| 摘要: |
| 根据源-盖控藏理论，结合油源对比结果，对吐哈盆地西部弧形带油气分布规律和油气藏形成的主控因素进行 研究。结果表明:西部弧形带油气主要有煤系油、湖相油和二者的混合油3种类型，主力油层原油以煤系油为主，混 有少量湖相油,其他含油层位为煤系油r油气远距离运聚成藏主要受4个因素控制，侏罗系水西沟群煤系烃源岩和七 克台组湖相烃源岩油气供给充足是油气藏形成的基础;烃源岩大量排烃期由东向西持续隆升的构造脊严格约束油 气运移指向和油气藏分布；由不整合面和砂体组成的侧向输导网络是油气远距离运移的关键；白垩系和第三系良好 的区域性盖层有效地阻止了油气在长距离运移路径中的散失。 |
| 关键词: 吐哈盆地 西部弧形带 油气运聚成藏 主控因素 |
| DOI：10.3969/j.issn.1673-5005.2010.02.005 |
| 分类号:TE 122.31 |
| 基金项目:国家“973”项目(2006CB202303) |
|
| Dominant control factors of hydrocarbon distance accumulating in western arc-like zone of Turpan-hami Basin |
|
LIU Jiang-tao1,HUANG Zhi-long1,WANG Hai2
|
|
(1. School of Resource and Information Technology in China University of Petroleum, Beijing 102249, Chirm ;2. Tarim Oilfield Branch Company,PetroChina, Korle S410001China)
|
| Abstract: |
| Based on theory of source and seal controlling hydrocarbon accumulation, associating the newest results of oil and source rock correlation，the distribution of hydrocarbon and dominant control factors of oil and gas field were researched in western arc-like zone of Turpan-hami Basin. The results indicate that there are three kinds of hydrocarbon including hydrocarbon derived from coal, claystone and the mixture. The hydrocarbon of the main layer is derived from coal mixing handful hydrocarbon derived from claystone. The hydrocarbon of rest layers is the hydrocarbon derived from coal. The dominant control factors of hydrocarbon distance accumulating are as follows : The mother rock of Shuixigou group coal and Qiketai clay-stone of Jurassic was oil and gas source. The structure back was elevated piecemeal from east to west in main escaping period of hydrocarbon and controlled the hydrocarbon migration heading and distribution. The sideway transforming system including sand and unconformity was the key factor of hydrocarbon distance migration and accumulation. The superior cap rock of Cretaceous and Tertiary system averted effectively loss of hydrocarbon during migration. |
| Key words: Turpan-hami Basin western arc-like zone migration and accumulation of hydrocarbon dominant control factors |
