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。

公开(公告)号：WO2018081063A1

公开(公告)日：2018-05-03

申请号：PCT/US2017/058001

申请日：2017-10-24

Applicant: ECOLAB USA, INC.

Inventor： PHAN, Tri ,  NGUYEN, Duy T. ,  PHAN, Jenny L. ,  HSU, Tzu-ping

IPC: C09K8/584 ,  E21B43/16

CPC classification number: C09K8/584 ,  C09K2208/12 ,  C09K2208/28 ,  C09K2208/32 ,  E21B43/16

Abstract: Disclosed herein are compositions and methods for increasing recovery, or flowback, of hydrocarbon compounds from hydrocarbon-containing subterranean reservoirs. The flowback compositions include an anionic sulfonated surfactant, an amphoteric surfactant, water, and a coupling agent. The flowback compositions convert oil-wet rocks to water-wet, yet exhibit a low tendency of composition components to sorb to the rock. The flowback compositions do not cause formation of emulsions with hydrocarbon compounds within the subterranean environment. The flowback compositions are particularly useful for increasing the yield of hydrocarbons recovered from tight shale reservoirs.

Abstract translation: 本文公开了用于增加来自含烃地下储层的烃化合物的回收或返排的组合物和方法。 回流组合物包括阴离子磺化表面活性剂，两性表面活性剂，水和偶联剂。 回流组合物将油润湿的岩石转化成水湿的，但组合物组分吸收岩石的倾向低。 回流组合物不会在地下环境内形成与烃化合物的乳液。 回流组合物对于提高从致密页岩储层回收的烃的产量特别有用。