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Class Information
Number: 73/152.01
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow)
Description: Subject matter comprising a process or an apparatus for determining a physical characteristic of a borehole, a casing, or a drill rigging.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7536262 |
Kalman filter approach to processing electromagnetic data |
May. 19, 2009 |
| 7513752 |
Beam pump dynamic load monitoring and methods |
Apr. 7, 2009 |
| 7478555 |
Technique and apparatus for use in well testing |
Jan. 20, 2009 |
| 7472594 |
Fluid level indication system and technique |
Jan. 6, 2009 |
| 7458258 |
Methods and apparatus for oil composition determination |
Dec. 2, 2008 |
| 7435597 |
Assays for zero-valent transition metals in sedimentary rocks using carbon monoxide with application to oil and gas exploration |
Oct. 14, 2008 |
| 7418865 |
Method and apparatus for ultrasound velocity measurements in drilling fluids |
Sep. 2, 2008 |
| 7318343 |
System for detecting gas in a wellbore during drilling |
Jan. 15, 2008 |
| 7299132 |
Method and system for pre-drill pore pressure prediction |
Nov. 20, 2007 |
| 7290443 |
Method for measuring formation properties with a time-limited formation test |
Nov. 6, 2007 |
| 7282698 |
System and method for monitoring a well |
Oct. 16, 2007 |
| 7230543 |
Downhole clock synchronization apparatus and methods for use in a borehole drilling environment |
Jun. 12, 2007 |
| 7168310 |
Accuracy of shaly sand formation evaluation |
Jan. 30, 2007 |
| 7143521 |
Determination of borehole azimuth and the azimuthal dependence of borehole parameters |
Dec. 5, 2006 |
| 7128149 |
Apparatus and methods for improved fluid displacement in subterranean formations |
Oct. 31, 2006 |
| 7114385 |
Apparatus and method for drawing fluid into a downhole tool |
Oct. 3, 2006 |
| 7103982 |
Determination of borehole azimuth and the azimuthal dependence of borehole parameters |
Sep. 12, 2006 |
| 7098802 |
Signal connection for a downhole tool string |
Aug. 29, 2006 |
| 7062072 |
Methods of producing images of underground formations surrounding a borehole |
Jun. 13, 2006 |
| 7046164 |
Method and system for well telemetry |
May. 16, 2006 |
| 7042555 |
Portable pipe tally system |
May. 9, 2006 |
| 7038455 |
Electromagnetic wave resistivity tool |
May. 2, 2006 |
| 7028543 |
System and method for monitoring performance of downhole equipment using fiber optic based sensors |
Apr. 18, 2006 |
| 6986281 |
Exfiltrometer apparatus and method for measuring unsaturated hydrologic properties in soil |
Jan. 17, 2006 |
| 6985815 |
Instantaneous spectral analysis |
Jan. 10, 2006 |
| 6910374 |
Borehole conductivity profiler |
Jun. 28, 2005 |
| 6905241 |
Determination of virgin formation temperature |
Jun. 14, 2005 |
| 6871532 |
Method and apparatus for pore pressure monitoring |
Mar. 29, 2005 |
| 6843117 |
Method and apparatus for determining downhole pressures during a drilling operation |
Jan. 18, 2005 |
| 6840097 |
Inspection apparatus for tires |
Jan. 11, 2005 |
| 6837332 |
Method and apparatus for cancellation of unwanted signals in MWD acoustic tools |
Jan. 4, 2005 |
| 6820701 |
Visual probes and methods for placing visual probes into subsurface areas |
Nov. 23, 2004 |
| RE38567 |
Apparatus and method for self adjusting downlink signal communication |
Aug. 24, 2004 |
| 6766255 |
Method of determining subsidence in a reservoir |
Jul. 20, 2004 |
| 6714873 |
System and method for estimating subsurface principal stresses from seismic reflection data |
Mar. 30, 2004 |
| 6704436 |
Method of obtaining a developed two-dimensional image of the wall of a borehole |
Mar. 9, 2004 |
| 6697298 |
High efficiency acoustic transmitting system and method |
Feb. 24, 2004 |
| 6619393 |
Method for locating oil wells |
Sep. 16, 2003 |
| 6615653 |
In situ method for determining soil liquefaction tendency and its prevention by electro-osmosis |
Sep. 9, 2003 |
| 6581453 |
Method and apparatus for detecting and localizing unwanted matter internally in a pipe string |
Jun. 24, 2003 |
| 6543280 |
Remote sensing and measurement of distances along a borehole |
Apr. 8, 2003 |
| 6526819 |
Method for analyzing a completion system |
Mar. 4, 2003 |
| 6526818 |
Seabed analysis |
Mar. 4, 2003 |
| 6502456 |
Method and apparatus for measuring multiple parameters of steam |
Jan. 7, 2003 |
| 6487893 |
Apparatus and method for pressure testing the sealing engagement of the fittings associated with the communication lines of a well tool |
Dec. 3, 2002 |
| 6439046 |
Apparatus and method for synchronized formation measurement |
Aug. 27, 2002 |
| 6427529 |
Instrument for surveying the depth and volume of oil and brine in a static fluid column of an oil well |
Aug. 6, 2002 |
| 6369339 |
Apparatus for manipulating a load |
Apr. 9, 2002 |
| 6351991 |
Determining stress parameters of formations from multi-mode velocity data |
Mar. 5, 2002 |
| 6305467 |
Wireless coiled tubing joint locator |
Oct. 23, 2001 |
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