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Class Information
Number: 507/936
Name: Earth boring, well treating, and oil field chemistry > Enhanced oil recovery > Flooding the formation
Description: Subject matter under art collection 935 wherein the well treating composition is intended to be injected into an oil bearing formation from one well in order to force the oil into at least one other well.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7373977 |
Process for oil recovery employing surfactant gels |
May. 20, 2008 |
| 6043391 |
Anionic surfactants based on alkene sulfonic acid |
Mar. 28, 2000 |
| 6022834 |
Alkaline surfactant polymer flooding composition and process |
Feb. 8, 2000 |
| 5911276 |
Use of unmodified kraft lignin, an amine and a water-soluble sulfonate composition in enhanced oil recovery |
Jun. 15, 1999 |
| 5780395 |
Foam for improving sweep efficiency in subterranean oil-bearing formations |
Jul. 14, 1998 |
| 5725771 |
Process for enzyme pretreatment of drill cuttings |
Mar. 10, 1998 |
| 5478802 |
Gelling compositions useful for oil field applications |
Dec. 26, 1995 |
| 5401425 |
Recovering enhanced oil recovery surfactants by temperature cycling |
Mar. 28, 1995 |
| 5341878 |
Fatty acid salts as steam foaming agents |
Aug. 30, 1994 |
| 5333687 |
Long chain alcohol additives for surfactant foaming agents |
Aug. 2, 1994 |
| 5325920 |
Enhanced oil recovery from low permeability reservoirs using organosilicone surfactants |
Jul. 5, 1994 |
| 5323857 |
Process for enhancing oil recovery using scleroglucan powders |
Jun. 28, 1994 |
| 5318709 |
Process for the production of surfactant mixtures based on ether sulfonates and their use |
Jun. 7, 1994 |
| 5311943 |
Blends of propoxy and ethoxy surfactants |
May. 17, 1994 |
| 5282984 |
Generating bitumen-in-water dispersions and emulsions |
Feb. 1, 1994 |
| 5279367 |
Fatty acid additives for surfactant foaming agents |
Jan. 18, 1994 |
| 5273682 |
Viscosity control additives for foaming mixtures |
Dec. 28, 1993 |
| 5251698 |
Method of using lignosulfonate-acrylic acid graft copolymers as sacrificial agents for surfactant flooding |
Oct. 12, 1993 |
| 5250201 |
Polymeric substance and method of separating and culturing bacteria |
Oct. 5, 1993 |
| 5246072 |
Method for enhancing the recovery of petroleum from an oil-bearing formation using a mixture including anionic and cationic surfactants |
Sep. 21, 1993 |
| 5230814 |
Hydrocarbon recovery comprising injecting a slug comprising oil soluble alkoxylated surfactants from lignin |
Jul. 27, 1993 |
| 5226480 |
Recovery system containing lanthanide-crosslinked polymers |
Jul. 13, 1993 |
| 5203411 |
Oil recovery process using mobility control fluid comprising alkylated diphenyloxide sulfonates and foam forming amphoteric surfactants |
Apr. 20, 1993 |
| 5193618 |
Multivalent ion tolerant steam-foaming surfactant composition for use in enhanced oil recovery operations |
Mar. 16, 1993 |
| 5175278 |
Heteropolysaccharide S-657 |
Dec. 29, 1992 |
| 5167281 |
Dialkylate additives for surfactant sytems |
Dec. 1, 1992 |
| 5143632 |
Polysiloxane polymer having pendant aromatic groups useful in enhanced oil recovery using carbon dioxide flooding |
Sep. 1, 1992 |
| 5139087 |
Method for ensuring injectivity of polymer solutions |
Aug. 18, 1992 |
| 5123486 |
Polysilylenesiloxane polymers useful in enhanced oil recovery using carbon dioxide flooding |
Jun. 23, 1992 |
| 5114599 |
Use of lignin/amine/surfactant blends in enhanced oil recovery |
May. 19, 1992 |
| 5105887 |
Enhanced oil recovery technique using hydrogen precursors |
Apr. 21, 1992 |
| 5102561 |
Processes of thickening and of oil recovery using polysaccharide polymer made by xanthomonas |
Apr. 7, 1992 |
| 5102560 |
Organosilicon polymer having nonrandom crosslinkages useful in enhanced oil recovery using carbon dioxide flooding |
Apr. 7, 1992 |
| 5100567 |
Shear-thickening solutions with hydroxypropyl cellulose |
Mar. 31, 1992 |
| 5095985 |
Enhance oil recovery using oil soluble sulfonate surfactants from lignin and alkylphenol |
Mar. 17, 1992 |
| 5095986 |
Enhanced oil recovery using oil soluble sulfonates from lignin and benzyl alcohol |
Mar. 17, 1992 |
| 5094295 |
Enhanced oil recovery using alkylated, sulfonated, oxidized lignin surfactants |
Mar. 10, 1992 |
| 5092405 |
Alkoxylated surfactant system for heavy oil reservoirs |
Mar. 3, 1992 |
| 5089151 |
Fluid additive and method for treatment of subterranean formations |
Feb. 18, 1992 |
| 5085787 |
Crosslinked vinylamine polymer in enhanced oil recovery |
Feb. 4, 1992 |
| 5083612 |
Hot water, surfactant, and polymer flooding process for heavy oil |
Jan. 28, 1992 |
| 5083613 |
Process for producing bitumen |
Jan. 28, 1992 |
| 5080809 |
Polymers useful in the recovery and processing of natural resources |
Jan. 14, 1992 |
| 5080169 |
Polysilalkylenesilane polymer useful in enhanced oil recovery using carbon dioxide flooding |
Jan. 14, 1992 |
| 5076357 |
Method of enhancing recovery of petroleum from an oil-bearing formation |
Dec. 31, 1991 |
| 5076363 |
Surfactant-polymer composition and method of enhanced oil recovery |
Dec. 31, 1991 |
| 5074358 |
Surfactant-stabilized foams for enhanced oil recovery |
Dec. 24, 1991 |
| 5069802 |
Gas flood surfactants enriched in olefin disulfonate |
Dec. 3, 1991 |
| 5068043 |
Preformed surfactant-optimized aqueous alkaline flood |
Nov. 26, 1991 |
| 5062969 |
Crosslinkable interpolymers |
Nov. 5, 1991 |
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