公开(公告)号：WO2017019665A1

公开(公告)日：2017-02-02

申请号：PCT/US2016/043995

申请日：2016-07-26

Applicant: ECOLAB USA INC.

Inventor： FAUST, Marcus, Jr. ,  PHAN, Tri ,  EDOVIA, Theophilus ,  HANCOCK, Matthew

IPC: C11D7/22 ,  C09K8/52 ,  C09K8/588 ,  C09K8/34

CPC classification number: C09K8/524 ,  C09K8/528 ,  C09K8/532 ,  E21B37/06 ,  E21B43/126

Abstract: The present invention generally relates to methods for removing deposits in an oil or gas well by contacting the annular fluid in a batch-wise method with an effective amount of a composition comprising a water-soluble copolymer. These methods are advantageous because they can be used as needed to improve well operation. The methods use a water-soluble copolymer comprised of an acrylamide monomer and one or more cationic monomer.

Abstract translation: 本发明一般涉及通过以间歇方式使环状流体与有效量的包含水溶性共聚物的组合物接触来除去油或气井中的沉积物的方法。 这些方法是有利的，因为它们可以根据需要使用以改善井的操作。 该方法使用由丙烯酰胺单体和一种或多种阳离子单体组成的水溶性共聚物。