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| Number | Title | Issue Date |
| 8184371 | Thin film interference filter and bootstrap method for interference filter thin film deposition process control A thin film interference filter system includes a plurality of stacked films having a determined reflectance; a modeled monitor curve; and a topmost layer configured to exhibit a wavelength corresponding to one of the determined reflectance or the modeled monitor cu... | 05/22/2012 |
| 8184295 | Tablet analysis and measurement system The present subject matter relates to multivariate optical analysis systems employ multivariate optical elements and utilize multivariate optical computing methods to determine information about a product carried by light reflected from or transmitted through the pr... | 05/22/2012 |
| 8183863 | Displaced electrode amplifier A displaced electrode amplifier (“DEA”) for measuring signals from high impedance sources. The amplifier may include an operational amplifier (“op-amp”) configured as a unity gain buffer, with a feedback path to the non-inverting input to at least partly com... | 05/22/2012 |
| 8181718 | Perforating gun gravitational orientation system A perforating gun gravitational orientation system includes a perforating gun and a swivel device connected to the perforating gun to permit rotation of the perforating gun within casing, and the perforating gun spaced apart from the casing by the swivel device. Ano... | 05/22/2012 |
| 8180571 | Wellbore surveying This invention relates to surveying wellbores. In particular this invention provides methods of correcting magnetic surveys for the effects introduced by magnetic mud. The method of the present invention comprises, in broad terms, measuring gravitational and magneti... | 05/15/2012 |
| 8176634 | Method of manufacturing a well screen An expanded non-bonded mesh well screen. A method of manufacturing a well screen includes the steps of: expanding at least a portion of a screen jacket; and then securing the screen jacket onto a base pipe. A well screen system includes a base pipe and an at least p... | 05/15/2012 |
| 8174265 | Antenna cutout in a downhole tubular In some embodiments, an apparatus (200) includes a tubular to operate downhole. The tubular has a longitudinal axis and has a cutout (210N) that has a direction that is other than 90 degrees to the longitudinal axis of the tubular. The apparatus also i... | 05/08/2012 |
| 8174262 | Fluid saturation estimation In some embodiments, apparatus and systems, as well as methods, may operate to acquire signature data representing a plurality of nuclear magnetic resonance (NMR) echo trains associated with a material comprising a first fluid and a second fluid, force a subset of t... | 05/08/2012 |
| 8172010 | Rotary drill bit steerable system and method A drill bit comprising: a cutting section comprising gage cutters, wherein in the cutting section is a first end of the bit, and wherein the cutting section has a full gage diameter; a heel section comprising a blade, wherein the heel section is at an end of the dri... | 05/08/2012 |
| 8171995 | Pressure relieving transition joint A method of completing a wellbore having a branch wellbore extending outwardly from a window in a parent wellbore comprises positioning a tubular string in the window, wherein the positioning comprises deflecting the tubular string from the parent wellbore into the ... | 05/08/2012 |
| 8170851 | Method and apparatus for surveying a borehole with a rotating sensor package A method and apparatus for surveying a borehole using a rotating sensor package. A sensor tool preferably including a magnetometer sensor array is disposed in the bottom hole assembly of a drillstring. Conditioning circuitry in the sensor tool processes the sensor r... | 05/01/2012 |
| 8161880 | Deflagration to detonation transition device A detonator assembly is provided. The detonator assembly comprises a deflagration to detonation transition body, a first thermally stable secondary explosive contained by the body, and a bulkhead coupled to the deflagration to detonation transition body. The bulkhea... | 04/24/2012 |
| 8157016 | Fluid metering device and method for well tool A method of actuating a well tool includes the steps of: increasing pressure in a fluid line of a fluid metering device; closing a pilot-operated valve in response to the pressure increasing step; and discharging a predetermined volume of fluid from the metering dev... | 04/17/2012 |
| 8154726 | Optical analysis system and method for real time multivariate optical computing An optical analysis system and method for determining information carried by light include a multivariate optical element disposed in the system to receive a source light from an illumination source; filtering the source light through a spectral element in the optic... | 04/10/2012 |
| 8151888 | Well tool with combined actuation of multiple valves A well tool with combined actuation of multiple valves. A well tool includes at least two valves and an actuator which actuates each of the valves, one valve being positioned longitudinally between the other valve and the actuator, and the other valve being operable... | 04/10/2012 |
| 8151874 | Thermal recovery of shallow bitumen through increased permeability inclusions Systems and methods for thermal recovery of shallow bitumen using increased permeability inclusions. A method of producing hydrocarbons from a subterranean formation includes the steps of: propagating at least one generally planar inclusion outward from a wellbore i... | 04/10/2012 |
| 8146685 | Methods and apparatus for drilling, completing and configuring U-tube boreholes A borehole network including first and second end surface locations and at least one intermediate surface location interconnected by a subterranean path, and a method for connecting a subterranean path between a first borehole including a directional section and a s... | 04/03/2012 |
| 8146662 | Well screen assembly with multi-gage wire wrapped layer A well screen assembly includes an elongate base pipe and a wire wrap layer. The wire wrap layer includes a wire wrapped around support ribs. The wire wrap layer has an axial end section wrapped at a first gage and an intermediate section wrapped at a second, larger... | 04/03/2012 |
| 8146660 | Coiled tubing deployed single phase fluid sampling apparatus and method for use of same A coiled tubing deployed fluid sampler (50) for collecting a single phase fluid sample from a well. The fluid sampler (50) is actuated to establish fluid communication between an interior (56) and an exterior of the fluid sampler (50) suc... | 04/03/2012 |
