多项剩余油研究技术在五里湾长6油藏开发中的应用

The application for researching technology of multinomial remaining oil in the development of Wuliwan Chang 6 reservoir

五里湾长6油藏自1996年投入开发试验,1997年采用反九点面积注水井网为主注水开发以来,保持高效开发至今已有14年。2007年综合含水突破20%,进入中含水开发阶段后,随着采出程度的增大,油层普遍见水,平面、剖面矛盾加剧,剩余油分布规律日趋复杂,控水稳油形势日益严峻。充分利用动态分析法、沉积相法、剩余油测试技术、数值模拟技术及检查井等多种方法,较为准确地描述了五里湾长6油藏剩余油分布规律,并对剩余油挖潜技术应用及效果进行了系统总结与评价,探索出了符合五里湾长6油藏剩余油分布研究的科学方法及挖潜技术,对同类油藏开发具有一定指导意义。

Wuliwan Chang 6 reservoir developed in 1996. And the inverted nine spot water flooding pattern has been the main kind of flooding technique in Wuliwan Chang 6 reservoir from 1997. The composite water cut broke 20 % in 2007. The water breakthrough is popular in oil layer in the stage of middle water content development, as well as the degree of reserve recovery increased. The rule of the distribution about remaining oil is becoming more sophisticated. And the situation of controlling water and oil is more severe. This paper adopted dynamic analysis, remaining oil testing technology, numerical analogue technology, precipitation facie, and inspection well, to describe the rule of distribution about remaining oil for Wuliwan Chang 6 reservoir accurately. And it evaluated and sum up the technology of remaining oil exploring and its effect systematically. It find an appropriate method and exploring technology for the rule of the distribution about remaining oil of Wuliwan Chang 6 reservoir, and guide the development of similar reservoir.