公开(公告)号：US10253609B2

公开(公告)日：2019-04-09

申请号：US14264664

申请日：2014-04-29

Applicant: Ecolab USA Inc.

Inventor： Kin-Tai Chang ,  Eldon Dwyann Dalrymple

IPC: E21B43/28 ,  C09K8/588 ,  C09K8/72

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.

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。