| 8145465 | Methods and systems to predict rotary drill bit walk and to design rotary drill bits and other downhole tools Methods and systems may be provided to simulate forming a wide variety of directional wellbores including wellbores with variable tilt rates, relatively constant tilt rates, wellbores with uniform generally circular cross-sections and wellbores with non-circular cro... | 03/27/2012 |
| 8145462 | Field synthesis system and method for optimizing drilling operations A system and method for optimizing the performance of a drilling device utilizes well logs and drilling parameters from multiple offset wells located in proximity to the location of a desired wellbore. The well logs and drilling parameters data from the offset wells... | 03/27/2012 |
| 8141626 | Packer-anchoring device A packer-anchoring device between an annular packer and a body, wherein the annular packer is provided, at least at one of its end portions, with an expandable end ring. ... | 03/27/2012 |
| 8136589 | Sand control screen assembly having control line capture capability A sand control screen assembly having control line capture capability is operable for use in a subterranean wellbore. The sand control screen assembly includes a base pipe having a screen jacket positioned therearound for preventing the flow of particulate material ... | 03/20/2012 |
| 8135541 | Wellbore tracking Wellbore tracking by developing a wellbore deviation survey, including collecting wellbore deformation data using a caliper at each of a plurality of depths within the wellbore, collecting wellbore deviation data using a tiltmeter at ones of the plurality of depths,... | 03/13/2012 |
| 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 |
| 8127859 | Use of swellable material in an annular seal element to prevent leakage in a subterranean well A method of sealing an annulus formed between a casing string and a surface in a well may include: positioning a seal element in the annulus with a swellable material of the seal element positioned between the casing string and the surface; and flowing cement throug... | 03/06/2012 |
| 8127834 | Modular electro-hydraulic controller for well tool An actuator control system includes a housing assembly having at least one line therein for controlling operation of an actuator, and a modular controller attached externally to the housing assembly and interconnected to the line. A method of constructing an actuato... | 03/06/2012 |
| 8125848 | Acoustic logging-while-drilling tools having a hexapole source configuration and associated logging methods Multipole acoustic logging-while-drilling (LWD) tools and associated methods are disclosed herein. In some embodiments, the disclosed acoustic LWD tool comprises a transmitter array and at least one receiver array. The transmitter array generates acoustic waves with... | 02/28/2012 |
| 8122967 | Apparatus and method for controlling the connection and disconnection speed of downhole connectors An apparatus (100) for controlling the connection speed of first and second downhole connectors (316, 146) in a subterranean well. The apparatus (100) includes a first assembly that is positionable in the well. The first assembly includes the fi... | 02/28/2012 |
| 8122953 | Drainage of heavy oil reservoir via horizontal wellbore Systems and methods for drainage of a heavy oil reservoir via a horizontal wellbore. A method of improving production of fluid from a subterranean formation includes the step of propagating a generally vertical inclusion into the formation from a generally horizonta... | 02/28/2012 |
| 8118105 | Modular electro-hydraulic controller for well tool An actuator control system includes a housing assembly having at least one line therein for controlling operation of an actuator, and a modular controller attached externally to the housing assembly and interconnected to the line. A method of constructing an actuato... | 02/21/2012 |
| 8118088 | Shear activated safety valve system A safety valve system includes a safety valve having an actuator and a line connected to the actuator. The safety valve is operable by opening the line in the well, with the line being free of any connection to a surface control system. Another safety valve system i... | 02/21/2012 |
| 8116168 | Hybrid one-way and full-way wave equation migration A migration method using hybrid one-way and full-way (HOF) wave equation propagation. The HOF method extrapolates seismic wavefields in less complex media with a one-way wave equation propagator and extrapolates seismic wavefields in extremely complex media with a f... | 02/14/2012 |
| 8113280 | Formation tester tool assembly A formation tester tool can include a longitudinal probe drill collar having a surface, a formation probe assembly located within the probe drill collar, the formation probe assembly including a piston reciprocal between a retracted position and an extended position... | 02/14/2012 |
| 8113119 | Surface safe explosive tool An explosive tool is disclosed. The explosive tool comprises a body structure, a charge, a detonator to ignite the charge via propagation of thermal energy, a pressure actuated safety to prevent propagation of sufficient thermal energy to ignite the charge when the ... | 02/14/2012 |
| 8109337 | Alignment of BOP stack to facilitate use of a rotating control device An alignment system can include at least one alignment device positioned between two flanges, the alignment device having a greater thickness on one side of the alignment device than on an opposite side of the alignment device. A method of producing a relative angul... | 02/07/2012 |
| 8107316 | Controlled source imbalance apparatus, systems, and methods In some embodiments, an apparatus and a system, as well as a method and an article, may include exciting a plurality of signal source pairs having a substantially equal and non-zero acoustic signature amplitude difference in a frequency domain to provide acoustic si... | 01/31/2012 |
| 8100188 | Setting tool for expandable liner hanger and associated methods A setting tool for an expandable liner hanger. A method includes the steps of: releasably securing the setting tool to the hanger, the setting tool including an expansion cone for displacing through the hanger; and conveying the setting tool and hanger into the well... | 01/24/2012 |
| 8096363 | Circulation control valve and associated method A circulation control valve can include first and second valve devices and at least one opening which provides fluid communication between an interior longitudinal flow passage and an exterior of the valve. Fluid communication can be provided through each of the fir... | 01/17/2012 |
