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| Number | Title | Issue Date |
| 8185315 | Determination of irreducible water cut-off using two dimensional nuclear magnetic resonance data A method for estimating a distribution of pore sizes of a fluid filled rock formation penetrated by a borehole, the method includes: processing nuclear magnetic resonance (NMR) data to determine a distribution of diffusion coefficients and a distribution of relaxati... | 05/22/2012 |
| 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 |
| 8165816 | Fluid injection management method for hydrocarbon recovery A method for controlling fluid injection parameters to improve well interactions and control hydrofracture geometries is provided. The method incorporates a systematic, transient analysis process for determining the formation effective displacement, stress and exces... | 04/24/2012 |
| 8116980 | Testing process for hydrocarbon wells at zero emissions Testing process for testing hydrocarbon wells at zero emissions in order to obtain general information on a reservoir. The process includes injecting into the reservoir a suitable liquid or gaseous fluid, compatible with the hydrocarbons of the reservoir and with th... | 02/14/2012 |
| 8099241 | Method and apparatus for real time oil based mud contamination monitoring The present invention is a method and apparatus for determining oil based mud contamination of a hydrocarbon fluid obtained from a wellbore during a formation testing. The invention includes receiving a model for simulating the contamination and receiving an empiric... | 01/17/2012 |
| 8090539 | Method for spatial filtering of electromagnetic survey data The method for suppressing noise in the controlled seismic source electromagnetic survey data based on the frequency content of the noise (51) contained in the data. The invention recognizes that some data variations across bins cannot be attributed to resist... | 01/03/2012 |
| 8050867 | Data adaptive vibratory source acquisition method Method for conducting a seismic survey (23) wherein the acquisition parameters are modified as the survey progresses using information (24) from sensors located to monitor structures and fixtures located in the survey area. The sensor output is compare... | 11/01/2011 |
| 8032303 | Methods and apparatus to determine a concentration of nitrogen in a downhole fluid Methods and apparatus to determine a concentration of nitrogen in a downhole fluid are described. An example apparatus to determine a concentration of nitrogen in a downhole fluid includes a fluid measurement unit to measure a first fluid composition and a density o... | 10/04/2011 |
| 8010292 | Method and system for detecting abnormal operation in a hydrocracker A system and method for detecting abnormal operation of a hydrocracker includes a hydrocracker model. The model may be configurable to include one or more regression models corresponding to different operating regions of the portion of the hydrocracker. The system a... | 08/30/2011 |
| 7925443 | Method for controlled source electromagnetic reconnaissance surveying Method for conducting an efficient and interpretable controlled-source electromagnetic reconnaissance survey for buried hydrocarbons. While a part of the survey area is being set up for measurement and data are being acquired, data from a nearby part of the survey a... | 04/12/2011 |
| 7917294 | Determination of irreducible water cut-off using two dimensional nuclear magnetic resonance data A method for estimating a distribution of pore sizes of a fluid filled rock formation penetrated by a borehole, the method including: processing nuclear magnetic resonance (NMR) data to determine a distribution of diffusion coefficients and a distribution of relaxat... | 03/29/2011 |
| RE42245 | System and method for real time reservoir management A method of real time field wide reservoir management comprising the steps of processing collected field wide reservoir data in accordance with one or more predetermined algorithms to obtain a resultant desired field wide production/injection forecast, generating a ... | 03/22/2011 |
| 7912649 | Geophysical surveying Joint processing of seismic and controlled source electromagnetic (CSEM) surface data is performed by using a common rock physics model which relates reservoir properties (such as porosity, lithology, saturation, and shaliness) to surface seismic AVO (or AVA) data. ... | 03/22/2011 |
| RE41999 | System and method for real time reservoir management A method of real time field wide reservoir management comprising the steps of processing collected field wide reservoir data in accordance with one or more predetermined algorithms to obtain a resultant desired field wide production/injection forecast, generating a ... | 12/14/2010 |
| 7643942 | Method for controlled source electromagnetic reconnaissance surveying Method for conducting an efficient and interpretable controlled-source electromagnetic reconnaissance survey for buried hydrocarbons. While a part of the survey area is being set up for measurement and data are being acquired, data from a nearby part of the survey a... | 01/05/2010 |
| 7532984 | Method and system for determining hydrocarbon properties Method and system are disclosed for determining hydrocarbon CDVs in a multiphase environment. The method and system involve calculating a total hydrocarbons volume from an apparent oil volume and an apparent gas volume. The apparent oil volume is determined using C/... | 05/12/2009 |
| 7529627 | Method of sea electrical survey of oil and gas deposits and apparatus complex for its realization ‘VeSoTEM’ A method for electrical survey of hydrocarbons deposits under seabed depths up to 1500 m and equipment therefor are provided. The equipment includes a vessel, a generator, an excitation field block, connected with a vertical dipole with coax electrodes, a data regis... | 05/05/2009 |
