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| Number | Title | Issue Date |
| 8185314 | Method and system for determining dynamic permeability of gas hydrate saturated formations A method and system for determining dynamic permeability of gas hydrate formations including deploying a tool within a wellhole configured for magnetic resonance measurements, determining permeability of a formation at or near zero saturation of the gas hydrate and ... | 05/22/2012 |
| 8185311 | Multiuser oilfield domain analysis and data management A method of oilfield data management including collecting oilfield data from an oilfield, executing instructions on a processor to perform a domain analysis of the oilfield data by a first analysis team to generate a first analysis, the first analysis team comprisin... | 05/22/2012 |
| 8184014 | Driver to transmit signals over a transmission line in a well An apparatus includes a transmission line for deployment in a well, and a driver to transmit signals over the transmission line. The driver includes a field-effect transistor, and an operational amplifier to control the field-effect transistor, where the operational... | 05/22/2012 |
| 8183183 | Method of treating a wellbore at high temperature in contact with carbon dioxide A method for treating a subterranean formation is made of steps of providing a composition comprising a carrier fluid, a polymer viscosifying agent, carbon dioxide and a formate salt or formic acid; injecting into a wellbore, the composition; contacting the composit... | 05/22/2012 |
| 8183179 | System, method, and apparatus for acid fracturing with scale inhibitor protection A method for treating a subterranean formation includes forming a treatment fluid including a carrier fluid, a solid acid-precursor, and a solid scale inhibitor. The solid acid-precursor includes a material that forms an acid at downhole conditions in the subterrane... | 05/22/2012 |
| 8181702 | Application of degradable fibers in invert emulsion fluids for fluid loss control A method of treating a subterranean formation including emplacing in a wellbore a fluid, comprising an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one degradable material, and at least one bridging material, and contact... | 05/22/2012 |
| 8181535 | Flow measuring apparatus using tube waves and corresponding method Methods of measuring flow properties and flowmeters having an upstream transceiver and a downstream wave transceiver, each positioned with a wave emitting surface exposed to a fluid flowing in a conduit are described, the transceiver being separated by a length L al... | 05/22/2012 |
| 8181510 | System and method for correcting errors in depth for measurements made while drilling A method and system is disclosed for automatically correcting for depth errors in measurements taken from a drillstring during the drilling phase of the construction of a hydrocarbon wellbore. The correction is based on a stress profile which in turn is based on the... | 05/22/2012 |
| 8181057 | Time synchronization in units at different locations To synchronize units of a formation evaluation/drilling operation evaluation system, a time delay associated with a communications link between a master unit and a slave unit of the formation evaluation/drilling operation evaluation system is determined. The master ... | 05/15/2012 |
| 8180614 | Modeling vibration effects introduced by mud motor Torsional, axial and lateral vibrations introduced when a mud motor is used with a drilling tool to drill a borehole are calculated using a model. The model includes different computational modules for each of three distinct motor sections: power, transmission and b... | 05/15/2012 |
| 8180578 | Multi-component multi-phase fluid analysis using flash method A method of analyzing phase transitions of fluid in an oilfield operation of an oilfield. The method includes determining phase boundaries of a multi-component multi-phase system based on geophysical parameters associated with the oilfield, predicting an amount of a... | 05/15/2012 |
| 8179278 | Downhole communication devices and methods of use A downhole communication device comprises a first energy harvesting device; a downhole transceiver in communication with the first energy harvesting device; an accumulator in communication with the energy harvesting device; and a microcontroller. The microcontroller... | 05/15/2012 |
| 8177958 | Electro-chemical sensor An electro-chemical sensor is described having one or more redox species sensitive to a certain analyte and one or more redox species that are insensitive to that analyte, for the purpose of making measurements in a downhole environment in aquifers or oilfield reser... | 05/15/2012 |
| 8177526 | Gas well dewatering system Power and control logic configurations for gas well dewatering systems are provided. In one example, a reservoir is configured to contain hydraulic, lubricating fluid. An electric motor is configured to receive fluid from the reservoir for lubrication and a hydrauli... | 05/15/2012 |
| 8177424 | Fiber optic sensor for use on sub-sea pipelines A fiber optic sensor assembly for use on a sub-sea pipeline. The fiber optic sensor assembly is coupled to remotely located equipment by fiber optic cable(s) which extend outside of the pipeline. The fiber optic sensor assembly is affixed to a mounting point on the ... | 05/15/2012 |
| 8176984 | Systems and methods for downhole sequestration of carbon dioxide Carbon dioxide is sequestered in a formation using dual or multiple completion and injection methods that reduce or eliminates upward leak rates of the sequestered carbon dioxide. The dual or multiple completion and injection method involves the injection of a benig... | 05/15/2012 |
| 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 |
| 8175807 | Estimating horizontal stress from three-dimensional anisotropy A method for determining properties of a subterranean formation. The method includes determining at least one characterization parameter based on wave velocity measurement data, determining a plurality of elastic coefficients based on the at least one characterizati... | 05/08/2012 |
| 8174929 | Spindle for mud pulse telemetry applications The present disclosure describes a spindle for a mud pulse telemetry tool. The spindle includes a seal section having an outer surface for contacting a lip seal of a spindle housing in which the spindle is mounted; a top section attachable to at least part of a valv... | 05/08/2012 |
| 8174403 | Methods and apparatus for telemetry and power delivery Remote sensing systems are provided including a recorder, a cable network and a plurality of downhole sensor nodes. The cable network comprises a first cable and a second cable. The first and second cables form a loop. The recorder and the plurality of downhole sens... | 05/08/2012 |
