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首页> 外国专利> METHOD FOR DETERMINING BY NUMERICAL SIMULATION THE CONDITIONS OF RESTORATION BY FLUIDS OF A DEPOSIT OF A COMPLEX WELL DAMAGED BY DRILLING OPERATIONS

METHOD FOR DETERMINING BY NUMERICAL SIMULATION THE CONDITIONS OF RESTORATION BY FLUIDS OF A DEPOSIT OF A COMPLEX WELL DAMAGED BY DRILLING OPERATIONS

机译：用数值模拟确定钻井作业损害的复杂井道流体恢复条件的方法

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摘要

P - Method for determining by numerical simulation the optimal conditions to impose in a horizontal (or complex) well drilled through an underground deposit to gradually eliminate (restore) by the fluids from the deposit, deposits or cakes which are formed in at least one zone at the periphery of the well, following drilling and completion operations. - The method essentially involves the acquisition of initial data obtained by laboratory measurements of the values, according to the initial permeability (ki) of the formations surrounding the well, the thickness of the cakes as well as the damaged permeability values (kd) and restored permeability (kf) of this zone, as a function of the distance (r) to the wall of the well, the discretization of the zone damaged by a cylindrical mesh in 3D forming blocks of small radial thicknesses relative to the diameter of the well, and the resolution in this mesh of the diffusivity equation modeling the flows of fluids through cakes taking into account the initial data measured and by modeling the evolution of the permeability as a function of the flow rates (Q) of fluids flowing at through cakes, to deduce the optimal conditions to apply for the production of the well. - Applications to the production of hydrocarbon deposits, for example in deep offshore in poorly consolidated formations (Gulf of Mexico, Angola, etc.). /P
机译：

-通过数值模拟确定施加在穿过地下沉积物的水平（或复杂）井中以逐渐消除（恢复）沉积物中的流体，沉积物或饼中形成的流体的最佳条件的方法钻井和完井作业之后，井外围的一个区域。 -该方法本质上涉及根据井周围地层的初始渗透率（ki），滤饼厚度以及受损的渗透率值（kd）并通过实验室测量值获取初始数据该区域的渗透率（kf），作为到井壁的距离（r）的函数，该区域的离散化在3D形成的小块径向厚度相对于井径的块中被圆柱网格损坏，并通过该网格的扩散方程的分辨率，对通过滤饼的流体流动进行建模，其中要考虑到所测得的初始数据，并通过对渗透率随滤饼中流动的流体流量（Q）的函数进行建模来建模，从而推论出适用于油井生产的最佳条件。 -应用于碳氢化合物沉积的生产，例如在深海近海中固结不良的地层（墨西哥湾，安哥拉等）。

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