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Class Information
Number: 367/33
Name: Communications, electrical: acoustic wave systems and devices > Seismic prospecting > Well logging > Depth recording or control
Description: Subject matter wherein an electric signal representing the location of the detector in the passageway is recorded or utilized by the system.

Patents under this class:
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Patent Number Title Of Patent Date Issued
7814970 Downhole tool delivery system Oct. 19, 2010
7784538 Using an acoustic ping and sonic velocity to control an artificial lift device Aug. 31, 2010
7668042 Method for obtaining a seismic wavelet using seismic data and well logs in a deviated well Feb. 23, 2010
7663968 Method of processing geological data Feb. 16, 2010
7433786 Method of estimating geological formation depths by converting interpreted seismic horizons the time domain to the depth domain Oct. 7, 2008
7424928 Apparatus, system and method for flexibly coupling sensors to a downhole tool Sep. 16, 2008
7411864 Method for processing signals in a cement bong logging tool Aug. 12, 2008
7346454 Method and apparatus for improved depth matching of borehole images or core images Mar. 18, 2008
7196634 Systems for predicting earthquakes and methods of employing such systems Mar. 27, 2007
6942043 Modular design for LWD/MWD collars Sep. 13, 2005
6870482 Systems for predicting earthquakes and methods of employing such systems Mar. 22, 2005
6782322 Method, apparatus and computer program product for creating ream section from memory data based on real-time reaming Aug. 24, 2004
6739692 Ink jet recording apparatus May. 25, 2004
6477112 Method for enhancing resolution of earth formation elastic-wave velocities by isolating a wave event and matching it for all receiver combinations on an acoustic-array logging tool Nov. 5, 2002
6386026 Cuttings sample catcher and method of use May. 14, 2002
6091669 Method of determining, displaying and using the relative changes of elastic modulus and density of underground rock Jul. 18, 2000
5680906 Method for real time location of deep boreholes while drilling Oct. 28, 1997
5541587 System for determining the true depth of an electrical logging tool within a wellbore Jul. 30, 1996
5511037 Comprehensive method of processing measurement while drilling data from one or more sensors Apr. 23, 1996
5388044 Dipmeter processing technique Feb. 7, 1995
5321982 Method for measuring the rate of penetration of an equipment progressing in a well Jun. 21, 1994
5285388 Detection of fluid reflection for echo sounding operation Feb. 8, 1994
H1289 Borehole televiewer system depth monitoring and recording system Feb. 1, 1994
5130949 Geopressure analysis system Jul. 14, 1992
5117399 Data processing and display for echo sounding data May. 26, 1992
5051962 Computerized truck instrumentation system Sep. 24, 1991
5038378 Method and apparatus for smoothing measurements and detecting boundaries of features Aug. 6, 1991
5005159 Continuity logging using differenced signal detection Apr. 2, 1991
4870627 Method and apparatus for detecting and evaluating borehole wall fractures Sep. 26, 1989
4862424 Interferometric means and method for accurate determination of fiberoptic well logging cable length Aug. 29, 1989
4862425 Device for acquiring seismic data in a borehole and transmission thereof to a central control and recording system Aug. 29, 1989
4809239 Method for evaluating parameters related to the elastic properties of subsurface earth formations Feb. 28, 1989
4803479 Electrical phase measurement means and method for accurate determination of well logging cable length Feb. 7, 1989
4800981 Stabilized reference geophone system for use in downhole environment Jan. 31, 1989
4791619 Method of detecting and characterizing features in a borehole Dec. 13, 1988
4683556 Method for identifying arrival times of waveforms on acoustic borehole well logs Jul. 28, 1987
4610005 Video borehole depth measuring system Sep. 2, 1986
4587641 Downhole fracture analysis May. 6, 1986
4586137 Method for generating variable well logging data composites Apr. 29, 1986
4575831 Method and apparatus for acquiring seismic signals in a borehole Mar. 11, 1986
4563757 Method and apparatus for acquiring seismic signals in a borehole Jan. 7, 1986
4556884 Depth dependent multiple logging system Dec. 3, 1985
4543648 Shot to shot processing for measuring a characteristic of earth formations from inside a borehole Sep. 24, 1985
4495605 Method for determining the dip angle of geological formations traversed by a borehole Jan. 22, 1985
4460059 Method and system for seismic continuous bit positioning Jul. 17, 1984
4450539 Apparatus for measuring the relative position of a downhole tool in a bore hole May. 22, 1984
4428072 Seismic well log display method and apparatus Jan. 24, 1984
4414656 Well logging system for mapping structural and sedimentary dips of underground earth formations Nov. 8, 1983
4398272 Computerized truck instrumentation system Aug. 9, 1983
4355378 Logging system depth recorder Oct. 19, 1982

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