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    • 5. 发明公开
    • An injection apparatus and method
    • Injektionsvorrichtung und -verfahren
    • EP2128378A1
    • 2009-12-02
    • EP08157376.8
    • 2008-05-30
    • Services Pétroliers SchlumbergerSchlumberger Holdings LimitedSchlumberger Technology B.V.PRAD Research and Development N.V.
    • Rayssiguier, ChristopheShindgikar, Nikhil
    • E21B33/13E21B33/138E21B33/14
    • E21B27/02E21B23/006E21B33/13E21B33/14
    • An injection apparatus for injecting a chemical additive into a fluid mixture flowing into an annulus AN of a well-bore WB comprises a body 1 defining an internal chamber 20 receiving a valve arrangement 30. The body 1 comprises at least one port 14, 18 for coupling to a reservoir RS containing the chemical additive, and at least one injection nozzle 11 for injecting the chemical additive into the fluid mixture flowing into the annulus AN. The valve arrangement 30 has a closed position and an open position defined as a function of the fluid flow-rate of the fluid mixture flowing through the valve arrangement 30. In a closed position, the valve arrangement 30 closes the communication between the reservoir RS and the injection nozzle 11, the injection apparatus delivering a non-activated fluid mixture. In an open position, the valve arrangement 30 puts in communication the reservoir RS with the injection nozzle 11, the injection apparatus injecting the chemical additive into the fluid mixture flowing into the annulus AN.
    • 用于将流体混合物中注入化学添加剂的注入装置流入井眼WB的环形AN中,包括限定内部腔室20的主体1,其容纳阀装置30.主体1包括至少一个端口14,18,用于 耦合到包含化学添加剂的储存器RS,以及至少一个注入喷嘴11,用于将化学添加剂注入流入环形AN的流体混合物中。 阀装置30具有关闭位置和打开位置,其定义为流过阀装置30的流体混合物的流体流速的函数。在关闭位置,阀装置30关闭储存器RS和 注射喷嘴11,输送未活化流体混合物的注射装置。 在打开位置,阀装置30使储存器RS与注射喷嘴11连通,注射装置将化学添加剂注入流入环A的流体混合物中。