渤海湾盆地晋县凹陷高村—高邑地区沙河街组四段综合地质研究及目标优选

Comprehensive geological study and target optimization in the 4th Member of Shahejie Formation in the Gaocun-Gaoyi area,Jinxian Sag,Bohai Bay Basin

渤海湾盆地冀中坳陷晋县凹陷高村—高邑地区各层系石油勘探开发程度不均衡,其中沙河街组四段(E_(2)s^(4))剩余油气资源量较大,具有较好的生产潜力。通过对赵76断块油藏进行精细剖析,结合精细地层对比、层位标定、精细构造解释、砂体展布及沉积相研究等,明确了沙河街组四段(E_(2)s^(4))油气成藏的主要控制因素为岩性和构造。综合研究认为,岩性-构造油藏及岩性油藏为该区下一步主要的挖潜方向,优选了赵76断块下降盘构造-岩性叠合区和赵94井区砂体优势分布区作为下一步油藏评价目标区。

The degree of oil exploration and development of each layer in the Gaocun-Gaoyi area of Jinxian Sag in Jizhong Sag,Bohai Bay Basin is unbalanced.The remaining oil and gas resources in the 4th Member of Shahejie Formation are abundant,showing fairly good productive potentials in this area.Through the detailed dissection on Zhao 76 fault block reservoir,combined with the technical means of fine stratigraphic correlation,horizon calibration,fine structure interpretation,sand body distribution and sedimentary facies study,it is clear that the oil-gas accumulation in the 4th Member of Shahejie Formation are dominated by lithology and tectonic.Comprehensive research shows that lithological-structural reservoir and lithological reservoir are the main potential tapping orientations in the next step,and two favorable prospects are prioritized.