| 元坝气田长兴组储层特征与形成主控因素研究 |
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| 引用本文： | 郭彤楼.元坝气田长兴组储层特征与形成主控因素研究[J].岩石学报,2011,27(8):2381-2391. |
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| 作者姓名： | 郭彤楼 |
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| 作者单位： | 中国石化勘探南方分公司,成都 610041 |
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| 基金项目： | 本文受国家自然科学基金重点项目(40739901)资助. |
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| 摘 要： | 本文以宏、微观资料相结合的方法,以优质储层发育与形成为主线开展了元坝气田长兴组礁滩储层发育特征研究。研究证明:(1)元坝气田长兴组礁滩储层岩石类型以亮晶生屑灰岩与亮晶生屑白云岩等颗粒岩为主,西部礁滩储层白云岩含量高于东部,长二段礁滩储层白云岩含量高于长一段浅滩储层;(2)储层类型以孔隙型为主,裂缝-孔隙型次之,储集空间包括晶间溶孔、晶间孔、粒间溶孔及裂缝;(3)元坝地区长兴组礁滩储层以Ⅱ、Ⅲ类为主,西部物性好于东部,长二段储层厚度远大于长一段。元坝地区长兴组储层受沉积相、构造活动及成岩作用等控制,受沉积前古地貌和燕山期后构造作用的双重控制,西部储层物性好于东部;3期破裂作用与3期溶蚀作用是形成储层的关键。
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| 关 键 词： | 岩石学 储层 成岩作用 储层控制因素 长兴组 元坝 |
| 收稿时间： | 2/1/2011 12:00:00 AM |
| 修稿时间： | 2011/6/25 0:00:00 |
Reservoir characteristics and its controlling factors of the Changxing Formation reservoir in the Yuanba gas field,Sichuan basin,China |
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| GUO TongLou.Reservoir characteristics and its controlling factors of the Changxing Formation reservoir in the Yuanba gas field,Sichuan basin,China[J].Acta Petrologica Sinica,2011,27(8):2381-2391. |
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| Authors: | GUO TongLou |
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| Institution: | Southern Exploration Company, SINOPEC, Chengdu 610041, China |
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| Abstract: | Based on the macroscopic and microscopic research, the present paper focus on development and formation of high-quality reservoir, features of reef-shoal reservoir of Changxing Formation in Yuanba gas field are researched and following characteristics are concluded. First, the rock types are dominantly sparry bioclastic limestone and sparry bioclastic dolomite, with higher dolomite content in the west reel-shoal reservoir than in the east, and higher in Chang2 member than in Chang1 shoal reservoir. Second, the reservoir types are dominantly pore type, with fracture-pore type for the second, reservoir space including intercrystalline solutional void, intercrystalline pore, intergranular dissolved pore and fracture. Third, the reservoir is mainly type II and III, with physical properties better in the west than in the east, and reservoir much thicker in Chang2 than in Chang1. The reservoir of Changxing Formation in Yuanba area was controlled by sedimentary facies, tectonic movement and diagenesis, and affected by the double action of predeposit palaeogeomorphology and post-Yanshanian movement. The physical properties of reservoir are better in the west than in the east. Three-stage fracture and dissolution are the key factors for the reservoir formation. |
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| Keywords: | Petrology Reservoir Diagenesis Reservoir controlling factor Changxing Formation Yuanba |
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