| 摘要: |
| 由于低阻油层的电阻率低于或接近邻近水层的电阻率，给测井评价带来很大难度。根据济阳坳陷已发现的具 有典型意义的低阻油层,在研究微观成因机理的基础上，分析了各种微观成因下的地质特征，并研究了低阻微观成 因机理与宏观地质因素的匹配关系。研究结果表明，济阳坳陷低阻油层的形成和分布主要受沉积背景、沉积相带、 |
| 关键词: 济阳坳陷 低阻油层 微观成因机理 宏观地质因素 控制因素 |
| DOI： |
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| Study on macro-geologic control genesis of micro-geological causes in low-resistivity oil layer of Jiyang depression |
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WU Jin-long1,SUN Jian-meng1,ZHU Jia-jun2,GENG Sieng-chen2,LI Zhao-cheng1,ZHANG Yuan-chun3
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(1. Faculty of Geo-Resource and Information in China University of Petroleum，Dongying 257061，Shandong Prauince, China;2. Geological Science Research Institute of Shengli Oilfield, Dongying 257015, Shandong Province，China;3. School of Resource and Information in China University of Petroleum，Beijing 102249, China)
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| Abstract: |
| Its very difficult to distinguish hydrocarbon bearing reservoirs frcan water bearing reservoirs electrically because of the similar resistivity between them. Based on the typical low-resistivity (LR) oil layer of Jiyang depression and study of micro-geological causes, the geologic characteristics of LR oil layer with various micro-geological causes were analyzed, and the interaction between micro-geological causes and macrogeoiogic genesis was investigated. The results show that the fomung and distribution of LR oil layer are controlled by geofactors including depositional background, sedimentary facies, diagenesis, motive power of petroieum deposit and formation water. The LR oil layers caused by formation water with high salinity water are controlled by ancient salty deposition environment or faulted structure; those caused by high free water saturation are controlled by the low structure; those caused by high bound water saturation are controlled by deposition and diagenesis. Low resistivity pays resulting from the added conductivity of shales are controlled by the active blets of volcanos rich in rags and tuff, which leads to the aggregation of montmorillonite. Combination of micro-geological causes and macrogeologic genesis is more promising in recognition of LR oil layers. |
| Key words: Jiyang depression low-resistivity oil layer micro-geological causes macrogeoiogic genesis control genesis |
