| 7942202 | Continuous fibers for use in well completion, intervention, and other subterranean applications Methods and related systems for use with a continuous fiber based system for use with well bore completions. Wherein a plurality of continuous fibers are deployable into a portion of a well bore completion, such that a fiber management module is adapted and position... | 05/17/2011 |
| 7938179 | Method of using a charged chamber pressure transmitter for subterranean tools A sensor and transmitter is employed with a pressurized chamber of a downhole tool to be able to tell at a glance when the tool is delivered for service that it is properly charged. The sensor and transmitter can be integrated within the tool so as to be protected f... | 05/10/2011 |
| 7938178 | Distributed temperature sensing in deep water subsea tree completions A deep water subsea tree completion having a distributed temperature sensing system. In a described embodiment, a method of installing an optical fiber in a well includes the steps of: conveying an optical fiber section into the well; and monitoring a light transmis... | 05/10/2011 |
| 7934548 | Spooled device retaining system An embodiment of a system for preventing the loss of a spooled device into a wellbore comprises a housing defining an aperture extending therethrough, the aperture sized for allowing the spooled device to pass therethrough, a sensor to measure at least one condition... | 05/03/2011 |
| 7926562 | Continuous fibers for use in hydraulic fracturing applications Methods and related systems are described for use with hydraulic fracturing and other oilfield applications. A tool body is positioned in a wellbore at a location near a subterranean rock formation being fractured. The tool body contains a plurality of deployable co... | 04/19/2011 |
| 7913757 | Methods of formulating a cement composition A method of cementing a wellbore in a subterranean formation, comprising formulating a cement composition that may be suitable for long-term zonal isolation of the subterranean formation by evaluating a subterranean formation, preparing a base cement composition, de... | 03/29/2011 |
| 7905281 | Method for determining the size of tubular pipe to be inserted in a borehole A method for determining the size of tubular pipe to be inserted into an interval of cased or uncased borehole is disclosed. The position of the borehole wall or innermost casing surface in the interval is determined and a window length that is less than the length ... | 03/15/2011 |
| 7900699 | Method and apparatus for logging a well using a fiber optic line and sensors A system and method to log a wellbore, comprising a logging tool adapted to be deployed in a wellbore environment, the logging tool including at least one sensor for taking a measurement of the wellbore environment. The sensor is a fiber optic sensor and the system ... | 03/08/2011 |
| 7900700 | Method and system for cleat characterization in coal bed methane wells for completion optimization The invention generally relates a method of determining completion criteria for a coal bed methane reservoir having a plurality of coal seams. The method involves obtaining an acoustic log and a resistivity image log for each of the plurality of coal seams, determin... | 03/08/2011 |
| 7896069 | Method of applying a string of interconnected strain sensors to a cylindrical object A string of interconnected strain sensors applied to a cylindrical object for monitoring deformation of the object. The string of interconnected strain sensors is applied in a selected zig-zag pattern. A possibility is to drape a pliable support structure around the... | 03/01/2011 |
| 7896073 | Apparatus for formation resistivity imaging in wells with oil-based drilling fluids Sequential measurements are made using a two terminal resistivity imaging device wherein the measure electrodes are activated sequentially with the remaining electrodes in a floating mode. This eliminates the hardware requirements for focusing electrodes, prevents g... | 03/01/2011 |
