天然气地球科学 ›› 2022, Vol. 33 ›› Issue (4): 548–555.doi: 10.11764/j.issn.1672-1926.2021.10.008

• 天然气地质学 • 上一篇    下一篇

塔里木盆地震旦系勘探领域分析及区带优选

闫磊1(),魏国齐1,朱光有1,陈永权2,罗彩明2,杨敏1,王珊1,杜德道1   

  1. 1.中国石油勘探开发研究院,北京 100083
    2.中国石油塔里木油田分公司,新疆 库尔勒 841000
  • 收稿日期:2021-06-05 修回日期:2021-10-10 出版日期:2022-04-10 发布日期:2022-04-22
  • 作者简介:闫磊(1985-),男,山西定襄人,高级工程师,博士,主要从事石油天然气地质综合研究.E-mail:yanlei2011@petrochina.com.cn.
  • 基金资助:
    中国石油天然气股份有限公司科学研究与技术开发项目“海相碳酸盐岩成藏理论与勘探技术研究”(2021DJ05)

Exploration field analysis and zone optimization of Sinian, Tarim Basin

Lei YAN1(),Guoqi WEI1,Guangyou ZHU1,Yongquan CHEN2,Caiming LUO2,Min YANG1,Shan WANG1,Dedao DU1   

  1. 1.Research Institute of Exploration and Development of PetroChina,Beijing 100083,China
    2.Tarim Oilfield Company,PetroChina,Korla 841000,China
  • Received:2021-06-05 Revised:2021-10-10 Online:2022-04-10 Published:2022-04-22
  • Supported by:
    The Scientific Research and Technology Development Project of China National Petroleum Corporation(2021DJ05)

摘要:

晚元古代—早古生代碳酸盐岩是油气勘探的重要领域,塔里木盆地震旦系碳酸盐岩层系古老、埋藏深,钻井少,许多地质问题尚不清楚,制约了深层碳酸盐岩层系的勘探。基于塔里木盆地震旦系地质结构分析,通过地层对比及地震预测等手段,对震旦系有利烃源岩的分布、深层高能储集相带及成藏组合进行研究,梳理了盆地震旦系的勘探领域及有利区带。研究认为:塔里木盆地震旦系发育斜坡—盆地相烃源岩,齐格布拉克组上部发育优质白云岩储层,与寒武系底部玉尔吐斯组泥岩可形成有利成藏组合;塔北隆起南斜坡及塔中隆起北斜坡,是塔里木盆地震旦系白云岩最有利的勘探区带,万米埋深内有利勘探面积约为3.1×104 km2。研究成果对塔里木盆地震旦系碳酸盐岩油气勘探具有借鉴意义。

关键词: 塔里木盆地, 震旦系, 烃源岩, 成藏组合, 勘探领域, 区带优选

Abstract:

Carbonate rock of Late Proterozoic- Early Paleozoic is an important field of oil and gas exploration. The Sinian carbonate rock series in Tarim Basin are old, deep buried, few drilling wells, and many geological problems are unclear, which restrict the exploration of deep carbonate rock. Based on the analysis of Sinian geological structure, by means of stratigraphic correlation and seismic prediction, the distribution of Sinian favorable source rocks, deep reservoir facies belts and reservoir forming assemblages are studied to comb the exploration fields and favorable zones of Sinian in Tarim Basin. The results show that: slope-basin facies source rocks developed in Sinian. High-quality dolomite reservoirs developed in the upper part of Qigebulake Formation, and mudstone of Yuertus Formation at the bottom of Cambrian can form favorable reservoir cap assemblage. The south slope of Tabei Uplift and the north slope of Tazhong Uplift are the most favorable exploration zones for Sinian dolomite, with favorable exploration area of approximately 31 000 km2. The research results provide a certain reference for the Sinian carbonate oil and gas exploration in the Tarim Basin.

Key words: Tarim Basin, Sinian, Hydrocarbon source rocks, Accumulation assemblage, Exploration domain, Zone selection

中图分类号: 

  • TE122.1

图1

塔里木盆地构造单元图(a)及寒武系—震旦系综合柱状图(b)"

图2

研究区震旦系地质结构剖面(据文献[17]修改)"

图3

塔里木盆地震旦系连井对比及地层残余厚度图"

图4

研究区震旦系—寒武系烃源岩分布"

图5

研究区震旦系沉积相及岩心照片(a)塔里木盆地奇格布拉克组沉积相;(b)轮探1井奇格布拉克组岩屑照片,8 721 m,泡沫绵层白云岩;(c)轮探1井奇格布拉克组岩屑照片,8 742 m,葡萄花边构造;(d)东探1井震旦系岩心照片,5 753 m,粉细晶白云岩"

图6

研究区震旦系勘探区带优选"

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