鄂尔多斯盆地低渗透石油勘探与研究方向

Low-Permeability Oil Exploration and Research-Directions in-Ordos-Bas-in

近年来，长庆油田石油勘探在地质认识及勘探成果上均取得了多项重大突破和新进展。恢复了晚三叠世原型盆地，创新了湖盆中部成藏理论，总结了姬塬地区多层系复合成藏理论，分析了致密油藏赋存特征，理论创新认识有效指导了勘探实践，落实了陕北、姬塬、华庆、西峰及周边4个10×10^8t 级的整装含油富集区，助推了石油储量跨越式增长。随着勘探对象日趋复杂。对面临的一些制约勘探突破和持续发展的地质难点进行了分析，明确了下一步科研攻关方向。在系统总结石油富集规律的基础上，对近期储量现实目标、中远期资源前景目标进行了分析评价，预测了储量增长潜力，可满足长庆油田5000×10^t快速上产及持续稳产对石油资源的需求。

In recent years, a number of significant breakthroughs and new progress in the understanding of the geology and explo- ration results were obtained in petroleum exploration in Changqing Oilfield. The Late Triassic prototype basin was restored. The theory of reservoir-forming in the central lake basin was innovated. The multilayer composite accumulation theory in the Jiyuan area was summarized. The light oil reservoir occurrence characteristics have been analyzed. Understanding of the theoretical innovation effec- tively guides the exploration practices. There were four 1-billion-ton-class （thousand million ton） unitary oil-rich regions implement- ed or ascertained in northern Sbaanxi, Jiyuan, Hua-Qing, Xifeng and the surrounding areas. It promotes the leapfrog increase of oil reserves. With the increasing complexity of exploration targets, geological difficulties that constraint the exploration breakthrough and sustainable development were analyzed. The next step of the scientific research direction has been made clear. Based on the system- atic summarization of the oil enrichment laws, we analyze and evaluate the realistic goal of reserves in the near future, the mid- and long-term prospect and goal of resources, forecast the potential of reserves increase which can meet the demand in oil resources of Changqing Oilfieht Co.＇s fast increasing of production up to 5000 ×10^4 t and keeping stable oil production.