| 轮古东走滑断裂破碎带结构及与油气关系 |
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| 引用本文： | 韩杰,袁源,洪涛,吴梅莲,裴广平,刘俊锋,张蕾.轮古东走滑断裂破碎带结构及与油气关系[J].中国地质,2016(4):1304-1316. |
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| 作者姓名： | 韩杰 袁源 洪涛 吴梅莲 裴广平 刘俊锋 张蕾 |
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| 作者单位： | 中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒 841000,中国石油大学(北京)地球科学学院, 北京 102249;中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒 841000,中国石油东方地球物理公司研究院库尔勒分院, 新疆 库尔勒 841000 |
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| 基金项目： | 中国石油天然气股份有限公司重大科技攻关专项“塔里木油田勘探开发关键技术研究及应用”（22121G20112001）资助。 |
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| 摘 要： | 利用最新处理完成的轮古东300 km2叠前深度偏移地震资料,多手段识别出轮古东气田发育3期4组断裂。断裂控制了裂缝走向与裂缝发育密度,裂缝主要为高角度(45°~75°)构造窄裂缝,沿裂缝存在溶蚀,走向主要为NESW。纵向上,一间房组裂缝发育密度最大(14条/100 m),其次为鹰山组(6条/100 m)和良里塔格组(4条/100 m);平面上,裂缝主要分布在主干断裂周边1 km范围内,随着距断裂距离增大,裂缝发育强度(裂缝线密度)呈指数降低。在此基础上,综合考虑主干断裂及伴生裂缝发育特征,将轮古东断裂破碎带平面上划分为"羽状破碎带、转换破碎带、斜列破碎带、复合破碎带"4种结构,羽状破碎带分布面积最广,是油气最富集的区域,是目前高效井的集中分布区,围绕羽状破碎带的钻探为走滑断裂控储控藏研究和寻找新的油气富集区域提供了新思路。
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| 关 键 词： | 轮古东 奥陶系 碳酸盐岩 断裂 凝析气藏 |
| 收稿时间： | 2015/6/25 0:00:00 |
| 修稿时间： | 2015/10/16 0:00:00 |
The structure of crushed zone near the Lungudong strike slip fault and its relationship with the gas and oil |
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| HAN Jie,YUAN Yuan,HONG Tao,WU Mei-lian,PEI Guang-ping,LIU Jun-feng and ZHANG Lei.The structure of crushed zone near the Lungudong strike slip fault and its relationship with the gas and oil[J].Chinese Geology,2016(4):1304-1316. |
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| Authors: | HAN Jie YUAN Yuan HONG Tao WU Mei-lian PEI Guang-ping LIU Jun-feng and ZHANG Lei |
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| Institution: | Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, 841000, Xinjiang, China,Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, 841000, Xinjiang, China,College of Geoscience, China University of Petroleum(Beijing), Beijing, 102249, China;Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, 841000, Xinjiang, China,Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, 841000, Xinjiang, China,Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, 841000, Xinjiang, China,Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, 841000, Xinjiang, China and Korla Branch of Research Institute, Bureau of Geophysical Prospecting INC, China National Petroleum Corporation, Korla 841000, Xinjiang, China |
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| Abstract: | Using the latest seismic data of 300 km2 depth migration before stack in Lungudong, the authors identified three stages and four groups of fractures in Lungudong gas field by various means. The strike and compactness of the fractures are controlled by faults. The fractures are mainly high angle(45°-75°)narrow fractures. Corrosion is developed along the fractures, and the dominant strike is NE-SW. In the longitudinal field, the fractures of Yijianfang Formation has maximum density(14 fractures per 100 m), followed by the compactness of the fractures of Yingshan Formation (6 fractures per 100 m) and the compactness of the fractures of Lianglitage Formation (4 fractures per 100 m). In the plane field, fracture is mainly distributed in the area within 1 km of the main faults. With the increasing distance from the fault, the degree of fracture development (linear density of fractures) decreases with the tendency of index number. On such a basis, the authors have comprehensively considered developmental characteristics of main fractures and accompanying fractures. In the plane field, crushed zones of Lungudong fault are divided into pinnate crushed zone, transform crushed zone, echelon crushed zone,and composite crushed zone. The area of pinnate crushed zones is the largest and most gas and oil spots are concentrated here, and high-efficiency wells are centrally distributed in this area at present. The exploration drill holes around the pinnate crushed zone offer a new train of thought for the study of strike slip fault controlling oil and gas reservoir and finding new rich domains of gas and oil. |
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| Keywords: | Lungudong Ordovician carbonate rock fault condensate gas reservoir |
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