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Class Information
Number: 166/267
Name: Wells > Processes > Separating material entering well > Separating outside of well
Description: A process comprising separating the material coming out of the well into two or more portions by steps taking place outside of the well.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4966235 |
In situ application of high temperature resistant surfactants to produce water continuous emulsions for improved crude recovery |
Oct. 30, 1990 |
| 4948494 |
Removal of hydrogen sulfide from produced fluids |
Aug. 14, 1990 |
| 4945988 |
Apparatus and process for removing volatile contaminants from below ground level |
Aug. 7, 1990 |
| 4930574 |
Method for tertiary oil recovery from deep-well drill holes with utilization of the escaping petroleum gas |
Jun. 5, 1990 |
| 4919207 |
Method for drawing up special crude oil |
Apr. 24, 1990 |
| 4911240 |
Self treating paraffin removing apparatus and method |
Mar. 27, 1990 |
| 4909925 |
Removal of hydrogen sulphides |
Mar. 20, 1990 |
| 4896725 |
In-well heat exchange method for improved recovery of subterranean fluids with poor flowability |
Jan. 30, 1990 |
| 4892664 |
Decontamination of sites where organic compound contaminants endanger the water supply |
Jan. 9, 1990 |
| 4892477 |
Apparatus for flaring gas |
Jan. 9, 1990 |
| 4890673 |
Method of removing volatile contaminants from contaminated earth strata |
Jan. 2, 1990 |
| 4886116 |
Natural gas production apparatus with bottom-hole separator |
Dec. 12, 1989 |
| 4886119 |
Method of and arrangement for driving volatile impurities from ground |
Dec. 12, 1989 |
| 4882009 |
Apparatus for concentrating brine waters or dewatering brines generated in well drilling operation |
Nov. 21, 1989 |
| 4880040 |
Liquid petroleum confinement system |
Nov. 14, 1989 |
| 4880057 |
Process for removing carbonate from wells |
Nov. 14, 1989 |
| 4877536 |
Method of treating saline water |
Oct. 31, 1989 |
| RE33102 |
Removal of volatile contaminants from the vadose zone of contaminated ground |
Oct. 31, 1989 |
| 4846275 |
Recovery of heavy crude oil or tar sand oil or bitumen from underground formations |
Jul. 11, 1989 |
| 4844162 |
Apparatus and method for treating geothermal steam which contains hydrogen sulfide |
Jul. 4, 1989 |
| 4844158 |
Solvent stimulation of viscous oil via a horizontal wellbore |
Jul. 4, 1989 |
| 4836935 |
Oil removal from waterflooding injection water |
Jun. 6, 1989 |
| 4830755 |
Process and apparatus for purifying oil contaminated ground water |
May. 16, 1989 |
| 4828030 |
Viscous oil recovery by removing fines |
May. 9, 1989 |
| 4827040 |
Process of degradation of alkyl polysulphides into polysulphides having a lower sulphur content |
May. 2, 1989 |
| 4817715 |
Aqueous flooding methods for tertiary oil recovery |
Apr. 4, 1989 |
| 4817711 |
System for recovery of petroleum from petroleum impregnated media |
Apr. 4, 1989 |
| 4813482 |
Method for removal of paraffin from producing oil wells |
Mar. 21, 1989 |
| 4789030 |
Production of hydrogen sulphide containing gas from underground formations |
Dec. 6, 1988 |
| 4787450 |
Gas lift process for restoring flow in depleted geothermal reservoirs |
Nov. 29, 1988 |
| 4779677 |
Oil well fluid processing system |
Oct. 25, 1988 |
| 4778006 |
Process for removing carbonate from wells |
Oct. 18, 1988 |
| 4770678 |
Contaminant removal from fluids |
Sep. 13, 1988 |
| 4769156 |
Method and means to pump a well |
Sep. 6, 1988 |
| 4765910 |
Use of ammonium chloride solutions to remove sulfonate surfactants from crude oil |
Aug. 23, 1988 |
| 4756368 |
Method for drawing up special crude oil |
Jul. 12, 1988 |
| 4756836 |
Downhole hydrogen sulfide scavenging in drilling mud using iron chelates |
Jul. 12, 1988 |
| 4753293 |
Process for recovering petroleum from formations containing viscous crude or tar |
Jun. 28, 1988 |
| 4741398 |
Hydraulic accumulator-compressor for geopressured enhanced oil recovery |
May. 3, 1988 |
| 4737265 |
Water based demulsifier formulation and process for its use in dewatering and desalting crude hydrocarbon oils |
Apr. 12, 1988 |
| 4730672 |
Method of removing and controlling volatile contaminants from the vadose layer of contaminated earth |
Mar. 15, 1988 |
| 4726420 |
Oil well pumping system |
Feb. 23, 1988 |
| 4724907 |
Method and device for blending surfactant mixtures for treatment of oil wells |
Feb. 16, 1988 |
| 4721164 |
Method of heat exchange for variable-content nitrogen rejection units |
Jan. 26, 1988 |
| 4721565 |
Apparatus for handling mixtures |
Jan. 26, 1988 |
| 4712616 |
Method for scale reduction in off-shore platforms |
Dec. 15, 1987 |
| 4711306 |
Gas lift system |
Dec. 8, 1987 |
| 4708793 |
System for separating gas-liquid flowstreams |
Nov. 24, 1987 |
| 4706749 |
Method for improved oil recovery |
Nov. 17, 1987 |
| 4705114 |
Offshore hydrocarbon production system |
Nov. 10, 1987 |
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