| 多期构造裂缝发育充填特征及其主控因素——以济阳坳陷平南潜山为例 |
| |
| 引用本文： | 李继岩.多期构造裂缝发育充填特征及其主控因素——以济阳坳陷平南潜山为例[J].沉积学报,2020,38(2):420-428. |
| |
| 作者姓名： | 李继岩 |
| |
| 作者单位： | 中国石化胜利油田分公司勘探开发研究院, 山东东营 257000 |
| |
| 基金项目： | 国家科技重大专项2016ZX05006-003 |
| |
| 摘 要： | 构造裂缝是下古生界碳酸盐岩储层中最重要的储集空间类型之一。以济阳坳陷平南下古生界潜山为研究对象，利用岩芯观察统计、元素地球化学、矿物学、岩芯常规分析等多种技术方法，分析了构造裂缝发育特征，阐明了构造裂缝发育期次与充填特征以及构造裂缝发育主控因素。研究结果表明:受不同时期、不同性质、不同方向构造应力场控制，研究区下古生界碳酸盐岩中发育形成期次、走向、充填时期、充填程度等具有明显差异的3组构造裂缝，分别为印支期南北向挤压形成的近东西向早期全充填构造裂缝、燕山期北北东—南南西向拉张形成的北西—南东向晚期部分全充填构造裂缝、喜山期北西—南东向拉张形成的北东—南西向晚期部分全充填的构造裂缝。构造裂缝发育程度主要受控于碳酸盐岩岩性、层厚2个内因与距断层距离1个外因等3个因素。
|
| 关 键 词： | 济阳坳陷 平南潜山 下古生界 碳酸盐岩 构造裂缝 发育期次与充填特征 主控因素 |
| 收稿时间： | 2019-10-14 |
Filling Characteristics and Main Controlling Factors for the Development of Multi-Phase Structural Fractures: A case of the Pingnan buried hill from Jiyang Depression |
| |
| Institution: | Research Institute of Petroleum Exploration & Development, Shengli Oilfield Company, SINOPEC, Dongying, Shandong 257000, China |
| |
| Abstract: | Structural fracture is one of the most important reservoir space types in carbonate reservoirs of the lower Paleozoic. In this paper, the development characteristics of structural fractures are analyzed, the development period and filling characteristics of structural fractures are clarified, and the main controlling factors of the development of structural fractures are defined by taking the Lower Paleozoic buried hills in Pingnan of Jiyang Depression as the research object, by means of variety of technical methods such as core observation and statistics, element geochemistry, mineralogy, core routine analysis, etc. The results show that there are three groups of tectonic fractures in the Lower Paleozoic carbonate rocks in the study area controlled by the tectonic stress field in different periods, and directions, properties, which have obvious differences in development and formation stages, fault strike, filling degree, and filling period. They are: early full-filling structural fractures in the east-west direction formed by compression in the nearly north-south direction of the Indosinian epoch, the northwest-southeast (NW-SE) direction late full filling structural fractures formed by north NNE-SSW direction tension in the Yanshanian period, and the NE-SW direction late partial full-filling structural fracture formed by NW-SE direction tension in the Himalayan period. The development degree of structural fracture is mainly controlled by three factors: 2 internal causes of lithology and thickness of carbonate rocks and 1 external cause: distance from fault. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《沉积学报》浏览原始摘要信息 |
| 点击此处可从《沉积学报》下载免费的PDF全文 |
|
