Wells – Processes – Placing fluid into the formation
Patent
1993-11-15
1994-11-15
Novosad, Stephen J.
Wells
Processes
Placing fluid into the formation
166250, 166269, E21B 4326
Patent
active
053639197
ABSTRACT:
Two spaced apart zones of a formation are simultaneously hydraulically fractured. A lower density fracturing fluid is injected into an upper zone of the formation via an annulus of a perforated wellbore communicating with the upper zone thereby causing a fracture to propagate. Simultaneously therewith, a higher density fracturing fluid is injected into a lower spaced apart zone via a tube within the wellbore which fluidly communicates with the lower zone thereby causing simultaneously the propagation of a second fracture. Neither fracture contacts the other although complete fracture growth is obtained.
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Hager Jr. George W.
Malone Charles A.
McKillop Alexander J.
Mobil Oil Corporation
Novosad Stephen J.
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