公开(公告)号：WO2019059890A1

公开(公告)日：2019-03-28

申请号：PCT/US2017/052231

申请日：2017-09-19

Applicant: HALLIBURTON ENERGY SERVICES, INC.

Inventor： RAVI, Krishna, M. ,  MISHRA, Vaishali ,  PANGU, Ganesh, S. ,  PATIL, Sandip ,  KADAM, Sunita, Sameer ,  PATIL, Rahul, Chandrakant

IPC: C09K8/40 ,  C09K8/38 ,  C09K8/035 ,  C09K8/44

Abstract: Included are compositions, methods, and systems for mitigating annular pressure buildup in a wellbore. An example method comprises introducing a spacer fluid into an annulus of the wellbore, wherein the spacer fluid comprises an aqueous base fluid, an acid swellable polymer, and a hydrolysable ester. The method further comprises allowing or causing to allow at least a portion of the spacer fluid to remain in the annulus; and allowing or causing to allow a temperature to increase in the annulus to the temperature sufficient to hydrolyze the hydrolysable ester; wherein hydrolysis of the hydrolysable ester produces an acid; wherein the acid reacts with the acid swellable polymer to produce a salt; and wherein the produced salt has a thermal expansion coefficient less than that of the aqueous base fluid.

公开(公告)号：WO2016053237A1

公开(公告)日：2016-04-07

申请号：PCT/US2014/058030

申请日：2014-09-29

Applicant: HALLIBURTON ENERGY SERVICES, INC.

Inventor： MISHRA, Vaishali ,  KADAM, Sunita, Sameer ,  PATIL, Rahul, Chandrakant

IPC: C04B24/24 ,  C04B26/02 ,  C04B16/04

CPC classification number: C09K8/44 ,  C04B26/06 ,  C04B28/02 ,  C08F220/34 ,  C09K8/473 ,  E21B33/13 ,  E21B33/14 ,  C04B24/2641 ,  C04B38/02 ,  C04B24/2676 ,  C04B24/2623 ,  C04B24/2652

Abstract: A method of treating a subterranean formation includes introducing cement composition into a wellbore, the cement composition including a pumpable slurry of cement comprising a copolymer capable of swelling in a gaseous environment. A composition includes a pumpable slurry of cement comprising a copolymer capable of swelling in a gaseous environment.

Abstract translation: 处理地下地层的方法包括将水泥组合物引入井眼中，所述水泥组合物包括水泥浆的可泵送浆料，其包含能够在气态环境中膨胀的共聚物。 组合物包括水泥的可泵送浆料，其包括能够在气态环境中溶胀的共聚物。