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连续多年在油气勘探开发中取得重大突破的长庆油田,以提交1×108 t致密油探明地质储量为标志,在陕北姬塬发现了中国第1个亿吨级大型致密油田——新安边油田,为长庆油田年5 000×104 t稳产进一步夯实了资源基础。致密油是指夹在或紧邻优质生油层系的致密储集层中,未经大规模长距离运移而形成的石油聚集。鄂尔多斯盆地致密油资源丰富,具有很大的勘探开发潜力,但与以往开发的特低渗、超低渗油藏相比,其“成藏”机理更复杂、孔喉更细微、填隙物含量更高、勘探难度更大。
Changqing Oilfield, which has made significant breakthroughs in oil and gas exploration and development for many years, is marked by the proven geological reserves of 1 × 108 t tight oil. In the Jiyuan, a large-scale large-scale tight oilfield in China, Bian Oilfield, for the Changqing Oilfield 5 000 × 104 t steady production to further consolidate the resource base. Tight oil refers to the accumulation of oil formed in dense reservoirs sandwiched between or adjacent to the fine-grained oil-bearing formations without large-scale migration over long distances. The tight oil in the Ordos Basin is rich in oil and has great potential for exploration and development. However, compared with the ultra-low permeability and ultra-low permeability reservoirs developed in the past, the “reservoir-forming” mechanism is more complicated, the pore throats are more subtle, Higher content, exploration more difficult.