天然气地质学

塔里木盆地哈拉哈塘地区潜山岩溶带油气成藏关键因素

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  • (1.中国石油勘探开发研究院西北分院,甘肃 兰州 730020;
    2.中国石油塔里木油田公司,新疆 库尔勒 841000)
王宏斌(1966-),男,甘肃高台人,高级工程师,博士,主要从事碳酸盐岩油藏描述研究. E-mail:wang_hb@petrochina.com.cn.

收稿日期: 2015-05-27

  修回日期: 2015-09-01

  网络出版日期: 2015-09-20

基金资助

国家科技重大专项(编号:2011ZX05004-004)资助.

Key Factors for Reservoir-forming in Buried-hill Karst Zone of Halahatang Area,Tarim Basin

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  • (1.Research Institute of Exploration and Development-Northwest,PetroChina,Lanzhou 730020,China;
    2.Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla 841000,China)

Received date: 2015-05-27

  Revised date: 2015-09-01

  Online published: 2015-09-20

摘要

塔里木盆地哈拉哈塘地区已建成碳酸盐岩百万吨级油田。然而北部潜山岩溶带油气成藏关键因素不明,油气勘探开发一体化程度滞缓。通过将研究区邻区顺层岩溶带建产区块的油气高效成藏关键因素进行差异性对比分析,提出潜山岩溶带奥陶系一间房组—鹰山组岩溶风化壳缝洞型储层上覆志留系柯坪塔格组上二亚段致密砂泥岩互层段直接盖层是该区油气大面积富集成藏的关键因素;利用高保真地震资料,查明了潜山岩溶带南部边界—奥陶系吐木休克组尖灭线、盖层分布特征并落实岩溶缝洞圈闭,有效地指导了钻探部署。

本文引用格式

王宏斌,张虎权,杨丽莎,郑多明,姚清洲,代冬冬 . 塔里木盆地哈拉哈塘地区潜山岩溶带油气成藏关键因素[J]. 天然气地球科学, 2015 , 26(S1) : 72 -79 . DOI: 10.11764/j.issn.1672-1926.2015.S1.0072

Abstract

Halahatang area of Tarim Basin has been established as a carbonate rock oilfield of millions of tons.However,the controlling factors for reservoir-formation in the buried-hill karst zone are not clear,which restricted the integrated degree of oil/gas exploration and development.According to the differential comparison of key factors on high efficient reservoir-formation of oil/gas between buried-hill zone and adjacent karst zone,it has been confirmed that the tight sandstone interbedded with mudstone in the 2nd member of Silurian Kepingtage Famation overlaid on the weathering curst reservoir of Ordovician Yijiangfang Formation-Yingshan Formation is the key factor for oil/gas accumulation and enrichment in the buried-hill karst zone in large scale.Based on Hi Fi processing seismic data,the wedge out boundary of Ordovician Tumuxiuke Formation in the south part of buried-hill karst zone has been confirmed,and the distribution characteristics of seal have been figured out to fix the distribution of karst fracture-pore traps,which guides the well drilling and deployment effectively.

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