三维绕障定向井设计方法

随着油气田加密井的不断增加，加密定向井的设计变得越来越困难。为此，针对密井网的特点，通过对密井网障碍井空间位置和空间形态的描述，经过坐标转换，建立了适合于密井网三维绕障定向井设计的双图设计法设计模型。该方法的特点是将垂直剖面图和障碍水平投影图联合使用，分别研究出障碍物的区间和可行域范围。同时充分考虑了障碍物的数量、形状及位置，可绕多障、复杂形状的井，具有一定的通用性。根据以上方法，应用Delphi语言和OpenGL编写了软件，对绕障定向井进行了实际计算，设计效果良好。

DESIGN METHOD ON 3D BYPASS DIRECTIONAL WELL

With the increase on drilling density of oil and gas fields, it becomes more and more difficult to design infill directional wells. So, in view of the characteristics of dense well pattern, the bigraph design model applicable to 3D bypass directional wells in dense well pattern is established by describing the position and shape of barrier well in dense well pattern after transforming coordinate. The feature of this method is that it can calculate the barrier section and its design feasible range respectively with the integrated use of vertical profile and ground plan of barrier. Since the quantity, shape and position of barrier are taken into full consideration at the same time, it is also applicable to wells under the condition of multiple barriers with complicated shapes. Based on the method mentioned above, the software is programmed by Delphi and OpenGL to calculate the bypass directional well practically with good effect.