变渗油藏试井理论与应用研究

【作者】 郭志英；

【导师】 黄炳光；

【作者基本信息】 西南石油学院 ， 油气田开发工程， 2003， 硕士

【摘要】 本文从非均质油藏油井试井分析理论的建立以及非均质油藏油井试井资料的解释方法等方面入手，进行了详细的理论推导和实际应用分析方面的研究。 首先建立了新的非均质油藏的试井分析数学模型——分为在考虑表皮S和井筒储集效应C下的平面非均质油藏油井的试井分析数学模型、径向非均质油藏油井的试井分析数学模型，使非均质油藏油井的试井分析方法向前推进了一步。然后对径向非均质油藏的试井分析数学模型的解析解、近似解、压力导数解进行了讨论，对其仅适用于压降的范围进行了拓展，确定了压降以及压力恢复的压力导数解。接着建立了一套新的非均质油藏试井分析理论，为非均质油藏油井测压资料的解释提供了新的解释手段——不依赖径向流直线特征的试井分析方法，用以分析渗透率随井距连续、任意变化的非均质油藏的压力数据，从而得到地层的渗透率及其分布规律、压力分布规律、平均地层压力等。 运用本文提出的非均质油藏试井理论模型，模拟出了径向非均质油藏试井的压降、压恢数据；通过采用本文的试井资料解释方法，计算出的地层渗透率分布规律与最初给定的地层渗透率分布规律基本吻合。这样证明了本文的非均质油藏试井理论模型和基于油井试井分析理论上的试井资料解释方法的正确性与可靠性。更多还原

【Abstract】 In this thesis, particular theory deduction and practical application analysis are studied from the following aspects: the establish of hetrogeneous reservoir well test analysis theory and the interpretaion method of hetrogeneous reservoir well test data.First, new well test analysis mathematic models for complanate and radialhetrogeneous reservoir is established from two hands--whether consideringskin effect and effect of wellbore storage or not. In the same time, the well test analysis method for hetrogeneous reservoir well is advanced. Then, the analytical solution > approximative solution and pressure differential solution for radial hetrogeneous reservoir well test analysis mathematic model are discussed, the application extention of the above solutions is magnified from pressure drawdown to pressure build-up, and the pressure differential solutions of pressure drawdown and pressure build-up are confirmed. A new set of hetrogeneous reservoir well test analysis theory is established, the theory provide new interpretaion measure for hetrogeneous reservoir well test pressure data, which don’t depend on radial flow linear segment. The measure is used to analyze the pressure data of hetrogeneous reservoir whose permeability is continuous and varies at random along with the radial distance, thereby, we can obtain the permeability of the reservoir, the distributing disciplination of permeability, the distributing disciplination of pressure and the average stratum pressure and etc..Using the new well test analysis mathematic models for radial hetrogeneous reservoir, the pressure drawdown and pressure build-up data are simulated. Using the measure which is put forward in this thesis, the permeability and its distributing disciplination can be calculated, which is accordant with the presented initial permeability and distributing disciplination.In this way, the example analysis proves the validity and reliability of the new well test analysis mathematic models for radial hetrogeneous reservoir and well test data interpretation meassure which bases on well test analysis theory.更多还原