石油与天然气地质 ›› 2004, Vol. 25 ›› Issue (4): 428-432.doi: 10.11743/ogg20040411

• 油气地质 • 上一篇    下一篇

浅谈塔里木盆地台盆区天然气勘探前景

云露1, 肖志高2, 徐明军2   

  1. 1. 中国石化西北分公司勘探开发规划设计研究院,新疆乌鲁木齐 830011;
    2. 中国石油塔里木油田分公司开发事业部,新疆库尔勒 840001
  • 收稿日期:2004-05-12 出版日期:2004-08-25 发布日期:2012-01-16
  • 基金项目:

    国家"九五"重点科技攻关项目(99-111-02-01)

A brief talk on gas exploration potential in the platform-basin region,Tarim basin

Yun Lu1, Xiao Zhigao2, Xu Mingjun2   

  1. 1. Exploration & Production Planning and Designing Institute, North-west Branch Company, SINOPEC, Urumqi, Xinjiang;
    2. Department of Development, Tarim Oilfield Branch Company, PetroChina, Korle, Xinjiang
  • Received:2004-05-12 Online:2004-08-25 Published:2012-01-16

PDF (PC)

704

被引次数

15

摘要：

塔里木盆地是一个由古生代克拉通盆地与中、新生代前陆盆地叠合而成的大型叠合盆地。克拉通盆地天然气成藏的主要控制因素为:巨厚的烃源岩、长期的低地温背景是长期生烃、多期成藏的重要条件;古隆起、古斜坡控制了古生界海相油气的运移、聚集与成藏;古岩溶储集体为古生界碳酸盐岩大型油气田的形成提供储集空间;古生界非构造圈闭是大型油气田的主要圈闭类型;油气成藏封闭系统的演化控制了盆地古生界油气资源及勘探方向。塔河油田9区凝析气藏和和田河气田是克拉通盆地天然气成藏的两个实例。主力烃源岩的生烃期特征决定着克拉通周缘的隆起带具有较好的天然气聚集成藏条件,下古生界烃源岩相邻的层位和地区是天然气勘探的重要目标。应加强对巴楚-麦盖提地区、满加尔坳陷周边地区高成熟-过成熟海相天然气的勘探研究工作。

关键词: 克拉通盆地, 烃源岩, 生烃期, 天然气, 塔里木盆地

Abstract:

Tarim basin is a huge superposed basin composed of Paleozoic cratonic basin and Meso-Cenozoic foreland basin. The main factors that control the gas accumulation in the cratonic basin are (1) thick source rocks and prolonged low-geotemperature field, which are an important conditions for prolonged hydrocarbon generation and multiphase gas accumultion; (2) palaeohigh and palaeoslope, which control the hydrocarbon migration and accumulation in Paleozoic marine strata; (3) palaeokarst reservoir, which provides reservoir space for the large oil and gas fields in paleozoic carbonate rocks; (4) Paleozoic non-structural trap, which is the main trap type of large oil and gas fields; (5) evolution of closed system of oil and gas accumulation, which controls the distribution of oil and gas resource and its exploration strategy. The condensate reservoir in the ninth block of Tahe oilfield and Hetian river gas field are selected as two examples that illustrate the gas accumulation in cratonic basin. The characteristics of hydrocarbon-generating period of main source rocks indicate that there is a better conditions of gas accumulation in the uplifted belts around the Paleozoic cratonic basin. The potential reservoir rocks near the early Paleozoic source rock are the important targets of gas exploration. Therefore, in Bachu-Maigaiti region and peripheral areas of Manjiaer depression, the exploration activity of mature and overmature gas exploration in marine strata should be increased.

Key words: cratonic basin, hydrocarbon-generating period, natural gas, Tarim

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