03946812 is referenced by 92 patents and cites 5 patents.

One embodiment includes an oil recovery process, more particularly a secondary or tertiary type crude oil recovery process utilizing a drive fluid to move a displacing fluid through a subterranean formation wherein the displacing fluid displaces crude oil therefrom and is driven through the formation by means of the drive fluid. The crude oil recovery process is improved by utilizing as the drive fluid a thickened, transparent, aqueous solution of a water-soluble sulfated, polyethoxylated C.sub.10 -C.sub.18 primary alcohol or alkylated phenol. The displacing fluid is generally an aqueous surfactant solution, a miscible displacing medium or most preferably a microemulsion. In a further embodiment, the water-soluble, polyethoxylated C.sub.10 -C.sub.18 primary alcohol or alkylated phenol is employed as a mobility control agent in a waterflood thereby increasing the sweep efficiency thereof.

Title
Use of materials as waterflood additives
Application Number
430330
Publication Number
3946812
Application Date
March 12, 1975
Publication Date
March 30, 1976
Inventor
Rhoderick K Saunders
Baytown
TX, US
Thomas L Ashcraft Jr
Baytown
TX, US
Walter W Gale
Houston
TX, US
Agent
Gary D Lawson
Lewis H Eatherton
Assignee
Exxon Production Research Company
TX, US
IPC
E21B 43/22
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