| 准噶尔腹部火山岩风化壳储层特征及其影响因素 |
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| 引用本文： | 李治,秦启荣,李朋波,顿雅航,付晓燕.准噶尔腹部火山岩风化壳储层特征及其影响因素[J].地质找矿论丛,2018,33(4):589-596. |
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| 作者姓名： | 李治 秦启荣 李朋波 顿雅航 付晓燕 |
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| 作者单位： | 天然气地质四川省重点实验室, 成都 610500;西南石油大学地球科学与技术学院, 成都 610500,天然气地质四川省重点实验室, 成都 610500;西南石油大学地球科学与技术学院, 成都 610500;构造与油气教育部重点实验室, 武汉 430074,中国石油新疆油田分公司石西油田作业区, 新疆 克拉玛依 834000,天然气地质四川省重点实验室, 成都 610500;西南石油大学地球科学与技术学院, 成都 610500,天然气地质四川省重点实验室, 成都 610500;西南石油大学地球科学与技术学院, 成都 610500 |
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| 基金项目： | 天然气地质四川省重点实验室开放基金项目"准噶尔西北缘中拐凸起石炭系火山岩风化壳储层特征及控制因素（编号：2016trqdz01）"、构造与油气教育部重点实验室开放课题项目"火山岩风化壳储层表征及预测——以准噶尔盆地西北缘中拐凸起石炭系为例（编号：TPR-2016-05）"联合资助。 |
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| 摘 要： | 文章通过大量岩芯、铸体薄片观察和测井资料分析,对准噶尔腹部石西石炭系火山岩风化壳储层进行了详细地研究。研究结果表明,该火山岩风化壳储层的储集空间主要有基质溶孔、气孔或杏仁体溶孔、角砾间溶孔、微裂缝和裂缝等,其中与裂缝连通的各类溶孔占主导地位;在岩石分布上以集块岩、条带状熔岩、角砾熔岩和致密凝灰岩为主,玄武岩、安山岩和流纹岩则相对较少;储层物性主要表现为高孔低渗,只有裂缝具有较高的渗透率,且裂缝以高角度缝和直立缝为主。研究还发现,岩性岩相、裂缝和风化淋滤作用是影响该风化壳储层的主要因素。区内油层主要聚中在构造高部位、靠近断裂带和有利岩相区域;油层分布在离石炭系风化壳顶面25~150 m的范围内。
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| 关 键 词： | 石西油田 储层特征 火山岩 风化壳 影响因素 准噶尔盆地 新疆 |
| 收稿时间： | 2017/9/6 0:00:00 |
Reservoir characteristics and influence factor of weathering volcanic crust: A case study of Carboniferous System of Shixi Oilfield in the center of Junggar Basin |
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| LI Zhi,QIN Qirong,LI Pengbo,DUN Yahang and FU Xiaoyan.Reservoir characteristics and influence factor of weathering volcanic crust: A case study of Carboniferous System of Shixi Oilfield in the center of Junggar Basin[J].Contributions to Geology and Mineral Resources Research,2018,33(4):589-596. |
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| Authors: | LI Zhi QIN Qirong LI Pengbo DUN Yahang and FU Xiaoyan |
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| Institution: | School of Science and Technology, Southwest Petroleum University, Chengdu 610500, China;Sichuan Key Laboratory of Natural Gas Geology, Chengdu 610500, China,School of Science and Technology, Southwest Petroleum University, Chengdu 610500, China;Sichuan Key Laboratory of Natural Gas Geology, Chengdu 610500, China;Structure and oil and gas key laboratory of ministry of education, Wuhan 430074, China),Operation area in Shixi, Xinjiang oil field branch company, Petro China, Karamay City 834000, Xinjiang, China,School of Science and Technology, Southwest Petroleum University, Chengdu 610500, China;Sichuan Key Laboratory of Natural Gas Geology, Chengdu 610500, China and School of Science and Technology, Southwest Petroleum University, Chengdu 610500, China;Sichuan Key Laboratory of Natural Gas Geology, Chengdu 610500, China |
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| Abstract: | The volcanic weathering crust reservoirs of Carboniferous in Shixi field in the center of Junggar Basin are studied on basis of observing a large number of cores and cast thin sections and analyzing logging data. The results demonstrate the main pore types of the reservoir, such as matrix dissolution pores, pores or almond dissolution pores, breccia pores, microcracks and fracture. Types of the pore connecting with the fractures are important. Agglomerate, banded lava, breccia lava and dense tuff are the main lithologies of the study area, basalt, andesite and rhyolite less. The physical property of the lithologies is characterized by high porosity and low permeability. The fractures are generally vertical or dip at high angle. Lithofacies, fracture, weathering and leaching. are the main factors to influence the reservoir. The distribution of the main oil layers in the area shows that they occur mainly in the high structural position, near fault zone and favorable lithofacies and in the range of 25-150m from the top surface of the Carboniferous weathering crust. |
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| Keywords: | Shixi oilfield reservoir characteristics volcanics weathering crust influence factor Zhunger Basin Xinjiang |
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