黄骅坳陷深层油气成藏潜力与勘探方向

Deep Oil-gas Reservior-forming Potential and Exploration Direction in Huanghua Depression

黄骅坳陷位于渤海湾盆地中北部,构造上隶属于华北盆地。通过对黄骅坳陷构造演化、盆地叠合改造过程和研究区内深层烃源岩演化过程的研究,以及对盆地叠合改造影响黄骅坳陷深层油气成藏和新生古储、古生古储、古生中(生界)储、新生中(生界)储等多种成藏类型的分析,认为该区深层油气成藏潜力较大,提出新生古储潜山、中央隆起带新生中(生界)储潜山、古生古储原生油气藏等勘探方向。

Huanghua Depression, which is located in north-central Bohai Bay basin, belongs to North China basin in structure. It has experienced five tectonic movement stages of Caledonian, Hercynian, Indo-Chinanian, Yanshanian and Himalayanian, and developed four periods of basin-forming function, which are mutually superimposed and reformed in the longitudinal direction. The hydrocarbon rocks in the deep region have experienced evolution process of shallow deposit in early and middle periods and deep deposit in late period, and have a great potential of secondary hydrocarbon generation. Pool-forming types posses a variety of combination characteristics, containing paleo-storage of neo-generation, paleo-storage of paleo generation, meso-storage of paleo-generation, meso-storage of neo-generation and so on. This study shows that the region has great potential of deep resources, and exploitation directions are proposed as paleo-stor- age of neo-generation in buried hills, meso-storage of neo-generation in buried hills of central uplift belt, primary reservoir of paleo-storage of paleo-generation.