Use of thin liquid spacer volumes to enhance hydraulic fracturin

Details Use of thin liquid spacer volumes to enhance hydraulic fracturin Use of thin liquid spacer volumes to enhance hydraulic fracturin

1993-12-09

1995-05-02

Suchfield, George A.

Wells

Processes

Specific propping feature

166308, E21B 43267

Patent

active

054110912

ABSTRACT:
A method for enhanced hydraulic fracturing which comprises injecting a proppant laden fracturing fluid into a formation or reservoir at a rate and pressure sufficient to fracture said formation. Next, a thin spacer fluid is injected into the created fracture. Afterwards, a proppant laden fracturing fluid is injected into the formation at a rate and pressure sufficient to hold the created fracture open which allows proppant to be more evenly distributed throughout the created fracture as proppant falls through the spacer fluid thereby avoiding proppant convection in the created fracture while obtaining substantially improved propping of the fracture.

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