| 利用全方位P波属性进行裂缝检测的地震方法 |
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| 引用本文： | 曲寿利,季玉新,王鑫,王秀玲,陈新荣,慎国强.利用全方位P波属性进行裂缝检测的地震方法[J].应用地球物理,2007,4(3):238-243. |
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| 作者姓名： | 曲寿利 季玉新 王鑫 王秀玲 陈新荣 慎国强 |
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| 作者单位： | 胜利石油管理局计算中心，胜利石油管理局计算中心，胜利石油管理局计算中心，胜利石油管理局计算中心，胜利石油管理局计算中心，胜利石油管理局计算中心 |
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| 摘 要： | 胜利油田存在着一种特殊的裂隙性油气藏,即泥岩裂隙油气藏。由于该类裂隙储层的孔隙度很小,岩石物性参数变化不灵敏,并表现出很强的各向异性,因此,其勘探难度很大。到目前为止,国内外还没有一套成熟的地质、物探、测井及钻井等资料综合分析的裂隙方位、分布、密度的识别方法。本文在研究国外裂缝检测方法的基础上,提出了波阻抗随方位变化(IPVA)的新方法,结合罗家地区的泥岩裂隙地震地质特征,研究了利用多方位 P 波资料检测定向垂直裂缝的地震采集、处理和识别方法,对不同共中心点 CMP 位置的全方位 P 波资料在速度随方位变化(VVA)及振幅随方位角变化(RVA)研究的基础上,进行波阻抗随方位变化(IPVA)的研究,用于识别裂缝的分布、走向及密度。经罗家地区实际资料的应用,见到了初步的效果,证明该方法是潜力较大的高角度裂隙的定量检测方法。
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| 关 键 词： | 泥岩裂隙 速度 振幅 波阻抗 P波 全方位 |
| 收稿时间： | 19 April 2004 |
Fracture detection by using full azimuth P wave attributes |
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| Qu Shouli,Ji Yuxin,Wang Xin,Wang Xiuling,Chen Xinrong,Shen Guoqiang.Fracture detection by using full azimuth P wave attributes[J].Applied Geophysics,2007,4(3):238-243. |
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| Authors: | Qu Shouli Ji Yuxin Wang Xin Wang Xiuling Chen Xinrong Shen Guoqiang |
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| Institution: | (1) Computer Center, Shengli Petroleum Administration Bureau, SINOPEC, Dongying, 257100, China |
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| Abstract: | A type of specific fractured hydrocarbon reservoir, a shale fractured reservoir, exists in the Shengli oilfield. Due to very small porosity of this type, low sensitivity to the variation of petrochemical property parameters, and strong anisotropy, it is very difficult to explore for them. So far, there is no set of mature methods for recognition of direction, distribution, and density of the fractures by an integrated analysis of geologic, geophysical, well log, drilling data, and etc. This paper presents a new method for acoustic impedance variation with azimuth (IPVA), based on existing fracture detection methods. Seismic acquisition, processing, and recognition techniques were developed for detecting directional vertical fractures using multi-azimuth P wave data in combination with the seismic and geological features of shale fractures in the Luojia area. The IPVA research is carried out for recognizing the distribution, strike, and density of fractures based on the study of velocity variation with azimuth (VVA) and amplitude variation with azimuth (AVA) for full azimuth P wave data at different CMP positions. Through practical application in the Luojia area, primary results have been obtained which verifies that the IPVA method provides good potential for quantitative detection of parallel, high angle, shale fractures. |
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| Keywords: | Shale fractures velocity amplitude acoustic impedance P wave full azimuth |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
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