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Class Information
Number: 181/102
Name: Acoustics > Geophysical or subsurface exploration > Well logging
Description: Subject matter wherein said geologic or subsurface structure includes a shaft or deep boring in the earth.










Sub-classes under this class:

Class Number Class Name Patents
181/105 Bore hole or casing condition 178
181/104 Directional source or detector 112
181/103 Programmed or timer-controlled 42
181/106 Seismic wave generation 254


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8682587 Method and apparatus for determining the permeability of earth formations Mar. 25, 2014
8611183 Measuring standoff and borehole geometry Dec. 17, 2013
8526269 Methods and systems for deploying seismic devices Sep. 3, 2013
8464790 Brine salinity from sound speed Jun. 18, 2013
8408355 Enclosures for containing transducers and electronics on a downhole tool Apr. 2, 2013
8400872 Seismic source which incorporates earth coupling as part of the transmitter resonance Mar. 19, 2013
8353339 Apparatus for the measuring of fluid levels and pumping of the same Jan. 15, 2013
8270251 Acoustic isolator Sep. 18, 2012
8261874 Attenuating out of band energy emitted from seismic sources Sep. 11, 2012
8256565 Enclosures for containing transducers and electronics on a downhole tool Sep. 4, 2012
8258975 Communication system for communication with and remote activation of downhole tools and devices used in association with wells for production of hydrocarbons Sep. 4, 2012
8220583 Acoustic isolator section Jul. 17, 2012
8136625 Attenuating out of band energy emitted from seismic sources Mar. 20, 2012
8125848 Acoustic logging-while-drilling tools having a hexapole source configuration and associated logging methods Feb. 28, 2012
8072840 Fracture clusters identification Dec. 6, 2011
8061470 Method and apparatus for deploying a plurality of seismic devices into a borehole and method thereof Nov. 22, 2011
8010291 Processing measurement data that involves computing a derivative of the measurement data that represents a subterranean structure Aug. 30, 2011
7997380 Low frequency acoustic attenuator Aug. 16, 2011
7970544 Method and apparatus for characterizing and estimating permeability using LWD Stoneley-wave data Jun. 28, 2011
7913806 Enclosures for containing transducers and electronics on a downhole tool Mar. 29, 2011
7911876 Method for initializing receiver channels in a cement bond logging tool Mar. 22, 2011
7889596 Method and a system for determining the position of a drill bit Feb. 15, 2011
7864629 Monopole acoustic transmitter comprising a plurality of piezoelectric discs Jan. 4, 2011
7813220 Method and apparatus for long term seismic monitoring Oct. 12, 2010
7764572 Methods and systems for acoustic waveform processing Jul. 27, 2010
7746725 Fracture clusters identification Jun. 29, 2010
7721809 Wellbore instrument module having magnetic clamp for use in cased wellbores May. 25, 2010
7694735 Sonde Apr. 13, 2010
7688673 Connector nodes for interrogating optical fiber sensor arrays Mar. 30, 2010
7681450 Casing resonant radial flexural modes in cement bond evaluation Mar. 23, 2010
7660195 Attenuation mapping apparatus, systems, and methods Feb. 9, 2010
7646674 Borehole apparatus and methods for simultaneous multimode excitation and reception to determine elastic wave velocities, elastic modulii, degree of anisotropy and elastic symmetry configuratio Jan. 12, 2010
7637161 Substrate penetrating acoustic sensor Dec. 29, 2009
RE40944 Adjustable shear valve mud pulser and controls therefor Oct. 27, 2009
7574303 Seismogram correction for absorption effects Aug. 11, 2009
7564741 Intelligent efficient servo-actuator for a downhole pulser Jul. 21, 2009
7529150 Borehole apparatus and methods for simultaneous multimode excitation and reception to determine elastic wave velocities, elastic modulii, degree of anisotropy and elastic symmetry configuratio May. 5, 2009
7500539 Method and apparatus of using crossed magnetic fields for measuring conductivity, permeability and porosity Mar. 10, 2009
7495995 Method and apparatus for investigating a borehole with a caliper Feb. 24, 2009
7492664 Method for processing acoustic reflections in array data to image near-borehole geological structure Feb. 17, 2009
7463551 Method of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications Dec. 9, 2008
7460435 Acoustic transducers for tubulars Dec. 2, 2008
7436185 Highly integrated logging tool Oct. 14, 2008
7418865 Method and apparatus for ultrasound velocity measurements in drilling fluids Sep. 2, 2008
7357030 Apparatus and methods for determining at least one characteristic of a proximate environment Apr. 15, 2008
7356411 Method for acquiring and interpreting transient electromagnetic measurements Apr. 8, 2008
7334661 Acoustic logging tool sleeve Feb. 26, 2008
7336562 Sonic logging tool including receiver and spacer structure Feb. 26, 2008
7277358 Apparatus, method and system for digitally transmitting acoustic pulse gun signals Oct. 2, 2007
7263029 System and method for acquiring seismic and micro-seismic data in deviated wellbores Aug. 28, 2007

1 2 3 4 5 6










 
 
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