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7286442 |
Method and apparatus for seismic data acquisition
A marine seismic exploration method and system comprised of continuous recording, self-contained ocean bottom pods characterized by low profile casings. An external bumper is provided to promote...
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6985815 |
Instantaneous spectral analysis
A method of seismic data processing is described in which a particular wavelet is selected from a plurality of wavelets as being most characteristic of a received seismic signal. A subtracted...
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5112130 |
Apparatus and method for measuring relative displacement of objects
The present invention relates to a separation measuring method and a separation measuring apparatus for measuring the separation of objects, which have been displaced relatively, by using optical...
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5047933 |
Full wave form restoration of optically digitized seismic traces
A method for digitizing seismic traces comprising optically digitizing the seismic sections to produce a digitized image, normalizing the digitized image for brightness to produce a normalized...
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4935748 |
Blast recorder and method of displaying blast energy
A blast recorder and method for monitoring and processing vibrations from blasts, and for displaying the results in a nearly real time basis and in a manner which is easily interpreted by a...
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4885724 |
Cableless seismic digital field recorder having on-site seismic data processing capabilities
An improved cableless seismic digital recording system is disclosed which records seismic-trace data generated by any type of seismic source, including high energy impulsive seismic sources, such...
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4879696 |
Method and apparatus for initiating seismic data storage in an isolated distributed recording system
An improved method and apparatus for initiating seismic data storage in an Isolated Distributed Recording System. An encoded acoustic signal is generated by an acoustic energy source which is...
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4807200 |
Method and apparatus for gathering seismic data and selectively controlling isolated distributed recorders in an isolated distributed recording system
A method and apparatus for selectively controlling isolated distributed recorders in an Isolated Distributed Recording System. Selection and control of isolated distributed recording units...
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4663743 |
Seismic data transcription system
A transcriber system for receiving previously recorded data in a first medium and outputting the data in a second medium, and which includes at least one input device for receiving the data in the...
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H000276 |
Optical time break detector
A method and apparatus for detecting the instant on explosive is detonated by way of an optical signal. A length of optical fiber has one end wrapped around or positioned near the explosive with...
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4661934 |
Ground position controller and method for automatically indicating parameters that spatially cross-reference the locations of seismic spread and source arrays during exploration for hydrocarbons and the like
The present invention relates to a ground position controller utilizing a microcomputer system interconnected to a digital field system (DFS) via a system bus, for generating, formatting and...
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4661935 |
Seismic data processing
A variable amplitude/phase color seismic display is provided which increases the ease with which interpreters can locate peaks, troughs and other information of interest.
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4639901 |
Method for testing cableless seismic digital field recorders
Test features are incorporated in an improved cableless seismic digital recording system recorder. The improved recorder facilitates application of earlier cableless seismic digital recording...
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4616320 |
Seismic strong-motion recorder
A digital recorder and method for digitizing and recording seismic events, the recorder being capable of lengthy stand-by periods during which it records lesser events of little interest in a...
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4594692 |
Seismic signal generator
A system for testing seismic signal recording equipment wherein a test signal is generated which simulates the output of at least one seismic sensing device, and, thereafter, the test signal is...
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4355379 |
Continuous automatic migration of seismic data with waveform preservation
Amplitude-versus-time information of a seismic time section is automatically migrated so that events on the time section are displaced, both vertically and horizontally, into positions on a seismic...
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4296484 |
Data display system
A display system is provided in which the data from a plurality of data channels is displayed on a cathode ray tube (CRT) display device. Automatic gain control is utilized to ensure that...
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4279026 |
Seismographic data color display
A new and improved method of forming a color graphic display from seismographic input data is disclosed. The input data sequence is processed to obtain the absolute value of each amplitude value...
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4236233 |
Interactive multidimensional classification and sorting of seismic segment data
The specification discloses a method and system wherein an operator interacts with an automatic data processing and display system to classify and sort subsurface reflective surfaces or segments in...
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4229810 |
Seismogram display and method
A novel seismogram display and method for making same are provided wherein a portion of the areas under certain ones of the positive and negative wavelet lobes of each seismic trace is shaded. Each...
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4227198 |
Seismic triggered seismograph
A seismic triggered seismograph (10) has a transducer (12) that measures particle vibration along three orthogonal axes and a microphone (14) which measures atmospheric overpressure. The four...
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4217593 |
Water depth-loran position recorder
Apparatus, for use with a chart recording fathometer, for receiving loran C time difference/line of position information and for recording that information in vertical columns on the chart in...
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RE30347 |
Corrections for seismic data obtained from expanding-spread
Seismic signals from detectors forming split spreads are utilized to correct for weathering, elevation, and the like signals from detectors forming an expanded spread. The signals of the seismic...
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4209855 |
Apparatus for controlling the transfer of seismic data from _magnetic tape storage to a photographic recording
Multiplexed seismic data representing a plurality of seismic channels intensity modulates each sweep of the electron beam of a cathode-ray tube. Each successive sweep of the electron beam is...
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4193058 |
System for displaying seismic data on a cathode-ray tube
Multiplexed seismic data representing a plurality of seismic channels intensity modulates each sweep of the electron beam of a cathode-ray tube. Each successive sweep of the electron beam is...
