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| Number | Title | Issue Date |
| 8004931 | Dynamic source parameter selection for seismic vibrator data acquisition A method and system of operating single vibrator source points for seismic data acquisition includes acquiring real-time field survey locations for a first plurality of seismic vibrators, determining at least one geometrical relationship between each of the first pl... | 08/23/2011 |
| 8000168 | Dynamic source parameter selection for seismic vibrator data acquisition A method and system of operating single vibrator source points for seismic data acquisition includes acquiring real-time field survey locations for a first plurality of seismic vibrators, determining at least one geometrical relationship between each of the first pl... | 08/16/2011 |
| 7974153 | Three-dimensional seismic survey methods using a perturbation pattern to provide bin fractionation A receiver point arrangement is deployed having one or more receiver lines, each receiver line having receivers with substantially uniform inline spacing. A seismic source is triggered at each source point in an arrangement of source points along one or more source ... | 07/05/2011 |
| 7885143 | Seismic acquisition system Various technologies for a seismic acquisition system, which may include an acquisition central system configured to determine a desired start time for a sweep cycle in one or more vibrators and a recorder source system controller in communication with the acquisiti... | 02/08/2011 |
| 7768872 | Offset-azimuth binning for migration and velocity analysis The present invention comprises a method of choosing a cell structure for seismic gathers dictating a grid of azimuth-offset bins that can be of various shapes and sizes. Processes that use offset-azimuth information are optimized to operate on these cells of azimut... | 08/03/2010 |
| 7440853 | Systems and methods for detecting shallow buried objects The invention relates to a seismic system having an array of nodes, each capable of emitting and detecting seismic signals. The array of nodes is mounted on a mobile platform in a certain geometry and is configured to acquire subsurface data, and more particularly d... | 10/21/2008 |
| 7391673 | Method of wide azimuth seismic acquisition According to a preferred aspect of the instant invention, there is provided a system and method for acquiring seismic data in a marine environment, wherein at least two source vessels are used in conjunction with a recording vessel which tows a plurality of hydropho... | 06/24/2008 |
| 7359284 | Method for processing borehole seismic data Seismic data recorded by subsurface seismic sensors placed in a borehole, such as an oil or gas well, are transformed via a process of upward wavefield propagation to pseudo-receivers at the surface of the earth. The seismic data thus transformed can be processed as... | 04/15/2008 |
| 7239579 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 07/03/2007 |
| 7209407 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 04/24/2007 |
| 7203600 | Geophysical data processing A mehtod of determinig an integral of a function over an n-dimensional intergratio domain from the values of the function at a plurality of discrete data points within the integration domain, comprises partitioning the integration domain into a plurality of k-dimens... | 04/10/2007 |
| 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 |
| 7046581 | Well-to-well tomography A method of obtaining a spatial model of a property of part of a subsurface formation located between underground seismic receivers in which at least two sets of pairs of seismic receivers are utilized and one pair of receivers is used to record a signal from a seim... | 05/16/2006 |
| 7039525 | Method for seismic migration using explicit depth extrapolation operators with dynamically variable operator length Explicit depth extrapolation operators are constructed with variable operator lengths depending on maximum dip angle, accuracy condition, and wavenumber. Operator tables are then constructed using the explicit depth extrapolation operators. In a further embodiment, ... | 05/02/2006 |
| 6992951 | Permanent seafloor seismic recording system utilizing micro electro-mechanical systems seismic sensors and method of deploying same Provided is a permanent seafloor seismic recording system utilizing Micro Electro-Mechanical Systems seismic sensors. The system includes and expandable backbone, multiple hubs and sensor lines. The sensor lines include multiple sensor modules that include 3-C accel... | 01/31/2006 |
| 6977867 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 12/20/2005 |
| 6959245 | Soil and topography surveying Methods of characterizing subsurface conditions in a selected geographic region previously associated as a whole with a specific subsurface material characteristic reference profile such as from a USDA-NRCS soil survey. The method includes deploying a sensing tool a... | 10/25/2005 |
| 6928367 | Reservoir fracture characterization Systems and methods of reservoir fracture characterization are disclosed. In one embodiment, the method includes: 1) obtaining seismic traces; 2) combining seismic traces into gathers that reveal acoustic reflectivity as a function of offset, azimuth, and position; ... | 08/09/2005 |
| 6894949 | Walkaway tomographic monitoring Surface seismic sources are used to simulate crosswell data between the two wells, and, using surface receivers, reflection seismic data are obtained over the region between the two wells. Reflection data are preferably obtained from reflectors both above and below ... | 05/17/2005 |
| H2116 | Method for detecting, locating, and characterizing single and multiple fluid-filled fractures in fractured formations A method to analyze full waveform multiple (i.e., monopoles, dipoles, quadrupoles) acoustic measurements in a fluid-filled borehole, surrounded by a system of fractures oriented parallel to the axis of the borehole. The method uses new measurement attributes, herein... | 04/05/2005 |
