| 鲁西隆起区奥陶系碳酸盐岩成岩作用及其对储集性的控制作用 |
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| 引用本文： | 张云峰,李忠,王清晨,孔庆友.鲁西隆起区奥陶系碳酸盐岩成岩作用及其对储集性的控制作用[J].地质科学,2005,40(2):207-219. |
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| 作者姓名： | 张云峰 李忠 王清晨 孔庆友 |
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| 作者单位： | 大庆石油学院勘探系,黑龙江,大庆,163318;中国科学院地质与地球物理研究所,北京,100029;南京大学地球科学系,南京,210093 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以鲁西隆起区奥陶系碳酸盐岩沉积旋回与不整合面分析为基础, 应用薄片、铸体和阴极发光等室内分析技术, 对其成岩作用、成岩序列、孔隙演化及其特征进行了详细研究。研究区的成岩作用分为两类: 建设性成岩作用和破坏性成岩作用, 前者包括白云石化、压溶、去石膏化、溶蚀和破裂等作用; 后者以重结晶、胶结、压实、硅化和充填作用为主。奥陶系碳酸盐岩经历了多期次和多种类型的成岩作用演化, 与马家沟组相比, 三山子组多经历了一次其沉积后的短期表生和随后的埋藏作用。三山子组白云岩、马家沟组东黄山段、土峪段和阁庄段粉细晶白云岩以及八陡段不整合面以下的溶蚀角砾岩段发育次生孔洞缝系统, 是较为有利的储集层段。
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| 关 键 词： | 碳酸盐岩 成岩作用 孔隙演化 奥陶系储集层 鲁西隆起区 |
| 文章编号： | 0563-5020(2005)02-0207-13 |
| 收稿时间： | 2003-09-11 |
| 修稿时间： | 2003-09-11; |
DIAGENESIS AND ITS ROLE ON THE RESERVOIR OF ORDOVICIAN CARBONATE ROCKS IN THE WEST SHANDONG RISE |
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| Zhang Yunfeng,Li Zhong,Wang Qingchen,Kong Qingyou.DIAGENESIS AND ITS ROLE ON THE RESERVOIR OF ORDOVICIAN CARBONATE ROCKS IN THE WEST SHANDONG RISE[J].Chinese Journal of Geology,2005,40(2):207-219. |
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| Authors: | Zhang Yunfeng Li Zhong Wang Qingchen Kong Qingyou |
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| Institution: | 1. Department of Exploration, Daqing Petroleum Institute, Daqing, Helongjiang 163318;
2. Institute of Geology and Geophysics, Chinese Academy Sciences, Beijing 100029;
3. Department of Earth Science, Nanjing University, Nanjing 210093 |
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| Abstract: | Based on observation and survey in the West Shandong Rise, a piece of composite column was charted, and four depositional cycles and two unconformities were recognized. Applying synthetic techniques such as casting and slicing, the diagenetic successions, the pores’ evolution characteristics were studied systematically. The results showed that the Ordovician carbonate rocks in the West Shandong Rise underwent multi-stages of sedimentation——burial——supergene——reburial——supergene and more types of diagenesis such as compaction, cementation, dolomitization, silicification, pressolution, dissolusion, etc. They could be classified into two sorts: constructive diagenesis and destructive one. The former included dolomitization, pressolution,solution and fracturing which produced a great deal of secondary pores and improved the reservoir; the latter included recrystallization, silicification, cementation and compaction and filling which reduced the porosity and permeability of the carbonate rocks. The carbonate rocks of Sanshanzi Formation underwent more once short supergene and burial stages subsequently than that of the Majiagou Formation. Secondary porosity and fracture system developed in the fine-coarse crystalline dolostones of the Sanshanzi Formation, the silt-fine crystalline dolostones of the Donghuangshan, Tuyu and Gezhuang Members of Majiagou Formation, and the carbonate breccias under the unconformable surface in the Badou Member of Majiagou Formation. All of them were potential reservoir sections. |
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| Keywords: | The carbonate rocks Diagenesis Porosity evolution The Ordovician reservoirs The West Shandong Rise |
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