兼探技术在海上复杂断块油田实施开发中的应用

APPLICATION OF CONCURRENTLY PROSPECTING TECHNOLOGY IN COMPLEX OFFSHORE FAULT-BLOCK OILFIELD

海上复杂断块油气田油田开发方案实施面临着井少、评价程度有限、断裂系统复杂、认识程度不足等问题,为规避实施风险和发现潜力,利用油气判别技术和开发井兼探技术展开复杂断块油气田兼探技术的研究。首先在方案实施前利用地震属性进行油层判别技术,并预测其开发潜力;然后在实施中利用开发井平面上扩边兼探和相邻断块潜力兼探加以落实,根据增加或落实的储量提出新的优化调整方案。研究和应用结果表明,兼探技术已经在南海西部M和N油田实施中得到成功应用,并取得了巨大成功。M和N油田探明地质储量较油田开发方案阶段分别增长95%和116%,并新增了5口开发井方案,兼探技术将对海上复杂断块油气藏的开发建设具有普遍的指导意义。

There are some problems existent in complex offshore fault- block oilfield development,such as fewer wells,limited evaluation,complex fault system,and lack of awareness etc. In order to avoid development risks and discover the potential resources,oil- gas identification technology and develop-ment well concurrently prospecting technology are used to study exploration technology of complex offshore fault- block oil- gas field. First,using seismic attributes predicted the development potential,then,in the meantime of development wells prospecting,the potential resources of fault- block oilfield was also prospected,last a new oilfield development plan was proposed according to the additional OOIP. Research and application results showed that concurrently prospecting technology has been successfully applied in M and N oilfield of the western South China Sea. The proved reserves of M and N oilfield respectively grew 95% and 116% than the Oilfield Development Plan stage.