| 二阶导数法识别压力导数曲线"上翘"的类型 |
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| 引用本文： | 孙庆友,张绍辉,尹洪军,周洪亮.二阶导数法识别压力导数曲线"上翘"的类型[J].科学技术与工程,2010,10(12). |
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| 作者姓名： | 孙庆友 张绍辉 尹洪军 周洪亮 |
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| 作者单位： | 1. 大庆油田有限责任公司第十采油厂,大庆,164415;大庆油田有限责任公司第十采油厂,大庆 164415
2. 大庆油田有限责任公司第十采油厂,大庆,164415 |
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| 基金项目： | 国家自然科学基金重点项目(50634020,50874023);;黑龙江省高等学校科技创新团队建设计划项目(2009TD08)资助 |
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| 摘 要： | 启动压力梯度和断层的存在都会使压力导数曲线发生上翘,对压力导数曲线上翘类型的识别,是正确选择试井解释模型的关键。分别给出了考虑启动压力梯度影响和断层影响的二阶导数计算理论基础,绘制了压力曲线、压力导数曲线以及二阶导数曲线,并对其特征进行了分析。提出了一种对启动压力梯度影响在压力导数曲线上引起的上翘和断层影响在压力导数曲线上引起的上翘进行识别的方法——二阶导数法。分析结果表明:二阶导数法简单易用,可以对两种不同情况引起的上翘进行有效的识别。
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| 关 键 词： | 数学模型 二阶导数法 启动压力梯度 断层 |
The Identification of the Type of "Upwarping" in the Pressure Derivative Curve by Using Second Pressure Derivative Method |
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| SUN Qing-you,ZHANG Shao-hui,YIN Hong-jun,ZHOU Hong-liang.The Identification of the Type of "Upwarping" in the Pressure Derivative Curve by Using Second Pressure Derivative Method[J].Science Technology and Engineering,2010,10(12). |
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| Authors: | SUN Qing-you ZHANG Shao-hui YIN Hong-jun ZHOU Hong-liang |
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| Institution: | Key Laboratory of Enhanced Oil and Gas Recovery in the Ministry of Education/a>;Daqing Petroleum Institute1/a>;Daqing 163318/a>;P.R.China/a>;No.10 Oil Production Company of Daqing Oil Field Company Ltd./a>;Daqing 164415/a>;P.R.China |
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| Abstract: | The pressure derivative curve will upwarp because of the existence of the threshold pressure gradient and the fault. The identification of the type of upwarping in the pressure derivative curve is crucial to the selection of the well testing model. The theoretical basis of computing the second pressure derivative curve considering effects of the threshold pressure gradient and the fault was provided respectively. The pressure curve, the pressure derivative curve and the second derivative curve are drawn and... |
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| Keywords: | mathematical model second pressure derivative method threshold pressure gradient fault |
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