| |
 |
|
Class Information
Number: 73/152.46
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > During drilling > Downhole measurement
Description: Subject matter wherein the apparatus for the 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 |
| 7594434 |
Downhole tool system and method for use of same |
Sep. 29, 2009 |
| 7584808 |
Centralizer-based survey and navigation device and method |
Sep. 8, 2009 |
| 7571643 |
Apparatus and method for downhole dynamics measurements |
Aug. 11, 2009 |
| 7558157 |
Sensor synchronization using embedded atomic clocks |
Jul. 7, 2009 |
| 7555391 |
Multiple distributed force measurements |
Jun. 30, 2009 |
| 7546209 |
Formation dip geo-steering method |
Jun. 9, 2009 |
| 7392697 |
Apparatus for downhole fluids analysis utilizing micro electro mechanical system (MEMS) or other sensors |
Jul. 1, 2008 |
| 7389828 |
Apparatus and method for mechanical caliper measurements during drilling and logging-while-drilling operations |
Jun. 24, 2008 |
| 7377169 |
Apparatus and methods for acoustically determining fluid properties while sampling |
May. 27, 2008 |
| 7327145 |
Azimuthally focused electromagnetic measurement tool |
Feb. 5, 2008 |
| 7299884 |
Seismic measurements while drilling |
Nov. 27, 2007 |
| 7278480 |
Apparatus and method for sensing downhole parameters |
Oct. 9, 2007 |
| 7243719 |
Control method for downhole steering tool |
Jul. 17, 2007 |
| 7233150 |
While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics |
Jun. 19, 2007 |
| 7207216 |
Hydraulic and mechanical noise isolation for improved formation testing |
Apr. 24, 2007 |
| 7178608 |
While drilling system and method |
Feb. 20, 2007 |
| 7178607 |
While drilling system and method |
Feb. 20, 2007 |
| 7150188 |
Non-invasive measurement of fluid-pressure diffusivity using electro-osmosis |
Dec. 19, 2006 |
| 7136795 |
Control method for use with a steerable drilling system |
Nov. 14, 2006 |
| 7096976 |
Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
Aug. 29, 2006 |
| 7093674 |
Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
Aug. 22, 2006 |
| 7082821 |
Method and apparatus for detecting torsional vibration with a downhole pressure sensor |
Aug. 1, 2006 |
| 7062959 |
Method and apparatus for determining downhole pressures during a drilling operation |
Jun. 20, 2006 |
| 7059180 |
Water cut rate of change analytic method |
Jun. 13, 2006 |
| 7013724 |
Method for characterizing parameters of wells, well bottom zone and formation, and device for carrying out said method |
Mar. 21, 2006 |
| 6976392 |
Atomic clock for downhole applications |
Dec. 20, 2005 |
| 6968735 |
Long range data transmitter for horizontal directional drilling |
Nov. 29, 2005 |
| 6957580 |
System and method for measurements of depth and velocity of instrumentation within a wellbore |
Oct. 25, 2005 |
| 6943697 |
Reservoir management system and method |
Sep. 13, 2005 |
| 6923052 |
Methods to detect formation pressure |
Aug. 2, 2005 |
| 6915875 |
Acoustic isolator for downhole applications |
Jul. 12, 2005 |
| 6915686 |
Downhole sub for instrumentation |
Jul. 12, 2005 |
| 6845563 |
Method and device for the measurement of the drift of a borchole |
Jan. 25, 2005 |
| 6843119 |
Apparatus for measuring and recording data from boreholes |
Jan. 18, 2005 |
| 6843117 |
Method and apparatus for determining downhole pressures during a drilling operation |
Jan. 18, 2005 |
| 6837105 |
Atomic clock for downhole applications |
Jan. 4, 2005 |
| 6766854 |
Well-bore sensor apparatus and method |
Jul. 27, 2004 |
| 6712139 |
Method of well casing cathodic protection optimization using the drill stem data |
Mar. 30, 2004 |
| 6693553 |
Reservoir management system and method |
Feb. 17, 2004 |
| 6681633 |
Spectral power ratio method and system for detecting drill bit failure and signaling surface operator |
Jan. 27, 2004 |
| 6671057 |
Gravity and differential gravity sensor, and system and method for monitoring reservoirs using same |
Dec. 30, 2003 |
| 6581454 |
Apparatus for measurement |
Jun. 24, 2003 |
| 6581453 |
Method and apparatus for detecting and localizing unwanted matter internally in a pipe string |
Jun. 24, 2003 |
| 6575244 |
System for controlling the operating pressures within a subterranean borehole |
Jun. 10, 2003 |
| 6564883 |
Rib-mounted logging-while-drilling (LWD) sensors |
May. 20, 2003 |
| 6550321 |
Apparatus for measuring and recording data from boreholes |
Apr. 22, 2003 |
| 6550322 |
Hydraulic strain sensor |
Apr. 22, 2003 |
| 6547016 |
Apparatus for measuring weight and torque on drill bit operating in a well |
Apr. 15, 2003 |
| 6539780 |
Self-compensating tensiometer and method |
Apr. 1, 2003 |
| 6502456 |
Method and apparatus for measuring multiple parameters of steam |
Jan. 7, 2003 |
|
|
|
