US 11,814,583 B2
Diverting agents for well stimulation
Fakuen Frank Chang, Houston, TX (US); and Wenwen Li, Pearland, TX (US)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jul. 7, 2021, as Appl. No. 17/369,149.
Claims priority of provisional application 63/055,005, filed on Jul. 22, 2020.
Prior Publication US 2022/0025251 A1, Jan. 27, 2022
Int. Cl. C09K 8/88 (2006.01); C09K 8/60 (2006.01); C09K 8/70 (2006.01)
CPC C09K 8/887 (2013.01) [C09K 8/604 (2013.01); C09K 8/703 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of treating a subterranean formation penetrated by a wellbore and comprising a flow channel protruding from an outside diameter of the wellbore into the subterranean formation, the method comprising
introducing into the flow channel a diverting agent that is adapted to expand in response to an increase in size or volume of the flow channel thereby maintaining or increasing a contact area between the diverting agent and an inner surface of the flow channel,
wherein the diverting agent comprises a flexible porous polyurethane material and introducing the diverting agent into the flow channel comprises introducing into the flow channel a liquid pre-polymer blend comprising a polyisocyanate component and a polyol component which chemically react in the flow channel to produce the flexible porous polyurethane material.