| 井地电阻率法歧离率确定高阻油气藏边界 |
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| 引用本文： | 汤井田,张继锋,冯兵,林家勇,刘长生.井地电阻率法歧离率确定高阻油气藏边界[J].地球物理学报,2007,50(3):926-931. |
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| 作者姓名： | 汤井田 张继锋 冯兵 林家勇 刘长生 |
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| 作者单位： | 1.中南大学信息物理工程学院, 长沙410083 2 长安大学地质工程与测绘工程学院, 西安710054 3 云南省地质调查院物化探所, 云南宜良652100 |
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| 基金项目： | 国家自然科学基金项目(50099620-03-02)资助 |
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| 摘 要： | 根据油气藏的特征，抽象出地球物理模型，利用有限元软件FEPG对三维油气藏模型的稳恒电流场进行了数值模拟.根据井地电阻率法计算结果，定义了一种新的参数歧离率，分析了不同深度油气藏和油气藏偏离钻井位置时歧离率的变化规律，并利用该参数及其梯度确定油气藏边界范围.理论分析表明，参数歧离率可很好地突出油气藏异常并确定其横向边界范围.
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| 关 键 词： | 油气藏 井地电阻率法 FEPG 歧离率 数值模拟 横向边界 |
| 文章编号： | 0001-5733（2007）03-0926-06 |
| 收稿时间： | 2006-4-24 |
| 修稿时间： | 2006-04-24 |
Determination of borders for resistive oil and gas reservoirs by deviation rate using the hole-to-surface resistivity method |
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| TANG Jing-Tian,ZHANG Ji-Feng,Feng Bing,LIN Jia-Yong,LIU Chang-Sheng.Determination of borders for resistive oil and gas reservoirs by deviation rate using the hole-to-surface resistivity method[J].Chinese Journal of Geophysics,2007,50(3):926-931. |
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| Authors: | TANG Jing-Tian ZHANG Ji-Feng Feng Bing LIN Jia-Yong LIU Chang-Sheng |
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| Institution: | 1.School of Info physics and Geomatics Engineering, Central South University, Changsha 410083, China 2 College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China 3 Geophysics and Geochemistry Institute of Yunnan Geology Survey Academy, Yunnan Yiliang 652100, China |
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| Abstract: | According to characteristics of oil and gas reservoirs, the geophysical model is abstracted, and the 3-D steady current field of oil and gas reservoirs is simulated by the finite element software FEPG. Based on calculated results by the hole-to-surface resistivity method, a new parameter of the deviation rate is defined, and the law of deviation rate for oil and gas reservoirs of different depths deviated from the borehole is analyzed. Thus the range of the border for oil and gas reservoirs can be located through the parameter of the deviation rate and its gradient. Theoretic analysis indicates that abnormity of oil and gas reservoirs can be well stood out by the parameter of the deviation rate and the transverse border can be determined, and this is a practical and efficient method. |
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| Keywords: | Oil and gas reservoir Hole-to-surface resistivity method Finite Element Program Generator Deviation rate Numerical simulation Transverse border |
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