多分支井电模拟实验自动化研究

RESEARCH ON THE AUTOMATION OF THE ELECTRIC ANALOGUE EXPERIMENT OF MULTI-BRANCH WELLS

目前的电模拟实验装置操作费时费力,且不能准确研究井模型在三维的电势分布。为此,基于水电相似原理,用VB程序控制机器人实现对探针准确、有规律定位,自动读取和存储所测点的时间和对应的电压值,实现了电模拟实验自动化,并把实验装置用于多分支井电模拟实验研究。研究多分支井模型在1个二维平面的电势分布规律,得出分支数、分支角度和分支长度对分支井产能的影响规律。把这个方法应用于研究井模型在空间不同位置的电势分布,测量1个二分支井模型在3个相互平行的平面上的电势,找出它在空间的分布规律,即分支井在近井空间内的等势面与井的形状相似并呈弧面向外凸起。该方法可用于研究多分支井在空间任意点的电势分布,弥补了电模拟实验装置在三维测量上的不足,为后续研究复杂结构井模型三维电势分布规律奠定了基础。

In the light of the problems of time/power cost in the device operation and difficulty to accurately study 3 D electric potential distribution of well model for the current electric analogue experiment, based on the principle of the hydroelectricity similarity, the accurate and regular positioning of the needle probe is achieved with the help of the robot controlled by VB program ; at the same time, the time and corresponding electric voltage of the tested points can be automatically read and stored, so the automation of the experiment can be realized and moreover the experimental device can be applied in the researches of the electric analogue of multi-branch well. Through the studies of 2D electric potential distribution laws for the multi-branch well model, the influencing laws of the branch number, branch angle and its length on the productivity of the branched well can be obtained. The method is ap-plied in the researches of the potential distribution ol the well model on the dlnerent spacmi locations and mree ra- ter-parallel planar electric potentials are tested for a dual-branch well model, finally the distribution laws are found out in the space i. e. There is similarity between the equipotential surface of the multi-branch well the the surface near the wellbore and the shapes of the well and furthermore the well is cambered outwards in the shape of convex. The method can be applied in the studies of the electric potential distribution of the multi-branch well in the arbi- trary point of the space, provides the foundation for the productivity prediction of the multi-branch well, so the shortage of 3 D measurement in the electric analogue experiment device can be compensated, thus the basement has been laid for the future researches on 3D electric potential distribution laws for the complex structural well model.