| 8173955 | Methods and apparatus to optically determine velocities of downhole fluids Methods and apparatus to optically determine velocities of downhole fluids are disclosed. Some example methods to determine a velocity of a downhole fluid include exciting a fluorescent substance in a downhole fluid with an optical signal via an optical interface. T... | 05/08/2012 |
| 8173953 | Gain stabilization of gamma-ray scintillation detector Systems and methods for stabilizing the gain of a gamma-ray spectroscopy system are provided. In accordance with one embodiment, a method of stabilizing the gain of a gamma-ray spectroscopy system may include generating light corresponding to gamma-rays detected fro... | 05/08/2012 |
| 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 |
| 8167043 | Degradable material assisted diversion or isolation A method for well treatment by forming a temporary plug in a fracture, a perforation, a wellbore, or more than one of these locations, in a well penetrating a subterranean formation is provided, in which the method of well treatment includes: injecting a slurry comp... | 05/01/2012 |
| 8166882 | Shaped charge liner with varying thickness A shaped charge has a case defining a volume therein. A liner is located in the volume. An explosive is located between the case and the liner. The liner defines an interior volume and an opening thereto. The liner also has an apex portion that is distal from the op... | 05/01/2012 |
| 8166812 | Vibrating wire viscometers Vibrating wire viscometers are disclosed. An example apparatus to determine the viscosity of a downhole fluid is described, the apparatus including a wire to be immersed in a downhole fluid, to vibrate when an alternating current is applied to the wire within a magn... | 05/01/2012 |
| 8165986 | Method and system for real time production management and reservoir characterization The present invention is a system and method for generating predictions for various parameters in a reservoir. The invention includes receiving input data characterizing the reservoir and determining transient areas. The transient areas are determined by receiving d... | 04/24/2012 |
| 8165825 | Method for electromagnetically measuring physical parameters of a pipe The invention discloses a method for electromagnetically measuring physical parameters of a pipe that includes measuring a pipe inner diameter ID and a pipe ratio of magnetic permeability to electrical conductivity μ2/σ2 by means of a measuring arrangement 1 | 04/24/2012 |
| 8165817 | Method for integrating reservoir charge modeling and downhole fluid analysis A method for estimating properties of fluids in rock formations at selected locations within a geologic basin includes generating an initial model of the basin. The model includes as output spatial distribution of a rock formation mineral composition, rock formation... | 04/24/2012 |
| 8163826 | Polymeric acid precursor compositions and methods A composition is formed from a polymeric acid precursor, such as polylactic acid (PLA), that is a least partially dissolved within a polymer dispersing solvent. An emulsion may be from polymeric acid precursor that is at least partially dissolved within a solvent an... | 04/24/2012 |
| 8162076 | System and method for reducing the borehole gap for downhole formation testing sensors A system and method for downhole measurement for use with drill strings to reduce the borehole gap with respect to sensors carried by the drill string. In one embodiment, the sensors are mounted on a surface of the directional drilling hinged pad that comes in conta... | 04/24/2012 |
| 8162056 | Application of degradable fibers in invert emulsion fluids for kill pills A method of treating a subterranean formation includes pumping into a cased, perforated wellbore that intersects the formation an invert emulsion kill fluid, the invert emulsion kill fluid comprising: an oleaginous continuous phase; a non-oleaginous discontinuous ph... | 04/24/2012 |
| 8162052 | Formation tester with low flowline volume and method of use thereof A downhole tool for use in a well may comprise a vessel having a piston or a valve disposed therein and defining first and second volumes wherein the first volume is configured to receive formation fluid from an inlet port, and an actuator configured to extract form... | 04/24/2012 |
| 8158563 | Sealant composition A sealant composition, comprising an alkali metal silicate and a calcium containing inorganic compound, wherein the particles of the calcium containing compound have a mean particle size that is submicron, is useful for sealing cracks, fissures and voids in subterra... | 04/17/2012 |
| 8157024 | Ball piston steering devices and methods of use Embodiments include ball piston steering devices and methods for use of ball piston devices. In one aspect a ball piston steering device includes a sleeve in fluid communication with a fluid source and a ball received within the sleeve. The ball is movable within th... | 04/17/2012 |
| 8157022 | Apparatus string for use in a wellbore An apparatus string for use in a wellbore has a plurality of activation modules having first and second ends and containing devices to be activated/initiated downhole. An apparatus string also has a plurality of initiator modules where at least initiator is operativ... | 04/17/2012 |
| 8157011 | System and method for performing a fracture operation on a subterranean formation A system and method for performing a fracture operation on a well site having a subterranean formation with a reservoir therein. The method involves measuring at least one seismic wave before and after stimulating the subterranean formation, comparing the seismic wa... | 04/17/2012 |
| 8156871 | Liner for shaped charges A liner for a shaped charge is disclosed which comprises a plurality of portions, where at least one portion is composed of powder materials. In one embodiment, the liner comprises two portions that are composed of different powder materials, while alternative embod... | 04/17/2012 |
| 8156801 | Flow metering device A fluid flow metering device comprises a ball valve locatable in a fluid flow, having at least two transverse bores through the ball valve, a first transverse bore and a second transverse bore. The first transverse bore includes a fluid flow metering apparatus for m... | 04/17/2012 |
| 8156800 | Methods and apparatus to evaluate subterranean formations Methods and apparatus to evaluate subterranean formations are described. An example method of evaluating a subterranean formation includes, obtaining a first sample from a first wellbore location. Additionally, the example method includes obtaining a second sample f... | 04/17/2012 |
