| 陕甘宁盆地中部大气田古岩溶储层特征与含气性 |
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| 引用本文： | 应维华.陕甘宁盆地中部大气田古岩溶储层特征与含气性[J].石油天然气学报,1995,17(2):10-14,25. |
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| 作者姓名： | 应维华 |
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| 作者单位： | 江汉石油学院石油地质系 |
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| 基金项目： | 国家“八五”重点攻关项目 |
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| 摘 要： | 陕甘宁盆地中部气田的主要储气层段为奥系马五段的古岩溶层。该区有两个岩溶旋回期，相应形成折两个岩溶层：第Ｉ岩溶层（即马五＾１１￣３储渗体）分布在靖边古潜台的高部位，是陕甘宁盆地中部大气田的主力气层；第Ⅱ岩溶层（即马五＾４１顶部储渗体）主要分布在城川岩溶平台和靖边古潜台内的侵蚀谷（窗）附近，为局部发育的储气层。
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| 关 键 词： | 岩溶油气藏 储集层 早奥陶世 气田 含气性 |
Characteristics and Gas-bearing Potential of Ordovician Palaeokarst Layers in the Central Shanganning Basin |
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| Ying Weihua.Characteristics and Gas-bearing Potential of Ordovician Palaeokarst Layers in the Central Shanganning Basin[J].Journal of Oil and Gas Technology,1995,17(2):10-14,25. |
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| Authors: | Ying Weihua |
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| Abstract: | At the end of Ordovician Period,a differential elevation occurred in the central Shanganning Basin due to the Caledonian Movement.This elevation resulted in a widespread sedimentary gap and long-time weathering and leaching,and developed vugular-solution pores and fractures in the top of Ordovician system.There are two palaeokarst layers in the study area.The first situated at the top of the Mawu member,it is the master reservior of the gas-field.The second in the top of Mawu-4 reservior occurred near the incised valley,it is a local reservior of the gas-field. |
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| Keywords: | karst reservoir reservoir karst early Ordovician Eerduosi basin |
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