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Class Information
Number: 367/25
Name: Communications, electrical: acoustic wave systems and devices > Seismic prospecting > Well logging
Description: Subject matter wherein the deflected acoustic waves are detected by means which travels through a passageway in the earth.










Sub-classes under this class:

Class Number Class Name Patents
367/28 Amplitude measurement 45
367/35 Borehole or casing condition 240
367/33 Depth recording or control 58
367/34 Received signal cycle discrimination 42
367/26 Threshold set system 32
367/27 Time interval measurement 121


Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8711655 Single well reservoir characterization apparatus and methods Apr. 29, 2014
8687460 Methods and apparatus of source control for synchronized firing of air gun arrays with receivers in a well bore in borehole seismic Apr. 1, 2014
8688382 Detection of downhole vibrations using surface data from drilling rigs Apr. 1, 2014
8681582 Method for sonic indication of formation porosity and lithology Mar. 25, 2014
8646519 Low-profile suspension of logging sensor and method Feb. 11, 2014
8605542 Detection of seismic signals using fiber optic distributed sensors Dec. 10, 2013
8600717 Production optimization for oilfields using a mixed-integer nonlinear programming model Dec. 3, 2013
8600716 Method for updating a model of the earth using microseismic measurements Dec. 3, 2013
8589079 Method and system for passive electroseismic surveying Nov. 19, 2013
8566036 Method and system for passive electroseismic surveying Oct. 22, 2013
8566037 Method and system for passive electroseismic surveying Oct. 22, 2013
8559272 Acoustic logging while drilling tool having raised transducers Oct. 15, 2013
8553493 Method for permeable zone detection Oct. 8, 2013
8553492 Seismic source controller and display system Oct. 8, 2013
8547788 Methods for making acoustic anisotropy logging while drilling measurements Oct. 1, 2013
8526269 Methods and systems for deploying seismic devices Sep. 3, 2013
8494776 Method and system for passive electroseismic surveying Jul. 23, 2013
8478533 Method and system for passive electroseismic surveying Jul. 2, 2013
8422334 System, method and computer program product for detection of seismic events from a network Apr. 16, 2013
8411529 Walkaway VSP calibrated sonic logs Apr. 2, 2013
8400872 Seismic source which incorporates earth coupling as part of the transmitter resonance Mar. 19, 2013
8369183 Analysis of fracture networks Feb. 5, 2013
8369667 Downhole cable Feb. 5, 2013
8347658 Method and system for passive electroseismic surveying Jan. 8, 2013
8339897 Automatic dispersion extraction of multiple time overlapped acoustic signals Dec. 25, 2012
8332155 System and method for hydrocarbon gas pay zone characterization in a subterranean reservoir Dec. 11, 2012
8305845 Methods and systems for seismic signal detection Nov. 6, 2012
8301383 Estimating in situ mechanical properties of sediments containing gas hydrates Oct. 30, 2012
8290711 Method of estimating the fracture density in a rock medium Oct. 16, 2012
8279713 Acoustic transmitter comprising a plurality of piezoelectric plates Oct. 2, 2012
8243549 Estimating seismic anisotropy of shales Aug. 14, 2012
8238194 Methods and systems for compressing sonic log data Aug. 7, 2012
8228758 Image generation of a wellbore Jul. 24, 2012
8223586 Method and system to determine the geo-stresses regime factor Q from borehole sonic measurement modeling Jul. 17, 2012
8199609 Multi-mode downhole acoustic source Jun. 12, 2012
8186432 Well logging fluid for ultrasonic cement bond logging May. 29, 2012
8154951 Model-based relative bearing estimation of three-component receivers Apr. 10, 2012
8130591 Downhole measurements of mud acoustic velocity Mar. 6, 2012
8125852 Methods and systems for seismic signal detection Feb. 28, 2012
8125848 Acoustic logging-while-drilling tools having a hexapole source configuration and associated logging methods Feb. 28, 2012
8121791 Spectral shaping inversion and migration of seismic data Feb. 21, 2012
8116167 Method and system for generating a beam of acoustic energy from a borehole, and applications thereof Feb. 14, 2012
8116532 Extraction of processed borehole image elements to create a combined image Feb. 14, 2012
8107316 Controlled source imbalance apparatus, systems, and methods Jan. 31, 2012
8107317 Technique and system for performing a cross well survey Jan. 31, 2012
8102732 Anisotropy measurement while drilling Jan. 24, 2012
8095318 Method for estimating formation dip using combined multiaxial induction and formation image measurements Jan. 10, 2012
8091633 Tool for locating and plugging lateral wellbores Jan. 10, 2012
8090227 Purging of fiber optic conduits in subterranean wells Jan. 3, 2012
8077546 Method for monitoring a multi-layered system Dec. 13, 2011

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