异常高压气井水侵量计算新方法
New Methods for Abnormal High Pressure Gas Well Water Influx Calculation
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- 引用格式:
-
韩倩,段永刚,王海燕.异常高压气井水侵量计算新方法[J].天然气与石油,2013,31(6):0.doi:
.New Methods for Abnormal High Pressure Gas Well Water Influx Calculation[J].Natural Gas and Oil,2013,31(6):0.doi:
- DOI:
- 作者:
- 韩 倩1 段永刚2 王海燕1
- 作者单位:
- 1.中国石油化工股份有限公司华东分公司工程技术研究院，2.西南石油大学石油工程学院
- 关键词:
- 异常高压；气井；储量；水侵量；改进Roach曲线
Abnormal high pressure; Gas well; Geological reserve; Water influx; Improved Roach curve
- 摘要:
- 在异常高压气藏开采过程中，许多气井生产都会出现水侵现象，由此带来诸多不利影响。在整个气井的开发方案设计与调整中，有必要知道水侵量大小。直接采用常规Roach水侵量计算模型进行计算，涉及参数较多，所以在常规计算方法基础上，将气藏物质平衡方程与Pot模型相结合，引用累积有效压缩系数，提出了一种改进的Roach曲线新方法。经过实例计算分析，该方法所得结果与实际情况相符。应用改进的曲线计算方法简单直观，且计算结果准确。与传统方法相比，新方法在异常高压气井的水侵量计算方面，有较好的适应性和精确度，为此类气藏的有效开发提供了理论依据。
In abnormal high pressure gas reservoir exploitation and development, water invasion may occur often in many gas wells, which will bring about very adverse effect. It is very important to calculate the water influx during design and adjustment of gas reservoir development program. The traditional Roach water influx calculation model may involves a lot of parameters. Based on the traditional calculation model, an improved Roach curve is put forward, which combines the material balance equation with Pot model and quotes cumulative effective compressibility factor. Practical case calculation and analysis show that results obtained by this method are consistent with the actual situation. Therefore, this improved Roach curve method is convenient and intuitive and can obtain accurate results.
