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| Number | Title | Issue Date |
| 7480205 | 3D fast fault restoration Solutions to the problem of reversing seismic fault movements are formulated using a model based on elasticity theory, and using finite element and boundary element methods for generating a solution. The solution involves defining slip vectors from known formations ... | 01/20/2009 |
| 7400976 | Utility mapping and data distribution system and method A system and method of mapping underground utilities and other subsurface objects involves one or more of acquiring utility location data using a number of different detectors and sensors, processing the multiple detector/sensor output data to produce mapping data, ... | 07/15/2008 |
| 7388811 | Method for separating microseismic signals from seismic signals emitted by one or several sources This invention is a method of separating induced microseismicity signals from seismic signals acquired within active seismic monitoring operations carried out in underground zones under development which has application for monitoring of underground hydrocarbon or f... | 06/17/2008 |
| 7242637 | Time-lapse seismic survey of a reservoir region A method of investigating a reservoir region in a subsurface formation by a time-lapse seismic survey. The subsurface formation comprises a further formation region adjacent to the reservoir region. Data are obtained from a time-lapse seismic survey and includes sei... | 07/10/2007 |
| 7243028 | Methods and apparatus for reducing electromagnetic signal noise The present invention generally provides methods and apparatus for reducing noise in a detected electromagnetic wave used to telemeter data during a wellbore operation. In one embodiment, two surface antennae are placed on opposite sides of the wellbore and at the s... | 07/10/2007 |
| 7196634 | Systems for predicting earthquakes and methods of employing such systems A method of predicting earthquakes includes the step of positioning a first transducer array adjacent to a seismically active region and below the water table, i.e., within the zone of saturation. The first transducer array includes a first plurality of seismometers... | 03/27/2007 |
| 7177765 | Method of general elastic inversion by combination of calculated pseudo-shear and measured compressional seismic amplitude information A method designed to combine both pseudo compressional interval velocity and pseudo shear interval velocity from seismic data for predicting fluid type and porosity in oil and gas exploration. The first step is the generation of ψS, pseudo shear reflectivity data, ... | 02/13/2007 |
| 7132952 | Security system for a portable article The combination of a portable article and a security system. The security system has a flexible element/tether with a length. The flexible element/tether is connected between the portable article and a support to confine movement of the portable article within a ran... | 11/07/2006 |
| 7110323 | Method, system and apparatus for interpreting seismic data using duplex waves A Method for Interpreting Seismic Data Using Duplex Waves is described. Whereas substantially horizontal boundaries are readily identified using conventional processing methods based on primary reflections, it has been difficult or impossible to use such methods for... | 09/19/2006 |
| 7104357 | Device for generating focused elastic waves in a material medium such as underground, and method using same An electromechanical device for generating elastic waves in a material medium such as the subsoil in a frequency range where the wavelengths of the waves generated are great in view of the dimensions of the device, and method of implementation. The device comprises ... | 09/12/2006 |
| 7102961 | Installation of seismic survey devices in shallow, low-angle boreholes The specification discloses a system and related method for installing seismic sensors in shallow, low-angle boreholes for obtaining conventional three-dimensional and four-dimensional seismic surveys. Installing seismic sensors in shallow, low-angle boreholes remov... | 09/05/2006 |
| 7073405 | Sensor for profiling system A sensor for detecting an acceleration on a surface. The sensor exchanging messages with a computer through a communication interface. The sensor comprises an accelerometer for outputting a signal representative of the acceleration and an interface unit comprising a... | 07/11/2006 |
| 7065004 | Horizon-based residual depth migration velocity analysis A method is disclosed for processing seismic data. The method includes prestack depth migrating the seismic data to generate common image gathers using an initial velocity-depth model. Horizons in the migrated seismic data are selected. Residual migration velocity a... | 06/20/2006 |
| 7042801 | System for geophysical prospecting using induce electrokinetic effect Methods are disclosed employing seismic waves having infrasonic frequencies in the range of about 0.1–20 Hz for generating electromagnetic waves of similar infrasonic frequency in hydrocarbon bearing subterranean formations located at depths up to about 5000 meter... | 05/09/2006 |
| 6975942 | Underground utility detection system and method Systems and methods provide for detection of one or more underground utilities. Radar waves and seismic waves of about the same wavelength are generated and communicated into a subsurface. Radar and seismic response signals resulting from communication of the radar ... | 12/13/2005 |
| 6954402 | Method of wave diagnostics of the oil-and-gas-deposit A method of diagnostics of oil-and-gas deposit for seismic survey on the basis of the complex of waves of the different types. It is performed by means of the insonification of the vicinity of the borehole by the seismic waves, the recording of the displacement vect... | 10/11/2005 |
| 6952101 | Method for determining direction to a target formation from a wellbore by analyzing multi-component electromagnetic induction signals A method is disclosed for determining a direction of a target formation with respect to an instrument in a wellbore. The target has an electrical conductivity different than earth formations surrounding the wellbore. The method includes inducing time varying electro... | 10/04/2005 |
| 6935424 | Mitigating risk by using fracture mapping to alter formation fracturing process A formation fracturing method with which to mitigate risk to hydrocarbon productivity includes pumping fracturing fluid, during at least part of a fracturing job time period, into a well to fracture a formation; generating signals, within the fracturing job time per... | 08/30/2005 |
| 6931378 | Method, systems, and program product for selecting and acquiring data to update a geophysical database Methods and systems for collecting, managing, distributing and updating geophysical data primarily for E&P companies include in one embodiment the sale of subscriptions entitling paid subscribers access to all subscribed data including both preview and full data. In... | 08/16/2005 |
