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| Number | Title | Issue Date |
| 7627431 | Method for processing seismic data corresponding to acquisitions from a medium with azimuthal anisotropy Method of processing seismic data corresponding to acquisitions carried out in a medium exhibiting azimuthal anisotropy, characterized in that for two sets of data corresponding, for one and the same seismic variable and for one and the same ground zone, to at least... | 12/01/2009 |
| 7436735 | Method for seismic processing, in particular for compensating birefringence on seismic traces A method of seismic processing for obtaining information on the geophysics of the subsoil includes acquiring seismic traces at at least one point on the surface of the subsoil or in the subsoil, the seismic traces corresponding on each occasion to two perpendicular ... | 10/14/2008 |
| 7406383 | Method of estimating the illumination fold in the migrated domain The invention relates to an estimate of the seismic illumination fold (x, p) in the migrated 3D domain at an image point x, for a dip of vector p characterized in that the illumination fold I (z, p; s, r) is estimated for each (source s, receiver r) pair in the seis... | 07/29/2008 |
| 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 |
| 7369944 | Method of processing seismic data for AVO or AVOA characterization The invention relates to a method of processing seismic data comprising a gather of seismic traces organised according to one or several acquisition parameters, each trace comprising a seismic signal defined by an amplitude as a function of time or depth, the method... | 05/06/2008 |
| 7337070 | Method for treating seismic cubes corresponding to obtained for common zone at different times Method of processing a collection of seismic cubes corresponding to one and the same acquisition zone and to various moments of acquisition, characterized in that at least one seismic cube which is an estimate of the component common to at least two seismic cubes co... | 02/26/2008 |
| 7104728 | Method for deploying seafloor equipment A method for deploying and retrieving seafloor equipment modules is disclosed. A conveyor has a fixed end and a free end. The conveyor is deployed into a body of water until the free end reaches, or is proximate to, the seafloor. The conveyor is dragged through the ... | 09/12/2006 |
| 6639871 | Seismic processing methods A method of processing seismic traces corresponding to two modes of propagation in the subsoil, the method being characterized by the following steps: determining at least one pair of correlated events from the seismic traces corresponding to the two ... | 10/28/2003 |
| 6603707 | Method of reducing harmonic noise in vibroseis operations The invention relates to a vibroseis analysis method in which frequency-sweep signals (10) are emitted into a subsurface, the signals reflected on the substrata of such a subsurface (10, 20) are logged and the logged signals are processed, a method in whi... | 08/05/2003 |
| 6418380 | Method for seismic processing and in particular for three-dimensional seismic exploration using seismic data migration A seismic processing method to solve an eikonal equation to determine a travel time (t) of a sound wave between a seismic source at a first set of coordinates (x2,y2, z2) and a point underground at a second set of coordina... | 07/09/2002 |
| 5835451 | Offshore seismic prospecting method using a hydrophone-geophone sensor pair A method of seismic prospecting offshore by means of at least one pair of hydrophone-geophone sensors disposed at the water bottom, in which a sound source at the surface of the water emits a sound signal and the sensors at the water bottom take hydrophon... | 11/10/1998 |
| 5771203 | Seismic prospection method with application of a self-deconvoluted prediction error filter The invention relates to a seismic prospection method in which a seismic disturbance is generated in the sub-soil and sensors are used to pick up seismic data, the seismic data being processed to deduce useful information concerning the geology of the sub... | 06/23/1998 |
| 5757720 | Processing method for calibrating a hydrophone-geophone sensor pair, and a seismic prospecting method implementing the processing A processing method for calibrating at least one pair of hydrophone-geophone sensors disposed on a water bottom and used in seismic prospecting processing in which a sound source emits a signal into the water and the sensors at the water bottom pick up hy... | 05/26/1998 |
| 5635685 | Electroacoustic transducer with mechanical impedance transformer The transducer comprises for example a block (1) of sensitive elements such as piled piezoelectric disks held up by a stud bolt between two ferrules and a shell (8) all in one piece, that is arranged around the piling with a concave central part (8A) exte... | 06/03/1997 |
| 5579281 | Method of improving an estimate of seismic wave propagation velocities by focusing analysis The invention relates to a method of processing seismic data in which a volume of raw focusing data is constituted by downwards extrapolation of seismic data obtained by means of at least one seismic source and of sensors disposed at the surface at regula... | 11/26/1996 |
| 5519322 | Magnetic field method and apparatus for evaluating in situ and/or measuring the premeability of a rock formation A method and the apparatus for in situ analysis of a rock formation that already contains fluid in its interstices an excitation device is provided for imparting motion to the fluid relative to the rock formation and the magnetic fields created by the rel... | 05/21/1996 |
| 5475187 | String of sondes A string of sondes is designed to be lowered down a borehole by means of a cable in order to detect the arrival of seismic waves therein, the sondes including retractable anchor means that are hydraulically actuateable and that are connected by a hydrauli... | 12/12/1995 |
| 5465323 | Method for modelling a surface and device for implementing same A method for obtaining a model of a surface including the steps of obtaining measurements of geometrical data concerning specific points on the surface, making a grid of the surface, with the grid passing through said points, memorizing, at an address whi... | 11/07/1995 |
