Abstract: Texaco's steam flood operations in San Ardo,California is one of the largest and most recovery efficient in the world.In order to achieve this status it was necessary to step beyond the bounds of proven steam flood technology.This paper describes the steam flood development history and presents some of the San Ardo characteristics that make this a unique steam flood operation.A steam flood computer simulation study shows that the computer model used is capable of simulating the steam flood operation sequence,as practiced in the San Ardo Field.This is demonstrated by an excellent agreement between the model simulation results and those of actual injection-production data from the San Ardo steam flood.A potential steam flood recovery of 60 to 70% is indicated.

摘要： 圣阿尔道油田,原油比重0.9792～0.9930,1965年开始蒸汽驱开采试验,效果良好,推广至全油层。20英亩反九点注汽方式。蒸汽驱过程中汽向边井超越流动,在数值模拟指导下封堵边井油层上部。一个井组钻四口加密井,加密井只完成油层下部。改变方向注汽,角井改为注汽井,同时中注井改注热水。这些革新措施提高了蒸汽波及系数,原油采收率达60%左右。