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| Number | Title | Issue Date |
| 8185313 | Classifying potential hydrocarbon reservoirs using electromagnetic survey information A probabilistic method for classifying observed CSEM response for a resistive anomaly to classify the response into multiple geologic categories indicative of hydrocarbon production potential. Each category is assigned a prior probability (301). For each cate... | 05/22/2012 |
| 8169222 | Method for electroseismic survey design A method for designing a controlled-source electromagnetic survey that will discriminate between a defined deep marginal-interest reservoir (2) and specified false positive resistivity structures of concern (3, 4, 5). A reservoir model and a false posi... | 05/01/2012 |
| 8165815 | Method for electromagnetic air-wave suppression by active cancellation and shielding Method for reducing air wave and/or magnetotelluric noise in controlled source electromagnetic surveying by either shielding the source (61) from the air interface, shielding the receivers from downward traveling electromagnetic energy, or by employing a seco... | 04/24/2012 |
| 8126651 | Method for obtaining porosity and shale volume from seismic data Method for obtaining rock parameters such as porosity and vshale directly from inversion of seismic data corresponding to a single trace location. This method is distinguished from existing methods that obtain elastic properties from inversion of seismic data, then ... | 02/28/2012 |
| 8126650 | Method for determining physical properties of structures Method for efficient inversion of controlled-source electromagnetic survey data to obtain a resistivity model of the subsurface of the survey area. The method extracts the dimensions and location of sub-surface structures as they may be revealed by existing seismic ... | 02/28/2012 |
| 8126648 | Method for predicting the best and worst in a set of non-unique solutions Method for determining best and worst cases for values of model parameters such as porosity and shale volume fraction generated by non-unique matrix inversion of physical data such as seismic reflection amplitudes. The matrix is diagonalized, and then orthonormal ba... | 02/28/2012 |
| 8121791 | Spectral shaping inversion and migration of seismic data A geophysical model of a subsurface region is generated based on seismic data, e.g., seismic reflection data. Migration and seismic inversion are applied to the seismic data to generate estimates of one or more physical or seismic properties of the subsurface region... | 02/21/2012 |
| 8078439 | Method of imaging subsurface formations using a virtual source array This invention relates generally to a method of simulating the signal of an electromagnetic source using one or more dipole sources. In the method a dipole source is located at an excitation location corresponding to a segment of the electromagnetic source to be sim... | 12/13/2011 |
| 7933741 | Estimating noise at one frequency by sampling noise at other frequencies A method, apparatus and computer program for improving the signal-to-noise ratio of a signal S(t), S(t) containing Signal and noise, are disclosed. A measurement of S(t) at a frequency-of-interest is obtained. Noise measurements of S(t) at one or more noise frequenc... | 04/26/2011 |
| 7925481 | Geologic models of subsurface sedimentary volumes A method is disclosed for using a three-dimensional seismic image of a subsurface earth volume to construct a geologic model specifying the spatially-varying grain size distribution, porosity, and permeability throughout the volume. The method applies to earth volum... | 04/12/2011 |
| 7894299 | Converted mode seismic survey design Method for designing a converted mode (PS or SP) seismic survey to accomplish specified vertical and lateral resolution objectives at target depth. An equation (181) is provided for determining the minimum bandwidth required for a desired vertical resolution ... | 02/22/2011 |
| 7808420 | Electromagnetic imaging by four dimensional parallel computing Method for organizing computer operations on a system of parallel processors to invert electromagnetic field data (11) from a controlled-source electromagnetic survey of a subsurface region to estimate resistivity structure (12) within the subsurface r... | 10/05/2010 |
| 7805249 | Method for performing controlled source electromagnetic surveying with multiple transmitters Method for separating responses of multiple transmitters m a controlled source electromagnetic survey by using mutually orthogonal transmitter waveforms and transforming the combined response to the frequency domain (144) The mutual orthogonality can be based... | 09/28/2010 |
| 7801681 | Method for phase and amplitude correction in controlled source electromagnetic survey data The method for correcting the phase of measured electric signals or magnetic signals of field data from a controlled source electromagnetic survey (CSES) by comparing the measured field data corresponding to a selected frequency to the simulated data for various sig... | 09/21/2010 |
| 7783462 | Reservoir evaluation methods Described herein are methods of evaluating reservoirs. At least one of the methods includes providing a three dimensional reservoir framework having a plurality of cells; assigning one or more constant reservoir property values to some or all of the cells to provide... | 08/24/2010 |
| 7761270 | Computer system and method having a facility management logic architecture The invention relates to a computer system and method for simulating transport phenomena in a complex system. The computer system comprises a logic interface that enables a user of the computer system to dynamically construct logic to customize simulation of the phy... | 07/20/2010 |
| 7761237 | Method for quantification and mitigation for dip-induced azimuthal AVO This patent delineates methods for quantifying and mitigating dip-induced azimuthal AVO effects in seismic fracture detection using Azimuthal AVO analysis by accurately accounting for the divergence correction and azimuthal dependence of the reflection angle. Soluti... | 07/20/2010 |
| 7573780 | Electrode configurations for suppression of electroseismic source noise Method for survey design including configuring electrodes to reduce near-surface noise in the seismic response from an electroseismic survey of a subterranean formation. Different embodiments of the invention include (1) selective measurement of the surface noise to... | 08/11/2009 |
| 7436734 | Shaped high frequency vibratory source The present invention is a method of processing seismic data in which one or more seismic vibrators are activated with one or more pilot signals and vibrator motions are recorded along with seismic data. Vibrator signatures are computed from measured vibrator motion... | 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 |
| 7059407 | Method and apparatus for stimulation of multiple formation intervals The invention discloses methods of, as well as apparatus and systems for, perforating and treating multiple intervals of one or more subterranean formations intersected by a wellbore by deploying within said wellbore a bottom-hole assembly (“BHA”) having a perfo... | 06/13/2006 |
