| |
 |
|
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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7252174 |
Downhole seismic-sonic receiver |
Aug. 7, 2007 |
| 7216737 |
Acoustic isolator between downhole transmitters and receivers |
May. 15, 2007 |
| 7046165 |
Method for collecting geological data ahead of a drill bit |
May. 16, 2006 |
| 7032707 |
Acoustic isolator downhole applications |
Apr. 25, 2006 |
| 7028806 |
Acoustic isolator for downhole applications |
Apr. 18, 2006 |
| 7020045 |
Block and module for seismic sources and sensors |
Mar. 28, 2006 |
| 7012852 |
Method, apparatus and system for detecting seismic waves in a borehole |
Mar. 14, 2006 |
| 6981550 |
Sonde |
Jan. 3, 2006 |
| 6973993 |
Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same |
Dec. 13, 2005 |
| 6956791 |
Apparatus for receiving downhole acoustic signals |
Oct. 18, 2005 |
| 6930616 |
Method and apparatus for LWD shear velocity measurement |
Aug. 16, 2005 |
| 6915875 |
Acoustic isolator for downhole applications |
Jul. 12, 2005 |
| 6899197 |
Method and apparatus for absorbing acoustic energy |
May. 31, 2005 |
| 6883638 |
Accelerometer transducer used for seismic recording |
Apr. 26, 2005 |
| 6868035 |
Method and apparatus for coupling seismic sensors to a borehole wall |
Mar. 15, 2005 |
| 6834743 |
Wideband isolator for acoustic tools |
Dec. 28, 2004 |
| 6820716 |
Acoustic isolator for well logging system |
Nov. 23, 2004 |
| 6791469 |
Method of drilling in response to looking ahead of the bit |
Sep. 14, 2004 |
| 6776255 |
Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same |
Aug. 17, 2004 |
| 6747914 |
Use of minor borehole obstructions as seismic sources |
Jun. 8, 2004 |
| 6739423 |
Acoustic logging tool |
May. 25, 2004 |
| 6728165 |
Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors |
Apr. 27, 2004 |
| 6712141 |
Method and apparatus for deployment, mounting and coupling of downhole geophones |
Mar. 30, 2004 |
| 6705425 |
Regenerative combustion device |
Mar. 16, 2004 |
| 6670813 |
Integrated borehole system for reservoir detection and monitoring |
Dec. 30, 2003 |
| 6662899 |
Use of autonomous moveable obstructions as seismic sources |
Dec. 16, 2003 |
| 6643221 |
Structures and methods for damping tool waves particularly for acoustic logging tools |
Nov. 4, 2003 |
| 6619423 |
Measuring device for measuring the elastic properties of a surface structure |
Sep. 16, 2003 |
| 6615949 |
Acoustic isolator for downhole applications |
Sep. 9, 2003 |
| 6588267 |
Isolator bar for acoustic instruments used in downhole formations |
Jul. 8, 2003 |
| 6588542 |
Borehole tool actuating mechanism |
Jul. 8, 2003 |
| 6568501 |
Receiver array using tubing conveyed packer elements |
May. 27, 2003 |
| 6564899 |
Method and apparatus for absorbing acoustic energy |
May. 20, 2003 |
|
|
|
