Method for hydraulic fracture propagation in hydrocarbon...

Details Method for hydraulic fracture propagation in hydrocarbon... Method for hydraulic fracture propagation in hydrocarbon...

E - Fixed Constructions

21

B

166/21

E21B 43/26 (2006.01) E21B 47/06 (2006.01) E21B 49/00 (2006.01)

Patent

CA 1278510

ABSTRACT OF THE DISCLOSURE A hydrocarbon-bearing strata in a hydrocarbon producing well is fractured using a fracture pressure which will not propagate the fracture into adjacent overlying and underlying non-producing strata. The least principal - compressive stress S3 of the hydrocarbon bearing strata and the adjacent overlying and underlying strata are determined by the relationship Image where S1 is the maximum principle compressive stress, PF is the pore fluid pressure, and u is the coefficient of friction. The fracturing pressure is selected to be greater than S3 for the hydrocarbon bearing strata but less than S3 for the adjacent overlying and underlying non-producing strata. Hydrocarbon bearing formations suitable for hydraulic fracturing can also be identified.

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