石油与天然气地质 ›› 2007, Vol. 28 ›› Issue (6): 693-702.doi: 10.11743/ogg20070601

• 论文 •    下一篇

塔里木盆地大中型油气田成控因素与展布规律

蔡希源   

  1. 中国石油化工股份有限公司,北京 100029
  • 收稿日期:2007-10-11 出版日期:2007-12-25 发布日期:2012-01-16

Main factors controlling hydrocarbon accumulation of middle-and large-sized oil and gas fields and their distribution rules in the Tarim Basin

Cai Xiyuan   

  1. China Petroleum & Chemical Corporation, Beijing 100029, China
  • Received:2007-10-11 Online:2007-12-25 Published:2012-01-16

摘要:

塔里木盆地油气分布十分复杂,油气藏形成及分布受多种因素控制。烃源岩分布及其热演化决定了油气田的平面分布,优质区域盖层和储盖组合控制油气富集的纵向分布,长期继承发育的大型稳定古隆起、古斜坡以及前陆逆冲构造带是大中型油气田形成的最有利地区,构造-岩性圈闭及低幅度构造圈闭控制上古生界—中生界油气成藏,多源多期动态成藏-早期成藏改造、晚期充注调整是塔里木盆地油气成藏的重要机理。碳酸盐岩领域重点突出大型表生岩溶型和礁滩相溶蚀孔隙型等复合圈闭的勘探,碎屑岩领域应突出志留系大型地层超覆型、构造-岩性圈闭。塔北地区的阿克库勒凸起及雅克拉断凸是近期增储上产的地区,应加强该区的多层系复合油气藏立体勘探。塔中古隆起、和田河古隆起、巴楚隆起、古城墟古隆起、玛南断褶带是进一步寻找大油气田的有利目标区。超深层及寒武系盐下白云岩领域值得进一步探索。

关键词: 分布规律, 控制因素, 大中型油气田, 塔里木盆地

Abstract:

The formation and distribution of oil and gas pools in the Tarim Basin is complicated and controlled by many factors.The distribution of source rocks and their thermal evolution determines the plane distribution of oil and gas fields,while excellent regional seals and reservoir-cap rock combination control the vertical distribution of oil and gas.Large and stable inherited paleohighs and paleoslopes with long-term development history,and foreland thrust belts are considered to be the most favorable regions for the formation of middle and large oil and gas fields.The structural lithologic traps and low-amplitude structural traps control the Paleozoic-Mesozoic hydrocarbon accumulation.Multi-source and multi-stage dynamic accumulation-early reservoir modification and late charge adjustment dominate the hydrocarbon reservoiring in the Tarim Basin.The exploration of carbonate reservoirs shall be focused on compound traps such as the large hypergene karst and reef-bank facies with dissolution pores,as for clastic rock formations,the exploration shall aim at large Silurian stratigraphic overlap traps and structural lithologic traps.The Tabei uplift is the hope for improving reserves and production and all-round exploration of composite hydrocarbon reservoirs should be strengthened.Tazhong paleohigh,Hetianhe palaeouplift,Bachu uplift,Guchengqu paleohigh,and Manan faulted fold belt,shall be the potential areas for further discovery of oil and gas fields,and the superdeep layers and the Cambrian pre-sah dolomites are worthy of further prospecting and investigation.

Key words: distribution rule, controlling factor, middle-and large-sized oil and gas field, Tarim Basin

中图分类号: