New exploration fields and resource potential of tight sandstone gas and coalbed methane in Turpan-Hami Basin

doi:10.7623/syxb202501008

Acta Petrolei Sinica ›› 2025, Vol. 46 ›› Issue (1): 104-117,172.DOI: 10.7623/syxb202501008

• PETROLEUM EXPLORATION • Previous Articles

New exploration fields and resource potential of tight sandstone gas and coalbed methane in Turpan-Hami Basin

Li Jianzhong¹, Chen Xuan¹, Gong Deyu^1,2, Lin Lin¹, Liu Juntian¹, Zhang Hua¹, Lin Tong², Wang Bo³, Wang Jie¹

1. PetroChina Tuha Oilfield Company, Xinjiang Hami 839009, China;
2. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
3. PetroChina Hangzhou Research Institute of Geology, Zhejiang Hangzhou 310023, China

Received:2024-09-09 Revised:2024-11-12 Published:2025-02-15

吐哈盆地致密砂岩气及煤层气勘探新领域与资源潜力

李建忠¹, 陈旋¹, 龚德瑜^1,2, 林霖¹, 刘俊田¹, 张华¹, 林潼², 王波³, 王杰¹

1. 中国石油吐哈油田公司新疆哈密 839009;
2. 中国石油勘探开发研究院北京 100083;
3. 中国石油杭州地质研究院浙江杭州 310023

通讯作者: 龚德瑜,男,1983年7月生,2012年获成都理工大学博士学位,现为中国石油勘探开发研究院高级工程师,主要从事油气地质与地球化学研究工作。Email:deyugong@petrochina.com.cn
作者简介:李建忠,男,1968年11月生,1999年获石油勘探开发科学研究院博士学位,现为中国石油吐哈油田公司教授级高级工程师,主要从事石油地质综合研究及油气勘探管理工作。Email:lijizh@petrochina.com.cn
基金资助:
中国石油天然气集团有限公司科技项目"吐哈盆地风险勘探领域和目标研究、工程技术攻关及现场试验"(2023YQXNCS001-09)和中国石油天然气集团有限公司攻关性应用性科技专项"深地煤岩气成藏理论与效益开发技术研究"(2023ZZ18)资助。

Abstract

Abstract: In the remaining gas resources in Turpan-Hami Basin, the tight gas represented by tight sandstone gas and coalbed methane accounts for 89.08 % , which is the critical field to search for large-scale reserves in the next step, but the research degree is low at present. In order to clarify the exploration prospect of tight gas in Turpan-Hami Basin, the formation conditions of hydrocarbon, reservoir, and accumulation of tight sandstone gas and coalbed methane in the Jurassic Shuixigou Group are systematically sorted out and summarized, their resource potential is estimated, and the next exploration direction is pointed out. There are five types of tight gas reservoirs in Turpan-Hami Basin, including near-source structural gas reservoirs, low-saturated lithologic gas reservoirs at the slope, in-source tight sandstone gas reservoirs, far-source coalbed methane reservoirs and in-source coalbed methane reservoirs. The oil and gas charging mainly occurred in Middle Jurassic to Late Early Cretaceous. The predicted total resource of tight sandstone gas in Turpan-Hami Basin is approximately 6 800×10⁸m³, and the predicted total coal gas resources are approximately 2.4×10¹²m³. Rich hydrocarbon kitchens, favorable facies zones, fracture development degree, cap seal conditions and structural stability mainly control the distribution of tight sandstone gas reservoirs in Turpan-Hami Basin. The main controlling factors of coalbed methane accumulation include coal seam distribution, coal maturity, reservoir physical property and cap seal conditions. Three favorable exploration areas of tight sandstone gas, i.e., north Shengbei subsag, Qiudong subsag, and Xiaocaohu subsag, are selected. Three favorable areas for coalbed methane exploration were selected, i.e., the northern piedmont belt of Taibei sag, the Wenjisang structure zone and the Hongtai-Gedatai structure zone of Qiudong subsag.

Key words: Turpan-Hami Basin, tight sandstone gas, coalbed methane, accumulation characteristics, exploration field, resource potential

摘要： 吐哈盆地剩余天然气资源中,以致密砂岩气和煤层气为代表的致密气占比达89.08 % ,是盆地下一步寻找规模储量的重点领域,目前研究程度较低。为明确吐哈盆地致密气勘探前景,系统分析和总结侏罗系水西沟群致密砂岩气和煤层气的成烃、成储和成藏条件,评价其资源潜力,并指明了下一步勘探方向。吐哈盆地主要发育近源构造气藏、斜坡低饱和岩性气藏、源内致密砂岩气藏、远源煤层气藏和源内煤层气藏5类致密气藏,油气充注主要发生在中侏罗世—早白垩世晚期。盆地致密砂岩气的预测总资源量近6 800×10⁸m³,煤层气的预测总资源量约为2.4×10¹²m³。吐哈盆地致密砂岩气藏的分布主要受富烃源灶、有利相带、裂缝发育程度、盖层封闭条件和构造稳定性等因素共同控制;煤层气的成藏主要受控于煤层分布、煤岩成熟度、储层物性和盖层条件等。优选胜北洼陷北洼槽、丘东洼陷和小草湖洼陷为盆地致密砂岩气勘探有利区,优选台北凹陷北部山前带、丘东洼陷温吉桑构造带和红台—疙瘩台构造带为煤层气勘探有利区。

关键词: 吐哈盆地, 致密砂岩气, 煤层气, 成藏特征, 勘探领域, 资源潜力

CLC Number:

TE132.2

Li Jianzhong, Chen Xuan, Gong Deyu, Lin Lin, Liu Juntian, Zhang Hua, Lin Tong, Wang Bo, Wang Jie. New exploration fields and resource potential of tight sandstone gas and coalbed methane in Turpan-Hami Basin[J]. Acta Petrolei Sinica, 2025, 46(1): 104-117,172.

李建忠, 陈旋, 龚德瑜, 林霖, 刘俊田, 张华, 林潼, 王波, 王杰. 吐哈盆地致密砂岩气及煤层气勘探新领域与资源潜力[J]. 石油学报, 2025, 46(1): 104-117,172.

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New exploration fields and resource potential of tight sandstone gas and coalbed methane in Turpan-Hami Basin

吐哈盆地致密砂岩气及煤层气勘探新领域与资源潜力

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