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| Number | Title | Issue Date |
| 7269095 | Synchronization of seismic data acquisition systems A network distributed seismic data acquisition system comprises seismic receivers connected to remote acquisition modules, receiver lines, line tap units, base lines, a central recording system and a seismic source event generation unit synchronized to a master cloc... | 09/11/2007 |
| 7263030 | 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... | 08/28/2007 |
| 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 |
| 7193932 | 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... | 03/20/2007 |
| 7142480 | 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... | 11/28/2006 |
| 7012853 | Seismic data acquisition apparatus and method The present invention provides a method and apparatus of acquiring and processing seismic data. One or more controllers are each coupled to seismic sensors and to each other to form a network of data acquisition units. A main controller is coupled to a crossline uni... | 03/14/2006 |
| 6982925 | Fiber-optic seismic array telemetry, system, and method A method and system for interrogating a seismic sensor in a seismic cable having modular sensing stations spaced along the seismic cable and a connection module head end of the sensor sections, that includes dropping, at the connection modules, a wavelength of light... | 01/03/2006 |
| 6957147 | Data management for seismic acquisition using variable compression ratio as a function of background noise A seismic data acquisition unit includes a data acquisition and digital circuit which receives an analog seismic signal and digitizes the signal. The digitized seismic data uses data telemetry and a repeater device to receive the compressed data and transmit the com... | 10/18/2005 |
| 6932185 | Acquisition method and device for seismic exploration of a geologic formation by permanent receivers set on the sea bottom A method and device for seismic exploration of a subsea geologic formation by pickups set on the sea bottom and intermittently connectable to active data acquisition stations (11) brought nearby. Permanent passive reception stations (1) comprising a he... | 08/23/2005 |
| 6850461 | Fiber-optic seismic array telemetry, system, and method An apparatus, system, and method are provided for interrogating of optical seismic sensors in a seismic cable. According to various example embodiments of the invention, distribution, return, and amplification of optical signals is performed near sensors for improve... | 02/01/2005 |
| 6002641 | Apparatus and method for planting seismic sensors An apparatus and method are provided for ensuring good coupling and vertically planting of seismic receivers while substantially reducing the need for interconnecting wires and costly surveys. The apparatus includes an acquisition unit (AU) 20 for measuri... | 12/14/1999 |
| 5387907 | High data rate wireline telemetry system In a well logging tool forming a data stream for telemetry to the surface, an encoding system is located downhole cooperative with surface located decoding equipment. The encoder converts serial data into NRZ symbols, then duobinary code of seven levels a... | 02/07/1995 |
| 5089995 | Switching system for the acquisition of seismic data A seismic recording system comprises a multichannel recorder connected to a cable formed from a plurality of signal conductors. Each of the signal conductors is connected to a different channel of the recorder. The cable has a plurality of takeouts locate... | 02/18/1992 |
| 5077698 | Method and device for the high-rate transmission of data following a quasi-asynchronous mode Method and device for the high-rate transmission of data between a multiplicity of acquisition apparatuses (Ai) and a central station to which they are connected by a common transmission channel (V1) for commands and by a high-rate transmission channel (V... | 12/31/1991 |
| 4967400 | Digital marine seismic system A digital marine seismic system employes a plurality of data acquisition control modules which simultaneously digitize analog seismic signals. The control modules also are selectably addressable in that each module is uniquely programmed to respond only t... | 10/30/1990 |
| 4663744 | Real time seismic telemetry system A real time seismic telemetry system includes a central station (10) for communication with a plurality of remote data acquistion units (14). The command station (10) has a command unit (34) for controlling the operation of a transmitter (40) for providin... | 05/05/1987 |
| 4635237 | Data transmission system for seismic streamers Transmitting information from a central receiver and recorder utilizes plural series-connected transmission modules, each connected to a respective data acquisition unit. The transmission modules are sequentially connected along plural transmission lines,... | 01/06/1987 |
| 4631536 | Multiplex submersible pump telemetry system A submersible well pump has a system for monitoring parameters such as pressure and temperature in the vicinity of the motor. The system includes a downhole assembly in the well that has a transmitter for generating a carrier signal and superimposing that... | 12/23/1986 |
| 4583206 | Device for the sequential transmission of signals by radio or by cable, between a central control system and data acquisition apparatuses Device for the sequential transmission of signals by radio or by cable between a central control and recording station and local data acquisition apparatuses, comprising cables connecting said data acquisition apparatuses to the central station and radio ... | 04/15/1986 |
| 4559620 | Mass memory system addressing circuit The interface between a computer and a solid state mass memory is provided by an electronic circuit wherein data is rearranged. Data may be received in multiplexed or unmultiplexed form. The disclosed electronic circuit assigns address locations using thr... | 12/17/1985 |
| 4497045 | Seismic system with signal multiplexers A cable system for carrying out seismic operations, comprising a multi-conductor cable built with multiple segments, each segment terminated with identical connector plugs. Each segment having a selected number P of take-outs for accepting P seismic signa... | 01/29/1985 |
| 4442511 | Digital output telemetering system for recording seismic signals The digital output telemetering system for recording seismic signals comprises, according to the invention, a seismic channels commutator connected to an instantaneous automatic gain controller whose outputs are connected to an input of an analog memory a... | 04/10/1984 |
| 4360729 | Seismic cable connector with optical transceiver A seismic cable connector is provided for use with a dual fiber cable in a fiber optic seismic exploration system. The connector contains a digital transceiver which includes an optical detector connected to one fiber of the cable and a fiber optic transm... | 11/23/1982 |
| 4301521 | Method and apparatus for data acquisition and transport A data acquisition and transport system including a plurality of array terminals, each array terminal having a plurality of geophones delivering analog signals thereto, the analog signals being digitized to 1-bit and temporarily stored, and on demand, tra... | 11/17/1981 |
| 4280201 | Variable gap roll along switching A seismic prospecting roll along switching system using a relatively small number of switches to provide roll along prospecting while also providing variable gapping with minimum loss of active channels. In a simple form two sets of switches are provided ... | 07/21/1981 |
| 4072923 | Multichannel seismic telemeter system and array former It is a purpose of this invention to dispose a large number, such as 500, of elemental seismic sensor units over the earth's surface in a desired pattern. The sensors are arranged preferably in a linear pattern, at increasing distances, remotely with resp... | 02/07/1978 |
