中国东北地区油气地质特征与勘探潜力展望

中国东北地区发育50多个盆地,规模大小不一,较大的盆地包括松辽、二连、海拉尔盆地和5个跨境盆地。东北地区油气资源潜力巨大,油气储量增幅显著,同时面临油气上产、稳产难度仍然持续加大的现实。本文在深入分析东北地区构造与沉积古地理演化过程的基础上,总结了东北地区构造与沉积协同作用下的成藏组合差异发育特征。进一步结合勘探实践,针对油气勘探中存在的问题,围绕着新领域新层系的工作思路,提出了东北地区油气勘探的方向,包括:松辽盆地中央坳陷带中浅层油气精细勘探,松辽盆地南部深层火山岩油气勘探,松辽盆地西斜坡和北部倾末端油气勘探,东北地区古生界油气勘探,大三江盆地群油气勘探,东北地区页岩油和油页岩资源勘探。为未来东北地区油气资源的勘探部署提供了科学依据。

Geological characteristics and exploration potential of oil and gas in the northeast area of China

There are more than 50 basins in northeastern China with different sizes. The relatively large basins include Songliao Basin, Erlian Basin, Hailar Basin and 5 cross-border basins. The potential of oil and gas resources in Northeast China is huge, the oil and gas reserves increase significantly, but there still exists the difficulty in continuous increasing of oil and gas production and stability of production. Based on the analysis of the evolution of the tectonic and sedimentary paleogeography in Northeast China, this paper summarizes the differential development characteristics of the reservoirs under the synergetic action of tectonics and sedimentation in Northeast China. Combined with the practice of exploration, aimed at solving the existing problems in oil and gas exploration and focusing on the thought of new area and new strata, the authors put forward the directions of oil and gas exploration in northeastern China, which include the fine exploration of middle and shallow oil and gas in the central depression of Songliao Basin, the exploration of deep volcanic hydrocarbon exploration in the south of Songliao Basin, western slope and north end of Songliao Basin oil and gas, the exploration of Paleozoic oil and gas in Northeast China, the exploration of oil and gas in the Dasanjiang Basin, and the exploration of shale oil and oil shale resources in northeastern China. These suggests provide a scientific basis for the future exploration and deployment of oil and gas resources in Northeast China.