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Class Information
Number: 181/105
Name: Acoustics > Geophysical or subsurface exploration > Well logging > Bore hole or casing condition
Description: Subject matter for investigating physical conditions of well bores and casings, such as obstructions, bore surfaces, etc.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7525872 |
Method and apparatus for cement bond evaluation using transversely polarized shear waves |
Apr. 28, 2009 |
| 7522471 |
Multimode acoustic imaging in cased wells |
Apr. 21, 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 |
| 7460435 |
Acoustic transducers for tubulars |
Dec. 2, 2008 |
| 7457194 |
Discriminating natural fracture- and stress-induced sonic anisotropy using a combination of image and sonic logs |
Nov. 25, 2008 |
| 7414918 |
Method for normalizing signals in a cement bond logging tool |
Aug. 19, 2008 |
| 7219762 |
Method and apparatus for acoustic detection of a fluid leak behind a casing of a borehole |
May. 22, 2007 |
| 7178627 |
Methods for use in detecting seismic waves in a borehole |
Feb. 20, 2007 |
| 7149146 |
Determination of the impedance of a material behind a casing combining two sets of ultrasonic measurements |
Dec. 12, 2006 |
| 7048089 |
Methods and apparatus for use in detecting seismic waves in a borehole |
May. 23, 2006 |
| 7046165 |
Method for collecting geological data ahead of a drill bit |
May. 16, 2006 |
| 7012852 |
Method, apparatus and system for detecting seismic waves in a borehole |
Mar. 14, 2006 |
| 6985086 |
Method and apparatus for LWD shear velocity measurement |
Jan. 10, 2006 |
| 6973993 |
Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same |
Dec. 13, 2005 |
| 6951262 |
Method and apparatus for suppressing waves in a borehole |
Oct. 4, 2005 |
| 6909666 |
Method and apparatus for generating acoustic signals for LWD shear velocity measurement |
Jun. 21, 2005 |
| 6891777 |
Subsurface borehole evaluation and downhole tool position determination methods |
May. 10, 2005 |
| 6850462 |
Memory cement bond logging apparatus and method |
Feb. 1, 2005 |
| 6850168 |
Method and apparatus for LWD shear velocity measurement |
Feb. 1, 2005 |
| 6837332 |
Method and apparatus for cancellation of unwanted signals in MWD acoustic tools |
Jan. 4, 2005 |
| 6834743 |
Wideband isolator for acoustic tools |
Dec. 28, 2004 |
| 6814179 |
Seismic sensing apparatus and method with high-g shock isolation |
Nov. 9, 2004 |
| 6782970 |
Acoustic source using a shaftless electrical hammer |
Aug. 31, 2004 |
| 6776255 |
Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same |
Aug. 17, 2004 |
| 6739423 |
Acoustic logging tool |
May. 25, 2004 |
| 6702010 |
Apparatus and method for actuating arms |
Mar. 9, 2004 |
| 6631783 |
Mapping reservoir characteristics using earth's nonlinearity as a seismic attribute |
Oct. 14, 2003 |
| 6619423 |
Measuring device for measuring the elastic properties of a surface structure |
Sep. 16, 2003 |
| 6618322 |
Method and apparatus for measuring acoustic mud velocity and acoustic caliper |
Sep. 9, 2003 |
| 6588542 |
Borehole tool actuating mechanism |
Jul. 8, 2003 |
| 6513591 |
Leak detection method |
Feb. 4, 2003 |
| 6466513 |
Acoustic sensor assembly |
Oct. 15, 2002 |
| 6456566 |
Use of minor borehole obstructions as seismic sources |
Sep. 24, 2002 |
| 6419044 |
Energy source for use in seismic acquisitions |
Jul. 16, 2002 |
| 6315075 |
Borehole logging tool with anchoring mechanism |
Nov. 13, 2001 |
| 6208586 |
Method and apparatus for communicating data in a wellbore and for detecting the influx of gas |
Mar. 27, 2001 |
| 6189383 |
Method and apparatus for acoustic logging of fluid density and wet cement plugs in boreholes |
Feb. 20, 2001 |
| 6181642 |
Apparatus and method for borehole seismic exploration |
Jan. 30, 2001 |
| 6131694 |
Vertical seismic profiling in a drilling tool |
Oct. 17, 2000 |
| 6021093 |
Transducer configuration having a multiple viewing position feature |
Feb. 1, 2000 |
| 6018496 |
Method and apparatus for hydraulic isolation determination |
Jan. 25, 2000 |
| 5926437 |
Method and apparatus for seismic exploration |
Jul. 20, 1999 |
| 5907131 |
Method and system for cement bond evaluation high acoustic velocity formations |
May. 25, 1999 |
| 5874676 |
Method and apparatus for acoustically investigating a casing with a swept frequency pulse |
Feb. 23, 1999 |
| 5841734 |
Rotating acoustic transducer head for cement bond evaluation tool |
Nov. 24, 1998 |
| 5763773 |
Rotating multi-parameter bond tool |
Jun. 9, 1998 |
| 5726951 |
Standoff compensation for acoustic logging while drilling systems |
Mar. 10, 1998 |
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