| Patent | Date |
|---|
Recovery of oil by in situ hydrogenation
Grant 4,597,441 - Ware , et al. July 1, 1 | 1986-07-01 |
Superheated solvent method for recovering viscous petroleum
Grant 4,450,913 - Allen , et al. May 29, 1 | 1984-05-29 |
Method and apparatus for recovering high viscosity oils
Grant 4,434,849 - Allen March 6, 1 | 1984-03-06 |
Method for recovering high viscosity oils
Grant 4,410,216 - Allen October 18, 1 | 1983-10-18 |
Terpolymer of N-vinyl pyrrolidone in alkoxylated form
Grant 4,277,580 - Allen , et al. July 7, 1 | 1981-07-07 |
Method for recovering subsurface earth substances
Grant 4,257,650 - Allen March 24, 1 | 1981-03-24 |
Miscible displacement oil recovery method
Grant 4,249,607 - Allen February 10, 1 | 1981-02-10 |
Composition for recovering hydrocarbons
Grant 4,233,166 - Allen November 11, 1 | 1980-11-11 |
Composition and process for stimulating well production
Grant 4,219,429 - Allen , et al. August 26, 1 | 1980-08-26 |
Process for recovering hydrocarbons
Grant 4,186,800 - Allen February 5, 1 | 1980-02-05 |
Hydrocarbon recovery process
Grant 4,156,462 - Allen May 29, 1 | 1979-05-29 |
Steam flooding hydrocarbon recovery process
Grant 4,133,384 - Allen , et al. January 9, 1 | 1979-01-09 |
Method for recovering hydrocarbons
Grant 4,127,171 - Allen November 28, 1 | 1978-11-28 |
High vertical and horizontal conformance viscous oil recovery method
Grant 4,124,071 - Allen , et al. November 7, 1 | 1978-11-07 |
Secondary recovery process utilizing water saturated with gas
Grant 4,110,224 - Allen August 29, 1 | 1978-08-29 |
Combination solvent-noncondensible gas injection method for recovering petroleum from viscous petroleum-containing formations including tar sand deposits
Grant 4,109,720 - Allen , et al. August 29, 1 | 1978-08-29 |
Method for recovering viscous petroleum
Grant 4,099,568 - Allen July 11, 1 | 1978-07-11 |
Oil recovery process utilizing air and superheated steam
Grant 4,083,404 - Allen April 11, 1 | 1978-04-11 |
Thermal oil recovery method
Grant 4,078,608 - Allen , et al. March 14, 1 | 1978-03-14 |
Oil displacement fluid containing a solubilizing agent
Grant 4,071,458 - Allen January 31, 1 | 1978-01-31 |
Oil recovery process utilizing aromatic solvent and steam
Grant 4,068,716 - Allen January 17, 1 | 1978-01-17 |
Thermal recovery method
Grant 4,059,152 - Allen , et al. November 22, 1 | 1977-11-22 |
Secondary recovery process utilizing water saturated with gas
Grant 4,044,831 - Allen August 30, 1 | 1977-08-30 |
Method of in situ recovery of viscous oils and bitumens
Grant 4,026,358 - Allen May 31, 1 | 1977-05-31 |
Recovery of viscous oil by unheated air injection, followed by in situ combustion
Grant 4,024,915 - Allen May 24, 1 | 1977-05-24 |
Recovery of oil by a vertical miscible flood
Grant 4,022,278 - Allen May 10, 1 | 1977-05-10 |
Carrier gas vaporized solvent oil recovery method
Grant 4,008,764 - Allen February 22, 1 | 1977-02-22 |
Heated multiple solvent method for recovering viscous petroleum
Grant 4,007,785 - Allen , et al. * February 15, 1 | 1977-02-15 |
Method for increasing the oil recovery from active water drive reservoirs
Grant 3,987,853 - Allen * October 26, 1 | 1976-10-26 |
In-situ combustion method for the recovery of hydrocarbons
Grant 3,981,362 - Allen , et al. September 21, 1 | 1976-09-21 |
Multiple solvent heavy oil recovery method
Grant 3,954,141 - Allen , et al. May 4, 1 | 1976-05-04 |
Vertical downward gas-driven miscible blanket flooding oil recovery process
Grant 3,878,892 - Allen , et al. April 22, 1 | 1975-04-22 |
Recovery of viscous petroleum from asphaltic petroleum containing formations such as tar sand deposits
Grant 3,874,452 - Allen , et al. April 1, 1 | 1975-04-01 |
Hydraulic Fracturing Method
Grant 3,865,190 - Christopher , et al. February 11, 1 | 1975-02-11 |
Miscible Displacement Of Petroleum
Grant 3,850,245 - Allen , et al. November 26, 1 | 1974-11-26 |
Vertical Downward Gas-driven Miscible Blanket Flooding Oil Recovery Process
Grant 3,850,243 - Allen , et al. November 26, 1 | 1974-11-26 |
Miscible Displacement Of Petroleum
Grant 3,847,224 - Allen , et al. November 12, 1 | 1974-11-12 |
Solution Mining Technique For Tar Sand Deposits
Grant 3,845,820 - Allen , et al. November 5, 1 | 1974-11-05 |
Combined Multiple Solvent Miscible Flooding Water Injection Technique For Use In Petroleum Formations
Grant 3,837,399 - Allen , et al. September 24, 1 | 1974-09-24 |
In Situ Combustion Oil Recovery Method
Grant 3,830,300 - Allen August 20, 1 | 1974-08-20 |
Secondary Recovery Method
Grant 3,817,330 - Christopher , et al. June 18, 1 | 1974-06-18 |
Method For Recovering Oil From Subterranean Reservoirs
Grant 3,796,262 - Allen , et al. March 12, 1 | 1974-03-12 |
Oil Recovery Process Utilizing Superheated Gaseous Mixtures
Grant 3,768,559 - Allen , et al. October 30, 1 | 1973-10-30 |
Recovery Of Hydrocarbons From A Secondary Gas Cap By The Injection Of A Light Hydrocarbon
Grant 3,762,474 - Allen , et al. October 2, 1 | 1973-10-02 |
Secondary Oil Recovery Method
Grant 3,759,326 - Christopher , et al. September 18, 1 | 1973-09-18 |
Method Of Treating A Subterranean Hydrocarbon-bearing Formation
Grant 3,638,727 - Allen , et al. February 1, 1 | 1972-02-01 |
Oil Recovery Process Using Dilute Acid
Grant 3,616,852 - Allen November 2, 1 | 1971-11-02 |
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