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：US20150307769A1

公开(公告)日：2015-10-29

申请号：US14264664

申请日：2014-04-29

Applicant: Ecolab USA Inc.

Inventor： Kin-Tai Chang ,  Eldon Dwyann Dalrymple

IPC: C09K8/588 ,  E21B43/26 ,  E21B43/16

CPC classification number: C09K8/588 ,  C09K8/72 ,  C09K8/725 ,  C09K2208/24 ,  C09K2208/26 ,  C09K2208/28 ,  E21B43/283

Abstract: Methods for acid diversion in a hydrocarbon-containing subterranean formation are disclosed. The methods include injecting an acid diversion agent comprising a water-soluble or dispersible branched polyhydroxyetheramine and injecting an acidic solution into a well which is in contact with the hydrocarbon-containing subterranean formation. Preferably, the acid solution is diverted toward a zone of the formation that has a lower permeability to fluid than an adjacent zone. This process improves the permeability of the hydrocarbon-containing subterranean formation to hydrocarbons, while decreasing the permeability of the formation to water or brine.

Abstract translation: 公开了含烃地层中酸分解的方法。 所述方法包括注入含有水溶性或分散性支链多羟基醚胺的酸分解剂，并将酸性溶液注入与含烃地层接触的孔中。 优选地，酸溶液朝向与相邻区域相比流体的渗透性较低的地层区域转移。 该方法提高了含烃地层对烃的渗透性，同时降低了地层对水或盐水的渗透性。

公开(公告)号：US20190161670A1

公开(公告)日：2019-05-30

申请号：US16193542

申请日：2018-11-16

Applicant: ECOLAB USA INC.

Inventor： Daniel Dreyer ,  Vyacheslav Boyraskikh ,  Yuntao Thomas Hu ,  Pious Kurian ,  Joseph Paul Street ,  Narongsak Tonmukayakul ,  Kin-Tai Chang

IPC: C09K8/508 ,  E21B33/138

Abstract: Described are methods and compositions for treating a subterranean formation. The method comprising introducing into the subterranean formation via a well-bore a diverter composition, the diverter composition comprising a combination of at least one deformable particle and at least one non-deformable particle; and allowing the diverter composition to block the flow of at least a portion of a treatment fluid from a first location within the well-bore to a second location.