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Class Information
Number: 166/306
Name: Wells > Processes > Placing fluid into the formation > Fluid enters and leaves well at spaced zones
Description: A process in which fluid leaves the well to enter pores in the earth and fluid also enters the well from pores in the earth, the zones of departure from and entry into the well being spaced from each other.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7426962 |
Flow control device for an injection pipe string |
Sep. 23, 2008 |
| 7419005 |
Method of stimulating long horizontal wells to improve well productivity |
Sep. 2, 2008 |
| 7165621 |
Method for exploitation of gas hydrates |
Jan. 23, 2007 |
| 7134505 |
Method and apparatus for wellbore fluid treatment |
Nov. 14, 2006 |
| 7128150 |
Acid gas disposal method |
Oct. 31, 2006 |
| 7066265 |
System and method of production enhancement and completion of a well |
Jun. 27, 2006 |
| 6921477 |
Groundwater treatment system and method |
Jul. 26, 2005 |
| 6907936 |
Method and apparatus for wellbore fluid treatment |
Jun. 21, 2005 |
| 6787038 |
Extraction of pollutants from underground water |
Sep. 7, 2004 |
| 6782946 |
Method and apparatus for injecting one or more fluids into a borehole |
Aug. 31, 2004 |
| 6691781 |
Downhole gas/water separation and re-injection |
Feb. 17, 2004 |
| 6651742 |
Method and apparatus for enhancing oil recovery |
Nov. 25, 2003 |
| 6575242 |
Method and an apparatus for use in production tests, testing an expected permeable formation |
Jun. 10, 2003 |
| 6481500 |
Method and apparatus for enhancing oil recovery |
Nov. 19, 2002 |
| 6415864 |
System and method for separately producing water and oil from a reservoir |
Jul. 9, 2002 |
| 6382315 |
Method and apparatus for continuously testing a well |
May. 7, 2002 |
| 6367548 |
Diversion treatment method |
Apr. 9, 2002 |
| 6352387 |
Recirculation-enhanced subsurface reagent delivery system |
Mar. 5, 2002 |
| 6318469 |
Completion equipment having a plurality of fluid paths for use in a well |
Nov. 20, 2001 |
| 6305470 |
Method and apparatus for production testing involving first and second permeable formations |
Oct. 23, 2001 |
| 6260622 |
Apparatus and method of injecting treatment fluids into a formation surrounding an underground borehole |
Jul. 17, 2001 |
| 6260619 |
Oil and gas production with downhole separation and compression of gas |
Jul. 17, 2001 |
| 6257334 |
Steam-assisted gravity drainage heavy oil recovery process |
Jul. 10, 2001 |
| 6196314 |
Insoluble salt control system and method |
Mar. 6, 2001 |
| 6196312 |
Dual pump gravity separation system |
Mar. 6, 2001 |
| 6131660 |
Dual injection and lifting system using rod pump and an electric submersible pump (ESP) |
Oct. 17, 2000 |
| 6125936 |
Dual completion method for oil/gas wells to minimize water coning |
Oct. 3, 2000 |
| 6070663 |
Multi-zone profile control |
Jun. 6, 2000 |
| 6039116 |
Oil and gas production with periodic gas injection |
Mar. 21, 2000 |
| 6035934 |
Method and system for separating and injecting gas in a wellbore |
Mar. 14, 2000 |
| 6026901 |
Method and system for separating and injecting gas in a wellbore |
Feb. 22, 2000 |
| 6006838 |
Apparatus and method for stimulating multiple production zones in a wellbore |
Dec. 28, 1999 |
| 5911541 |
Thin layer solvent extraction |
Jun. 15, 1999 |
| 5884701 |
Dual downhole injection system utilizing coiled tubing |
Mar. 23, 1999 |
| 5879108 |
Air sparging/soil vapor extraction apparatus |
Mar. 9, 1999 |
| 5803178 |
Downwell isolator |
Sep. 8, 1998 |
| 5794697 |
Method for increasing oil production from an oil well producing a mixture of oil and gas |
Aug. 18, 1998 |
| 5771973 |
Single well vapor extraction process |
Jun. 30, 1998 |
| 5709505 |
Vertical isolation system for two-phase vacuum extraction of soil and groundwater contaminants |
Jan. 20, 1998 |
| 5655852 |
High vacuum extraction of soil contaminants along preferential flow paths |
Aug. 12, 1997 |
| 5622450 |
Pressure extraction process for removing soil and groundwater contaminants |
Apr. 22, 1997 |
| 5615739 |
Apparatus and method for completing and recompleting wells for production |
Apr. 1, 1997 |
| 5529124 |
Method for retarding water coning |
Jun. 25, 1996 |
| 5511616 |
Hydrocarbon recovery method using inverted production wells |
Apr. 30, 1996 |
| 5503226 |
Process for recovering hydrocarbons by thermally assisted gravity segregation |
Apr. 2, 1996 |
| 5449251 |
Dynamic underground stripping: steam and electric heating for in situ decontamination of soils and groundwater |
Sep. 12, 1995 |
| 5443120 |
Method for improving productivity of a well |
Aug. 22, 1995 |
| 5380126 |
Method of and arrangement for rinsing out impurities from ground |
Jan. 10, 1995 |
| 5377756 |
Method for producing low permeability reservoirs using a single well |
Jan. 3, 1995 |
| 5366011 |
Method for producing high water-cut gas with in situ water-disposal |
Nov. 22, 1994 |
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