摘要
丰富的地面油气显示及奥陶系、志留系普遍含沥青的事实,表明本区曾有过大规模的油气运聚过程。柯坪断隆实际上是上新世库车期形成的逆掩推覆带,其下尚隐伏着与巴楚断隆连为一体的古隆起。地面油气显示并不能证明地下已无油气藏存在。推测上覆推覆带中有聚集油气的可能性,而下伏古隆起形成大油气田的可能性更大。
Abundant oilseepage and asphalt existing in the Silurian and the Ordovician reveal large-scale petroleum migration and accumulation happened in Keping area. Actually, Keping fault-uplift, under which there exists a paleouplift as a part of Bachu fault-uplift, is an overthrust belt formed during Neocene Kuche period. Oil/gas shows on the ground can′t prove there are no oil/gas pools underground. It is predicted that there is probability of hydrocarbon accumulation in the overthrust belt, and the probability to form giant oil/gas fields is much larger in the covered paleouptift.
出处
《沉积学报》
CAS
CSCD
北大核心
1996年第3期30-37,共8页
Acta Sedimentologica Sinica
关键词
油气藏
塔里木盆地
柯坪地区
油苗
油气前景
oilseepage\ overthrust structural layer\ interrelated fold\ covered structural layer\ keping area