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Class Information
Number: 166/268
Name: Wells > Processes > Distinct, separate injection and producing wells
Description: A process comprising a step of using a plurality of wells, at least one of which receives a fluid for insertion into the pores of the earth, usually to push hydrocarbons, and another of which conducts the pushed hydrocarbons and fluid from the pores of the earth to the surface of the earth.


Sub-classes under this class:

Class Number Class Name Patents
166/269 Fluid injected from longitudinally spaced locations in injection well 82
166/271 Including fracturing or attacking formation 211
166/275 Injected fluid comprises water and material other than inorganic gas 476
166/270.1 Injecting a composition including a surfactant or cosurfactant 417
166/270 Injecting a composition to adjust the permeability (e.g., selective plugging) 248
166/272.1 Involving the step of heating 210
166/400 Sequentially injected separate fluids (e.g., slugs) 154


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7624801 Control system and method for controlling a hybrid petroleum extractor/power generator Dec. 1, 2009
7553800 In-situ filter cake degradation compositions and methods of use in subterranean formations Jun. 30, 2009
7527096 Methods of improving heavy oil production May. 5, 2009
7516795 Subsea petroleum production system method of installation and use of the same Apr. 14, 2009
7506685 Apparatus and method for extracting petroleum from underground sites using reformed gases Mar. 24, 2009
7481275 Plant and a method for increased oil recovery Jan. 27, 2009
7472747 Biological enhancement of hydrocarbon extraction Jan. 6, 2009
7464760 Inhibiting reservoir souring using a treated injection water Dec. 16, 2008
7451814 System and method for producing fluids from a subterranean formation Nov. 18, 2008
7426959 Systems and methods for producing oil and/or gas Sep. 23, 2008
7360595 Method and system for underground treatment of materials Apr. 22, 2008
7303006 Method for improved vertical sweep of oil reservoirs Dec. 4, 2007
7299868 Method and system for recovery of hydrocarbons from a hydrocarbon-bearing information Nov. 27, 2007
7279447 Subterranean well and oil or gas stream treatment with bis(3-alkoxyalkan-2-ol) sulfides, sulfones, and sulfoxides: new surface active agents Oct. 9, 2007
7262153 Method and composition for enhanced hydrocarbons recovery Aug. 28, 2007
7249634 Apparatus for production in oil wells Jul. 31, 2007
7226895 Drilling fluid systems for reducing circulation losses Jun. 5, 2007
7168488 Method and plant or increasing oil recovery by gas injection Jan. 30, 2007
7165621 Method for exploitation of gas hydrates Jan. 23, 2007
7152681 Method and arrangement for treatment of fluid Dec. 26, 2006
7137447 Method and composition for enhanced hydrocarbons recovery Nov. 21, 2006
7100692 Tertiary oil recovery combined with gas conversion process Sep. 5, 2006
7077202 Process for the recovery of oil from a natural oil reservoir Jul. 18, 2006
7073595 Method and system for controlling pressure in a dual well system Jul. 11, 2006
7069990 Enhanced oil recovery methods Jul. 4, 2006
7059402 Method and apparatus for exploiting oilfields Jun. 13, 2006
7055602 Method and composition for enhanced hydrocarbons recovery Jun. 6, 2006
7036585 Aqueous viscoelastic fluid May. 2, 2006
7033975 Use of surface-modified nanoparticles for oil recovery Apr. 25, 2006
7025134 Surface pulse system for injection wells Apr. 11, 2006
6966374 In situ thermal recovery from a relatively permeable formation using gas to increase mobility Nov. 22, 2005
6959761 In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells Nov. 1, 2005
6894008 Method of increasing pH of high-density brines May. 17, 2005
6860147 Process for predicting porosity and permeability of a coal bed Mar. 1, 2005
6840321 Multilateral injection/production/storage completion system Jan. 11, 2005
6817411 System for displacement of water in coalbed gas reservoirs Nov. 16, 2004
6775578 Optimization of oil well production with deference to reservoir and financial uncertainty Aug. 10, 2004
6729394 Method of producing a communicating horizontal well network May. 4, 2004
6681855 Method and system for management of by-products from subterranean zones Jan. 27, 2004
6651741 Method of increasing productivity of oil, gas and hydrogeological wells Nov. 25, 2003
6619396 Method of producing petroleum Sep. 16, 2003
6595291 Process of preparing a gas composition and use thereof Jul. 22, 2003
6564866 Method and apparatus for a tubing conveyed perforating guns fire identification system using enhanced marker material May. 20, 2003
6543535 Process for stimulating microbial activity in a hydrocarbon-bearing, subterranean formation Apr. 8, 2003
6464005 Remediation method Oct. 15, 2002
6450256 Enhanced coalbed gas production system Sep. 17, 2002
6443229 Method and system for extraction of liquid hydraulics from subterranean wells Sep. 3, 2002
6405796 Method for improving oil recovery using an ultrasound technique Jun. 18, 2002
6325147 Enhanced oil recovery process with combined injection of an aqueous phase and of at least partially water-miscible gas Dec. 4, 2001
6326187 Method to remediate soil using a surfactant of an alkenylsuccinic anhydride or acid reacted an amine acid or salt of an amine acid Dec. 4, 2001

1 2 3 4 5


 
 
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