渤海油田古近系地震储层预测研究难点及对策

Difficulties and Technical Measures in Reservoir Prediction with Seismic Data from Paleogene Shahejie Formation of Bohai Oilfield

王建立 明君 张琳琳 闫涛

WANG Jianli MING Jun ZHANG Linlin YAN Tao

中海石油(中国)有限公司天津分公司, 天津塘沽 300452; 中国地质大学(北京)能源学院, 北京 100083

Tianjin Branch of CNOOC Ltd, Tanggu Tianjin 300452, China; School of Energy Resources of China University of Geosciences, Beijing 100083, China

古近系沙河街组是渤海油田一个重要的含油层系,目前储量占到整个渤海油田探明储量的11%左右,但是一直以来,沙河街组储层预测是中深层储层预测中的难点,主要原因为地震资料信噪比低、储层横向变化大、分辨率低。针对上述难点,结合渤海油田的地质、地震资料特点,有针对性地提出了沙河街组地震目标处理技术、相控模式约束下储层预测技术和地震目标采集技术等三个攻关技术序列及相应的攻关方向,通过在靶区油田开发研究中实际应用,初步形成沙河街组地震储层预测技术思路,研究成果有效地指导油田的开发井位部署和优化。

The Paleogene Shahejie formation is an important oil bearing layer in Bohai oil field, and the proved hydrocarbon reserves accounts for about 11% of Bohai Oilfield reserves. However, reservoir prediction on Shahejie formation is still difficult and the main reasons for those are low signal to noise ratio of seismic data, great lateral reservoir change, and low seismic resolution. In view of the geological and seismic data characteristics of Bohai oilfields, through study on the above difficulties, three:technologies have been proposed, including the seismic target processing technology, reservoir prediction technology under the sedimentary facies confinement and seismic target acquisition techniques, and the corresponding research direction have been made clear. Through practical application in the target development oilfields, the preliminary reservoir prediction technologies have been developed in Shahejie formation. The study results have been used to guide effectively the deployment and optimization of oil development wells.

https://doi.org/10.3969/j.issn.1008-2336.2014.04.044