Methods for controlling screenouts

Details Methods for controlling screenouts Methods for controlling screenouts

2005-09-06

2005-09-06

Bagnell, David (Department: 3672)

Wells

Processes

Specific propping feature

C166S308100, C166S283000, C166S300000, C507S924000, C507S203000

Reexamination Certificate

active

06938693

ABSTRACT:
Methods are presented to induce a screenout during a subterranean formation fracturing or combined fracturing and gravel packing treatment by laying down a filter cake early in the treatment, then injecting proppant slurry, and then while proppant slurry injection continues chemically damaging the filter cake with one or more filter cake degradation agents so that leak-off increases, the concentration of proppant in the fracture increases, and the proppant screens out. The additional use of filter cake degradation agent aids and bridging-promoting materials is included.

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