04683943 is referenced by 47 patents and cites 8 patents.

Subterranean oil and gas producing formations are fractured by providing one or more combustion gas generating units using rocket fuel type propellants disposed in a well casing at preselected depths. The well casing is filled with a compressible hydraulic fracturing fluid comprising a mixture of liquid, compressed gas, and propant material and precompressed to a pressure of about 1,000 psi or more greater than the fracture extension pressure at the depth of the zone to be fractured. At least one of the gas generating units is equipped with perforating shaped charges to form fluid exit perforations at the selected depth of the fracture zone. The gas generating units are simultaneously ignited to generate combustion gasses and perforate the well casing. The perforated zone is fractured by the rapid outflow of an initial charge of sand free combustion gas at the compression pressure followed by a charge of fracturing fluid laden with propant material and then a second charge of combustion gas. The column of precompressed fracturing fluid is discharged into the formation until the hydraulic extension pressure is reached and eventually the perforations sanded off.

Title
Well treating system for stimulating recovery of fluids
Application Number
686990
Publication Number
4683943
Application Date
July 24, 1986
Publication Date
August 4, 1987
Inventor
Kenell J Touryan
Indian Hills
CO, US
Richard S Passamaneck
Littleton
CO, US
Gilman A Hill
Englewood
CO, US
Agent
Hubbard Thurman Turner & Tucker
Assignee
Mt Moriah Trust
CO, US
IPC
E21B 43/11
E21B 29/02
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