| 埋藏压实-侧向挤压过程对库车坳陷深层储层物理性质的改造机理 |
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| 引用本文： | 高志勇,崔京钢,冯佳睿,周川闽,石雨昕.埋藏压实-侧向挤压过程对库车坳陷深层储层物理性质的改造机理[J].现代地质,2017,31(2):302. |
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| 作者姓名： | 高志勇 崔京钢 冯佳睿 周川闽 石雨昕 |
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| 作者单位： | 1中国石油勘探开发研究院 实验研究中心，北京100083；
2提高石油采收率国家重点实验室(中国石油勘探开发研究院)，北京100083 |
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| 基金项目： | 国家科技重大专项“前陆冲断带及复杂构造区地质演化过程、深层结构与储层特征”(2016ZX05003 001);中国石油天然气股份有限公司课题“深层油气勘探开发理论认识与技术集成”(2014E 3209)。 |
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| 摘 要： | 早期长期浅埋、后期快速深埋及晚期强烈的侧向挤压作用是西部前陆盆地共性的地质演化过程，埋藏(机械)压实-侧向挤压过程对深层砂岩储层岩石物理性质与储集性具有重要的改造作用。开展成岩物理模拟实验研究，并与实际地质分析相结合，探索改造作用机制的演化过程，认为持续的垂向压实作用使储层碎屑颗粒由松散状至紧密堆积。在晚期侧向挤压、持续垂向埋藏压实共同作用下，深层碎屑颗粒表现为明显的共轭双方向定向排列特征。在快速垂向压实和强烈的侧向挤压应力作用下，石英、长石等颗粒内出现明显的无定向微裂缝、共轭剪切微裂缝。微裂缝的出现可增强颗粒的可溶蚀性，提高储层渗透性。明确埋藏(机械)压实-侧向挤压过程对深层砂岩储层物理性质与储集性的改造作用机制，对评价与预测深层有利储层的分布具有积极作用。
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| 关 键 词： | 深层储层 埋藏压实 侧向挤压 岩石物理性质 成岩物理模拟 库车坳陷 |
Modification Mechanism of Physical Properties of Deeply-buried Sandstone Reservoir due to the Burial Compaction and Lateral Extrusion in Kuqa Depression |
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| GAO Zhiyong,CUI Jinggang,FENG Jiarui,ZHOU Chuanmin,SHI Yuxin.Modification Mechanism of Physical Properties of Deeply-buried Sandstone Reservoir due to the Burial Compaction and Lateral Extrusion in Kuqa Depression[J].Geoscience——Journal of Graduate School,China University of Geosciences,2017,31(2):302. |
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| Authors: | GAO Zhiyong CUI Jinggang FENG Jiarui ZHOU Chuanmin SHI Yuxin |
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| Institution: | 1Petroleum Geology Research and Laboratory Center, Research Institute of Petroleum Exploration and Development,PetroChina,
Beijing100083，China;2 State Key Laboratory of Enhanced Oil Recovery(Research Institute of Petroleum Exploration
and Development,PetroChina)，Beijing100083,China |
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| Abstract: | Early shallow buried for a long time, the late quickly buried deep and strong lateral compression in western foreland basin are common geological evolution process. Burial compaction (mechanical) lateral extrusion process plays an important role to deep sandstone reservoir petrophysical properties and reservoir properties. Diagenetic physical modelling experiment is studied, and the process of the transformation mechanism is explored. It is considered that continuous vertical compaction makes reservoir clastic particles from loose to close packing. Under the joint action of the late lateral extrusion and continuous vertical burial compaction, astatic microfracture and conjugated shear fracture are evident in the granules of quartz, feldspar, etc. The emergence of micro cracks can strengthen particles corrosion resistance, and improve the reservoir permeability. Clearing burial compaction (mechanical) lateral extrusion process of deep sandstone reservoir physical properties and reservoir properties of transformation mechanism possesses a positive role for the distribution of favorable reservoir evaluation and prediction. |
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| Keywords: | deep reservoir burial compaction lateral extrusion rock physical property diagenetic physical modelling Kuqa Depression |
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