海上油田开发井网密度效果分析

THE EFFECTIVENESS ANALYSIS OF DENSITY OF PATTERN IN THE DEVELOPMENT OF OFFSHORE OILFIELD

采用较密的井网开发海上油田是提高开发效果的主要因素。实践说明，油井的井距不宜太大。在海上油田不易大量进行增产措施的情况下，密井网可以更好地利用边角地区的储量；减少油藏内的死油区；加速油田开发，保持较高的稳产期和提高采出程度；注水开发的油田，还可提高水驱油效率。开采油田必须考虑中后期的开发调整措施，进行机械采油，采取必要的稳产措施，进一步提高油田最终采收率。

Adopt the denser pattern to develop the offshore oilfield is the main factor to enhance the development effectiveness.Practice shows that the spacing between the oil wells is not suitable for too large,under the offshore oilfield conditions,i.e.it is not easy to adopt a large number measures of enhance yields.The dense pattern could make use of the reserve of bits and pieces areas,and decrease the dead oil area in the oil reser- voir,and accelerate the development of the oil field to hold a higher stable yields period and to enhance the recovery,and enhance the water displacement efficiency when adopt the waterflood development.It must be considered the adjust measures of development of the middle and late period in the development of offshore oil field,to adopt mechanical recovery and the other necessary measures of stable yields to further enhance the final recovery efficiency.