Abstract: A fault-block oil field generally yields high output in the initial stage of its development.But it can hardly maintain a stable production for a comparatively long time,primarily due to its limited size and to its being bounded by faults.Great lithologic variations of continental deposits and occurrence of many barriers of dense rocks are also contributory,while the ill-adaptability of well pattern to the reservoir that leaves a considerable amount of reserve untapped is another cause of rapid decline of production With the fault block as a unit,the overall readjustment made in Dagang is based on the well pattern adopted in the initial stage to cope with the pro-blems arising in the course of development,to prolong the period of stabilized production and to raise the rate of recovery by water displacement from time to time.Satisfactory result has been achieved,as in the last four years,the overall annual rate of decline of production has been reduced from 20.1% to 10.5%.

摘要： 断块油田投入开发的初期,一般具有较高的生产能力.但是很难做到较长时间的稳产.主要原因是断块面积比较小,周围有断层遮挡,同时陆相沉积岩变化大,初期开发井网对油层适应性较差,储量有效动用程度低所致.综合调整就是在初期开发井网的基础上,根据对油层开发中暴露出问题的认识,进行以断块为单元的综合措施,延长油田稳产期,不断提高水驱采收率.大港油田近四年的综合调整结果,年产油量综合递减由20%降为10.5%,证明这种做法是行之有效的.