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| Number | Title | Issue Date |
| 8096349 | Apparatus for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids The extraction of hydrocarbon fuel products such as kerogen oil and gas from a body of fixed fossil fuels such as oil shale is accomplished by applying a combination of electrical energy and critical fluids with reactants and/or catalysts down a borehole to initiate... | 01/17/2012 |
| 8063356 | Method of extracting formation density and Pe using a pulsed accelerator based litho-density tool A more precise determination of bulk formation density is attainable using a pulsed γ-γ density tool and simultaneously compensating for interactions due to photoelectric effect and density variations caused by standoff. A source directs energetic particles at a f... | 11/22/2011 |
| 8058071 | Downhole spectroscopic hydrogen sulfide detection Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide f... | 11/15/2011 |
| 8057752 | Fluid analyzer for determining fluid chemistry of formation fluid by downhole reagent injection spectral analysis A method for analyzing formation fluid in earth formation surrounding a borehole includes storing analytical reagent in a reagent container in a fluids analyzer in a formation tester and moving the formation tester, including the reagent, downhole. Reagent from the ... | 11/15/2011 |
| 8055026 | Image feature extraction A method of extracting desired features from a cellular image including the steps of: (a) selecting an initial cell within the image; (b) selecting an additional cell, near the initial cell, appearing to be associated with a desired feature; (c) repeating step (b) f... | 11/08/2011 |
| 8035321 | Injector for betatron An electron acceleration portion of a Betatron having a vacuum chamber with an interior wall spaced from an exterior wall with a main electron orbit located approximate to the exterior wall and the interior wall. An electron injector has an anode structured and arra... | 10/11/2011 |
| 8028563 | Pressure interference testing for estimating hydraulic isolation A cased hole pressure test tool is used to determine the integrity of cement between two points in a borehole in terms of permeability or transmissibility. The test tool drills at least one probe hole through the casing up to the cement. In one embodiment, two probe... | 10/04/2011 |
| 8028562 | High pressure and high temperature chromatography Methods and related systems are described for high pressure chromatographic analysis. The described system includes a flowpath adapted to flow a mobile phase and the sample at high pressures, an injector adapted to inject the fluid sample into a flowpath, a separati... | 10/04/2011 |
| 8027794 | System and method for measuring properties of liquid in multiphase mixtures This disclosure describes measuring properties of a multiphase mixture flowing in a pipe using probes with different sensitivity depths. By generating annular flow of the multiphase mixture in the pipe, the probes may be contacted with the liquid phase of the mixtur... | 09/27/2011 |
| 8013295 | Ion mobility measurements for formation fluid characterization Methods and related apparatuses for chemically analyzing at least one sample of fluid, such that a gas flow of at least one fluid sample is directed into a mixing region of an ion mobility device, wherein the mixing region is in communication with at least one conta... | 09/06/2011 |
| 8009510 | Two way check shot and reverse VSP while drilling Methods and related systems are described making seismic measurements. Seismic energy is transmitted into the earth using a surface seismic source. The seismic energy is received with one or more downhole receivers located in a borehole. In response to the received ... | 08/30/2011 |
| 8009509 | Automated mud slowness estimation An integrated framework is described for automating some or all of mud slowness estimation for both fast and slow formations. An estimation of fluid slowness based on monopole radial profiling is calculated if conditions permit. Alternatively, an estimation of fluid... | 08/30/2011 |
| 8009059 | Downhole power generation and communications apparatus and method Apparatuses and methods to power and communicate with downhole sensors are presented. Preferred embodiments of the present invention includes energizing a downhole sensor with a surface pressure wave generator and a downhole mechanical to electrical energy converter... | 08/30/2011 |
| 8005658 | Automated field development planning of well and drainage locations A hybrid evolutionary algorithm (“HEA”) technique is described for automatically calculating well and drainage locations in a field. The technique includes planning a set of wells on a static reservoir model using an automated well planner tool that designs real... | 08/23/2011 |
| 8005619 | Method of determining reservoir parameters A method of determining the effect of formation porosity on formation resistivity and parameters derived from the formation resistivity is described, including the step of determining for a depth interval a heterogeneity measure; and using a pre-defined relation to ... | 08/23/2011 |
| 8002121 | In-line flow separation of fluids in a pipe separator An in-line flow separator (1) comprises an uphill section (2) of pipeline which, in use, carries a gravitationally stratified flow of a first liquid (3) and a second denser liquid (4). The second liquid (4) forms a sump (5) ... | 08/23/2011 |
| 7994932 | Borehole telemetry system An acoustic telemetry apparatus and method for communicating encoded digital data from a down-hole location through a borehole to the surface is described including an acoustic channel terminated at a down-hole end by a reflecting terminal (133, 134), an acou... | 08/09/2011 |
| 7994739 | Internal injection betatron A betatron magnet having at least one electron injector positioned approximate an inside of a radius of a betatron orbit, the betatron magnet further includes a first guide magnet having a first pole face and a second guide magnet having a second pole face. Both the... | 08/09/2011 |
| 7993604 | Spectroscopic pH measurement using optimized mixtures of reagents to extend measurement range An indicator mixture that allows pH measurement over a broader range of pH or to a higher accuracy than available using conventional spectroscopic techniques. In particular, the mixture of the present invention is comprised of two or more reagents such that when com... | 08/09/2011 |
