楚雄盆地油气系统分析及勘探前景  

Petroleum System and Exploration Prospect in Chuxiong Basin

作　　者：赵宗举[1] 邓红婴[1] 徐云俊[1] 

机构地区：[1]中国石油勘探开发研究院杭州地质研究所

出　　处：《海相油气地质》2003年第1期80-86,共7页Marine Origin Petroleum Geology

摘　　要：从本区基本油气地质条件入手,通过拟三维盆地模拟、分期计算生烃强度等手段,采用油气系统"动态演化"综合分析思路与方法,将楚雄盆地分出了"北部凹陷 T_3(J_(2-3))—T_3-J_2-K(潜在的)油气系统"及"东部的东山—云龙凹陷∈_1-D_2(O_1)—D_(1-2)(推测破坏的)油气系统"。结合对已钻井结果的分析,认为楚雄盆地应以天然气勘探为主,北部凹陷白垩系—下第三系分布区,特别是下第三系膏盐岩盖层分布的地区,应该是楚雄盆地天然气勘探的主要地区,勘探的主要风险是盖层及燕山晚期—喜马拉雅期断裂改造问题。Based on conditions of petroleum geology,quasi-3-D basin modeling,intensity of Hydrocarbon generation and comprehen- sive analysis of"dynamic evolution",two petroleum systems are divided in Chuxiong Basin,one is the T_3 (J_(2-3))—T_3-J_2-K (potential)Petroleum System in Northern Sag,and another is the ∈_1-D_2 (O_1)—D_(1-2) (presumedly destroyed) Petroleum Sys- tem in Dongshan--Yunlong Sag in the east part of the basin. Associated with the analysis of the drilled wells,it is sugges- ted that in this basin,exploration should be laid predominantly on natural gas since the area of Cretaceous—Paleogene rocks in Northern Sag,especially the area covered by Paleogene gypsum rock cap in it,should be the goal of gas exploration. The exploration risk will be probably focused to the cap rock and the late Yanshanian—Hymalayan fractures that have been reconstructed.

关 键 词：楚雄盆地 油气分析 油气勘探 生储盖组合 盆地模拟 

分 类 号：P618.13[天文地球—矿床学]