| 低速非达西渗流条件下水平气井产能预测公式 |
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| 引用本文： | 刘萍,杨辉华.低速非达西渗流条件下水平气井产能预测公式[J].油气井测试,2008,17(6):19-20. |
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| 作者姓名： | 刘萍 杨辉华 |
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| 作者单位： | 1. 西南油气分公司工程技术研究院,四川德阳,618000
2. 石油工程西南有限公司井下作业分公司,四川德阳,618000 |
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| 摘 要： | 目前,多采用常规的产能公式对低渗气井进行产能预测,对于水平井一般忽略启动压力梯度,导致了预测结果与生产实际存在较大的误差。通过对低渗气藏渗流机理分析研究,在直井考虑启动压力梯度产能公式基础上,利用保角变换关系,推导出适合于低渗气藏水平井产能预测公式。通过实例计算进行分析认为,低渗气藏水平井产能预测中必须考虑启动压力梯度的影响。
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| 关 键 词： | 低渗透气藏 启动压力梯度 水平井 产能预测 |
The Formula about Productivity Forecast at the Condition of Low Velocity Non-Darcy Percolation |
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| Liu Ping,Yang Huihua.The Formula about Productivity Forecast at the Condition of Low Velocity Non-Darcy Percolation[J].Well Testing,2008,17(6):19-20. |
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| Authors: | Liu Ping Yang Huihua |
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| Affiliation: | Liu Ping(Engineering Technology Institute,South-West Petroleum Branch Company),Yang Huihua(Down Hole Operation Branch Company,Petroleum Engineering South-West Branch Company) |
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| Abstract: | At present,traditional productivity formulation is usually used to forecast productivity in low permeability gas well,and to horizontal well,starting pressure gradient is always neglected that leads to error between forecast and actual production.By studying on percolation mechanism in low permeability gas reservoir,and basing on productivity formula with thinking of starting pressure gradient in straight well,using conformal transformation relation,productivity forecast formula is gotten which is fit for h... |
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| Keywords: | low permeability gas reservoir starting pressure gradient horizontal well productivity forecast |
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