| 李 虎.石西油田石炭系潜山火山岩油藏裂缝特征与分布[J].地质与勘探,2017,53(6):1219-1228 |
| 石西油田石炭系潜山火山岩油藏裂缝特征与分布 |
| Characteristics and distribution of cracks in carboniferous buried volcanic reservoirs of the Shixi oilfield |
| 投稿时间：2017-03-26 修订日期：2017-07-25 |
| DOI： |
| 中文关键词: 潜山 火山岩 裂缝特征 分布规律 石炭系 石西油田 |
| 英文关键词: buried hill, volcanic rock, crack characteristics, distribution rule, Carboniferous,Shixi oilfield |
| 基金项目:构造与油气教育部重点实验室开放课题（编号:TPR-2016-05）、天然气地质四川省重点实验室开放基金（编号:2016trqdz01）联合资助 |
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| 中文摘要: |
| 裂缝的发育情况对石西油田石炭系潜山火山岩油藏的勘探开发有重要作用。综合利用区域地质、岩心、常规测井、成像测井以及生产动态等资料对研究区裂缝特征及分布规律开展综合研究。研究表明：区内裂缝类型分为构造缝、风化缝、溶蚀缝、收缩缝，其中构造缝（剪切缝）和风化缝比较发育，裂缝总体发育规模中等，宽度较大，密度小，间距大；根据成像测井解释及构造解析，认为该区裂缝分为四期，其中海西运动中、晚期为主要的成缝期；裂缝主要受岩性、岩相、构造位置以及古地貌的控制；裂缝在纵向上主要分布在石炭系顶面以下25~150m范围内，在平面上主要位于断裂带附近、潜山构造高部位以及背斜长轴方向。 |
| 英文摘要: |
| Understanding the development situation of cracks plays an important role in exploration of Carboniferous buried volcanic reservoirs of the Shixi Oilfield. The characteristics and distribution of these cracks were studied by using data of regional geology, cores, conventional logging, imaging logging and production dynamic conditions. The results show that the cracks can be classified into tectonic, weathered, dissolution, and shrinkage types, of which the tectonic and weathered fissures are dominant. Overall the cracks are of medium size, big width, small density and large spacing。According to the imaging logging interpretation and tectonic analysis, the cracks are divided into four periods of generation, of which the main periods are the middle and late Hercynian movement. They are mainly controlled by the lithology, lithofacies, structural location and palaeogeomorphology。Vertically, the cracks are mainly distributed in the 25~150 m range below the top Carboniferous System. On the plane, they are mostly concentrated near fault zones, high position of buried hills and long axes of anticlines. |
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