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Class Information
Number: 73/152.42
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Fluid flow measuring or fluid analysis > Determining relative proportion of fluid constituent
Description: Subject matter wherein the determination of the physical characteristic of the borehole, the casing, or the drill rigging is made by measuring the amount of a constituent of a fluid within the borehole or a ratio of one constituent of a fluid to another constituent of the fluid.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7530265 |
Method and apparatus for elemental analysis of a fluid downhole |
May. 12, 2009 |
| 7395704 |
Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
Jul. 8, 2008 |
| 7380598 |
Method for detecting fluid leakage from a subterranean formation |
Jun. 3, 2008 |
| 7328624 |
Probe for measuring parameters of a flowing fluid and/or multiphase mixture |
Feb. 12, 2008 |
| 7197924 |
Apparatus and method for evaluating subterranean environments |
Apr. 3, 2007 |
| 7069776 |
Method for measuring particle concentration during injection pumping operations |
Jul. 4, 2006 |
| 7059180 |
Water cut rate of change analytic method |
Jun. 13, 2006 |
| 7032662 |
Method for determining the extent of recovery of materials injected into oil wells or subsurface formations during oil and gas exploration and production |
Apr. 25, 2006 |
| 6915685 |
Tool holder for measurement means |
Jul. 12, 2005 |
| 6891606 |
Real-time on-line sensing and control of mineral scale deposition from formation fluids |
May. 10, 2005 |
| 6886632 |
Estimating formation properties in inter-well regions by monitoring saturation and salinity front arrivals |
May. 3, 2005 |
| 6840091 |
Geophysical method for quantification of dense non-aqueous phase liquids in the subsurface |
Jan. 11, 2005 |
| 6823721 |
Method and system for mass flow balance accounting |
Nov. 30, 2004 |
| 6725926 |
Method of tracking fluids produced from various zones in subterranean wells |
Apr. 27, 2004 |
| 6659175 |
Method for determining the extent of recovery of materials injected into oil wells during oil and gas exploration and production |
Dec. 9, 2003 |
| 6611763 |
Method of early predicting paraffin deposition risks during production and transport |
Aug. 26, 2003 |
| 6591673 |
Methods for identifying fluid types of underground formations |
Jul. 15, 2003 |
| 6581685 |
Method for determining formation characteristics in a perforated wellbore |
Jun. 24, 2003 |
| 6499344 |
Apparatus and method to obtain representative samples of oil well production |
Dec. 31, 2002 |
| 6427529 |
Instrument for surveying the depth and volume of oil and brine in a static fluid column of an oil well |
Aug. 6, 2002 |
| 6328103 |
Methods and apparatus for downhole completion cleanup |
Dec. 11, 2001 |
| 6321595 |
Characterization of organic contaminants and assessment of remediation performance in subsurface formations |
Nov. 27, 2001 |
| 6308787 |
Real-time control system and method for controlling an underground boring machine |
Oct. 30, 2001 |
| 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 |
| 6276190 |
Differential total-gas determination while drilling |
Aug. 21, 2001 |
| 6273202 |
Swab test for determining relative formation productivity |
Aug. 14, 2001 |
| 6182505 |
Method and apparatus for studying the properties of a multiphase fluid under pressure flowing in a duct, such as a petroleum stream |
Feb. 6, 2001 |
| 6176129 |
Method and apparatus for acquiring data in a hydrocarbon well |
Jan. 23, 2001 |
| 6003365 |
Characterization of organic contaminants and assessment of remediation performance in subsurface formations |
Dec. 21, 1999 |
| 5905036 |
Characterization of organic contaminants and assessment of remediation performance in subsurface formations |
May. 18, 1999 |
| 5744709 |
Measurement of specific interfacial areas of immiscible fluid interfaces in flow systems |
Apr. 28, 1998 |
| 5708203 |
Neutron logging method for quantitative wellbore fluid analysis |
Jan. 13, 1998 |
| 5661237 |
Method and apparatus for locally measuring flow parameters of a multiphase fluid |
Aug. 26, 1997 |
| 5633470 |
Velocity and holdup determination method for stratified gas-liquid flow in highly inclined conduits |
May. 27, 1997 |
| 5610331 |
Thermal imager for fluids in a wellbore |
Mar. 11, 1997 |
| 5212093 |
Method to determine drift and residual oil saturation |
May. 18, 1993 |
| 5211842 |
Three-phase well test apparatus using pumped recirculation to maintain homogenous flow |
May. 18, 1993 |
| 5205167 |
Method and apparatus for locating stratification in production fluid in a well |
Apr. 27, 1993 |
| 5201220 |
Apparatus and method for detecting the presence of gas in a borehole flow stream |
Apr. 13, 1993 |
| 5190103 |
Metering of two-phase fluids using flow homogenizing devices and chemicals |
Mar. 2, 1993 |
| 5167149 |
Apparatus and method for detecting the presence of gas in a borehole flow stream |
Dec. 1, 1992 |
| 5161409 |
Analysis of drilling solids samples |
Nov. 10, 1992 |
| 5095982 |
Method of characterizing the flowpath for fluid injected into a subterranean formation |
Mar. 17, 1992 |
| 5094103 |
Steam quality and flow rate measurement |
Mar. 10, 1992 |
| 5090238 |
Oil well production testing |
Feb. 25, 1992 |
| 5063776 |
Method and system for measurement of fluid flow in a drilling rig return line |
Nov. 12, 1991 |
| 5044436 |
Steam injection profiling with unstable radioactive isotopes |
Sep. 3, 1991 |
| 5042297 |
Well-logging process and device in a non-flowing production well |
Aug. 27, 1991 |
| 4979393 |
Process for rapidly determining the solids content in drilling fluids |
Dec. 25, 1990 |
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