Method of thermal-mine recovery of oil and fluent bitumens
    1.
    发明授权
    Method of thermal-mine recovery of oil and fluent bitumens 失效
    石油和流质沥青的热采矿回收方法

    公开(公告)号:US4227743A

    公开(公告)日:1980-10-14

    申请号:US943558

    申请日:1978-09-15

    摘要: The method of thermal-mine recovery of oil and fluent bitumens or kerogens includes providing a system of mine workings above an oil-bearing formation and drilling from these workings and from the ground surface a series of injection wells into the oil-bearing formation. An operation gallery is provided within the oil-bearing formation, from which a system of horizontal and inclined recovery wells is drilled. Then a heat carrier is positively injected into the oil-bearing formation to heat it to a temperature whereat the oil attains the required fluidity within the formation. Then a fluid is charged into the formation to force the oil from the oil-bearing formation into the horizontal and inclined recovery wells, toward the operation gallery, from which the oil is directed to the ground surface. The improvement of the method resides in that the heat carrier is injected into the formation through the horizontal and inclined recovery wells extending substantially across the predominant direction of the highly permeable zones of the oil-bearing formation, and, following the heating of the formation to the abovesaid temperature, the injection of the heat carrier is terminated, and the fluid is charged into the injection wells having minimized association with the highly permeable zones of the oil-bearing formation, to force the oil from the oil-bearing formation through the recovery wells toward the recovery gallery.

    摘要翻译: 对油和流平沥青或油母质进行热矿回收的方法包括提供在含油地层上方的矿井作业系统,并从这些工作中从地表和一系列注入井进入含油地层。 在含油地层内设有一个操作廊,钻出一个水平和倾斜回收井的系统。 然后将热载体正确地注入到含油地层中以将其加热至油在地层内达到所需的流动性的温度。 然后,将流体装入地层,以迫使来自含油地层的油进入水平和倾斜的回收井,朝向操作廊,油从该储存空间导向地表。 该方法的改进在于,通过基本上跨越含油地层的高渗透区域的主要方向延伸的水平和倾斜回收井将热载体注入地层,并且在将地层加热到 在上述温度下,终止热载体的注入,并且将流体装入与含油地层的高渗透区域最小化的注入井中,以迫使来自含油地层的油通过回收 井朝向恢复画廊。