公开(公告)号：US3874454A

公开(公告)日：1975-04-01

申请号：US45894274

申请日：1974-04-08

Applicant: CONTINENTAL OIL CO

Inventor： CLARK CHARLES R ,  GREGORY M DUANE ,  KERFOOT OLIVER C ,  VEATCH FRED C ,  KREHBIEL DELMAR D ,  KENNEDY CARL D

IPC: C09K8/58 ,  E21B43/22

CPC classification number: C09K8/584 ,  C09K8/58 ,  Y10S507/936

Abstract: An overbased anionic waterflood additive comprising a watersoluble low molecular weight alkali metal hydrocarbon sulfonate having an equivalent weight of about 200 to about 400 plus a water-insoluble high molecular weight alkali metal hydrocarbon sulfonate having an equivalent weight of about 400 to about 600 plus an overbasing amount of base component such as an alkali metal hydroxide is prepared and is injected into a petroliferous formation to improve a waterflood process. Sufficient overbasing base component is employed that the ratio ''''weight of excess base component/weight of sulfonate'''' is about 0.03 to about 2.0.

Abstract translation: 一种高碱性阴离子注水添加剂，其包含当量为约200至约400的水溶性低分子量碱金属烃磺酸盐，加上当量为约400至约600加的水不溶性高分子量碱金属烃磺酸盐 制备高碱度碱金属氢氧化物等碱成分，并将其注入含油层中以改善注水方法。 使用足够的高碱性基料组分，“过量碱组分的重量/磺酸盐的重量”的比例为约0.03至约2.0。