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| Number | Title | Issue Date |
| 7260024 | Housing for a seismic sensing element and a seismic sensor A housing for a seismic sensing element (3) for use on the earth's surface comprises connecting means (5) for connecting the housing (3) to a support cable (2) so as to allow relative movement between the sensor housing (3) and the... | 08/21/2007 |
| 6868035 | Method and apparatus for coupling seismic sensors to a borehole wall A method and apparatus suitable for coupling seismic or other downhole sensors to a borehole wall in high temperature and pressure environments. In one embodiment, one or more metal bellows mounted to a sensor module are inflated to clamp the sensor module within th... | 03/15/2005 |
| 6814179 | Seismic sensing apparatus and method with high-g shock isolation A method and apparatus for isolating a seismic sensor module from high-g shock loads such as those encountered during handling, deployment and retrieval of the module. The sensor module includes one or more MEMS accelerometers in an electronics package. The electron... | 11/09/2004 |
| 6612397 | Shear wave generator A seismic shear wave generator comprising a seismic wave source (3) arranged on a base plate (11) arranged for being placed at the seabed, and a coupling device (1) arranged for coupling the wave source (3) mechanically to the seabed in order for shear wa... | 09/02/2003 |
| 6584038 | Device for receiving seismic waves and method for coupling them with a solid environment Seismic wave reception device comprising a hydrophone and/or a geophone and method for coupling it (or them) with a solid medium such as the subsoil. The device comprises at least one hydrophone (2) immersed in a closed flexible-walled sheath (7) filled with l... | 06/24/2003 |
| 6536553 | Method and apparatus using acoustic sensor for sub-surface object detection and visualization An apparatus for detecting an underground abject includes a container in contact with the ground surface; a medium disposed in the container; at least one acoustic sensor disposed in the medium in the container; and an output device connected to the acous... | 03/25/2003 |
| 6366537 | Geophone and method for the study of eleastic wave phenomena A method for the study of elastic wave phenomena in the ground, where the detection of said phenomena is carried out with the use of at least a geophone comprising at least a couple of transducers (20, 21; 37, 38), each transducer (20, 21; 37, 38) being a... | 04/02/2002 |
| 6288976 | Seismic geophone coupling system An apparatus and a method for anchoring a seismic geophone to soil. The apparatus comprises a base having a base section for engagement with the geophone. The base also has an anchor end attachable to the soil to restrict movement of the geophone after sa... | 09/11/2001 |
| 6131695 | Mobile sensor for grounds penetrating sonar A method for echo-locating underground structures, such as piping, by launching a series of acoustic impulses into the ground to insonify the structures in an area where the structures are believed to be buried, detecting acoustic echoes returned from the... | 10/17/2000 |
| 6098516 | Liquid gun propellant stimulation To increase a yield of a hydrocarbon such as oil from a subsurface reserv, the reservoir is stimulated by pumping liquid gun propellant (LP) into the reservoir and igniting the LP. The LP is pumped into a packed-off region in a cased well; the depth of t... | 08/08/2000 |
| 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 |
| 5802013 | Mobile sensor for ground penetrating sonar A cart-mounted acoustic transmitter and receiver system for echo-locating underground structures, such as piping. A transmitting transducer, mounted in a non-resonant tube and positioned adjacent to the ground, directs sound waves downwardly through an ai... | 09/01/1998 |
| 5724307 | Method for improving the coupling response of a water-bottom seismic sensor A receiver consistent deconvolution operator models the damped oscillatory wavetrain that is related to geophone coupling to the water bottom. The operator is a best-fitting function that endeavors to describe the difference in coupling response between a... | 03/03/1998 |
| 5724311 | Method and device for the long-term seismic monitoring of an underground area containing fluids Within the scope of operations of long-term regular monitoring of an underground area, a seismic emission-reception device is installed in a fixed position on the production site, so as to have time stable operating conditions of identical emission-recept... | 03/03/1998 |
| 5554829 | Land seismic acoustic source An apparatus and method for generating a seismic signal in the earth consisting of positioning a force-modulating means on the surface of the earth and then positioning a vehicle such that at least some of the weight of the vehicle is supported by the for... | 09/10/1996 |
| 5484968 | Interference device for discriminating a certain oscillation An inference device for discriminating an earthquake includes an ON/OFF signal generating means for generating an ON/OFF signal corresponding to an oscillatory wave, a characteristic parameter extracting means for extracting at least one of three characte... | 01/16/1996 |
| 5418335 | Synchronized acoustic source The current invention is an apparatus useful for generating seismic waves with an enhanced signal to noise ratio. The enhanced signal is produced at a fundamental resonant frequency, and multiples thereof, by producing a near zero acoustic pressure condit... | 05/23/1995 |
| 5371330 | Synchronized acoustic source The current invention is an apparatus useful for generating seismic waves with an enhanced signal to noise ratio. The enhanced signal is produced at a fundamental resonant frequency, and multiples thereof, by producing a near zero acoustic pressure condit... | 12/06/1994 |
| 5365491 | Marine seismic bottom geophone coupling and anchor A marine seismic bottom geophone anchor and coupling device comprising two rectangular fabric sections attached along their edges and along a plurality of lines between edges to form a plurality of pockets. The pockets are filled with a weighting material... | 11/15/1994 |
| 5360951 | Earth reaction seismic source A source for emission of seismic energy waves into subsurface earth formations is provided with electrically energizable signal generators mounted between two plate members. One of the plate members is anchored to the earth surface and the other rests on ... | 11/01/1994 |
