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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 |
| 8170801 | Determining fluid rate and phase information for a hydrocarbon well using predictive models Physical models of wells are used to determine rate and phase composition for fluid produced from or injected into the wells on a near real time and continuous basis. The method can be used to alert operators or others of conditions in a well or field to permit more... | 05/01/2012 |
| 8131470 | Managing flow testing and the results thereof for hydrocarbon wells Automated monitoring and management of well tests of hydrocarbon wells in a production field. Routing of the output of a well to a flow meter, separated from the output from other wells in the field, is detected by a computer system such as a server. Measurement dat... | 03/06/2012 |
| 8078405 | Method of estimating the permeability of a fracture network from a connectivity analysis A method for optimizing the development of a fractured hydrocarbon reservoir wherein the network permeability is determined using a reliable compromise between numerical and analytical methods which has application to oil reservoir development. The reservoir is disc... | 12/13/2011 |
| 8078404 | Tracing injected fluids Method for recognizing one or more properties of a geological formation by the injection of a fluid into at least one borehole within the formation. The injection fluid either has a different resistivity to the formation and/or formation fluids or has the capacity t... | 12/13/2011 |
| 8060311 | Job monitoring methods and apparatus for logging-while-drilling equipment Job monitoring methods and apparatus for logging-while-drilling equipment are disclosed. A disclosed example method includes obtaining a fluid associated with an underground geological formation, analyzing the fluid with one or more sensors to form respective ones o... | 11/15/2011 |
| 8041510 | Continuous reservoir monitoring for fluid pathways using microseismic data A system and method monitor a hydrocarbon reservoir for drainage in volumetric three dimensions. Monitoring between wells is imperative for optimum reservoir management and is achieved by mapping the hydrocarbon fluid pathways in a producing reservoir. Unlike conven... | 10/18/2011 |
| 7937223 | Downhole fluid analysis A method that uses downhole fluid analysis in order to selectively collect and retain formation fluid samples in a drilling environment, as well as, control drilling using downhole fluid analysis. ... | 05/03/2011 |
| 7904248 | Method for geologic modeling through hydrodynamics-based gridding (hydro-grids) A method of hydrodynamics-based gridding (Hydro-Grids) for creating geologic models of subsurface volumes, such as reservoirs, is disclosed. Geologic data is obtained. Vertical grid surfaces are created. Lateral grid surfaces are created to correspond to surfaces of... | 03/08/2011 |
| 7890264 | Waterflooding analysis in a subterranean formation A method of analyzing a subterranean formation. The method includes specifying a volume of interest in the subterranean formation, specifying an injector wellsite that penetrates the volume of interest, specifying a first producer wellsite and a second producer well... | 02/15/2011 |
| 7844401 | System and method for determining producibility of a formation using flexural mechanical resonator measurements The present disclosure presents illustrative embodiments of a method for estimating the producibility of a hydrocarbon bearing formation using a flexural mechanical resonator to measure the viscosity and density of a representative fluid from the formation. A system... | 11/30/2010 |
| 7788037 | Method and system for determining formation properties based on fracture treatment A method and system for determining formation properties based on a fracture treatment that may include collecting data from a fracture treatment for a well. A flow regime of the fracture treatment is determined based on the data. Formation properties may be determi... | 08/31/2010 |
| 7778780 | Well characterisation method One aspect of the invention relates to a method (10) for characterizing a well (700) using distributed temperature sensor (DTS) data to optimise a well model (12). The method comprises providing a well model of flow and thermal properties (12... | 08/17/2010 |
| 7742875 | Method for geologic modeling through hydrodynamics-based gridding (Hydro-Grids) The present invention is a method of hydrodynamics-based gridding (Hydro-Grids) for creating geologic models of subsurface volumes, such as reservoirs. Vertical grid surfaces may be chosen in an unstructured fashion to provide lateral resolution where needed. Latera... | 06/22/2010 |
