运用断裂控烃理论实现柴达木盆地油气勘探大突破

Application of fault control hydrocarbon theory to realize a great breakthrough of petroleum exploration in Qaidam Basin

断裂控烃理论指出 :“断裂是陆相盆地控制油气生、运、聚、散和分布的根本原因 ;断裂与油气藏的关系是枝与果、藤与瓜的关系 ;科学的勘探思路是以断裂为基本线索 ,沿枝 (断裂 )摘果 (油气藏 ) ,顺藤 (断裂 )摸瓜 (油气藏 )。对柴达木盆地的断裂控烃特征研究表明 ,断裂对油气的生、运、聚、散和分布有明显的控制作用 ;盆地腹地控烃断裂发育 ,资源潜力巨大 ,具备形成大型、特大型油气藏的地质条件 ,是最有利取得油气勘探大突破的重要地区 ,其中牛东—一里坪凹陷的鄂博梁Ⅲ号—伊克雅乌汝—鸭湖—台吉乃尔构造带、中南隆起区的碱石山—落雁山—船形丘。

The fault control hydrocarbon theory indicates that the fault is a basic factor for controlling hydrocarbon generation,migration,accumulation,scattering and distribution,and the relationship between faults and hydrocarbon accumulation implies the relationship between branch and fruit or cane and melon.A scientific exploration thought should be to fetch fruits (hydrocarbon accumulations) along branches (faults) or to look for melons (hydrocarbon accumulations) along the canes (faults).The features of fault controlling hydrocarbon in Qaidam Basin are very obvious.The controlling laws of fault for hydrocarbon generation,migration,accumulation,scattering and distribution are also obvious.The faults for controlling hydrocarbon are very active and there is a great potential of oil and gas resources in the middle region of Qaidam Basin.The middle region of the basin has the geological conditions for forming the huge hydrocarbon accumulations,and may be the most important and possible exploration belt.The tectonic belt of E?Bo?Liang (Ⅲ)?Yikeyawuru_Yahu_Tajinaier in Niudong_Yiliping depression and the tectonic traps of Jian_Shishan_Luoyanshan_Chuansiqiu and Hongsan_han in middle southern rift of Qaidam Basin are the first chosen exploration target for a significant breakthrough of oil and gas exploration.