| 5408183 | Method of dating different levels in a terrestrial geological bed using remanent and induced magnetization measurements The method of the invention consists in measuring remanent magnetization along a borehole drilled through a geological bed, in detecting the set of reversals in the remanent magnetization, in measuring the induced magnetization at the various levels in sa... | 04/18/1995 |
| 5200927 | Method and apparatus for controlling an immersed multisource array emitting acoustic impulses In a multisource array of seismic sources, each source is associated with one or more sensors (Ci) for picking up the impulses (TB or signature) emitted by the associated source when triggered. The apparatus essentially includes one or more acquisition ar... | 04/06/1993 |
| 5184329 | Method and device for optimizing the triggering of an array of marine seismic sources Each source of an array of seismic signal sources is associated with one or several sensors (Ci) which pick up the impulses the associated source emits at the time of triggering. The device essentially includes an apparatus (6) for the acquisition and the... | 02/02/1993 |
| 4986350 | Device for the seismic monitoring of an underground deposit For seismic monitoring of a petroleum deposit at least one signal receiving unit is fixed to an outside of a casing pipe before the casing plate is cemented in a borehole passing through the monitored zone. At least one housing, defined by projecting elements,... | 01/22/1991 |
| 4914636 | Method and device for acquisition of seismic data In a method of acquiring seismic data in a prospecting area, an array of excitation vibration receivers is placed on or over the terrestrial surface. A plurality of excitation vibration sources is disposed in the vicinity of the array, each source emittin... | 04/03/1990 |
| 4852004 | Method and apparatus for processing seismographic data by correlation The invention relates to a method and apparatus for processing data from a seismic survey. In accordance with the invention, the data is regrouped to form a plurality of seismic images (A1, A2, A3, B1, B2, B3, C1, C2, C3). These images being defined by im... | 07/25/1989 |
| 4789969 | Method of measuring the anisotropy of propagation or reflection of a transverse wave, particularly a method of geophysical prospecting by measurement of the anisotropy of propagation or of reflection of shear waves in rocks The invention permits the measurement of the propagation anisotropy of a transverse wave between two given reference points of a non-isotropic medium (M), particularly a shear wave in a stratified or fissured rock. According to the invention: a source (S) and ... | 12/06/1988 |
| 4599713 | Seismic detector A seismic detector comprises a casing the lower part (10) of which is provided with a plurality of apertures (19). A hydrophone transducer (70) comprising an annular ceramic member provided with metallized surfaces (71,72) is mounted in the casing and def... | 07/08/1986 |
| 4508191 | Method and device for initiating an underwater implosive seismic source The present invention relates to a method for initiating an underwater implosive seismic source which comprises the steps of: measuring the instantaneous pressure at the location of the source; determining, from this measured pressure, the bubble period s... | 04/02/1985 |
| 4417210 | Method of geophysical prospection using transient currents In a method of geophysical prospection a transmitter dipole and a receiver dipole which is sensitive to an electromagnetic field are positioned in cooperation with the subsoil. An impulsive excitation current is applied repeatedly to the transmitter dipol... | 11/22/1983 |
| 4408677 | Method and apparatus for the production of seismic shocks A releasable heavy mass is provided which is capable of producing by impact with the ground a shock which can be used in seismic prospecting. This mass is characterized by the fact that it comprises very many individual heavy elements connected together in a w... | 10/11/1983 |
| 4403313 | Process and an apparatus for seismic geophysics with processing by focuses The invention relates to seismic prospecting of the sub-surface. At least two adjacent focuses F and F', at least one reflecting interface H and directions such as (D1) and (D2) are selected in the sub-surface. A seismic trace, from which... | 09/06/1983 |
| 4346779 | Vapor implosion in a closed flexible enclosure The invention relates to seismic sources in which a shock wave is produced in a liquid mass by the implosion of a volume of vapor, particularly water vapor. According to the invention, the vapor to be imploded is formed inside a closed, flexible enclosure... | 08/31/1982 |
| 4327813 | Generation of seismic sources The invention relates to the creation of a shock wave within a mass of water by implosion of a vapor bubble. According to the invention, a controlled quantity of liquid water under pressure and which is super-heated relative to the mass of water is releas... | 05/04/1982 |
| 4321540 | Electric prospecting of the subsoil with lineal electrodes The invention concerns electrical prospecting of the subsoil. According to the invention, electrical prospecting is performed with either continuous or alternating current by using a drilling tubing as at leasts one of two lineal exciter electrodes. The p... | 03/23/1982 |
| 4258322 | Electromagnetic subsoil prospecting process using an asymptotic low frequency range In a sub-soil prospecting process a vertical magnetic field transmitter dipole and a receiver dipole are placed on the ground, away from each other. The receiver dipole is oriented to detect a radial horizontal magnetic field relative to the transmitter d... | 03/24/1981 |
| 4136754 | Process for seismic exploration by means of a directive source The invention concerns a process for seismic exploration. It consists in simultaneously emitting disturbances from a plurality of sources S1 . . . Sn immersed at various depths and positions chosen so as to maximize the power transmitted vertically and to... | 01/30/1979 |
| 4020447 | Method and apparatus for recording seismic signals A method and apparatus for marine seismic prospecting in which a long spacing linear array of seismic detectors is spaced from a seismic source and connected to a recording apparatus on a survey ship. A short spacing linear array of seismic detectors is a... | 04/26/1977 |
