| 四川盆地雷口坡末期古岩溶特征及其对储层的影响——以龙岗地区雷口坡组四~3段为例 |
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| 引用本文： | 辛勇光,谷明峰,周进高,倪超,宫清顺,王小芳,吕玉珍,郝毅.四川盆地雷口坡末期古岩溶特征及其对储层的影响——以龙岗地区雷口坡组四~3段为例[J].海相油气地质,2012,17(1):73-78. |
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| 作者姓名： | 辛勇光 谷明峰 周进高 倪超 宫清顺 王小芳 吕玉珍 郝毅 |
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| 作者单位： | 中国石油杭州地质研究院 |
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| 摘 要： | 四川盆地龙岗地区中三叠统雷口坡组顶部雷四3段发育一套风化壳岩溶型白云岩储层。储层似层状成规模分布。古岩溶作用以表生裸露期风化壳岩溶作用为主,受古地质背景和风化壳岩性组合影响,古岩溶特征主要表现为:溶蚀时间较短,溶蚀作用较弱,充填作用及膏溶作用较强。在研究区内风化壳岩溶作用是影响储层发育的关键因素,它对储层既有建设性作用又有破坏性作用。
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| 关 键 词： | 四川盆地 龙岗地区 雷口坡组 岩溶作用 岩溶型储层 白云岩储层 |
Characteristics and Affection of Middle Triassic Karstification on Leikoupo 43 Reservoir in Longgang Area, Sichuan Basin |
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| Xin Yongguang
,
Gu Mingfeng
,
Zhou Jingao
,
Ni Chao
,
Gong Qingshun
,
Wang Xiaofang
,
L Yuzheng
,
Hao Yi.Characteristics and Affection of Middle Triassic Karstification on Leikoupo 43 Reservoir in Longgang Area, Sichuan Basin[J].Marine Origin Petroleum Geology,2012,17(1):73-78. |
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| Authors: | Xin Yongguang Gu Mingfeng Zhou Jingao Ni Chao Gong Qingshun Wang Xiaofang L Yuzheng Hao Yi |
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| Institution: | Xin Yongguang
,
Gu Mingfeng
,
Zhou Jingao
,
Ni Chao
,
Gong Qingshun
,
Wang Xiaofang
,
L(U) Yuzheng
,
Hao Yi |
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| Abstract: | A set of layer-liked karstic dolostone reservoir as a weathering crust develops at the top bed of Middle Triassic Leikoupo 4 Member(Lei 4 3) in Longgang area,Sichuan Basin.The epidiagenetic weathering crust palaeokarst is dominant in the palaeokarstication.By the affection of the palaeogeologic setting and lithologic association,the palaeokarst is characteristic of the short-time and weak dissolution,and strong filling and anhydrite decomposition.It is shown that the palaeokarstification of weathering crust is the key factor in development of the reservoir,which plays actions of not only construction but also destruction for the reservoir. |
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| Keywords: | Middle Triassic Leikoupo Formation Karstification Karst reservoir Dolostone reservoir Longgang Area Sichuan Basin |
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