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Class Information
Number: 73/152.55
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Downhole test > Fluid test
Description: Subject matter wherein the determination of the physical characteristic of the borehole, the casing, or the drill rigging is made by measuring a property of a liquid, a gas, or a suspension of a solid in a liquid or a gas.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7588081 |
Method of modifying permeability between injection and production wells |
Sep. 15, 2009 |
| 7571644 |
Characterizing a reservoir in connection with drilling operations |
Aug. 11, 2009 |
| 7478555 |
Technique and apparatus for use in well testing |
Jan. 20, 2009 |
| 7475593 |
High temperature near infrared for measurements and telemetry in well boreholes |
Jan. 13, 2009 |
| 7464588 |
Apparatus and method for detecting fluid entering a wellbore |
Dec. 16, 2008 |
| 7461547 |
Methods and apparatus of downhole fluid analysis |
Dec. 9, 2008 |
| 7458420 |
Downhole measurement system and method |
Dec. 2, 2008 |
| 7445043 |
System and method for detecting pressure disturbances in a formation while performing an operation |
Nov. 4, 2008 |
| 7392697 |
Apparatus for downhole fluids analysis utilizing micro electro mechanical system (MEMS) or other sensors |
Jul. 1, 2008 |
| 7387021 |
Method and apparatus for reservoir characterization using photoacoustic spectroscopy |
Jun. 17, 2008 |
| 7380598 |
Method for detecting fluid leakage from a subterranean formation |
Jun. 3, 2008 |
| 7373813 |
Method and apparatus for ion-selective discrimination of fluids downhole |
May. 20, 2008 |
| 7363972 |
Method and apparatus for well testing |
Apr. 29, 2008 |
| 7337660 |
Method and system for reservoir characterization in connection with drilling operations |
Mar. 4, 2008 |
| 7263881 |
Single probe downhole sampling apparatus and method |
Sep. 4, 2007 |
| 7207216 |
Hydraulic and mechanical noise isolation for improved formation testing |
Apr. 24, 2007 |
| 7185536 |
Pressure monitoring technique for downhole tools |
Mar. 6, 2007 |
| 7025138 |
Method and apparatus for hydrogen sulfide monitoring |
Apr. 11, 2006 |
| 6976535 |
Method of utilizing flowable devices in wellbores |
Dec. 20, 2005 |
| 6971265 |
Downhole sensing apparatus with separable elements |
Dec. 6, 2005 |
| 6957573 |
Vadose zone water fluxmeter |
Oct. 25, 2005 |
| 6950750 |
Method of estimating the gas/oil ratio (GOR) in the fluids of a well during drilling |
Sep. 27, 2005 |
| 6938469 |
Method for determining properties of formation fluids |
Sep. 6, 2005 |
| 6926081 |
Methods of discovering and correcting subterranean formation integrity problems during drilling |
Aug. 9, 2005 |
| 6843119 |
Apparatus for measuring and recording data from boreholes |
Jan. 18, 2005 |
| 6792798 |
Ultrasonic cylindrical resonator to facilitate bubble point pressure measurement |
Sep. 21, 2004 |
| 6786086 |
Determining the in situ effective mobility and the effective permeabilty of a formation |
Sep. 7, 2004 |
| 6758271 |
System and technique to improve a well stimulation process |
Jul. 6, 2004 |
| 6758090 |
Method and apparatus for the detection of bubble point pressure |
Jul. 6, 2004 |
| 6745833 |
Method of utilizing flowable devices in wellbores |
Jun. 8, 2004 |
| 6719055 |
Method for drilling and completing boreholes with electro-rheological fluids |
Apr. 13, 2004 |
| 6655452 |
Downhole gauge carrier apparatus |
Dec. 2, 2003 |
| 6622554 |
Open hole formation testing |
Sep. 23, 2003 |
| 6591673 |
Methods for identifying fluid types of underground formations |
Jul. 15, 2003 |
| 6581455 |
Modified formation testing apparatus with borehole grippers and method of formation testing |
Jun. 24, 2003 |
| 6539780 |
Self-compensating tensiometer and method |
Apr. 1, 2003 |
| 6453738 |
Method and apparatus for analyzing casing wear and retrieval of metallic fragments |
Sep. 24, 2002 |
| 6443228 |
Method of utilizing flowable devices in wellbores |
Sep. 3, 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 |
| 6412555 |
System and method for controlling fluid flow in one or more oil and/or gas wells |
Jul. 2, 2002 |
| 6408691 |
Well monitoring system |
Jun. 25, 2002 |
| 6374669 |
Water influx identification |
Apr. 23, 2002 |
| 6360823 |
Apparatus and method for performing downhole measurements |
Mar. 26, 2002 |
| 6343507 |
Method to improve the quality of a formation fluid sample |
Feb. 5, 2002 |
| 6272915 |
Dual transmitter multi-capacitance flow meter |
Aug. 14, 2001 |
| 6263730 |
Downhole pump strainer data recording device and method |
Jul. 24, 2001 |
| 6189612 |
Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
Feb. 20, 2001 |
| 6062073 |
In situ borehole sample analyzing probe and valved casing coupler therefor |
May. 16, 2000 |
| 6000470 |
Self-locking connector |
Dec. 14, 1999 |
| 5969242 |
Isobaric groundwater well |
Oct. 19, 1999 |
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