泌阳凹陷深凹区页岩油勘探实践

河南油田泌阳凹陷经过近40年的勘探,常规资源勘探程度与资源探明率较高,寻找规模性储量难度越来越大。近年来,国外非常规勘探开发理念的引进,微-纳米级孔隙、非达西渗流地质理论的创新,水平井钻完井与多级分段压裂技术的突破,使富有机质页岩成为新的勘探目标。泌阳凹陷深凹区具备形成页岩油气的地质条件,通过页岩油气赋存条件基础研究,部署钻探泌页HF1井获得较高产工业油流,使泌阳凹陷成为国内首个获得陆相页岩油发现与突破的地区,为老油田持续发展开拓了新的勘探领域。

Exploration practice of shale oil in deep sag area of Biyang depression

After 40 years exploration in Biyang depression,the conventional resources of which has been highly prospected,so it becomes more and more difficult to look for big-scaled conventional reserves.With unconventional E&P concept abroad being introduced,the realization of non-darcy seepage flow geological theory innovation on micropores and nanoscale pores,and good breakthrough on drilling completion and multi-stage segmental fracturing technology of horizontal wells,the shale rocks full of rick organic matter become the new exploration target in Biyang depression.The deep sag area of Biyang depression is found to be of the geological conditions for shale oil.Through basic research of shale oil and gas occurrence conditions,the newly drilled BY-HF-1 well achieved commercial flow of high production,making Biyang depression the first area of obtaining shale oil discovery and developing new exploration area for the sustainable development of old oilfield.