Sand-discharge oil production method and equipment

Sand-discharge oil production method and equipment

CN
  • CN 1,118,614 C
  • Filed: 06/13/2000
  • Issued: 08/20/2003
  • Est. Priority Date: 06/13/2000
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of sand-discharge oil production method, wellhead assembly by a band runner power fluid is sent in the well dynamic liquid pipe in the pit shaft and and then deliver to hydraulic jet pump in the pump barrel that is connected with well dynamic liquid pipe, make the jetting pump work, hydraulic jet pump by its tail pipe that connects down with the formation fluid sucking-off, and it is mixed back mixed liquor that forms upwards deliver to ground with power fluid, it is characterized in that, contain sand mixed liquor on send by the little down-hole mixed liquor pipe of the cross-sectional area in the pit shaft and finish, the mixed liquor that contains sand upwards flow to ground by wellhead assembly to be far longer than the shake out flow velocity of settling rate of oil reservoir, prevent the oil reservoir sedimentation of shaking out, tail pipe is fixed in the pit shaft by the tubing anchor of oil reservoir top, and an end in tail pipe drag-out hole is positioned at the oil reservoir bottom.

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