天然气地球科学

• 天然气地质学 • 上一篇    下一篇

塔里木盆地下古生界内幕白云岩勘探认识与勘探方向

杨海军   

  1. 中国石油塔里木油田分公司,新疆 库尔勒 841000
  • 收稿日期:2014-08-29 修回日期:2015-02-10 出版日期:2015-07-10 发布日期:2015-07-10
  • 作者简介:杨海军(1970-),男,河北卢龙人,高级工程师,博士,主要从事塔里木盆地油气勘探研究. E-mail:yanghjun-tlm@petrochina.com.cn.
  • 基金资助:

    中国石油天然气股份有限公司重大科技攻关专项“塔里木油田勘探开发关键技术研究及应用”(编号:22121G20112001)资助.

Exploration Knowledge and Direction of Lower Proterozoic Inner Dolostones,Tarim Basin

YANG Hai-jun   

  1. Tarim Oilfield Company,PetroChina,Korla 841000,China
  • Received:2014-08-29 Revised:2015-02-10 Online:2015-07-10 Published:2015-07-10

摘要:

塔里木盆地下古生界发育巨厚白云岩层,具有优质的生储盖组合配置,资源潜力巨大|下古生界白云岩层系内主要发育2套优质储盖组合,代表2个勘探领域,分别为盐上白云岩领域与盐下白云岩领域。通过对成功与失利井烃源岩、储层、盖层、古隆起、圈闭等因素排查分析,厘定制约盐上白云岩领域与盐下白云岩领域的关键石油地质要素,并通过对关键石油地质要素的新认识优选有利勘探区带。研究结果表明,制约盐下白云岩领域规模成藏的关键地质条件为古隆起背景、烃源岩背景|制约盐上白云岩领域油气规模成藏的关键地质条件为优质盖层、烃源岩发育背景与走滑断裂。建立在古隆起分布研究、生烃凹陷分布研究、区域性储盖组合分布研究基础上,结合现今目的层埋深情况,优选了巴东—塔中—古城隆起、塔北隆起2个盐下白云岩有利勘探区带与满西低凸起—古城低凸起盐上白云岩有利勘探区带。

关键词: 塔里木盆地, 下古生界白云岩, 勘探认识, 勘探方向

Abstract:

In the Tarim Basin,it widely distributes thick dolostone in the Lower Proterozoic,in which advantaged source-reservoir-cap rock combinations were well certified with great hydrocarbon exploration potential.Two sets of reservoir-cap rock combinations present two exploration realm,which are below-salts dolostone realm and above-salts dolostone realm,respectively.Based on the analysis of source rocks,reservoir,cap rocks,paleo-uplifts and traps for the successful and failed wells,the critical factors controlling hydrocarbon accumulation were pointed out.Paleo-uplift and distribution of source rocks are main factors affecting oil and gas accumulation in below-salts dolostones,whereas distribution of source rocks and cap rocks and faults control the hydrocarbon accumulation in above-salts dolostones.According to new knowledge on the distribution of source rocks,paleo-uplift and regional cap rocks,three advantaged exploration areas were selected:Two below-salts dolostones areas lying in Badong-Tazhong-Gucheng and Tabei area,and one above-salts dolostone area lying in Manxi-Gucheng area.

Key words: Tarim Basin, Lower Proterozoic dolostone, Exploration acknowledgement, Exploration direction

中图分类号: 

  • TE132.1

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