| 6925387 | Method and apparatus for kinematically linking multiple seismic domains A method and apparatus for utilizing seismic data contemporaneously across multiple seismic domains is disclosed. The method comprises kinematically linking a first point in a set of seismic data having at least three-dimensions in a first seismic domain with a seco... | 08/02/2005 |
| 6922653 | Information processing system, information processing method, information processor, information processing method, and program A magnetic 3D-position/orientation measuring device measures the position of a receiver in a measurement space. A control device computes correspondence between a measurement space and a real space based on the measured value and a real-space value, which correspond... | 07/26/2005 |
| 6915217 | Laser doppler vibrometer for remote assessment of structural components A method and system for remotely inspecting the integrity of a structure. This can be performed by a method creating a vibratory response in the structure from a remote location and then measuring the vibratory response of the structure remotely. Alternatively, this... | 07/05/2005 |
| 6912468 | Method and apparatus for contemporaneous utilization of a higher order probe in pre-stack and post-stack seismic domains A method for contemporaneously utilizing seismic data in the pre-stack seismic domain and the post-stack seismic domain is disclosed. The method includes initiating a higher order probe at a three-dimensional coordinate in a post-stack seismic volume; and instantiat... | 06/28/2005 |
| 6215499 | Method and apparatus for interactive curved surface seismic interpretation and visualization An enlarged computer graphic image of seismic data is displayed on a concave three-dimensional surface having a shape corresponding to the shape of selected data extracted from a three-dimensional seismic volume. Thus providing an enlarged image of a seis... | 04/10/2001 |
| 6091669 | Method of determining, displaying and using the relative changes of elastic modulus and density of underground rock The general object of the present invention is to provide a method for determining and displaying the relative changes of elastic moduli and that of density of geologic formations and for utilizing these relative changes and plottings for gas/oil explorat... | 07/18/2000 |
| 6075752 | Method for exploring an environment with a complex tectonics The method consists in building a common midpoint gather of seismic traces of which the CMP point is said given point, subjecting the traces of this gather to dynamic and/or static corrections, and characterized in that the gather associated with the give... | 06/13/2000 |
| 6065562 | System for imparting compressional and shear waves into the earth A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a piston/cylinder relationship. Spaced apart horizontal top... | 05/23/2000 |
| 6052333 | Method for seismic antenna illumination of subterranean feature for display and evaluation Monofrequency continuous wave signals of long duration are used as inputs form sources of known characteristics and location. These signals are reflected off subterranean features and serve to paint the features for display and evaluation. A primary featu... | 04/18/2000 |
| 6049508 | Method for seismic monitoring of an underground zone under development allowing better identification of significant events The invention is a method for facilitating discrimination and identification of seismic or microseismic events by means of permanent pickups in an underground zone under development. The method comprises permanent installation of, in one or more wells, el... | 04/11/2000 |
| 6041017 | Method for producing images of reservoir boundaries A method of producing images of the limits of a geologic reservoir from measurements of fluid pressure in a well controlled to produce from the reservoir at a constant flow rate. The measurements are taken over a period of time, which includes initiation ... | 03/21/2000 |
| 6028819 | Method and system of simulating and optimizing land seismic operations A method and system for simulating and optimizing land seismic survey operations. The method and system utilizes spatially referenced data and nonspatial data relevant to land seismic survey operations such as high resolution satellite and airborne imager... | 02/22/2000 |
| 6028820 | Method for determining the presence of fluids in a subterranean formation A method for seismic data interpretation for the purposes of identification of oil, gas and water accumulation locations and delineation of their contours uses a model of discrete media with inhomogeneous stresses. For a selected reflection horizon, the r... | 02/22/2000 |
| 5999486 | Method for fracture detection using multicomponent seismic data The present invention provides a method for interpreting shear-wave seismic data to detect fractures in the subsurface of the earths crust. Seismic shear waves are acquired along medium symmetry planes and their corresponding AVO intercepts and gradients ... | 12/07/1999 |
| 5946271 | Calibration system for use in time lapse tomography A discrete, minimally-equipped standard seismic calibration system is permanently installed over a subsurface reservoir structure that contains fluids of economic interest. Changes in the fluid content as a function of long-term time lapse may introduce c... | 08/31/1999 |
| 5828570 | Unconstrained 2-D transformation filter An unconstrained transformation filter operator that is efficient in terms of computer resources and that improves circularly symmetric migrated impulse response for steep dips. The filter operator combines selected desirable attributes of the more effici... | 10/27/1998 |
| 5646379 | Attentuator for borehole acoustic waves An attenuator for use in attenuating tube waves in a borehole includes a body formed from a permeable material having a rigid matrix which can be saturated with fluid. In its simplest form, the attenuator is one or more cylindrical bodies as part of a bor... | 07/08/1997 |
| 5574218 | Determining the length and azimuth of fractures in earth formations A method for determining the approximately length and the azimuth of a hydraulic fracture after it has been formed in a subterranean formation without requiring the use of dedicated monitor wells or the need for positioning sensors at subsurface locations... | 11/12/1996 |
| 5412623 | Multivibrator waveform monitoring system A multivibrator waveform monitoring system uses a plurality of seismic energy sources for giving vibrations to strata and a prospector, connected to a geophone, for measuring reflected vibrations. Each of the plurality of seismic energy sources includes a... | 05/02/1995 |
| 5408441 | Method for seismic exploration in artic regions A method for obtaining seismic data in frigid regions without interference from flexural ice waves. In an exemplary embodiment, seismic data is produced by using an energy source to generate a seismic wave in a floating ice sheet. Seismic disturbances cau... | 04/18/1995 |
| 5311484 | Method and apparatus for petroleum and gas exploration In the exploration for petroleum or natural gas, drilling targets are identified by locating local maxima of horizontal gradient in the top-of-geopressure surface of a region of exploration. The probability of finding hydrocarbon deposits is significantly... | 05/10/1994 |
