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    • 6. 发明授权
    • System and method for estimating formation supercharge pressure
    • 用于估计地层增压压力的系统和方法
    • US07647824B2
    • 2010-01-19
    • US11737223
    • 2007-04-19
    • Jianghui WuJaedong LeeMatthias Meister
    • Jianghui WuJaedong LeeMatthias Meister
    • E21B47/06G01V9/00
    • E21B47/06E21B49/087
    • A method of estimating a formation pressure in a wellbore is provided that in one aspect includes measuring a hydrostatic pressure at a selected location in the wellbore, and estimating supercharge pressure as a function of time using a forward model that utilizes the hydrostatic pressure and at least one property of mud in the wellbore that is a function of time. In another aspect, the method may estimate an initial formation pressure at a selected location in a wellbore by obtaining a hydrostatic pressure and at least three formation pressure measurements at three separate times at the selected location, and estimating the initial formation pressure using the hydrostatic pressure, the three pressure measurements and an internal mudcake parameter.
    • 提供了一种估计井筒中的地层压力的方法,其在一个方面包括测量在井筒中的选定位置处的静水压力,并且使用利用静水压力的至少一个正向模型估计作为时间的函数的增压压力,并且至少 井眼中泥土的一个属性是时间的函数。 在另一方面,该方法可以通过在所选择的位置处在三个不同时间获得静水压力和至少三次地层压力测量值来估计井筒中选定位置处的初始地层压力,并且使用流体静力压力估计初始地层压力 ,三个压力测量和一个内部泥饼参数。
    • 7. 发明申请
    • System and Method for Estimating Formation Supercharge Pressure
    • 用于估算地层增压压力的系统和方法
    • US20070256489A1
    • 2007-11-08
    • US11737223
    • 2007-04-19
    • Jianghui WuJaedong LeeMatthias Meister
    • Jianghui WuJaedong LeeMatthias Meister
    • E21B21/08
    • E21B47/06E21B49/087
    • A method of estimating a formation pressure in a wellbore is provided that in one aspect includes measuring a hydrostatic pressure at a selected location in the wellbore, and estimating supercharge pressure as a function of time using a forward model that utilizes the hydrostatic pressure and at least one property of mud in the wellbore that is a function of time. In another aspect, the method may estimate an initial formation pressure at a selected location in a wellbore by obtaining a hydrostatic pressure and at least three formation pressure measurements at three separate times at the selected location, and estimating the initial formation pressure using the hydrostatic pressure, the three pressure measurements and an internal mudcake parameter.
    • 提供了一种估计井筒中的地层压力的方法,其在一个方面包括测量在井筒中的选定位置处的静水压力,并且使用利用静水压力的至少一个正向模型估计作为时间的函数的增压压力,并且至少 井眼中泥土的一个属性是时间的函数。 在另一方面,该方法可以通过在所选择的位置处在三个不同时间获得静水压力和至少三次地层压力测量值来估计井筒中选定位置处的初始地层压力,并且使用流体静力压力估计初始地层压力 ,三个压力测量和一个内部泥饼参数。