公开(公告)号：US3437451A

公开(公告)日：1969-04-08

申请号：US3437451D

申请日：1965-12-28

Applicant: CONTINENTAL OIL CO

Inventor： EVERY RICHARD L ,  THIEME JAMES O ,  CASAD BURTON M

IPC: C01D17/00 ,  B01J17/06

CPC classification number: C01D17/006

公开(公告)号：US3924681A

公开(公告)日：1975-12-09

申请号：US35563573

申请日：1973-04-30

Applicant: CONTINENTAL OIL CO

Inventor： CLARK CHARLES R ,  GREGORY M DUANE ,  CASAD BURTON M ,  KREHBIEL DELMAR D ,  KENNEDY CARL D

IPC: C09K8/584 ,  E21B43/22

CPC classification number: C09K8/584 ,  Y10S507/936

Abstract: An improved anionic waterflood additive is prepared by sulfonating a crude oil having an API gravity of at least 25 and an aromatic hydrocarbon content of at least 15 percent by weight; neutralizing the sulfonated crude oil with a base component such as an alkali metal hydroxide, ammonium hydroxide, or an alkali metal carbonate; and overbasing the sulfonate by admixing with an excess of base component such that the ratio: ''''weight of excess base component/weight of sulfonate'''' is about 0.03 to about 3.0. The anionic waterflood additive is injected into a petroliferous formation, the formation is waterflooded and oil is recovered.

公开(公告)号：US3424662A

公开(公告)日：1969-01-28

申请号：US3424662D

申请日：1965-10-15

Applicant: CONTINENTAL OIL CO

Inventor： HUDGINS CHARLES M JR ,  CASAD BURTON M ,  HADEN ELARD L

IPC: F17C3/00 ,  B01K5/00

CPC classification number: F17C3/005 ,  F17C2203/0639 ,  F17C2203/0646 ,  F17C2203/0678 ,  F17C2221/033 ,  F17C2221/035 ,  F17C2223/0161 ,  F17C2223/033 ,  F17C2270/0152