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Class Information
Number: 73/152.08
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Formation logging (e.g., borehole studies of pressure derivatives or of pressure-temperature derivatives) > Oil, gas, or water saturation
Description: Subject matter wherein the determination of the physical characteristic of the borehole is made by measuring the maximum impregnation by gas, water, or oil of a bulk formation of a borehole or of selected constituents of a formation of a borehole.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7555390 |
Petrophysical interpretation of multipass array resistivity data obtained while drilling |
Jun. 30, 2009 |
| 7380598 |
Method for detecting fluid leakage from a subterranean formation |
Jun. 3, 2008 |
| 7340384 |
Process for determining the variation in the relative permeability of at least one fluid in a reservoir |
Mar. 4, 2008 |
| 7295927 |
Determining water saturation for oil bearing thin-bedded formation having anisotropic resistivity |
Nov. 13, 2007 |
| 5909772 |
Apparatus and method for estimating liquid yield of a gas/condensate reservoir |
Jun. 8, 1999 |
| 5335542 |
Integrated permeability measurement and resistivity imaging tool |
Aug. 9, 1994 |
| 5059907 |
Method for evaluating the water saturation of subterranean formations from dielectric permittivity measurements |
Oct. 22, 1991 |
| 5048328 |
Method of determining the porosity and irreducible water saturation of a coal cleat system |
Sep. 17, 1991 |
| 4961343 |
Method for determining permeability in hydrocarbon wells |
Oct. 9, 1990 |
| 4958286 |
Time-variant filter coefficients |
Sep. 18, 1990 |
| 4916616 |
Self-consistent log interpretation method |
Apr. 10, 1990 |
| 4907448 |
Apparatus for measuring resistivity of porous rock |
Mar. 13, 1990 |
| 4833914 |
Pore pressure formation evaluation while drilling |
May. 30, 1989 |
| 4790180 |
Method for determining fluid characteristics of subterranean formations |
Dec. 13, 1988 |
| 4786873 |
Method for evaluating water saturation in petroleum reservoirs from dielectric permittivity |
Nov. 22, 1988 |
| 4733725 |
Single well test for evaluating CO.sub.2 injection |
Mar. 29, 1988 |
| 4710906 |
Method and system for monitoring the stability of boreholes |
Dec. 1, 1987 |
| 4584874 |
Method for determining porosity, clay content and mode of distribution in gas and oil bearing shaly sand reservoirs |
Apr. 29, 1986 |
| 4543821 |
Method and apparatus for measuring relative permeability and water saturation of a core |
Oct. 1, 1985 |
| 4517836 |
Method for determining oil saturation in a subsurface formation |
May. 21, 1985 |
| 4506548 |
Method of locating potential low water cut hydrocarbon reservoirs in high water saturation sands |
Mar. 26, 1985 |
| 4502121 |
Machine method for determining the presence and location of hydrocarbon deposits within a subsurface earth formation |
Feb. 26, 1985 |
| 4486836 |
Well logging: utilizing superposition of step-profile responses of logging tools to improve logs |
Dec. 4, 1984 |
| 4484470 |
Method and apparatus for determining characteristics of clay-bearing formations |
Nov. 27, 1984 |
| 4484278 |
Well logging: utilizing superposition of step-profile responses of logging tools to improve logs |
Nov. 20, 1984 |
| 4413512 |
Method of locating potential low water cut hydrocarbon reservoirs |
Nov. 8, 1983 |
| 4399693 |
Applications of borehole gravimetric techniques to determine residual oil saturation |
Aug. 23, 1983 |
| 4397181 |
Method for determining fluid saturation in a subsurface formation |
Aug. 9, 1983 |
| 4354381 |
Sonic attenuating method for distinguishing between oil, water and gas |
Oct. 19, 1982 |
| 4353248 |
Well logging to determine the nature and extent of mud filtrate penetration |
Oct. 12, 1982 |
| 4233840 |
Method for evaluation of the response of different cores to a recovery process and apparatus therefor |
Nov. 18, 1980 |
| 4233839 |
Apparatus and method for determining characteristics of subsurface formations |
Nov. 18, 1980 |
| 4052893 |
Measuring reservoir oil saturation |
Oct. 11, 1977 |
| RE28963 |
Determination of residual oil in a formation |
Sep. 14, 1976 |
| RE28925 |
Neutron method for determining residual oil-phase fluid concentration |
Aug. 10, 1976 |
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