| 7990282 | Borehole telemetry system An acoustic telemetry apparatus and methods for communicating digital data from a down-hole location through a borehole to the surface or between locations within the borehole are described including a receiver and a transmitter linked by an acoustic channel (210... | 08/02/2011 |
| 7987912 | Reversible polymeric gelation for oilfield applications A subterranean location accessed via a wellbore is treated with an oilfield fluid containing a viscosifying agent which is a polymer and a cross-linking agent which can undergo the Diels-Alder reaction to form a gel. Conditions at the subterranean location alter flu... | 08/02/2011 |
| 7987733 | Determination of density for metering a fluid flow Systems and methods are disclosed for measuring densities and flow rates of gas-liquid fluid mixtures. In the systems and methods, the fluid mixture is caused to exhibit swirling flow as it flows through a conduit that includes a constriction, a first pressure diffe... | 08/02/2011 |
| 7984771 | Methods and apparatus for attenuating drillstring vibrations Apparatus and methods are described for highly attenuating vibrations of a drillstring assembly while drilling. In one embodiment, vibrations are attenuated by introducing one or more vibration attenuation modules at appropriate assembly locations. For example, vibr... | 07/26/2011 |
| 7971661 | Motor bit system The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The chassis may be configured to be operably coupled with a first rotational motion source. The head may include a first plurality of cutters coupled with an end of the head, an... | 07/05/2011 |
| 7968184 | Erosion resistant surface and method of making erosion resistant surfaces An erosion resistant surface using a dense array of elastic whiskers to slow the velocity of erosive particles before impacting with the surface. A carbon nanotube forest is grown on the surface to provide the erosion resistance. In the alternative, a carbon nanotub... | 06/28/2011 |
| 7963347 | Systems and methods for reducing backward whirling while drilling According to the invention, a system for drilling a cavity in a medium is disclosed. The system may include a bottom hole assembly. The bottom hole assembly may include a first longitudinal segment and at least one drill bit. The first longitudinal segment may inclu... | 06/21/2011 |
| 7959864 | Downhole spectroscopic hydrogen sulfide detection Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide f... | 06/14/2011 |
| 7950590 | Temperature triggered actuator An actuator is disclosed which operates on the principle of the variable magnetic properties of materials with respect to temperature. As temperature is raised past Curie temperature, magnetic permeability of certain materials drops significantly to a value close to... | 05/31/2011 |
| 7946341 | Systems and methods for distributed interferometric acoustic monitoring Acoustic monitoring of a conduit, a wellbore or a reservoir associated with hydrocarbon production or transportation and/or carbon dioxide sequestration is carried out using a fibre optic cable extending along or appurtenant to it as a distributed interferometer. Co... | 05/24/2011 |
| 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 |
| 7942065 | Isokinetic sampling method and system for multiphase flow from subterranean wells The invention relates in a one aspect to a method or apparatus for measuring flow properties of a multiphase fluid stream flowing in a pipeline comprising means for sampling, with a sampling probe, a portion of the fluid stream; for measuring a differential pressure... | 05/17/2011 |
| 7939953 | Micro scale fischer-tropsch and oxygenate synthesis process startup unit A mobile system for providing start-up electrical power to a micro scale liquid hydrocarbon and/or oxygenate synthesis plant is provided including a portable gas or liquid fueled electrical generator, a steam turbine, a plant generator mechanically coupled to the st... | 05/10/2011 |
| 7937222 | Method of determining saturations in a reservoir A method of determining water saturations from a deep-reading resistivity measurement in a reservoir is provided including the step of estimating, through for example a reservoir simulation process, a spatial distribution of a parameter related to the water conducti... | 05/03/2011 |
| 7931091 | Open-hole wellbore lining Embodiments of the present invention provide systems and methods for lining a wellbore. In certain aspects, the systems and methods comprise providing a fluid composition that is solidifiable or gellable on exposure to actinic radiation of a predetermined wavelength... | 04/26/2011 |
| 7928672 | Modulator for circular induction accelerator Described herein is a modulator circuit for generating discrete energy pulses in a device. The circuit includes a high voltage power source intermittently coupled to a saturable first inductor, a second inductor and a capacitor coupled in parallel between the high v... | 04/19/2011 |
| 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 |
| 7926438 | Subsea operations support system An underwater operations support system facilitates underwater exploration, monitoring, maintenance and construction operations associated with development of natural resources. The operations support system may include energy generation subsystems, energy accumulat... | 04/19/2011 |
| 7916838 | Betatron bi-directional electron injector A Betatron having a toroidal passageway disposed in a cyclical magnetic field with a main electron orbit circumnavigating the toroidal passageway. Within the toroidal passageway is a first electrode that is spaced apart from a second electrode. The combination of th... | 03/29/2011 |
| 7913806 | Enclosures for containing transducers and electronics on a downhole tool A measurement package for disposal on an apparatus such as a downhole tool or a tool like device. The measurement package including an enclosure, a first acoustic transducer housed within the enclosure, a second acoustic transducer housed within the enclosure and el... | 03/29/2011 |
| 7909099 | Well productivity enhancement methods The invention relates to oil production stimulation methods and can be used for both reservoirs with fractures resulting from the fracturing procedure and reservoirs with naturally occurring fractures, for which the fracturing procedure is not mandatory. A material ... | 03/22/2011 |
