松辽盆地深层天然气勘探实践与勘探领域

Exploration practices and directions for deep natural gas in the Songliao Basin

松辽盆地的油气勘探经历了构造油气勘探、非构造油气勘探和深层油气勘探3个阶段。在深层天然气的勘探实践中,随着徐深1井、长深1井和腰深1井等的相继突破,松辽盆地深层天然气工业基地初具端倪。对松辽盆地深层天然气的勘探得到了3点启迪:1)深化地质认识、创新勘探思路是取得深层勘探突破的基础;2)应用先进、适用的工程技术是深层勘探突破的关键;3)坚持勘探、强化管理、联合作战是实现深层勘探突破的保障。松辽盆地深层勘探程度还很低,可供勘探的领域广阔,具有火山岩勘探、碎屑岩勘探和石炭-二叠系海相勘探3个勘探领域。大力加强深层勘探有望获得更多发现,勘探潜力很大。

Oil and gas exploration in Songliao basin has gone through three stages, i. e. , structural,non-structural, and current deep reservoir exploration. During the practices if deep gas reservoir exploration, discoveries have been achieved in well Xushen-1, Changshen-1 and Yaosben-1, and a gas industry base begun to take shape in the basin. Exploration activities in the basin prove that for obtaining breakthrough in deep gas exploration, deeper geologic understanding and creative exploration idea are the basis, application of the advanced engineering technique is the key, and consistency and cooperation in exploration and enforcement in management are the guarantee. Generally speaking, Songliao basin remains largely unexplored and there are plenty of opportunities for further exploration activities. Three direction of explorations are volcanic rocks, clastic rocks, and the Carboniferous- Permian marine facies. It is safe to say that more discoveries of larger scale will be achieved through strengthening exploration in these three directions.