Sand control string for sectional high-pressure packing in pipe of horizontal well

Sand control string for sectional high-pressure packing in pipe of horizontal well

  • CN 104,695,914 A
  • Filed: 12/09/2013
  • Published: 06/10/2015
  • Est. Priority Date: 12/09/2013
  • Status: Active Grant
First Claim
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1. segmentation high-pressure packing sand-control tubing string in horizontal well tube, it is characterized in that, comprise suspension sub-releasing device, tube connector, the outer filling unit of high pressure, play pressure device, liquid stream conversion device, stratum-annular pack switching mechanism, bottom plug, described suspension sub-releasing device mainly comprises setting releasing gadget, described setting releasing gadget is arranged on outside tube connector upper end, described tube connector rear end connecting fluid stream conversion device, connection stratum-annular pack the switching mechanism of described liquid stream conversion device rear end, on described tube connector and liquid stream conversion device anterior position has been provided with pressure device, the outer filling unit air of described high pressure is enclosed within the tube connector be connected successively, play pressure device, liquid stream conversion device, the outside of stratum-annular pack switching mechanism also forms annular space each other, the outer filling unit front end outer side cover of described high pressure has front suspension packer, rearward end then arranges bottom plug, described liquid stream conversion is set up and arranges filling mouth in the high pressure that is communicated with tube connector, the outer filling unit of described high pressure is provided with corresponding with filling mouth in high pressure with the use of the outer filling mouth of high pressure.

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