1
Wilmer A Hoyer: In situ process for recovery of carbonaceous materials from subterranean deposits. Exxon Production Research Company, Gary D Lawson, Michael A Nametz, May 30, 1978: US04091869 (235 worldwide citation)

A method is disclosed for recovering carbonaceous material from a subterranean deposit such as oil shale. A first zone of the subterranean deposit is heated to liquefy and vaporize carbonaceous materials contained therein. A substantial portion of the carbonaceous materials are removed from this fir ...


2
Steven R Erbstoesser, Claude E Cooke Jr, Richard G Sinclair, Michael M Epstein: Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion. Exxon Production Research Company, Hubert E Cox, Gary D Lawson, January 5, 1988: US04716964 (218 worldwide citation)

Plugging perforations in casing in a wellbore penetrating a subterranean formation using degradale ball sealers. The ball sealer used is composed of a polyester polymer which is substantially insoluble in the wellbore fluid. The polymer degrades in the presence of water at an elevated temperature to ...


3
Robert Arthur Neath: Subsea hydraulic choke. Exxon Production Research Company, Gary D Lawson, Salvatore J Casamassima, September 6, 1977: US04046191 (168 worldwide citation)

An improved method and apparatus used for offshore drilling operations is disclosed which is particularly useful in those operations where a floating vessel or drilling platform is situated at the surface of a body of water with a riser assembly extending between the platform and the well and a blow ...


4
Roger Moore Butler: Method for oil recovery using a horizontal well with indirect heating. Exxon Production Research Company, Gary D Lawson, April 25, 1978: US04085803 (121 worldwide citation)

Disclosed is a method for recovering hydrocarbons from a subterranean formation. A heated fluid is injected into the formation by means of a perforated conduit which is positioned substantially horizontally through the formation to heat hydrocarbons within the formation. After a suitable heating per ...


5
Larry A Watkins, John W Graham: Method of gravel packing a well. Exxon Production Research Company, Michael A Nametz, Gary D Lawson, November 28, 1978: US04127173 (105 worldwide citation)

A method of forming a gravel pack in a wellbore is disclosed which involves disposing a pipe adjacent the incompetent formation, depositing gravel around the pipe, consolidating the resulting gravel bed using a suitable resinous material, and removing the pipe to leave a high permeability, high stre ...


6
Harry R Hanson, Hollis A Baugh, Thomas W Childers, James B Greer: Well packers using metal to metal seals. Exxon Production Research Company, Michael A Nametz, Gary D Lawson, November 28, 1978: US04127168 (95 worldwide citation)

An improved well packer for use in sour gas wells is disclosed. The improved packer includes a cylindrical mandrel encircled with a resilient metal seal ring, means for anchoring the packer at a predetermined vertical depth, means for radially expanding the seal rings so as to cause sealing engageme ...


7
Steven R Erbstoesser: Method and apparatus for placing buoyant ball sealers. Exxon Production Research Company, Gary D Lawson, Robert B Martin, February 12, 1980: US04187909 (94 worldwide citation)

A method and apparatus are described for diverting fluid when treating a subterranean formation penetrated by a well provided with casing having a plurality of perforations. Ball sealers having a density less than fluid in the casing are lowered down the casing between upper perforations and lower p ...


8
Walter W Gale, Thomas L Ashcraft Jr, Rhoderick K Saunders: Use of materials as waterflood additives. Exxon Production Research Company, Lewis H Eatherton, Gary D Lawson, March 30, 1976: US03946812 (92 worldwide citation)

One embodiment includes an oil recovery process, more particularly a secondary or tertiary type crude oil recovery process utilizing a drive fluid to move a displacing fluid through a subterranean formation wherein the displacing fluid displaces crude oil therefrom and is driven through the formatio ...


9
David R Converse, Stephen M Hinton, Glenn B Hieshima, Robert S Barnum, Mohankumar R Sowlay: Process for stimulating microbial activity in a hydrocarbon-bearing, subterranean formation. ExxonMobil Upstream Research Company, Gary D Lawson, April 8, 2003: US06543535 (73 worldwide citation)

A process is disclosed for stimulating the activity of microbial consortia in a subterranean formation to convert hydrocarbons to methane, which can be produced. Fluid and rock of the formation are analyzed. The presence of microbial consortia is determined and a characterization made (preferably ge ...


10
Eugene R Thomas, Ronald R Bowen, Eric T Cole, Edward L Kimble: Process for liquefaction of natural gas. Exxon Production Research Company, Gary D Lawson, February 15, 2000: US06023942 (65 worldwide citation)

This invention relates to a process for liquefying a gas stream rich in methane and having a pressure above about 3103 kPa (450 psia). The gas stream is expanded to a lower pressure to produce a gas phase and a liquid product having a temperature above about -112.degree. C. (-170.degree. F.) and a p ...