| 5302782 | Three-component borehole wall-locking seismic detector A seismic detector for boreholes is described that has an accelerometer sensor block for sensing vibrations in geologic formations of the earth. The density of the seismic detector is approximately matched to the density of the formations in which the det... | 04/12/1994 |
| 5253223 | Seismic device A device including instruments for use on the seabed for the collection and recording of first signals during off-shore seismic exploration. The device includes first, second and third geophones arranged in x, y and z directions, respectively, which produ... | 10/12/1993 |
| 5206840 | Geophone implantation system The method of implanting a geophone in the earth including the steps of drilling a borehole in the earth, pumping grout into the borehole, pumping a geophone down the interior of a cylindrical pipe positioned in the borehole, the end of the pipe being adj... | 04/27/1993 |
| 5200581 | Method of coupling a seimic detector module to the wall of a borehole, and a sonde for implementing the method A sonde for acquiring seismic signals in a borehole, the sonde comprising: a detector module (30) enclosing at least one seismic sensor (G); an elongate body (21) having a lateral cavity (22) suitable for receiving the detector module (30); a resislient s... | 04/06/1993 |
| 5189262 | Advanced motor driven clamped borehole seismic receiver A borehole seismic tool including a borehole clamp which only moves perpendicular to the borehole. The clamp is driven by an electric motor, via a right angle drive. When used as a seismic receiver, the tool has a three part housing, two of which are herm... | 02/23/1993 |
| 5187332 | Coupling and recovering seismic detection sensors A seismic system is placed in a predetermined orientation with respect to a surface of a formation, and a low viscosity substance is introduced between the sensor system and the surface of the formation. The substance has a composition formulated for stif... | 02/16/1993 |
| 5170018 | Method and apparatus for tube-wave suppression A device and method for suppressing acoustic tube wave noise in a borehole. The device comprises an absorptive material that is positioned in a borehole so that the device will encounter and absorb the tube waves before the waves are detected by receivers... | 12/08/1992 |
| 5142499 | Method and apparatus for shallow water seismic operations A seismic receiver array device for shallow water and near-shore operations which is comprised of an elongated low-profile, flexible casing having a plurality of geophones and hydrophones spaced along its length, and the geophones and hydrophones are elec... | 08/25/1992 |
| 5128906 | Deep penetrating shear-wave seismic vibratory source for use in marine environments A method and apparatus for providing shear waves in a marine environment in which a shear wave source penetrates the surface sediment of a water bottom. The shear wave generating source includes an actuator/reaction mass system mounted inside a structural... | 07/07/1992 |
| 5124956 | Geophone with depth sensitive spikes A geophone configuration is disclosed that includes an elongated extension or spike that couples with the soil in the hole made by the spike in the region near the end of the spike without hard or firm coupling with the soil above that region. A bow sprin... | 06/23/1992 |
| 5111903 | Signal receiving system able to be coupled with the wall of a well or drilling A signal receiving system adapted to be lowered into a drilling and suspended from an electro-bearer cable and adapted to be coupled with walls of the drilling so as to receive signals propagating in the surrounding formations. One or more expansible cham... | 05/12/1992 |
| 5105391 | Method for high-resolution seismic recording using detectors planted at shallow depths A method for high-resolution seismic recording with increased bandwidth using detectors planted at shallow depths below the earth's surface. In one embodiment, an optimum depth where the amplitudes of high frequency signals increase relative to that of th... | 04/14/1992 |
| 5080190 | Reversible rigid coupling apparatus and method for borehole seismic transducers An apparatus and method of high resolution reverse vertical seismic profile (VSP) measurements is shown. By encapsulating the seismic detector and heaters in a meltable substance (such as wax), the seismic detector can be removably secured in a borehole i... | 01/14/1992 |
| 5060751 | Pneumatic wall-locking geophone system A seismic signal receiving system is provided for use in boreholes to receive seismic waves in carrying out geophysical investigations. The system includes three pairs of opposed plates, each of the pairs of plates including oppositely facing outer surfac... | 10/29/1991 |
| 5044461 | Decoupled borehole sensor A sensor module having tri-axial spatial sensitivity is mounted in a closed compartment of an acoustic logging tool. The sensor module is resiliently mounted with three degrees of freedom with respect to the body of the tool. The compartment includes a vo... | 09/03/1991 |
| 5044460 | Downhole seismic exploration device and apparatus A downhole seismic exploration device comprises a seismic detector such as a geophone and a magnetic clamp, supported by O-rings in an open cradle carrier which can be secured to a cable linking several such devices into an array. The array is lowered int... | 09/03/1991 |
| 5031718 | Method and apparatus for generating seismic energy in transition zones Method and apparatus for generating seismic energy in offshore areas includes energy propagating means for directing energy downwardly vertically into an earth formation. A carrier contains an elongated rigid coupler means that extends from the carrier at... | 07/16/1991 |
| 5027918 | Sidewall locking downhole seismic signal detector Apparatus for carrying and positioning seismic detector equipment down a cased borehole and which includes a three component signal detector, azimuth sensing equipment and a particular type of borehole clamping arrangement that includes a combination of s... | 07/02/1991 |
| 5018598 | Apparatus for generating seismic waves Disclosed is an apparatus for generating seismic waves in a well bore, which apparatus includes a tubular expandable and contractible outer anchor wall, a seslf-contained anchor setting hydraulic system to expand the anchor into anchored position in the b... | 05/28/1991 |
| 5010531 | Three-dimensional geophone A light weight and compact geophone assembly for detecting transient seismic signals along orthogonal axes. The geophone assembly having a plurality of geophones arranged within close proximity of each other within a compact housing. The geophones are int... | 04/23/1991 |