| 7711489 | Trident probe groundwater exchange system A Trident Probe Groundwater Exchange System (NC#096456). The apparatus includes a groundwater conductivity sensor, designed to determine a groundwater conductivity surface; a water conductivity sensor, designed to determine a surface water conductivity groundwater; ... | 05/04/2010 |
| 7653489 | Method of measuring gas flow A method of measuring a dry gas flow from hydrocarbon wells. The hydrocarbon wells produce a stream which contains liquids and natural gas. The method comprises providing an differential flow measurement device (orifice) located at a well site containing the hydroca... | 01/26/2010 |
| 7617052 | Ultrasonic estimating method and apparatus for a cased well An ultrasonic estimating method and apparatus are presented for estimating a mud velocity in a casing including a transducer and adapted to be positioned inside the casing and displaced through the casing at a plurality of azimuth and a plurality of depths. ... | 11/10/2009 |
| 7580797 | Subsurface layer and reservoir parameter measurements Method and system for determining a characteristic of a subsurface formation traversed by a wellbore. A fluid flow rate in the wellbore is established, the flow being associated with fluid movement in one or more layers in the formation. Fluid data is generated from... | 08/25/2009 |
| 7565246 | Determination of gas saturation radial profile from multi-frequency NMR data A method for determining fluid saturation in a formation at a plurality of radial depths near a wellbore, the method including: obtaining multi-frequency nuclear magnetic resonance (NMR) response data for the formation; and processing the data to determine simultane... | 07/21/2009 |
| 7487047 | Method of interpreting well data The present invention provides method for detecting the possible presence of surfaces layers of diagenetic origin by establishing divergence between well signatures such as logs, particularly for use in predominantly carbonate reservoirs. ... | 02/03/2009 |
| 7437247 | Method of determining paraffinic crude flow restart conditions The invention relates to a method of estimating the flow restart conditions of a paraffinic hydrocarbon in a pipe, wherein the following stages are carried out: selecting a theological model, determining the temperature and shear stress fie... | 10/14/2008 |
| 7430500 | Method and device for numerical analysis of flow field of incompressible viscous fluid, directly using V-CAD data A method including: a dividing step (A) of dividing external data into a plurality of cells (13) having boundaries orthogonal to each other, the external data including boundary data of an object which contacts incompressible viscous fluid; a cell classifying... | 09/30/2008 |
| 7424367 | Method for predicting lithology and porosity from seismic reflection data Method for predicting lithology and porosity of subsurface rocks from seismic reflection data. The seismic data is inverted to yield elastic properties of the rocks such as the compressional and shear impedances. A rock physics model is built to relate porosity, the... | 09/09/2008 |
| 7424366 | Time-of-flight stochastic correlation measurements The present invention recited a method and apparatus for measuring a parameter of a fluid within a fluid channel using a tracer element injection by an injection element and detected by a detection element at a location separate from the injection element location. ... | 09/09/2008 |
| 7418370 | Method, apparatus and computer program providing broadband preconditioning based on reduced coupling for numerical solvers This invention relates to computing numerical solutions of linear systems of equations, specifically to implementing preconditioning of the coefficient matrix of such a system. The preconditioning applies to any coefficient matrix, dense or sparse, based on the solu... | 08/26/2008 |
| 7397240 | Method of measuring rock wettability by means of nuclear magnetic resonance A method for measuring the wettability of rocks by low-field nuclear magnetic resonance is described which has application for hydrocarbon reservoir engineering or development, or in civil engineering. The method essentially determines the water wet pore surface and... | 07/08/2008 |
| 7392136 | Use of the stationary state of energy-exchanging cellular automata for modelling sedimentary architectures The invention allows construction of the architecture of sedimentary layers deposited on a topographic surface as a result of the passage of sedimentary currents, using cellular automata. The topographic surface is discretized into a set of cellular automata. Then, ... | 06/24/2008 |
| 7386431 | Method system and program storage device for simulating interfacial slip in a hydraulic fracturing simulator software A method, practiced by a Hydraulic Fracturing Simulator software, is adapted for simulating a hydraulic fracture in an Earth formation, the formation including a plurality of layers, a slip zone, which represents a debonding between adjacent layers of the Earth form... | 06/10/2008 |
