	US 11,920,446 B2
	Methods for foam and gel injections into a well and enhanced foaming and gelations techniques
Abdulaziz S. Al-Qasim, Dammam (SA); Marwah M. Alsinan, Al Qatif (SA); Jun Gao, Dhahran (SA); and Hyung Tae Kwak, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Dec. 14, 2021, as Appl. No. 17/644,109.
Prior Publication US 2023/0184072 A1, Jun. 15, 2023
Int. Cl. E21B 43/16 (2006.01); E21B 43/00 (2006.01); E21B 47/00 (2012.01)

CPC E21B 43/166 (2013.01) [E21B 43/003 (2013.01); E21B 47/00 (2013.01)]

20 Claims

1. A method, comprising:

providing an injection well extending from a surface into a formation; and

alternatingly pumping a foam injectant and a gel injectant into the injection well;

wherein the foam injectant comprises:

a liquid phase comprising a surfactant and water; and

a gas phase comprising a gas;

wherein the gel injectant comprises a water-soluble polymer and a crosslinker; and

wherein the foam injectant and the gel injectant are injected at separate times and sequentially; and

using the injected gel injectant and the injected foam injectant to drive a reservoir fluid in the formation to a production well a distance from the injection well.