1
Dennis J Graue: Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking. World Energy Systems Incorporated, Arthur F Zobal, Geoffrey A Mantooth, December 11, 2001: US06328104 (288 worldwide citation)

A process is disclosed for the in situ conversion and recovery of heavy crude oils and natural bitumens from subsurface formations using either a continuous operation with one or more vertical injection boreholes and one or more vertical production boreholes in which multiple, uncased, horizontal bo ...


2
Armand A Gregoli, Daniel P Rimmer: Production of synthetic crude oil from heavy hydrocarbons recovered by in situ hydrovisbreaking. World Energy Systems Incorporated, January 25, 2000: US06016868 (286 worldwide citation)

An integrated process is disclosed for treating, at the surface, production fluids recovered from the application of in situ hydrovisbreaking to heavy crude oils and natural bitumens deposited in subsurface formations. The production fluids include virgin heavy hydrocarbons, heavy hydrocarbons conve ...


3
Armand A Gregoli, Daniel P Rimmer, Dennis J Graue: Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking. World Energy Systems Incorporated, January 25, 2000: US06016867 (282 worldwide citation)

A process is disclosed for the in situ conversion and recovery of heavy crude oils and natural bitumens from subsurface formations using either a continuous operation with one or more injection and production boreholes, which may include horizontal boreholes, or a cyclic operation whereby both injec ...


4
Charles H Ware, Leslie C Rose, Joseph C Allen: Recovery of oil by in situ hydrogenation. World Energy Systems, Arthur F Zobal, July 1, 1986: US04597441 (278 worldwide citation)

In a method of recovering petroleum from underground formations penetrated by a production well, superheated steam and then hot hydrogen are injected by way of the well into a preheated formation zone next to the well. The hydrogen is injected under sufficient pressure to cause hydrogenation of the ...


5
Leslie C Rose, Joseph T Hamrick: Multistage gas generator. World Energy Systems, Allan R Fowler, April 22, 1980: US04199024 (173 worldwide citation)

A multistage gas generator for use in a borehole for recovering hydrocarbons from the subsurface formations. The gas generator has an upper end and a lower restricted outlet. A pilot stage is located at the upper end and a plurality of spaced apart intermediate stages are located between the pilot s ...


6
Joseph T Hamrick, Leslie C Rose: Downhole recovery system. World Energy Systems, Wofford Felsman Fails & Zobal, September 28, 1976: US03982591 (110 worldwide citation)

The specification discloses a recovery process and system wherein hydrogen and oxygen are introduced into a vented pressure vessel, known as a gas generator, located at the bottom of a borehole, and ignited and burned to produce steam. The hydrogen and oxygen may be introduced either as a stoichiome ...


7
Joseph T Hamrick, Leslie C Rose: In situ hydrogenation of hydrocarbons in underground formations. World Energy Systems, Wofford Felsman Fails & Zobal, September 28, 1976: US03982592 (97 worldwide citation)

A process and system for insitu hydrogenation employing a gas generator in a borehole for burning a hydrogen-rich mixture of hydrogen and oxygen. The gas generator comprises a housing forming a chamber with a combustion zone at one end and a restricted outlet at the other end. A cooling annulus surr ...


8
Joseph T Hamrick, Leslie C Rose: Heat pump operated by wind or other power means. World Energy Systems, Arthur F Zobal, December 8, 1981: US04304103 (62 worldwide citation)

A heating and/or cooling system comprising a windmill for driving a first refrigerant compressor in parallel with a second refrigerant compressor driven by an electric motor or other power means. The second compressor operates the system when the wind velocity is low. When the wind velocity becomes ...


9
Joseph T Hamrick, Leslie C Rose: Downhole recovery system. World Energy Systems, Arthur F Zobal, March 14, 1978: US04078613 (40 worldwide citation)

A gas generator for use in a borehole for generating steam and other hot gases for use in recovering hydrocarbons or other fluids from underground formations. The gas generator comprises a housing forming a chamber with a combustion zone at one end and a restricted outlet at the other end. A second ...


10
John E Langdon, Charles H Ware: Process for dispersing nanocatalysts into petroleum-bearing formations. World Energy Systems, Patterson & Sheridan, May 11, 2010: US07712528 (34 worldwide citation)

Embodiments include methods for recovering petroleum products from a formation containing heavy crude oil. In one embodiment, a method includes flowing a catalytic material containing the nanocatalyst into the formation containing the heavy crude oil and exposing the heavy crude oil and the catalyti ...