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Class Information
Number: 73/152.54
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Downhole test
Description: Subject matter wherein the apparatus for determination of the physical characteristic of the borehole, the casing, or the drill rigging is located within the borehole while the measurement is being made.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7600420 |
Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation |
Oct. 13, 2009 |
| 7594434 |
Downhole tool system and method for use of same |
Sep. 29, 2009 |
| 7516654 |
Method and apparatus for downhole detection of CO2 and H2S using resonators coated with CO2 and H2S sorbents |
Apr. 14, 2009 |
| 7478555 |
Technique and apparatus for use in well testing |
Jan. 20, 2009 |
| 7438135 |
Method of suspending, completing and working over a well |
Oct. 21, 2008 |
| 7392697 |
Apparatus for downhole fluids analysis utilizing micro electro mechanical system (MEMS) or other sensors |
Jul. 1, 2008 |
| 7363971 |
Method and apparatus for maintaining a multi-chip module at a temperature above downhole temperature |
Apr. 29, 2008 |
| 7281577 |
Downhole measurement system and method |
Oct. 16, 2007 |
| 7240546 |
Method and apparatus for downhole detection of CO2 and H2S using resonators coated with CO2 and H2S sorbents |
Jul. 10, 2007 |
| 7051587 |
Traction apparatus |
May. 30, 2006 |
| 7047653 |
Depth correction |
May. 23, 2006 |
| 6976386 |
Tensiometer methods |
Dec. 20, 2005 |
| 6971265 |
Downhole sensing apparatus with separable elements |
Dec. 6, 2005 |
| 6957580 |
System and method for measurements of depth and velocity of instrumentation within a wellbore |
Oct. 25, 2005 |
| 6941804 |
Determining the PVT properties of a hydrocarbon reservoir fluid |
Sep. 13, 2005 |
| 6943697 |
Reservoir management system and method |
Sep. 13, 2005 |
| 6928864 |
Tool assembly and monitoring applications using same |
Aug. 16, 2005 |
| 6926081 |
Methods of discovering and correcting subterranean formation integrity problems during drilling |
Aug. 9, 2005 |
| 6923252 |
Borehole sounding device with sealed depth and water level sensors |
Aug. 2, 2005 |
| 6896056 |
System and methods for detecting casing collars |
May. 24, 2005 |
| 6842990 |
Inclinometer system |
Jan. 18, 2005 |
| 6834247 |
Off-set elimination system for a vibrating gyroscope |
Dec. 21, 2004 |
| 6792798 |
Ultrasonic cylindrical resonator to facilitate bubble point pressure measurement |
Sep. 21, 2004 |
| 6776035 |
Method and device for calibration of dual-axis tilt meter |
Aug. 17, 2004 |
| 6772621 |
Tensiometer methods and apparatus |
Aug. 10, 2004 |
| 6758090 |
Method and apparatus for the detection of bubble point pressure |
Jul. 6, 2004 |
| 6691780 |
Tracking of particulate flowback in subterranean wells |
Feb. 17, 2004 |
| 6693553 |
Reservoir management system and method |
Feb. 17, 2004 |
| 6646440 |
Device for measuring shifts in mountains |
Nov. 11, 2003 |
| 6631563 |
Survey apparatus and methods for directional wellbore surveying |
Oct. 14, 2003 |
| 6614718 |
Device and method for seismic drill hole measuring |
Sep. 2, 2003 |
| 6612171 |
Gravity measuring apparatus |
Sep. 2, 2003 |
| 6581453 |
Method and apparatus for detecting and localizing unwanted matter internally in a pipe string |
Jun. 24, 2003 |
| 6581454 |
Apparatus for measurement |
Jun. 24, 2003 |
| 6550321 |
Apparatus for measuring and recording data from boreholes |
Apr. 22, 2003 |
| 6543280 |
Remote sensing and measurement of distances along a borehole |
Apr. 8, 2003 |
| 6453239 |
Method and apparatus for borehole surveying |
Sep. 17, 2002 |
| 6390194 |
Method and apparatus for multi-diameter testing of blowout preventer assemblies |
May. 21, 2002 |
| 6378363 |
Method for obtaining leak-off test and formation integrity test profiles from limited downhole pressure measurements |
Apr. 30, 2002 |
| 6237404 |
Apparatus and method for determining a drilling mode to optimize formation evaluation measurements |
May. 29, 2001 |
| 6234257 |
Deployable sensor apparatus and method |
May. 22, 2001 |
| 6209391 |
Free fall survey instrument |
Apr. 3, 2001 |
| 6158276 |
Apparatus for measuring and recording data from boreholes |
Dec. 12, 2000 |
| 6151961 |
Downhole depth correlation |
Nov. 28, 2000 |
| 6151962 |
Portable tester for downhole motors |
Nov. 28, 2000 |
| 6152225 |
Method and apparatus for multi-diameter testing of blowout preventer assemblies |
Nov. 28, 2000 |
| 5970787 |
Downhole gravity tool |
Oct. 26, 1999 |
| 5844133 |
Drilling control apparatus of rock drill |
Dec. 1, 1998 |
| 5821414 |
Survey apparatus and methods for directional wellbore wireline surveying |
Oct. 13, 1998 |
| 5808191 |
Well logging instrument string having flexibly coupled segments and a selectably operable flexible coupling therefor |
Sep. 15, 1998 |
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