天然气地质学

鄂尔多斯盆地天然气地质条件、资源潜力及勘探方向

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  • 1.中国石油长庆油田分公司勘探开发研究院,陕西 西安 710018;
    2.低渗透油气田勘探开发国家工程实验室,陕西 西安 710018
姚泾利(1964-),男,陕西泾阳人,教授,博士,主要从事油气勘探部署和综合地质研究.E-mail:yjl_cq@petrochina.com.cn.

收稿日期: 2018-07-27

  修回日期: 2018-09-11

  网络出版日期: 2018-11-13

基金资助

中国石油天然气集团公司重大科技专项课题“鄂尔多斯及外围盆地第四次油气资源评价”(编号:2013E-050207);中国石油重点项目“长庆油田探区“十三五油气资源及经济、环境评价”(编号:135YQZP-2017-KT11)联合资助.

The geological conditions,resource potential and exploration direction of natural gas in Ordos Basin

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  • 1.Exploration and Development Research Institute of PetroChina Changqing Oilfield Company,Xi’an 710018,China;
    2.National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields,Xi’an 710018,China

Received date: 2018-07-27

  Revised date: 2018-09-11

  Online published: 2018-11-13

摘要

近年来随着勘探不断深入,勘探目标向中深层和致密气藏拓展,需要对鄂尔多斯盆地的资源现状、类型和数量进行全新的认知。分析了盆地天然气成藏地质条件,建立了下古生界碳酸盐岩气和上古生界致密砂岩气成藏模式,明确了天然气富集规律。同时,为了满足精细勘探的需求,在 “层区带” 划分的基础上,优选和细化评价参数,采用小面元容积法、EUR类比法等6种方法,评价盆地天然气地质资源量为15.68×1012m3,剩余地质资源量为8.79×1012m3。其中,常规气剩余地质资源量为1.67×1012m3,非常规气剩余地质资源量为7.12×1012m3。预测了剩余资源层系及地区分布规律,分层次优选了有利勘探目标区带。

本文引用格式

姚泾利, 胡新友, 范立勇, 刘新社, 季海锟, . 鄂尔多斯盆地天然气地质条件、资源潜力及勘探方向[J]. 天然气地球科学, 2018 , 29(10) : 1465 -1474 . DOI: 10.11764/j.issn.1672-1926.2018.08.008

Abstract

In recentyears,exploration target expanded into middle-deep formation and tight-gas along with the development of explorationwork.So,it is needed toreunderstand the resource status,resource type and resource quantity in Ordos Basin.In this paper,we analyzed the geological conditions of gas reservoir formation,established the reservoir formationmodel of the carbonate gas in Lower Palaeozoic and the tight sandstone gas in Upper Paleozoic,and made clear the natural gas enrichment laws in Ordos Basin.Meanwhile,in order to meet the needs of precise prospecting,we optimized and refined the evaluation parameters,evaluated the quantity of natural gas resources in Ordos Basin using 6 methods which include the small surface element method and the EUR-analogy method etc.on the basis of “layer-zone” division.The quantity of natural gas geological resources is 15.68×1012m and the surplus is 8.79×1012m  in total.The amount of residual geological resources of conventional gas is 1.67×1012m3,and the mount of residual geological resources of unconventional gas is 7.12×1012m3.We forecast the distribution law in different layers and different regions,and optimize favorable exploration target zone hierarchically.

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