渤海湾盆地富油凹陷二次勘探工程及其意义  

Re-exploration program for petroleum-rich sags and its significance in Bohai Bay Basin, East China

作　　者：赵贤正 王权 金凤鸣 罗宁 范炳达 李欣[2] 秦凤启 张宏伟[3] 

机构地区：[1]中国石油华北油田公司 [2]中国石油勘探开发研究院 [3]中国石油集团东方地球物理勘探有限责任公司

出　　处：《石油勘探与开发》2015年第6期723-733,共11页Petroleum Exploration and Development

基　　金：中国石油天然气股份有限公司重大科技攻关项目(2014E-35)

摘　　要：通过系统分析渤海湾盆地富油凹陷勘探程度与勘探潜力,引出开展富油凹陷二次勘探工程的意义,阐述了富油凹陷二次勘探工程的地质理论进展、关键工程技术和勘探方法,并以饶阳凹陷为例进行勘探实践论述,展望其广阔的应用前景。资源丰度大于20×104 t/km2、石油资源量大于3×108 t的富油凹陷是渤海湾盆地油气勘探与开发的主体,目前石油探明率已达50%以上,进入了高勘探程度阶段,油气储量的发现难度越来越大。但其剩余油气资源依然丰富,待发现石油资源量约105×108 t,仍是寻找油气储量的重要方向。以渤海湾盆地冀中坳陷富油凹陷的二次勘探为例,论述了洼槽聚油、隐蔽型潜山成藏与弱构造斜坡带油气运聚特征,阐述了全凹陷整体连片三维地震勘探、相控储集层精细预测、复杂储集层改造增产和快速高效钻井等勘探技术进展,进而提出了开展新一轮次的重新整体认识、整体评价和整体部署的二次勘探工程,论证了二次勘探工程对于推动高勘探程度富油凹陷持续规模增储的重要作用。A comprehensive analysis is done to investigate the exploration maturity and exploration potential in the petroleum-rich sags in the Bohai Bay Basin, indicating that the re-exploration program is of great significance. The advances in geological theories, key engineering technologies and exploration methods involved in the re-exploration program are described. Taking the Raoyang sag as an example, the study documents how the program was conducted and discusses its promising future of application. Petroleum-rich sags, which with an oil resource abundance of greater than 20×104 t/km2 and a total oil resource of over 3×108 t, are the main domains for petroleum exploration and production in the Bohai Bay Basin. With a proven rate of more than 50%, these petroleum-rich sags have entered the high maturity exploration stage and discovery of new oil and gas reserves has become more and more difficult. However, the undiscovered oil resources in these sags are abundant and amount to 105×108 t, so that they are still the main exploration domains in the Bohai Bay Basin. With the petroleum-rich sags in the Jizhong depression of the Bohai Bay Basin as an example of the re-exploration program, the study presents a detailed documentation of oil accumulation in subsags, reservoir-forming in the subtle buried hills, and oil migration and accumulation in the weakly deformed structural slopes. It deals with the advances in the merged 3-D seismic prospecting over an entire sag, facies-based reservoir prediction, stimulation techniques for complex reservoirs and fast efficient drilling techniques. Furthermore, it proposes the re-exploration program, which comprises a new round of overall exploration philosophy, new evaluation and planning. It discusses the important roles played by the re-exploration program in sustaining the reserve additions in the highly explored petroleum-rich sags.

关 键 词：渤海湾盆地 富油凹陷 二次勘探工程 理论认识 技术方法 勘探实践 

分 类 号：TE13[石油与天然气工程—油气勘探]