摘要
川东下二叠阳新统顶风化壳侵蚀面在块断拉张力作用下,发育了众多的断层,经过长期风化剥蚀和地下水淋滤,溶蚀形成了古岩溶储层。由于地壳稳定抬升,潜水面下降,在垂向岩溶带形成了两个岩溶旋回期。第Ⅰ期距顶30～50m;第Ⅱ期距顶80～120m。该区大巴山南缘达县—开县一带,位于古地貌高部位,断裂发育组系多,又是地下水汇集区,极有利于古岩溶储层发育,特别是开江古隆起周围保存条件好的圈闭,是寻找下二叠阳新统古岩溶储层气藏的突破口。
Based upon a discussion of the characteristics of the Permian Yangxin Karst, this paper deals with the main factors dominating its formation and distribution. Finally, areas most favorable for natural gas exploration are pointed out.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1993年第1期110-114,共5页
Petroleum Exploration and Development
