Wells – Processes – With indicating – testing – measuring or locating
Patent
1990-03-08
1990-12-04
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166308, E21B 4326, E21B 4702, E21B 4902
Patent
active
049746758
ABSTRACT:
A method of forming fractures from a highly deviated or horizontal well bore penetrating a subterranean formulation. A well bore is drilled horizontally into a formation and the deviation in the direction of the well bore from the direction of the least principal horizontal stress is determined. Perforations or notches then are produced in casing cemented in the well bore. The notching is effected in such a manner that the direction of the perforation or notch is made perpendicularly to the direction of the least principal horizontal stress in the subterranean formation. A fracturing fluid then is introduced into the well bore at a predetermined rate and pressure to fracture the formation at the fracture initiation points created by the notches whereby fracture reorientation is minimized or eliminated.
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SPE 19720 entitled "Experimental Study of Hydraulic Fracture Geomerty, Initiated from Horizontal Wells" . . . Wadood El Rabaa, Oct. 8-11, 1989.
Austin Carl E.
El Rabaa A. Wadood
Rose Robert E.
Halliburton Company
Kent Robert A.
Novosad Stephen J.
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