| 鄂尔多斯盆地子洲气田上古生界山西组、下石盒子组储集层特征对比研究 |
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| 引用本文： | 王若谷, 李文厚, 廖友运, 冯永玖, 郭艳琴, 马瑶, 许星. 鄂尔多斯盆地子洲气田上古生界山西组、下石盒子组储集层特征对比研究[J]. 地质科学, 2015, 50(1): 249-261. doi: 10.3969/j.issn.0563-5020.2015.16 |
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| 作者姓名： | 王若谷 李文厚 廖友运 冯永玖 郭艳琴 马瑶 许星 |
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| 作者单位： | 1. 陕西延长石油(集团)有限责任公司研究院 西安 710069; 2. 西北大学地质学系, 大陆动力学国家重点 实验室 西安 710069; 3. 中国煤炭地质总局航测遥感局遥感应用研究院 西安 710054; 4. 中国石油长庆 油田分公司勘探开发研究院 西安 710021; 5. 西安石油大学油气资源学院 西安 710065; 6. 中国石油长庆油田采气二厂 陕西榆林 719000 |
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| 基金项目： | 国家自然科学基金项目，国家科技重大专项，陕西省教育厅自然科学专项科研计划项目 |
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| 摘 要： | 鄂尔多斯盆地子洲气田山西组山23段和下石盒子组盒8段是该区天然气的主力储集层, 但其产能却存在很大差异.应用薄片鉴定、扫描电镜、高压压汞、恒速压汞及岩心分析资料, 分别对该地区上古生界山西组山23段和下石盒子组盒8段储集层进行了研究.子洲气田山23储层以石英砂岩为主, 孔隙类型多样, 粒间孔、溶孔、晶间孔发育, 喉道类别以微—细喉为主, 属相对低孔高渗型储层; 盒8储层则以岩屑砂岩为主, 孔隙类型主要为岩屑溶孔和晶间孔, 喉道类别以细—微喉为主, 属于相对低孔低渗型储层.山23段和盒8段储集层岩石类型、孔隙结构差别巨大, 造成了其储集性能的差异性.不同的沉积环境和成岩作用是造成其差异性的主要原因.
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| 关 键 词： | 子洲气田 山23段 盒8段 储层特征 孔隙类型 恒速压汞 沉积作用 成岩作用 |
| 收稿时间： | 2013-07-10 |
| 修稿时间： | 2013-07-10; |
Study on the characteristics of the Upper Paleozoic Shanxi and Xiashihezi Formation in Zizhou gas field,Ordos Basin |
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| Wang Ruogu, Li Wenhou, Liao Youyun, Feng Yongjiu, Guo Yanqin, Ma Yao, Xu Xing. Study on the characteristics of the Upper Paleozoic Shanxi and Xiashihezi Formation in Zizhou gas field, Ordos Basin[J]. Chinese Journal of Geology, 2015, 50(1): 249-261. doi: 10.3969/j.issn.0563-5020.2015.16 |
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| Authors: | Wang Ruogu Li Wenhou Liao Youyun Feng Yongjiu Guo Yanqin Ma Yao Xu Xing |
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| Affiliation: | 1. Research Institute of Yanchang Petroleum (Group) Co. Ltd., Xi'an 710069; 2. Department of Geology, State Key Laboratory of Continental Dynamics, Northwest University, Xi'an 710069; 3. Remote Sensing Application Institute of Aerial Photogrammetry and Remote Sensing of China Coal, Xi'an 710054; 4. Research Institute of Exploration and Development, Changqing Oilfield Company, Xi'an 710021; 5. Institute of Oil and Gas Resources, Xi'an Shiyou University, Xi'an 710065; 6. No.2 Gas Production Plant, Changqing Oilfield Company, PetroChina, Yulin, Shaanxi 719000 |
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| Abstract: | The Shan 23 layer of Shanxi Formation and He 8 layer of Lower Shihezi Formation are the dominant reservoirs of Zizhou gas field in Ordos Basin. However, there exists a remarkable productivity lag between the two reservoirs. By means of microscope, SEM, high-pressure mercury penetration, constant-speed mercury penetration and core analysis, the Shan 23 and He 8 reservoirs have been carefully studied in this paper. The results showed that the Shan 23 reservoir was mainly quartz sandstone with multiply types of pores, such as inter-granular pores, dissolving pores and inter-crystal pores, and throat family is dominated by micro-fine throat. Shan 23 reservoir could be characterized as low porosity and relatively high permeable reservoir. The He 8 reservoir was lithic sandstone with the dominant pore types of lithic-dissolving pores and inter-crystal pores, and throat family is dominated by fine-micro throat. He 8 reservoir could be identified as low porosity and relatively low permeable reservoir. The enormous differences between rock types and pore structures of Shan 23 and He 8 reservoirs led to the differential reservoir property. Distinct depositional environments and diagenesis were the major courses of their differences. |
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| Keywords: | Zizhou gas field Shan 23 layer He 8 layer Reservoir characters Porosity type Constant-speed mercury penetration Deposition Diagenesis |
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