Method of Diversion and Zonal Isolation in a Subterranean Formation Using a Biodegradable Polymer

USPTO Patent Application US 2017/0081585 A1
Application Date: Mar. 23rd, 2017


Various methods for redirecting a well treatment fluid to targeted zones of a subterranean formation within a reservoir and diverting the fluid away from high permeability or undamaged zones of...
Application Number:
International Classification:
C09K 8/70 (20060101); E21B 43/26 (20060101); E21B 43/267 (20060101); C09K 8/68 (20060101); C09K 8/88 (20060101)
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What is claimed is:

1. A method of stimulating a subterranean formation penetrated by a reservoir, the method comprising: introducing into the reservoir a fluid comprising a biodegradable copolymer having the general formula of repeating units [—CHR—CH2—CO—O—] wherein R represents an alkyl group represented by CnH2n+1, and n is 1 and 3.



It is known in the art that hydraulic fracturing can be utilized to extract hydrocarbons from subterranean formations. There can be multiple potential producing zones within a single wellbore in a subterranean formation to be fractured. Often times, it is desirable to isolate these zones from one another to divert...
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