| 校正注水井井口液面下降试井解释模型 |
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| 引用本文： | 刘道杰,王百,惠艳妮,刘志斌.校正注水井井口液面下降试井解释模型[J].油气井测试,2011,20(2):8-12. |
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| 作者姓名： | 刘道杰 王百 惠艳妮 刘志斌 |
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| 作者单位： | 1. 西南石油大学研究生部,四川成都,610500
2. 长庆油田油气工艺研究院,陕西西安,710018 |
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| 基金项目： | 高校博士点专项科研基金 |
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| 摘 要： | 注水井井口液面下降试井的压力实测曲线常出现"硬拐"或"直角状",使得导数曲线出现下掉的"V"式或"W"式弯曲。利用常规试井解释模型分析注水井井口液面下降的压降资料往往产生较大偏差。基于注水井井口液面下降机理及无限大均质三区径向复合油藏物理模型,假设关井后仍有假想流体注入井筒使得井筒液面不下降,建立校正注水井井口液面下降的试井解释模型。由井底压力空间解绘制的压力导数曲线可以看出,水平径向流直线段将会出现在导数曲线"V"式或"W"式弯曲左边开始的地方,说明该模型可用于校正注水井井口液面下降深度和时间的影响。实例证明,建立的试井解释模型计算平均地层压力较常规试井解释模型具有较高的精度。
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| 关 键 词： | 注水井 井口液面 试井解释模型 压力导数 |
Well Test Interpretation Model With Proofreading Wellhead Pressure Falloff Due to Liquid Level Drawdown in Injection Wells |
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| Liu Daojie,Wang Bai,Hui Yanni,Liu Zhibin.Well Test Interpretation Model With Proofreading Wellhead Pressure Falloff Due to Liquid Level Drawdown in Injection Wells[J].Well Testing,2011,20(2):8-12. |
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| Authors: | Liu Daojie Wang Bai Hui Yanni Liu Zhibin |
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| Affiliation: | Liu Daojie,Liu Zhibin(Postgraduate Dept.of South-West Petroleum University),Wang Bai,Hui Yanni(Petroleum and Gas Technique Research Institute,Changqing Oilfield) |
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| Abstract: | Very often,wellhead pressure falloff curve,due to liquid drawdown in injection wells,turns vertically and so looks like a right-angle,which makes pressure derivative curve bending like letter V or W.Serious error is often brought from analysis of wellhead pressure falloff due to liquid level drawdown in injection wells with conventional well test interpretation software.Based on the mechanism of liquid level drawdown in injection wells and physical model of infinite,homogeneous and three-district radial com... |
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| Keywords: | injection well liquid level drawdown well testing interpretation model pressure derivative |
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