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Class Information
Number: 73/152.21
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Fluid flow measuring or fluid analysis > During drilling > Rate of fluid flow
Description: Subject matter wherein the determination of the characteristic of the borehole, the casing, or the drill rigging is made by measuring a speed of flow, a volume rate of fluid flow, or a mass rate of fluid flow.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7475593 |
High temperature near infrared for measurements and telemetry in well boreholes |
Jan. 13, 2009 |
| 7367411 |
Drilling system and method |
May. 6, 2008 |
| 7278496 |
Drilling system and method |
Oct. 9, 2007 |
| 7222681 |
Programming method for controlling a downhole steering tool |
May. 29, 2007 |
| 7044237 |
Drilling system and method |
May. 16, 2006 |
| 6820702 |
Automated method and system for recognizing well control events |
Nov. 23, 2004 |
| 6510270 |
Sub-oceanic cable network system and method |
Jan. 21, 2003 |
| 6410862 |
Device and method for measuring the flow rate of drill cuttings |
Jun. 25, 2002 |
| 6305216 |
Method and apparatus for predicting the fluid characteristics in a well hole |
Oct. 23, 2001 |
| 6286367 |
Method of evaluating the effluent of a hydrocarbon well by means of a multiphase flowmeter, and installation implementing the same |
Sep. 11, 2001 |
| 6234250 |
Real time wellbore pit volume monitoring system and method |
May. 22, 2001 |
| 6216532 |
Gas flow rate measurement |
Apr. 17, 2001 |
| 6058771 |
Determination of fluid influx or efflux |
May. 9, 2000 |
| 5975219 |
Method for controlling entry of a drillstem into a wellbore to minimize surge pressure |
Nov. 2, 1999 |
| 5736637 |
Downhole multiphase flow sensor |
Apr. 7, 1998 |
| 5654504 |
Downhole pump monitoring system |
Aug. 5, 1997 |
| 5631413 |
Fluid holdup tool and flow meter for deviated wells |
May. 20, 1997 |
| 5309761 |
Methods and apparatus for measuring the erodability of drilling fluid deposits |
May. 10, 1994 |
| 5303582 |
Pressure-transient testing while drilling |
Apr. 19, 1994 |
| 5205165 |
Method for determining fluid influx or loss in drilling from floating rigs |
Apr. 27, 1993 |
| 5181419 |
Sampling of drilling mud |
Jan. 26, 1993 |
| 5168932 |
Detecting outflow or inflow of fluid in a wellbore |
Dec. 8, 1992 |
| 5070949 |
Method of analyzing fluid influxes in hydrocarbon wells |
Dec. 10, 1991 |
| 5063776 |
Method and system for measurement of fluid flow in a drilling rig return line |
Nov. 12, 1991 |
| 5018589 |
Process for finding the depth of a lost return zone |
May. 28, 1991 |
| 4980642 |
Detection of influx of fluids invading a borehole |
Dec. 25, 1990 |
| 4941951 |
Method for improving a drilling process by characterizing the hydraulics of the drilling system |
Jul. 17, 1990 |
| 4840061 |
Method of detecting a fluid influx which could lead to a blow-out during the drilling of a borehole |
Jun. 20, 1989 |
| 4754641 |
Method and apparatus for measurement of fluid flow in a drilling rig return line |
Jul. 5, 1988 |
| 4703664 |
Fluid flow measurement system sensor mounting block |
Nov. 3, 1987 |
| 4610161 |
Method and apparatus for determining fluid circulation conditions in well drilling operations |
Sep. 9, 1986 |
| 4553429 |
Method and apparatus for monitoring fluid flow between a borehole and the surrounding formations in the course of drilling operations |
Nov. 19, 1985 |
| 4532812 |
Parametric acoustic flow meter |
Aug. 6, 1985 |
| 4527425 |
System for detecting blow out and lost circulation in a borehole |
Jul. 9, 1985 |
| 4440239 |
Method and apparatus for controlling the flow of drilling fluid in a wellbore |
Apr. 3, 1984 |
| 4430892 |
Pressure loss identifying apparatus and method for a drilling mud system |
Feb. 14, 1984 |
| 4282939 |
Method and apparatus for compensating well control instrumentation for the effects of vessel heave |
Aug. 11, 1981 |
| 4282939 |
Method and apparatus for compensating well control instrumentation for the effects of vessel heave |
Aug. 11, 1981 |
| 4040666 |
Apparatus and method of shield excavation |
Aug. 9, 1977 |
| 4000645 |
Apparatus for pneumatically monitoring conditions of a well circulating system |
Jan. 4, 1977 |
| 3976148 |
Method and apparatus for determining onboard a heaving vessel the flow rate of drilling fluid flowing out of a wellhole and into a telescoping marine riser connecting between the wellhouse and |
Aug. 24, 1976 |
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