老河口油田油藏特征及适用的勘探技术

Oil-reservoir Forming Features and Exploration Technology in Laohekou Oil Field

庄丽

ZHUANG Li

中国石化 石油勘探开发研究院, 北京 100083

Exploration & Production Research Institute, SINOPEC, Beijing 100083, China

老河口油田位于埕东凸起北斜坡, 馆上段是主要含油层系, 北部是埕北生油凹陷, 油源供给充足;多期发育河道砂体相互叠置形成了老河口油田埋藏浅、数量多、叠加面积大、油藏类型单一的馆上段河道砂岩性油藏;针对馆上段河道砂体的地震属性特征, 选择了水平切片、频谱分解等适用的勘探技术, 在勘探部署和储量计算过程中取得了较好的效果, 能够真实地反映油层的分布状况, 更好地预测石油地质储量。

Laohekou oil field is located at the north slope of Chengdong arch, and the upper Guantao Formation is the main oil-bearing series. The Chengbei oil-generative sag is north of Laohekou oil field, which has ample oil source supplies. Multi-stage developed meandering stream sandstone bodies have formed a lot of lithologic reservoirs in the upper Guantao Formation which are buried shallowly and has large superposition area and simple oil-reservoir type. Using horizontal slice and spectral separability on exploration deployment and reserves computation, achieves satisfactory result. It reflects distribution of oil layer truly and dopes out geological reserves better.