Wells – Processes – Specific propping feature
Reexamination Certificate
2009-07-22
2011-11-29
Neuder, William P (Department: 3672)
Wells
Processes
Specific propping feature
Reexamination Certificate
active
08066068
ABSTRACT:
A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture. The channelant can be dissolvable particles, initially acting as a filler material during placement of the proppant in the fracture, and later dissolving to leave the flow channels between the proppant pillars. The well treatment fluid can include fibers to provide reinforcement and consolidation of the proppant and, additionally or alternatively, to inhibit settling of the proppant in the treatment fluid.
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Brown J. Ernest
Kosarev Ivan
Lesko Timothy
Medvedev Anatoly
Willberg Dean
Cate David
Greene Rachel
Griffin Jeff
Neuder William P
Schlumberger Technology Corporation
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