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Class Information
Number: 73/152.49
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > During drilling > Force
Description: Subject matter wherein the determination of the physical characteristic of the borehole, the casing, or the drill rigging is made by measuring an agency or an influence that if applied to a free body results chiefly in acceleration of the body and sometimes in elastic deformation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7171851 |
Temperature compensated strain measurement |
Feb. 6, 2007 |
| 7158049 |
Wireless communication circuit |
Jan. 2, 2007 |
| 6976392 |
Atomic clock for downhole applications |
Dec. 20, 2005 |
| 6957580 |
System and method for measurements of depth and velocity of instrumentation within a wellbore |
Oct. 25, 2005 |
| 6837105 |
Atomic clock for downhole applications |
Jan. 4, 2005 |
| 6776035 |
Method and device for calibration of dual-axis tilt meter |
Aug. 17, 2004 |
| 6553825 |
Torque swivel and method of using same |
Apr. 29, 2003 |
| 6547016 |
Apparatus for measuring weight and torque on drill bit operating in a well |
Apr. 15, 2003 |
| 5833015 |
Method and apparatus for sinking pipes or cables into a pilot borehole |
Nov. 10, 1998 |
| 5272925 |
Motorized rotary swivel equipped with a dynamometric measuring unit |
Dec. 28, 1993 |
| 5245871 |
Process for controlling a drilling operation |
Sep. 21, 1993 |
| 5237863 |
Method for detecting pump-off of a rod pumped well |
Aug. 24, 1993 |
| 5205163 |
Method and apparatus for determining the torque applied to a drillstring at the surface |
Apr. 27, 1993 |
| 5109697 |
Method of exploration for hydrocarbons |
May. 5, 1992 |
| 5044198 |
Method of predicting the torque and drag in directional wells |
Sep. 3, 1991 |
| 5010765 |
Method of monitoring core sampling during borehole drilling |
Apr. 30, 1991 |
| 4976143 |
System and method for monitoring drill bit depth |
Dec. 11, 1990 |
| 4972703 |
Method of predicting the torque and drag in directional wells |
Nov. 27, 1990 |
| 4848144 |
Method of predicting the torque and drag in directional wells |
Jul. 18, 1989 |
| 4843875 |
Procedure for measuring the rate of penetration of a drill bit |
Jul. 4, 1989 |
| 4807469 |
Monitoring drilling mud circulation |
Feb. 28, 1989 |
| 4756188 |
Method and apparatus for compensating for drilling line stretch in determining equipment depth in a well and for measurement of hookload on the traveling block of a drilling rig |
Jul. 12, 1988 |
| 4748563 |
Have invented certain new and useful improvements in method and apparatus for controlling the lift travel of a mast or derrick |
May. 31, 1988 |
| 4715451 |
Measuring drillstem loading and behavior |
Dec. 29, 1987 |
| 4685329 |
Assessment of drilling conditions |
Aug. 11, 1987 |
| 4557142 |
Apparatus and method for real-time measurement of drilling fluid properties |
Dec. 10, 1985 |
| 4549431 |
Measuring torque and hook load during drilling |
Oct. 29, 1985 |
| 4548080 |
Method and apparatus for soil mechanics measurements of filter cakes |
Oct. 22, 1985 |
| 4528842 |
Method and apparatus for soil mechanics measurements of filter cakes |
Jul. 16, 1985 |
| 4512186 |
Drill rate and gas monitoring system |
Apr. 23, 1985 |
| 4510801 |
Controlled heater for drilling mud testing system |
Apr. 16, 1985 |
| 4510800 |
Drilling mud testing system having a thermally isolated pump |
Apr. 16, 1985 |
| 4501143 |
Preparation unit for a drilling mud testing system |
Feb. 26, 1985 |
| 4476715 |
Mud metering tank monitoring system |
Oct. 16, 1984 |
| 4458528 |
Stickometer |
Jul. 10, 1984 |
| 4413511 |
System for measuring cuttings and mud carryover during the drilling of a subterranean well |
Nov. 8, 1983 |
| 4408486 |
Bell nipple densitometer method and apparatus |
Oct. 11, 1983 |
| 4385666 |
Method of maintaining preset parameters of drilling mud |
May. 31, 1983 |
| 4370885 |
Method for controlling the dispersing of solids in drilling mud |
Feb. 1, 1983 |
| 4369655 |
Method of determining the concentration of solid lubricants in drilling fluids |
Jan. 25, 1983 |
| 4341115 |
Method and apparatus for monitoring structural and mechanical properties of drilling mud |
Jul. 27, 1982 |
| 4339946 |
Hydraulic depth indicator for hydraulic drilling machines |
Jul. 20, 1982 |
| 4295366 |
Drilling fluid circulating and monitoring system and method |
Oct. 20, 1981 |
| 4290305 |
Drilling fluid circulating and monitoring system and method |
Sep. 22, 1981 |
| 4285236 |
Rotary torque and rpm indicator for oil well drilling rigs |
Aug. 25, 1981 |
| 4250758 |
Combination for use in a rotary drilling system with torque meter |
Feb. 17, 1981 |
| 4202490 |
Drill pipe identification method and system |
May. 13, 1980 |
| 4201082 |
Process and equipment for determining the density of a loaded drilling fluid from a deep well, in particular an oil well |
May. 6, 1980 |
| 4030558 |
Wear determination of drilling bits |
Jun. 21, 1977 |
| 3982432 |
Well monitoring and analyzing system |
Sep. 28, 1976 |
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