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    • 5. 发明申请
    • METHODS FOR MINIMIZING FLUID LOSS TO AND DETERMINING THE LOCATIONS OF LOST CIRCULATION ZONES
    • 最小化流体损失和确定损失循环带位置的方法
    • WO2010059511A2
    • 2010-05-27
    • PCT/US2009/064327
    • 2009-11-13
    • M-I L.L.C.DAKIN, Eugene
    • DAKIN, Eugene
    • E21B33/13E21B33/138
    • E21B21/003
    • A method for determining a location of a lost circulation zone in a wellbore having a first wellbore fluid therein that includes allowing loss of the first wellbore fluid to the lost circulation zone to stabilize; adding a volume of a second wellbore fluid having a density less than the first wellbore fluid to the wellbore on top of the first wellbore fluid to a predetermined wellbore depth; determining an average density of the combined first wellbore fluid and second wellbore fluid; mixing the first wellbore fluid and the second wellbore fluid together; pumping a volume of a third wellbore fluid having a density greater the average density of the combined first and second wellbore fluid into the wellbore bottom until fluid loss occurs; and determining the location of the lost circulation zone is disclosed.
    • 用于确定其中具有第一井筒流体的井筒中的漏失区域的位置的方法,所述方法包括允许第一井筒流体流失到所述漏失区域以稳定; 将一定体积的密度小于第一井筒流体的第二井筒流体添加到第一井筒流体顶部的井筒至预定的井筒深度; 确定组合的第一井筒流体和第二井筒流体的平均密度; 将第一井筒流体和第二井筒流体混合在一起; 将密度大于组合的第一和第二井筒流体的平均密度的一定体积的第三井筒流体泵入井筒底部,直到发生流体损失; 并公布了确定漏损区的位置。