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    • 5. 发明申请
    • ESTIMATING PETROPHYSICAL PARAMETERS AND INVASION PROFILE USING JOINT INDUCTION AND PRESSURE DATA INVERSION APPROACH
    • 利用联合感应和压力数据反演方法估算物理参数和侵入剖面
    • WO2010083388A3
    • 2010-11-04
    • PCT/US2010021161
    • 2010-01-15
    • SCHLUMBERGER SERVICES PETROLSCHLUMBERGER CA LTDSCHLUMBERGER HOLDINGSSCHLUMBERGER TECHNOLOGY BVPRAD RES & DEV LTDLIANG LINABUBAKAR ARIAHABASHY TAREKTHAMBYNAYAGAM MICHAEL
    • LIANG LINABUBAKAR ARIAHABASHY TAREKTHAMBYNAYAGAM MICHAEL
    • G01V3/26E21B47/00G01V3/18
    • G01V3/38G01N15/088G01V3/28Y02A90/344
    • Methods and related systems are described relating to an inversion approach for interpreting the geophysical electromagnetic data. The inversion can be constrained by using a multiphase fluid flow simulator (incorporating pressure data if available) which simulates the fluid flow process and calculates the spatial distribution of the water saturation and the salt concentration, which are in turn transformed into the formation conductivity using a resistivity-saturation formula. In this way, the inverted invasion profile is consistent with the fluid flow physics and moreover accounts for gravity segregation effects. Jointly with the pressure data, the inversion estimates a parametric one-dimensional distribution of permeability and porosity. The fluid flow volume is directly inverted from the fluid-flow-constrained inversion of the electromagnetic data. The approach is not limited by the traditional interpretation of the formation test, which is based on a single-phase model without taking into account invasion or assuming that the fluid, for example mud-filtrate, has been cleaned up from the formation testing zone. The joint inversion of the electromagnetic and pressure data provides for a more reliable interpretation of formation permeability. One advantage of the approaches described herein, is its possible generalization to three-dimensional geometries, for example dipping beds and highly deviated wells.
    • 描述了用于解释地球物理电磁数据的反演方法的方法和相关系统。 通过使用模拟流体流动过程并计算水饱和度和盐浓度的空间分布的多相流体流动模拟器(合并压力数据,如果可用),可以约束反演,然后使用a转换成地层电导率 电阻率 - 饱和度公式。 这样,反演的侵入剖面与流体流动物理学一致,并且考虑了重力偏析效应。 与压力数据联合,反演估计渗透率和孔隙度的参数一维分布。 流体流量由电磁数据的流体流动约束反转直接反转。 该方法不受地层测试的传统解释的限制,其基于单相模型而没有考虑入侵或假设已经从地层测试区域清除了流体,例如泥浆滤液。 电磁和压力数据的联合反演提供了地层渗透率更可靠的解释。 本文描述的方法的一个优点是其可能推广到三维几何形状,例如浸渍床和高度偏斜的井。