公开(公告)号：US10273398B2

公开(公告)日：2019-04-30

申请号：US14893576

申请日：2014-07-31

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Chun Liu ,  Carol E. Mohler ,  Theodore Tysak ,  Paul Mercando ,  Kacee B. Ender ,  Disha Jain

IPC: E21B43/16 ,  C09K8/536 ,  C09K8/03 ,  C09K8/516 ,  E21B37/00

Abstract: A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including a metal crosslinked acrylic polymer. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and peroxide released, by a change in pH. In a wellbore, this pH change can be effected by using produced fluids to lower the pH of a more basic wellbore fluid.

公开(公告)号：US20160130497A1

公开(公告)日：2016-05-12

申请号：US14893576

申请日：2014-07-31

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  ROHM AND HAAS COMPANY

Inventor： Chun Liu ,  Carl E. Mohler ,  Theodore Tysak ,  Paul Mercando ,  Kacee B. Ender ,  Disha Jain

IPC: C09K8/536 ,  E21B37/00

CPC classification number: C09K8/536 ,  C09K8/03 ,  C09K8/516 ,  C09K2208/26 ,  E21B37/00

Abstract: A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including a metal crosslinked acrylic polymer. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and peroxide released, by a change in pH. In a wellbore, this pH change can be effected by using produced fluids to lower the pH of a more basic wellbore fluid.

Abstract translation: 包括过氧化物可降解聚合物和包封的过氧化物源的井眼流体​​。 过氧化物可降解聚合物可以是多糖。 过氧化物源可以包括无机过氧化物，包括锌和碱土金属过氧化物，例如过氧化镁。 封装材料可以是聚合物，包括金属交联的丙烯酸类聚合物。 通常可以通过过氧化物源释放过氧化物，通过pH可以通过pH的变化使过氧化物源活化，并释放过氧化物。 在井眼中，这种pH值变化可以通过使用产生的流体来降低更基本的井眼流体​​的pH来实现。