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Class Information
Number: 73/152.61
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Pump test
Description: Subject matter comprising an apparatus or a method for determining a physical characteristic of a pump used (a) for circulating a fluid in a borehole or (b) for circulating a fluid in a drilling operation.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7500390 |
Method for estimating pump efficiency |
Mar. 10, 2009 |
| 6857474 |
Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons |
Feb. 22, 2005 |
| 6532839 |
Apparatus for the remote measurement of physical parameters |
Mar. 18, 2003 |
| 5823262 |
Coriolis pump-off controller |
Oct. 20, 1998 |
| 5654504 |
Downhole pump monitoring system |
Aug. 5, 1997 |
| 5309761 |
Methods and apparatus for measuring the erodability of drilling fluid deposits |
May. 10, 1994 |
| 5184507 |
Surface hydraulic pump/well performance analysis method |
Feb. 9, 1993 |
| 5167490 |
Method of calibrating a well pumpoff controller |
Dec. 1, 1992 |
| 5159832 |
Indicating device |
Nov. 3, 1992 |
| RE33690 |
Level sensor |
Sep. 17, 1991 |
| 4947936 |
Well unit dynamometer installation means and method |
Aug. 14, 1990 |
| 4932253 |
Rod mounted load cell |
Jun. 12, 1990 |
| 4873635 |
Pump-off control |
Oct. 10, 1989 |
| 4854164 |
Rod pump optimization system |
Aug. 8, 1989 |
| 4747451 |
Level sensor |
May. 31, 1988 |
| 4741208 |
Pump differential pressure monitor system |
May. 3, 1988 |
| 4672845 |
Polish rod temperature sensing system and rod stroking control |
Jun. 16, 1987 |
| 4661751 |
Well pump control system |
Apr. 28, 1987 |
| 4644785 |
Hinged strain cell mounting apparatus |
Feb. 24, 1987 |
| 4631954 |
Apparatus for controlling a pumpjack prime mover |
Dec. 30, 1986 |
| 4620189 |
Parameter telemetering from the bottom of a deep borehole |
Oct. 28, 1986 |
| 4583915 |
Pump-off controller |
Apr. 22, 1986 |
| 4576041 |
Dynamic balancing means for an oil well pumping unit |
Mar. 18, 1986 |
| 4561299 |
Apparatus for detecting changes in inclination or acceleration |
Dec. 31, 1985 |
| 4541274 |
Apparatus and method for monitoring and controlling a pump system for a well |
Sep. 17, 1985 |
| 4509365 |
Method and apparatus for weighing a sucker-rod pumped well |
Apr. 9, 1985 |
| 4507055 |
System for automatically controlling intermittent pumping of a well |
Mar. 26, 1985 |
| 4492115 |
Method and apparatus for measuring defects in ferromagnetic tubing |
Jan. 8, 1985 |
| 4487061 |
Method and apparatus for detecting well pump-off |
Dec. 11, 1984 |
| 4430892 |
Pressure loss identifying apparatus and method for a drilling mud system |
Feb. 14, 1984 |
| 4389164 |
Automatic liquid level controller |
Jun. 21, 1983 |
| 4365506 |
Remotely operated downhole test disconnect switching apparatus |
Dec. 28, 1982 |
| 4311047 |
Fluid presence detector |
Jan. 19, 1982 |
| 4143546 |
Sucker rod pump dynamometer |
Mar. 13, 1979 |
| 4129037 |
Apparatus for wear detection |
Dec. 12, 1978 |
| 4107987 |
Geothermal well pump performance sensing system and monitor therefor |
Aug. 22, 1978 |
| 4090405 |
Polished rod load transducer |
May. 23, 1978 |
| 4058757 |
Well pump-off controller |
Nov. 15, 1977 |
| 4034808 |
Method for pump-off detection |
Jul. 12, 1977 |
| 4023136 |
Borehole telemetry system |
May. 10, 1977 |
| 4015469 |
Pump-off monitor for rod pump wells |
Apr. 5, 1977 |
| 4000645 |
Apparatus for pneumatically monitoring conditions of a well circulating system |
Jan. 4, 1977 |
| 3965736 |
Clamp-on transducer for well unit |
Jun. 29, 1976 |
| 3951209 |
Method for determining the pump-off of a well |
Apr. 20, 1976 |
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