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Class Information
Number: 166/250.01
Name: Wells > Processes > With indicating, testing, measuring or locating
Description: Process including a step of: providing evidence of a condition; e.g., leak, oil-gas interface; performing an analysis; e.g., downhole pressure; counting; or determining the position of an object or formation.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4815536 |
Analysis of multi-phase mixtures |
Mar. 28, 1989 |
| 4811598 |
Downhole temperature measurements |
Mar. 14, 1989 |
| 4798244 |
Tool and process for stimulating a subterranean formation |
Jan. 17, 1989 |
| 4756366 |
Well servicing methods using a hydraulic actuated workover mast |
Jul. 12, 1988 |
| 4745975 |
Water well completion apparatus and method of use |
May. 24, 1988 |
| 4739830 |
Method of collecting geothermal steam using AE/MA measurement |
Apr. 26, 1988 |
| 4721158 |
Fluid injection control system |
Jan. 26, 1988 |
| 4715442 |
Apparatus for servicing tubular strings in subterranean wells |
Dec. 29, 1987 |
| 4715443 |
Baffle system for conducting well treating operations |
Dec. 29, 1987 |
| 4711303 |
Method and means for determining the subsurface position of a blowing well with respect to a relief well |
Dec. 8, 1987 |
| 4673652 |
Method of testing and reconditioning insulating tubular conduits |
Jun. 16, 1987 |
| 4662442 |
Process and device for casing a borehole for the measurement of the interstitial pressure of a porous medium |
May. 5, 1987 |
| 4662391 |
Method and apparatus for splitting a liquid-vapor mixture |
May. 5, 1987 |
| 4640354 |
Method for actuating a tool in a well at a given depth and tool allowing the method to be implemented |
Feb. 3, 1987 |
| 4637463 |
Echo ranging gun |
Jan. 20, 1987 |
| 4635717 |
Method and apparatus for obtaining selected samples of formation fluids |
Jan. 13, 1987 |
| 4617993 |
Carbon dioxide stimulated oil recovery process |
Oct. 21, 1986 |
| 4616705 |
Mini-well temperature profiling process |
Oct. 14, 1986 |
| 4615389 |
Method of producing supercritical carbon dioxide from wells |
Oct. 7, 1986 |
| 4615390 |
System to control the combining of two fluids |
Oct. 7, 1986 |
| 4597290 |
Method for determining the characteristics of a fluid-producing underground formation |
Jul. 1, 1986 |
| 4572293 |
Method of placing magnetic markers on collarless cased wellbores |
Feb. 25, 1986 |
| 4570710 |
Method for preventing wellbore damage due to fines migration |
Feb. 18, 1986 |
| 4558592 |
Apparatus for on-site assessment of the effectiveness of a treatment in the course of its application to a hydrocarbon well |
Dec. 17, 1985 |
| 4535843 |
Method and apparatus for obtaining selected samples of formation fluids |
Aug. 20, 1985 |
| 4508169 |
Method for determining connate water saturation and salinity in reservoirs |
Apr. 2, 1985 |
| 4501325 |
Method for predicting workovers and shut-ins from analyzing the annulus effluent of a well |
Feb. 26, 1985 |
| 4498536 |
Method of washing, injecting swabbing or flow testing subterranean wells |
Feb. 12, 1985 |
| 4478294 |
Positive fire indicator system |
Oct. 23, 1984 |
| 4475386 |
Borehole gravimetry system |
Oct. 9, 1984 |
| 4458755 |
Process for preparing alkaline flooding solutions that avoid silica dissolution |
Jul. 10, 1984 |
| 4458754 |
Method and system for automatically raising product from a heated well |
Jul. 10, 1984 |
| 4435978 |
Hot wire anemometer flow meter |
Mar. 13, 1984 |
| 4423779 |
Oil recovery system and process |
Jan. 3, 1984 |
| 4407366 |
Method for gas capping of idle geothermal steam wells |
Oct. 4, 1983 |
| 4401169 |
System for lagtime measurement during drilling |
Aug. 30, 1983 |
| 4396062 |
Apparatus and method for time-domain tracking of high-speed chemical reactions |
Aug. 2, 1983 |
| 4392376 |
Method and apparatus for monitoring borehole conditions |
Jul. 12, 1983 |
| 4330037 |
Well treating process for chemically heating and modifying a subterranean reservoir |
May. 18, 1982 |
| 4321967 |
Suction of gases from boreholes in coal mining |
Mar. 30, 1982 |
| 4273187 |
Petroleum recovery chemical retention prediction technique |
Jun. 16, 1981 |
| 4267885 |
Method and apparatus for optimizing production in a continuous or intermittent gas-lift well |
May. 19, 1981 |
| 4252190 |
Wireline stabilization method and apparatus |
Feb. 24, 1981 |
| 4224988 |
Device for and method of sensing conditions in a well bore |
Sep. 30, 1980 |
| 4157535 |
Down hole pressure/temperature gage connect/disconnect method and apparatus |
Jun. 5, 1979 |
| 4147222 |
Acoustical underwater communication system for command control and data |
Apr. 3, 1979 |
| 4127169 |
Secondary oil recovery method and system |
Nov. 28, 1978 |
| 4119148 |
Perforating apparatus and method for well casing |
Oct. 10, 1978 |
| 4116274 |
Wireline latching apparatus and method of use |
Sep. 26, 1978 |
| 4036297 |
Subsurface flow control apparatus and method |
Jul. 19, 1977 |
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