| 应用地层倾角测井资料研究古河流特征 |
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| 引用本文： | 刘文彬,郑承光.应用地层倾角测井资料研究古河流特征[J].地质科学,1994,29(3):291-297. |
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| 作者姓名： | 刘文彬 郑承光 |
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| 作者单位： | 1. 中国科学院兰州地质研究所 兰州 730000;2. 长庆石油勘探开发研究院 庆阳 745101 |
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| 摘 要： | 鄂尔多斯盆地绥德-榆林地区石炭、二叠系砂岩体大多为点砂坝,通过本区仅有的3口井倾角测井资料的研究,提供了古河流特征参数。这些数据表明石盒子和山西期的河流类型为辫状河-曲流河;太原期为低弯度曲流河。砂体宽度300-900m,平均496m.经镇川堡气田试采验证,这种认识与客观实际相符。另外,本区地层倾角测井所得垂直于倾向的走向方向才是河流的古流向,为测井数据合理解释古流向提供了理论依据。
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| 关 键 词： | 鄂尔多斯盆地 晚古生代 地层倾角测井 古河流 |
| 收稿时间： | 1992-09-07 |
| 修稿时间： | 1992-09-07; |
STUDY ON THE CHARACTERISTICS OF PALAEOCURRENTS BY USING DIPMETER LOGGING DATA |
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| Liu Wenbin, Chen Yingtai,Wang Duoyun.STUDY ON THE CHARACTERISTICS OF PALAEOCURRENTS BY USING DIPMETER LOGGING DATA[J].Chinese Journal of Geology,1994,29(3):291-297. |
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| Authors: | Liu Wenbin Chen Yingtai Wang Duoyun |
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| Institution: | 1. Lanzhou Institute of Ceology, Chinese Academy of Science, Lonzhou 730000;2. Petroleum Exploration and Exploitation Institute of Changqing, Qingyang 745101 |
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| Abstract: | Carboniferous and Permian sand bodies in Erdos Basin are the chief reservoir for the exploration and ex,lloitation of natural gas. The present paper interprets the dipmeter logging data of three wells and uses them to study the characteristics of palaeocurrents. It is revealed by detailed study that the flow direction of palaeocurrents is not the dip-orientation of the gentle dipping sand bodies obtained from the dipmeter logging out perpendicular to it. This result has solved the problem of how to explain the flow direction of palaeocurrents according to the dipmeter logging data.Calculated results based on the parameters of palaeocurrents indicate that the rivers were braided-meandering ones during the Shihezi to Shanxi period, and were low-sinuosity meandering rivers during the Taiyuan period. The width of sand bodies ranges from 300 to 900m with an average value of 496m. All these are testified by practical sampling in the Zhenchuanbao gas field.This study provides reliable geologic basis for the exploration and exploitation of natural gas in sand bodi' s. |
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| Keywords: | Erdos Basin Late Paleozoic Dipmeter log Palaeocurrent |
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