公开(公告)号：WO2014110681A1

公开(公告)日：2014-07-24

申请号：PCT/CA2014/050032

申请日：2014-01-17

Applicant: INNOVATIVE OILFIELD CONSULTANTS LTD.

Inventor： DOWNING, Donald

IPC: F04B53/10 ,  E21B34/12 ,  E21B43/12 ,  F04B47/02 ,  F16K3/24

CPC classification number: E21B43/126 ,  E21B34/08 ,  E21B34/12 ,  E21B43/127 ,  E21B2034/007 ,  F04B19/22 ,  F04B47/00 ,  F04B47/02 ,  F04B53/12 ,  F04B53/14

Abstract: Method and apparatus overcoming gas-lock in reciprocating downhole pumps. On the downstroke of a plunger in a barrel, gassy fluid is compressed in the pump chamber between standing and travelling valves. Downhole plunger movement drags a sleeve over a mandrel for opening a chamber valve to a staging chamber located at a downhole end of the travelling valve for receiving at least a portion of the compressed and gassy fluid therein. On the upstroke, the chamber valve is dragged closed for sealably retaining the compressed gassy fluid therein while drawing an additional increment of fluid through the standing valve into the pump chamber. Continued downstroke and upstroke cycles increases pressure of the compressed gassy fluid in the pump chamber until it exceeds the hydrostatic head above the travelling valve for resumption of normal fluid pumping.

Abstract translation: 在往复式井下泵中克服气锁的方法和设备。 在桶中的柱塞的下行程中，高压流体在泵室中在驻阀和行进阀之间被压缩。 井筒柱塞运动将套管牵引在心轴上，用于将室阀打开到位于行进阀的井下端的分级室，用于在其中容纳压缩和膨胀流体的至少一部分。 在上行程中，室阀被拉动关闭以将压缩的流体密封地保持在其中，同时将额外的增量的流体通过立式阀进入泵室。 继续下行和上行循环增加了泵室中的压缩流体的压力，直到其超过行进阀上方的静水压头以恢复正常的流体泵送。