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根据异常高压气井测试特点,建立了一套预测气井井筒压力、温度耦合模型,利用LapLace变换详细推导获得了瞬变流动井筒压力、温度耦合模型在各种情况下的拉氏空间通解,运用Stehfest数值反演技术得到井底压力及温度实空间解。并运用VC++6.0语言,研制了异常高压气井井口压力资料处理软件。该软件已经在新疆、四川等油气田投入使用。矿场使用情况表明:文中提出的理论和方法切实可行,解决了由于温度引起的异常高压特高产气井井口压力动态异常问题,因而,具有重要的理论研究和实际应用价值。
Based on the characteristics of abnormal high pressure gas well testing, a set of coupled pressure and temperature models for wellbore gas well prediction were established. The Laplace transform was used to derive the Lagrange space general solution of transient wellbore pressure and temperature coupled model under various conditions. The Stehfest values Inversion technique gives bottomhole pressure and temperature real space solution. And using VC ++ 6.0 language, developed abnormal pressure gas wellhead pressure data processing software. The software has been put into use in Xinjiang, Sichuan and other oil and gas fields. The use of the mine shows that the theory and method proposed in this paper are practical and can solve the dynamic pressure anomalies in the wellhead pressure of abnormally high pressure gas production well due to temperature. Therefore, it has important theoretical research and practical application value.