| 6816435 | Method for estimating the position of a drill The present invention relates to a method for estimating the position and trajectory of a drill during drilling of boreholes in rock. The method comprising the steps of determining the starting position of the drill bit and recording the received transient seismic w... | 11/09/2004 |
| 6754590 | Seismic surveying method An improved method of acquiring seismic data using a plurality of vibratory seismic sources including the steps of deploying a seismic sensor deploying a plurality of vibratory seismic sources at different source points; simultaneously actuating the seismic sources;... | 06/22/2004 |
| 6691073 | Adaptive state space signal separation, discrimination and recovery This invention unifies a set of statistical signal processing, neuromorphic systems, and microelectronic implementation techniques for blind separation and recovery of mixed signals. A set of architectures, frameworks, algorithms, and devices for separati... | 02/10/2004 |
| 6564150 | System and method for orienting seismic energy receivers to yield discriminated vertical shear waves A system for, and method of, orienting seismic energy sources and seismic energy receivers to substantially separate a compressional wave from a vertical shear wave. The method includes reflecting a seismic energy from a subsurface interface to produce a ... | 05/13/2003 |
| 6545944 | Method for acquiring and processing of data from two or more simultaneously fired sources A method of seismic surveying and seismic data processing using a plurality of simultaneously recorded seismic-energy sources. An activation sequence for each of said plurality of seismic energy sources may be determined such that energy from seismic sour... | 04/08/2003 |
| 6498990 | System and method for orienting seismic energy sources and receivers to yield discriminated horizontal and vertical shear waves A system for, and method of, orienting seismic energy sources and seismic energy receivers to yield discriminated horizontal and vertical shear modes. In one embodiment, the system includes: (1) an initial matrix representing wave energy produced by a sel... | 12/24/2002 |
| 6091668 | Static marine seismic system and method A system and method for periodically providing information about subsurface formations in a marine environment using a non-towed seismic signal source (3) and a static array of seismic signal receivers (4) is disclosed. The seismic signal source (3) compr... | 07/18/2000 |
| 6081482 | Semi-recursive imaging under complex velocity structures A computationally efficient semi-recursive Kirchhoff migration algorithm is capable of obtaining accurate images of complex structures in complex geological environments which commonly give rise to multivalued arrivals. The method alternates wave-equation... | 06/27/2000 |
| 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 |
| 6044040 | Wide-azimuth, radially-directed seismic data acquisition method A method of acquiring seismic data locates a central position above a peaked stratigraphic subsurface. The method then positions receiver lines radially out from the central position, angularly displaced relative to one another, at equal intervals, throug... | 03/28/2000 |
| 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 |
| 6026059 | Method of creating common-offset/common-azimuth gathers in 3-D seismic surveys and method of conducting reflection attribute variation analysis Processes are described for providing a data set useful for performing analysis of reflection attribute variation among traces in a window of three-dimensional seismic data, wherein the traces have a reflection point assigned thereto and wherein the trace... | 02/15/2000 |
| 6026058 | Method for sorting seismic data An improved method for gathering traces in a 3-D seismic survey is disclosed. In one configuration, receiver lines having equally spaced geophone receivers stations are run in one direction, and lines of equally spaced shotpoint stations run orthogonal to... | 02/15/2000 |
| 6002640 | Seismic data acquisition system A seismic data acquisition system is featured that utilizes a series of nearly identical seismic shots (SISS) to synchronize and to communicate with novel data acquisition units (NDAU) located in the field. Each SISS seismic shot is carefully timed to pro... | 12/14/1999 |
| 5973995 | Method of and apparatus for marine seismic surveying The present invention enables both deep marine seismic surveys and site seismic surveys to be performed simultaneously. A survey vessel tows a first seismic array (6, 16, 20) for a deep survey and a second seismic array (6, 16, 20) for the site survey. Th... | 10/26/1999 |
| 5963879 | Binning of three dimensional seismic data Three dimensional seismic survey data are acquired and processed using a hexagonal sampling grid. The seismic data are grouped into hexagonal bins defined by the hexagonal grid instead of into rectangular bins defined by a rectangular grid. Method and app... | 10/05/1999 |
| 5924049 | Methods for acquiring and processing seismic data A method for acquiring and processing seismic survey data from two or more seismic sources activated simultaneously or nearly simultaneously or for a single source moved to and fired at different locations. In one aspect such a method includes acquiring s... | 07/13/1999 |
| 5901113 | Inverse vertical seismic profiling using a measurement while drilling tool as a seismic source A reverse VSP system is provided and uses a frequency-controllable modulator of an MWD tool as a downhole seismic source. The modulator has a rotor and stator arranged to provide substantially sinusoidal outputs, and is controlled to provide a "Vibroseis"... | 05/04/1999 |
| 5787051 | Three-dimensional seismic acquisition A method of three-dimensional seismic acquisition comprising providing a plurality of substantially parallel source/receiver lines, each said source/receiver line comprising a linear array of seismic energy receivers at substantially equally spaced statio... | 07/28/1998 |
| 5774690 | Method for optimization of element placement in a thinned array A method for generating a thinned array having an optimal directional response wherein an initial population of possible element occupancy patterns is generated and a relative fitness value for each of the element occupancy patterns in the initial populat... | 06/30/1998 |