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4091358 |
Seismic detecting means for obtaining maximum signal enhancement
In seismic exploration of water-covered areas of the earth, a seismic cable containing seismic energy detecting means spaced along the cable is used. The detecting means are grouped into one or...
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4086600 |
Method for producing half-tone, variable-density seismic trace recordings
In a seismic data processing system, seismic data in channel-sequential format intensity modulates the electron beam of a cathode-ray tube. A photographic drum plotter provides a recording of the...
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4070187 |
Color display of data
A new and improved color display of geophysical and other scientific and industrial or similar technological data readily and quickly obtained from input data and containing color indications of...
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4063216 |
Displaying seismic sections in isometric view
The present invention provides a new and improved method of displaying a plurality of seismic sections of geophysical data on two-dimensional surface in an isometric view, while the display so...
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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...
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4017833 |
Summer for group recorder
Cableless seismic recorders employ a small, mobile amplifier-recorder in which preferentially the recorder tape contains in digital form both identification information (called header data) and the...
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4006445 |
Apparatus for and methods of seismic prospecting
In seismic prospecting a local response is achieved by striking a hammer on the ground, and the recording apparatus is arranged to be triggered by the hammer to run from a short time before the...
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3987406 |
Seismic group recorder control system
In seismic group recording, each seismic trace is initially digitally recorded by a small, portable, magnetic recorder placed near the corresponding seismometer recorder group. A large number of...
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3975705 |
Color display of geophysical and other data
A new and improved color display of geophysical and other scientific and industrial or similar technological data readily and quickly obtained from input data and containing color indications of...
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3961306 |
Method of forming color graphic displays from input data
A new and improved method of forming color graphic displays from input data is disclosed. In the displays so formed differing colors quantitatively identify and indicate differing values or ranges...
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3952283 |
Group recorder alarm
This invention concerns a status alarm for a seismometer group recorder. In using group recorders, the automatic recording feature leaves the field personnel (the user) with minimum confidence that...
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3946356 |
Synthetic display of seismic reflection strength
A synthetic display is provided, in cross-sectional form, of the theoretical strength of seismic reflections. The theoretical strength is computed from calculated inverval-velocity values and known...
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3916370 |
Apparatus for controlling the transfer of seismic data from magnetic tape storage to a photographic recording
A seismic data processing system comprises a multiplexer for applying seismic data from magnetic tape storage to a cathode-ray tube to modulate its electron beam. A photographic drum plotter...
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3886526 |
Seismic trace annotation generator
Multiplexed seismic data representing a plurality of seismic channels intensity modulates each sweep of the electron beam of a cathode-ray tube. Each successive sweep of the electron beam is...
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3806864 |
CABLELESS SEISMIC DIGITAL RECORDING SYSTEM
In cableless seismic recording, each seismic trace is digitally recorded by a separate small portable magnetic recorder placed near the corresponding seismometer group. First, out of a large number...
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3781785 |
COLOR SONAGRAMS AND METHODS FOR THEIR PRODUCTION
Seismographic signals are separated by filters into their low-, medium-, and high-frequency component signals and the envelope of each is generated and displayed in a different color, e.g., red,...
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3775738 |
SELECTIVE SEQUENTIAL INPUT SWITCHING METHOD FOR SEISMIC SURVEYING
A method of seismic data acquisition wherein a recording system may be provided with fewer recording channels as compared with the number of groups of seismic wave detectors of a seismic spread,...
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3766519 |
METHOD FOR PROCESSING SURFACE DETECTED SEISMIC DATA TO PLOTTED REPRESENTATIONS OF SUBSURFACE DIRECTIONAL SEISMIC DATA
Individual geophones of a surface array of geophones detect the arrival of energy transmitted into the earth from a seismic source and reflected from subsurface reflectors. A record of traces of...
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3698009 |
PROCESS FOR MEASURING THE SAMPLED AMPLITUDE OF A SEISMIC SIGNAL
A process for measuring the sampled amplitude of a seismic signal received by a sensing device after the said signal has travelled through a continuous medium, in which the content of an adding...
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3697939 |
CORRECTIONS FOR SEISMIC DATA OBTAINED FROM EXPANDING-SPREAD
Seismic signals from detectors forming split spreads are utilized to correct for weathering, elevation, and the like signals from detectors forming an expanded spread. The signals of the seismic...
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3683398 |
SEISMIC DATA TIME VARYING TIME SCALE DISPLAY AND PROCESS
A time varying time scale display and the process for generating same, wherein conventional seismic data recorded at a fixed sampling rate are resampled at a preselected time varying rate. A...
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3629796 |
SEISMIC HOLOGRAPHY
Apparatus and processes for seismic holography with emphasis on field procedures, recording methods, and interpretation processes. Coherent acoustical energy is transmitted into the earth and...
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3611406 |
COMBINATION VARIABLE AREA AND WIGGLE-LINE DISPLAY OF SEISMIC SIGNALS
Seismograms are represented in a combined wiggle trace and variable area display for side-by-side presentation in a seismic time or depth display. Seismic wiggle traces are sine wave...
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3588911 |
DISPLAY SYSTEM FOR SEISMIC DATA
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3460065 |
PROCESSING IDENTIFIED SEISMIC TAPE RECORDINGS
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