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1. 中国石油塔里木油田公司
2. 中国石油天然气集团有限公司超深层复杂油气藏勘探开发技术研发中心
3. 新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心
4. 中国地质大学(武汉)资源学院
5. 中国地质大学(武汉)深圳研究院
Published:2026
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范坤宇, 马奔奔, 何巧林, et al. 库车坳陷白垩系亚格列木组深层致密砂岩裂缝成因与控储意义[J]. Bulletin of Geological Science and Technology, 2026, 45(4): 23-37.
范坤宇, 马奔奔, 何巧林, et al. 库车坳陷白垩系亚格列木组深层致密砂岩裂缝成因与控储意义[J]. Bulletin of Geological Science and Technology, 2026, 45(4): 23-37. DOI: 10.19509/j.cnki.dzkq.tb20250152.
深层-超深层致密砂岩储层具有巨大油气勘探潜力,裂缝的发育与空间分布是深层-超深层致密砂岩储集性能改善的关键因素。为明确致密砂岩裂缝成因与控储意义,以塔里木盆地库车坳陷白垩系亚格列木组为研究对象,综合钻井岩心、铸体薄片、激光共聚焦、扫描电镜、碎屑锆石测年、重矿物组成及碳氧稳定同位素等分析,查明亚格列木组深层致密砂岩裂缝的成因类型与主控因素,建立裂缝控储演化模式。结果表明:A井区岩石类型主要为岩屑砂岩和长石岩屑砂岩,岩屑类型以变质岩为主,B井区岩石类型主要为岩屑砂岩,岩屑类型以沉积岩和岩浆岩为主,B井区岩屑含量更高。研究区主要发育3期构造裂缝:(1)第Ⅰ期裂缝开度较宽(2~4 mm),为高角度、近垂直缝(70°~90°),裂缝平直光滑,以剪切缝为主,缝内方解石充填,充填时间在65~45 Ma,对应为燕山晚期-喜山早期缓慢浅埋藏阶段;(2)第Ⅱ期裂缝开度较窄(1~2 mm),为中、高角度缝(40°~60°),裂缝略微弯曲,以张-剪复合缝为主,缝内高岭石胶结物充填,裂缝充填时间在40~20 Ma,对应为喜山中期快速深埋阶段;(3)第Ⅲ期裂缝开度最窄(0.2~1 mm),为低角度缝、近水平缝(10°~30°),裂缝弯曲,主要以张性缝为主,缝内铁白云石胶结物充填,充填时间在10~6 Ma,对应为喜山晚期推覆调整阶段。在统一构造挤压背景下,由于不同物源体系和岩石组分,A井区和B井区裂缝控储模型存在差异性:A井区脆性矿物含量高,在强烈构造挤压过程中裂缝的发育程度高,有利于储层后期酸性溶蚀,增孔提渗效应明显。因此,整体上A井区储层质量要好于B井区。研究结果可为库车坳陷深层致密砂岩油气高效勘探开发提供地质依据。
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State Key Laboratory of Petroleum Resources and Prospecting, ChinaUniversity of Petroleum, Beijing, 102249, China,College of Geosciences, China University of Petroleum, Beijing,102249, China,State Key Laboratory of Petroleum Resources and Prospecting, ChinaUniversity of Petroleum, Beijing, 102249, China,Research Institute of Petroleum Exploration and Development,PetroChina, Beijing, 100083, China,College of Geosciences, China University of Petroleum, Beijing,102249, China,Department of Earth Sciences, University College London, Gower Street,London, WC1E 6BT, UK,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms andEffective Development, SINOPEC Exploration and Production ResearchInstitute, Beijing, 100083, China,College of Geosciences, China University of Petroleum, Beijing,102249, China,Department of Geosciences and Engineering, Delft University ofTechnology, Stevinweg 1, 2628 CN Delft, the Netherlands,State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms andEffective Development, SINOPEC Exploration and Production ResearchInstitute, Beijing, 100083, China,Bureau of Economic Geology, University of Texas at Austin, Austin, TX 78713, USA,College of Geosciences, China University of Petroleum, Beijing,102249, China,State Key Laboratory of Petroleum Resources and Prospecting, ChinaUniversity of Petroleum, Beijing, 102249, China,College of Geosciences, China University of Petroleum, Beijing,102249, China,College of Geosciences, China University of Petroleum, Beijing,102249, China.The dead line for oil and gas and implication for fossil resource prediction[J].Earth System Science Data,2020.
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徐珂,鞠玮,张辉,梁艳,尹国庆,王志民,徐浩然,张玮,梁景瑞.塔里木盆地库车坳陷白垩系巴什基奇克组致密砂岩力学性质影响因素及其变化规律[J].石油实验地质,2024(04).
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刘振峰,刘忠群,郭元岭,季玉新,李王鹏,林恬,陈天胜,金武军.“断缝体”概念、地质模式及其在裂缝预测中的应用——以四川盆地川西坳陷新场地区须家河组二段致密砂岩气藏为例[J].石油与天然气地质,2021(04).
易士威,李明鹏,范土芝,杨帆,方辉,黄福喜,金武弟.塔里木盆地库车坳陷克拉苏和东秋断层上盘勘探突破方向[J].石油与天然气地质,2021(02).
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