水密度修正法在注水井折算地层压力中的应用

利用液面深度和水井井口压力资料折算油层中部压力具有简单、方便、经济的优点,但相对误差较大。矿场实践发现,对水的密度进行合理温度修正,可有效提高折算压力解释精度。介绍了水密度随温度变化的原理,以及应用密度-温度变化关系式计算油层中部压力的方法。该方法在水井压力解释中取得较好效果。

Application of Water Density Correction Method to Converse Formation Pressure in Water Injection Well

Using fluid depth and wellhead pressure data of water well to converse mid layer pressure has the advantages of being simple,convenient,and economical,but whose relative error is much larger.It is found by field practice that reasonable temperature correction to the density of water can effectively improve the interpretation accuracy of reduced pressure.Principle of the water density variation with temperature,and method of applying density-temperature variation relationship to calculate the central reservoir pressure are introduced.The method achieves a good result in pressure interpretation of the water well.