公开(公告)号：US20170107423A1

公开(公告)日：2017-04-20

申请号：US15293940

申请日：2016-10-14

Applicant: RHODIA OPERATIONS

Inventor： SueAnn LIM ,  Rose NDONG ,  Lingjuan SHEN ,  Ahmed RABIE ,  Manilal S. DAHANAYAKE

IPC: C09K8/74 ,  E21B43/25

CPC classification number: C09K8/74 ,  C09K8/528 ,  C09K2208/12 ,  C09K2208/32 ,  E21B43/25

Abstract: Methods of acidizing a subterranean formation penetrated by a wellbore that include the steps of (a) injecting into the wellbore at a pressure below subterranean formation fracturing pressure a treatment fluid having a first viscosity and including an aqueous acid and a gelling agent of Formula II: wherein R1 is (CxHy), wherein x ranges from 17 to 21 and y=2x+1 or 2x−1; R5 is hydrogen or —CH3; R6 is —CH2—CH2—CH2—; and R2, R3, and R4 are each —CH3; (b) forming at least one void in the subterranean formation with the treatment fluid; and (c) allowing the treatment fluid to attain a second viscosity that is greater than the first viscosity.