| 7526385 | Method, system and apparatus for determining rock strength using sonic logging A method is disclosed for determining a rock strength of an Earth formation, including: receiving a signal representing a measured variation of velocities or slownesses as function of radius from and azimuth around a borehole; generating predictions from a Mechanica... | 04/28/2009 |
| 7467045 | Method for assessment of uncertainty and risk A method is disclosed for assessing uncertainty comprising: creating a catalog for uncertainty areas; capturing quantitative and qualitative uncertainty data; establishing dependencies between uncertainties; associating risks to uncertainties; associating action pla... | 12/16/2008 |
| 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 |
| 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 |
| 7415401 | Method for constructing 3-D geologic models by combining multiple frequency passbands A process for constructing a three-dimensional geologic model of a subsurface earth volume wherein resolution scales of multiple diverse data types, including seismic data, are accounted for by generating multiple frequency passband models and combining them togethe... | 08/19/2008 |
| 7389185 | Methods and systems for determining reservoir properties of subterranean formations with pre-existing fractures Methods and systems are provided for evaluating subsurface earth oil and gas formations. More particularly, methods and systems are provided for determining reservoir properties such as reservoir transmissibilities and average reservoir pressures of formation layer(... | 06/17/2008 |
| 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 |
| 7383133 | Diffuse seismic imaging systems and methods Systems and methods are disclosed to construct subsurface images from diffuse seismic energy. Various disclosed system embodiments include multiple seismic sensors that each convert received seismic energy into one or more seismic signals. One or more processor comb... | 06/03/2008 |
| 7379853 | Method for enhancing production allocation in an integrated reservoir and surface flow system A method for enhancing allocation of fluid flow rates among a plurality of wellbores coupled to surface facilities is disclosed. The method includes modeling fluid flow characteristics of the wellbores and reservoirs penetrated by the wellbores. The method includes ... | 05/27/2008 |
| 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 |
| 7376514 | Method for determining properties of earth formations using dielectric permittivity measurements Techniques for estimating the fraction of water in formations being investigated use measurements of dielectric permittivity at a number of frequencies. The techniques have the advantage of minimizing or eliminating external inputs that can introduce inaccuracies. | 05/20/2008 |
| 7373251 | Method for predicting quantitative values of a rock or fluid property in a reservoir using seismic data A method is provided for predicting a value of a designated rock or fluid property in a subterranean geologic volume. A first predicted value of the designated rock or fluid property is also assigned to a volume of a multi-dimensional, multi-scale model. A first pre... | 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 |
| 7367411 | Drilling system and method A closed-loop circulating system for drilling wells has control of the flow rates in and out of the wellbore. Kicks and fluid losses are quickly controlled by adjusting the backpressure. Kick tolerance and tripping margins are eliminated by real-time determination o... | 05/06/2008 |
| 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 |
| 7363280 | Methods for multi-objective optimization using evolutionary algorithms In the field of multi-objective optimization using evolutionary algorithms conventionally different objectives are aggregated and combined into one objective function using a fixed weight when more than one objective needs to be optimized. With such a weighted aggre... | 04/22/2008 |
| 7363206 | Compositional modeling and pyrolysis data analysis methods Methods for processing pyrolytic characterizing data (pcd) from reservoir rock samples obtained from known geographical locations under circumstances that are encountered during the drilling of wells provide information that is important for assessing the relative a... | 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 |
| 7363164 | Method of evaluating fluid saturation characteristics in a geological formation Various methods are disclosed for evaluating water saturation characteristics in a geological formation penetrated by a borehole, including injection fluid introduced into the formation by an external injection process performed upon the formation. In various embodi... | 04/22/2008 |
| 7363160 | Technique for determining properties of earth formations using dielectric permittivity measurements Techniques for determining formation characteristics use measurements of dielectric permittivity at a number of frequencies. Determined characteristics include the vertical and horizontal formation dielectric constant and conductivity, the formation water conductivi... | 04/22/2008 |
| 7360612 | Roller cone drill bits with optimized bearing structures A roller cone drill bit may include optimally designed bearing structures and cutting structures. The roller cone drill bit may include three cone assemblies rotatably mounted on respective spindles via respective bearing structures. Each cone assembly may have a re... | 04/22/2008 |
| 7357021 | Methods of monitoring downhole conditions Methods of monitoring various downhole conditions are described, including a system for determining and/or identifying the flow of fluid in a well, determining sand production in a well, identifying localized events in a well, determining the apparent flow velocity ... | 04/15/2008 |
| 7359841 | Method and system for the efficient calculation of unsteady processes on arbitrary space-time domains The Space-Time Mapping Analysis (STMA) method and system provides an engineering method and/or system for modeling and/or analyzing and/or designing and/or building and/or operating complex physical processes, components, devices, and phenomena. STMA can be used in ... | 04/15/2008 |
