复杂断块油田的滚动勘探开发

ROLLING EXPLORATION AND DEVELOPMENT OF COMPLEX FAULTED OIL FIELDS

本文回顾了断陷盆地复杂断块油田的勘探历程和认识的转变过程。复式油气呆集带的理论和滚动勘探开发技术是在断陷盆地勘探中经过长期孕育诞生的“双胞胎”。 对复杂断块油田进行滚动勘探开发，必须具备以下四个条件。（1）含油层系多，油层厚；（2）断块破碎而且油藏类型复杂；（3）已经做过地震精查并具有明显的构造及地层油藏背洗（4)预测能叠合连片含油，叠合连片部分预测达到70％以上。 在发现井取得工业油气流后，复杂断块油田滚动勘探开发最优化的程序应为：（1）精细地震详查，（2）评价性详探；（3）详探与开发相结合，（4）持续滚动勘探开发。每个阶段都有其主要任务与做法。复合型断块油田的类型多种多样，在勘探方法上要区别对待。

<ABSTRACT>In the paper, the author reviewed the exploration history and changes in the understanding of complex faulted oil fields in a faulted-subsided basin, the theory for complex oil and gas accumulation belt and the techniques for rolling exploration and development are "twins" which were born through long period of "breeding" during the exploration of faulted-subsided basins.Following four should be satisfied in order to carry out rolling exploration and development of complex faulted-subsided basinss (1) multi-oil-bearing formation series and thick oil formations; (2) irregular blocks and complex reservoir types;(3) detailed seismic prospecting and a distinct structural & strat/graphfc setting,(4) a superimposed large-scale oil-bearing area (up to greater than 70%) can be estimated.After commercial oil and gas flow has been obtained from the discovery well, the optimum program for rolling exploration and development of a complex faulted oil field should bes (1) carefully detailed seismic prospecting; (2) detailed exploration for evaluation purpose; (3) conjunction of detailed exploration with development;(4) keeping up the rolling exploration and development. Every stage has the main tasks and process of its own. There are various types of complex faulted oil fields that should be explored with different exploration methods.