临兴致密砂岩气藏地质特征及开发潜力分析

米洪刚; 张兵; 朱光辉; 苏羽; 张海锋

doi:10.3969/j.issn.1006-6535.2022.06.008

特种油气藏 >

2022 , Vol. 29 >Issue 6: 65 - 72

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.06.008

地质勘探

临兴致密砂岩气藏地质特征及开发潜力分析

米洪刚 ,
张兵 ,
朱光辉 ,
苏羽 ,
张海锋

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中联煤层气有限责任公司,北京 100016

米洪刚(1975—),男,高级工程师,1997年毕业于成都理工学院石油工程专业,2010年毕业于中国石油大学(华东)石油天然气工程专业,获硕士学位,现主要从事致密气和煤层气的科研与生产管理工作。

收稿日期: 2021-12-27

修回日期: 2022-07-29

网络出版日期: 2023-01-10

基金资助

“十四五”重大科技专项“陆上非常规天然气勘探开发关键技术”(KKGG-2021-1000)

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Geological Characteristics and Development Potential Analysis of Linxing Tight Sandstone Gas Reservoir

Mi Honggang ,
Zhang Bing ,
Zhu Guanghui ,
Su Yu ,
Zhang Haifeng

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China United Coalbed Methane Co., Ltd., Beijing 100016

Received date: 2021-12-27

Revised date: 2022-07-29

Online published: 2023-01-10

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摘要

针对鄂尔多斯盆地临兴地区致密砂岩气藏非均质性强、储量动用不充分的技术难题,以临兴地区石盒子组盒四段为研究对象,利用钻井、测井与地震资料相结合的方法,进行立体空间层序地层格架精细刻画,并在此基础上开展石盒子组小层级别沉积微相精细描述和致密砂岩“甜点”优质储层定性与定量预测。研究结果表明:临兴地区致密砂岩优质储层主要为孔隙度大于6%、密度小于2.55 g/cm³、v_P/v_S小于1.8的厚层致密砂岩河道砂体,其地震反射特征为中低频连续中强反射;根据优质储层“甜点”预测结果,部署空间立体井位,临兴地区致密气藏储量动用程度提高15.3个百分点,优化井位部署50口,预计增加天然气可采储量100×10⁸m³。研究成果可为临兴地区致密气藏未动用储量立体勘探开发部署提供有利的技术支撑,对同类型致密砂岩气藏的勘探及储量有效动用具有重要的参考和借鉴意义。

关键词： 致密气藏; 立体勘探; 储量动用; 挖潜方向; 临兴地区

本文引用格式

米洪刚 , 张兵 , 朱光辉 , 苏羽 , 张海锋 . 临兴致密砂岩气藏地质特征及开发潜力分析[J]. 特种油气藏, 2022 , 29(6) : 65 -72 . DOI: 10.3969/j.issn.1006-6535.2022.06.008

Abstract

To address the technical problems of strong heterogeneity and insufficient reserves production in the Linxing Area of the Ordos Basin, the fourth member of the Shihezi Formation in the Linxing Area is taken as the research object, a method combining drilling, logging and seismic data is adopted to carry out fine characterization of three-dimensional spatial sequence stratigraphic framework, and on this basis, the fine description of sublayer sedimentary microfacies of Shihezi Formation and the qualitative and quantitative prediction of tight sandstone “sweet spot” high-quality reservoirs are carried out. The research result shows: The high-quality tight sandstone reservoirs in the Linxing Area are mainly thick tight sandstone river channel sand bodies with porosity of greater than 6%, density of less than 2.55 g/cm³, and v_P/v_S of less than 1.8, and their seismic reflection characteristics are medium-low frequency continuous medium-strong reflection; according to the prediction results of high-quality reservoir “sweet spots”, three-dimensional well locations were deployed to increase the reserves production degree of tight gas reservoirs in Linxing Block by 15.3 percentage points, and the locations of 50 wells were optimized, increasing the gas recoverable reserves by 100×10⁸m³. The research results provide favorable technical support for the three-dimensional exploration and development of unproduced reserves of tight gas reservoirs in the Linxing Area, and have important reference significance for the exploration and effective production of reserves of the same type of tight sandstone gas reservoirs.

Key words： tight gas reservoirs; three-dimensional exploration; reserves production; potential tapping direction; Linxing Area

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