海上中深层断块油田滚动开发研究及实践——以J油田沙河街组为例

Study and Practice on the Progressive Development of Offshore Medium-Deep Fault-block Oilfield: A Case Study of Shahejie Formation in J Oilfield

孙红杰 金宝强 杨志成 郑华

SUN Hongjie JIN Baoqiang YANG Zhicheng ZHENG Hua

中海油田服务股份有限公司, 天津 300450; 中海石油(中国)有限公司天津分公司, 天津 300452

China Oilfield Services Limited, Tianjin 300450, China; Tianjin Branch of CNOOC Limited, Tianjin 300452, China

J油田为渤海湾盆地典型的中深层复杂断块油田，具有总体储量探明程度低，潜力分布零散，评价难度大等特点，利用钻井、岩心、测井、测压、地震等资料，通过开展储层综合研究，明确了沙河街组物源方向、沉积主控因素、储层展布规律，并且结合区域油气成藏条件及油气分布规律分析，构建了油田相邻断块、层间、边部、水层恢复4类潜力及立体成藏模式。针对油田储层及潜力分布情况，建立了6种潜力兼顾评价模式，相继评价落实了13个潜力层及3个潜力断块，新增探明石油地质储量650×104 t，优化调整后增加调整井15口，预计增加可采储量100×104 t，实现了较好的经济效益。

J Oilfield, a typical complex fault block oilfield with medium-deep burial depth in Bohai Bay Basin, is characterized by low degree of overall proved reserves, scattered distribution of potential reserves and increasing difficulty in the evaluation. Based on the comprehensive analysis of relevant drilling, core, logging, pressure and seismic data, the authors carry out the comprehensive study of reservoir, explicit the source direction of Shahejie Formation, controlling factors in sedimentation and the distribution rule of reservoir. Combined with the analysis of regional accumulation conditions, oil and gas distribution in J oil field, 4 kinds of potential areas accumulation models i.e. oil-gas reservoir in the adjacent fault block, in the interlayer, in the edge and recovered from water layer are summarized in J Oilfield. In view of the reservoir and the potential distribution in J Oilfield, 6 kinds of potential and evaluation model are established and successively applied in the evaluation of 13 potential oil-saturated layers and 3 fault blocks with exploration potential. As a result, 6.5 million tons of proven oil geological reserves has been increased, 15 adjustment wells after optimizing and adjusting are deployed, and one million tons of recoverable reserves to be increased can be expected. Meanwhile, good economic benefits are also achieved.

https://doi.org/10.3969/j.issn.1008-2336.2016.02.056