公开(公告)号：WO2017066585A1

公开(公告)日：2017-04-20

申请号：PCT/US2016/057063

申请日：2016-10-14

Applicant: RHODIA OPERATIONS ,  LIM, SueAnn ,  NDONG, Rose ,  SHEN, Lingjuan ,  RABIE, Ahmed ,  DAHANAYAKE, Manilal, S.

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

IPC: C09K8/68 ,  C09K8/035 ,  C09K105/00

CPC classification number: C09K8/74 ,  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 R 1 is (C x H y ), wherein x ranges from 17 to 21 and y = 2x+1or 2x-1; R 5 is hydrogen or -CH 3 ; R 6 is -CH 2 -CH 2 -CH 2 -; and R 2 , R 3 , and R 4 are each -CH 3 ; (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.

Abstract translation: 酸化被井筒穿透的地下地层的方法，其包括以下步骤：（a）在低于地下地层压裂压力的压力下将具有第一粘度并包括含水酸的处理流体注入井筒中 和式（II）的胶凝剂：其中R 1为（C≡Hy），其中x为17至21，并且 y = 2x + 1或2x-1; R 5是氢或-CH 3 3; R 6是-CH 2 -CH 2 -CH 2 -CH 2 - 。 且R 2，R 3和R 4各自为-CH 3 3;以及R 2，R 3和R 4各自为-CH 3。 （b）用所述处理流体在所述地下地层中形成至少一个空隙; 和（c）使处理流体达到大于第一粘度的第二粘度。