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研究了水平井开采物理模拟的相似准则,设计了油藏相似比例模型,建立了水平井开采油藏物理模拟系统.在该系统上进行了侧钻水平井开采的实验研究,分析了侧钻水平井开采曲线变化规律,比较了侧钻水平井与直井的开采效果,研究了侧钻水平井的侧钻时机、开采速度、水平段长度等对开采效果的影响.由于侧钻水平井开采时改变了油藏内渗流压力场和流体流动方向,能够开采死油区内的剩余油,提高了最终采收率.
The similarity criterion of horizontal well exploitation is studied, and the similarity scale model of reservoir is designed and the physical simulation system of horizontal well production is established.Experimental research on lateral well drilling is carried out in this system, Horizontal well mining curve changes, comparing the sidetrack horizontal well and vertical well mining effect, sidetrack horizontal well drilling time, mining speed, the length of the horizontal section of the mining effect.As a result of sidetrack horizontal well when mining change The seepage pressure field and fluid flow direction in the reservoir can recover remaining oil in the dead zone and improve the final recovery rate.