公开(公告)号：US11035080B2

公开(公告)日：2021-06-15

申请号：US15767082

申请日：2016-12-14

Applicant: ECOLAB USA INC.

Inventor： Zhiyi Zhang ,  Mingli Wei ,  Kevin McDonald ,  Weiguo Cheng ,  Pious V. Kurian

IPC: D21H17/37 ,  D21H21/10 ,  C08F220/56 ,  C08F230/06 ,  D21H21/12 ,  D21H21/28 ,  D21H21/36 ,  D21H21/50 ,  C08F220/06

Abstract: Papermaking additives that include various polymers and/or micropolymers are disclosed. The micropolymers may have a network structure that can be created by crosslinking or other means. The micropolymer may be an acrylamide based polymer having a boronic acid moiety. The weight average molecular weight of the micropolymer may be greater than 1,000,000.

公开(公告)号：US10214679B2

公开(公告)日：2019-02-26

申请号：US14804973

申请日：2015-07-21

Applicant: Ecolab USA Inc.

Inventor： Pious V. Kurian ,  Mingli Wei ,  Kin-Tai Chang

IPC: C09K8/588 ,  E21B43/16 ,  C09K8/594

Abstract: A composition including crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation. This disclosure further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations.

公开(公告)号：US20150322333A1

公开(公告)日：2015-11-12

申请号：US14804973

申请日：2015-07-21

Applicant: Ecolab USA, Inc.

Inventor： Pious V. Kurian ,  Mingli Wei ,  Kin-Tai Chang

IPC: C09K8/588 ,  E21B43/16

CPC classification number: C09K8/588 ,  C09K8/594 ,  E21B43/164

Abstract: A composition including crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation. This disclosure further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations.

Abstract translation: 一种组合物，其包含能够在低于或低于中性pH的水解的交联的可发性聚合物微粒和通过将这种组合物引入到地层中来改变地层的渗透性的方法。 本公开还涉及用于从地下储层或地层中回收烃流体的组合物和方法，所述地下储层或地层在低pH下经受二氧化碳或二氧化碳水交替气体驱油，并增加存在于地下地层中的烃类流体的动员和/或回收率。

公开(公告)号：US20190100690A1

公开(公告)日：2019-04-04

申请号：US16208775

申请日：2018-12-04

Applicant: Ecolab USA Inc.

Inventor： Pious V. Kurian ,  Mingli Wei ,  Kin-Tai Chang

IPC: C09K8/588 ,  E21B43/16 ,  C09K8/594

Abstract: A composition including crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation. This disclosure further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations.

公开(公告)号：US20170327727A1

公开(公告)日：2017-11-16

申请号：US15593776

申请日：2017-05-12

Applicant: Ecolab USA Inc.

Inventor： Daniel R. Dreyer ,  Pious V. Kurian

IPC: C09K8/528 ,  C09K8/68 ,  C09K8/80 ,  C09K8/88

CPC classification number: C09K8/528 ,  C09K8/536 ,  C09K8/68 ,  C09K8/70 ,  C09K8/80 ,  C09K8/805 ,  C09K8/882

Abstract: A coated particulate composition includes a vitreous polyphosphate glass particulate and a coating on at least a portion of the surface of the particulate, the coating comprising a water-insoluble polymer or a water-insoluble particulate, wherein the coating weight is about 0.01 wt % to 90 wt % of the mass of the coated particulate. The particulates provide long-term scale inhibition downhole in subterranean reservoirs where temperatures exceed 70° C.