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Class Information
Number: 73/152.33
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Fluid flow measuring or fluid analysis > Rate of fluid flow > Thermal
Description: Subject matter wherein the determination of the physical characteristic of the borehole, the casing, or the drill rigging is made by measuring an effect of the rate of flow fluid upon temperature.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7536905 |
System and method for determining a flow profile in a deviated injection well |
May. 26, 2009 |
| 7430903 |
Fluid flow measurement using optical fibres |
Oct. 7, 2008 |
| 7412881 |
Fluid flowrate determination |
Aug. 19, 2008 |
| 7409858 |
Method for monitoring fluid properties |
Aug. 12, 2008 |
| 7017650 |
Earth loop energy systems |
Mar. 28, 2006 |
| 6769805 |
Method of using a heater with a fiber optic string in a wellbore |
Aug. 3, 2004 |
| 6751556 |
Technique and system for measuring a characteristic in a subterranean well |
Jun. 15, 2004 |
| 6702017 |
Apparatus and method for well fluid sampling |
Mar. 9, 2004 |
| 6618677 |
Method and apparatus for determining flow rates |
Sep. 9, 2003 |
| 6585036 |
Energy systems |
Jul. 1, 2003 |
| 6540021 |
Method for detecting inflow of fluid in a well while drilling and implementing device |
Apr. 1, 2003 |
| 6497279 |
Method of using a heater with a fiber optic string in a wellbore |
Dec. 24, 2002 |
| 6474176 |
Fluid flow measuring devices and methods for determining fluid flow rates in soils |
Nov. 5, 2002 |
| 6276438 |
Energy systems |
Aug. 21, 2001 |
| 6076398 |
Method for measuring of flow and flowmeter |
Jun. 20, 2000 |
| 5661236 |
Pad production log tool |
Aug. 26, 1997 |
| 5631413 |
Fluid holdup tool and flow meter for deviated wells |
May. 20, 1997 |
| 5509474 |
Temperature logging for flow outside casing of wells |
Apr. 23, 1996 |
| 5226333 |
Deep-well thermal flowmeter |
Jul. 13, 1993 |
| 4520666 |
Methods and apparatus for determining flow characteristics of a fluid in a well from temperature measurements |
Jun. 4, 1985 |
| 4435978 |
Hot wire anemometer flow meter |
Mar. 13, 1984 |
| 4420974 |
In-situ measurement system |
Dec. 20, 1983 |
| 3975941 |
Oil well rate metering method |
Aug. 24, 1976 |
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