| 7379854 | Method of conditioning a random field to have directionally varying anisotropic continuity The present invention is a method of generating a model of a random field which has directionally varying continuity. First, a tentative model for the random field is specified. Second, connected strings of nodes within the model are identified. Third, a spectral si... | 05/27/2008 |
| 7373285 | Application of phase behavior models in production allocation systems The present invention is directed to a method for allocating revenue or taxes to individual fluid streams commingled during an oil and gas production process, the method includes commingling fluid streams to produce a commingled fluid stream; (2) utilizing a process... | 05/13/2008 |
| 7373288 | Method for modelling compositional and/or multiphase transfers between the porous matrix and the fractures of a multilayer porous medium A method for simulating compositional and/or multiphase transfers between the porous matrix and the fractures of a fractured multilayer porous medium, which are respectively saturated by a distinct liquid phase and gas phase. The method comprises constructing a geol... | 05/13/2008 |
| 7369973 | Method and system for representing reservoir systems The disclosure is directed to a computer-implemented method of representing fluid flow in a physical fluid reservoir. The method includes generating a mesh representation of the physical fluid reservoir having a plurality of mesh elements. Each of the plurality of m... | 05/06/2008 |
| 7369979 | Method for characterizing and forecasting performance of wells in multilayer reservoirs having commingled production A method for forecasting performance for and characterizing the properties of a multilayer low permeability gas reservoir. The method includes a coupled well/reservoir predictive model that accounts for pressure drop between layers, allowing accurate, rigorous, and ... | 05/06/2008 |
| 7363158 | Method for creating a stratigraphic model using pseudocores created from borehole images A method for creating a stratigraphic model is provided. A core is obtained from a wellbore and a detailed graphic core description is created. Wireline data, including a borehole image, is obtained for a cored interval corresponding to the core and processed into a... | 04/22/2008 |
| 7363162 | Gas reservoir evaluation and assessment tool method and apparatus and program storage device A Gas Reservoir Evaluation and Assessment Tool utilizes an Analytical Engine to produce predictions of pressure values and other production data at any point in space and at any point in time in a reservoir. A computer system, such as a workstation, stores a Gas Res... | 04/22/2008 |
| 7363161 | Pore-scale geometric models for interpretation of downhole formation evaluation data The grain size of a pore-scale geometric model of a clastic earth formation are adjusted so that the NMR relaxation time distribution output of the model matches a measured NMR distribution. Fluid drainage and imbibing can be simulated. Additional properties of the ... | 04/22/2008 |
| 7361887 | Measurement of formation gas pressure in cased wellbores using pulsed neutron instrumentation A pulsed neutron tool with three or more detectors is used for making measurements inside casing. The measurements may be used to determine gas saturation at a constant gas pressure, pressure at constant gas saturation, or to determine both gas saturation and gas pr... | 04/22/2008 |
| 7363163 | Method for updating a geological reservoir model by means of dynamic data A method for updating a geological reservoir model by integration of dynamic data having application, for example, to petroleum reservoir development. An initial map (y) of petrophysical properties is constructed by means of a geostatistical simulator and of static ... | 04/22/2008 |
| 7357196 | Method and system for predicting performance of a drilling system for a given formation A method and apparatus for predicting the performance of a drilling system for the drilling of a well bore in a given formation includes generating a geology characteristic of the formation per unit depth according to a prescribed geology model, obtaining specificat... | 04/15/2008 |
| 7356413 | Pore-scale geometric models for interpretation of downhole formation evaluation data Parameters of a pore-scale geometric model of a clastic earth formation are adjusted so that the output of the model matches measurements made on a core sample. Additional properties of the earth formation are predicted using the pore-scale model. The additional pro... | 04/08/2008 |
