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Landing Nipple and Lock Mandrel

Landing nipples are downhole components, fabricated as a short section of heavy wall tubular with a machined internal surface that provides a seal area and a locking profile. The Landing Nipples are included in most completions at a pre-determined intervals to enable the installation of flow-control devices, such as Blanking Plug and Equalizing Check Valve.


Three basic types of Landing Nipples are commonly used: No-Go Nipples, Selective-Landing Nipples and Ported Safety Valve Nipples. The Landing Nipples have the same Packing Bore ID for a particular tubing size and weight. ‘LNX’ and ‘LNXN’ Landing Nipples are designed for use with standard weight tubing. ‘LNR’ and ‘LNRN’ Landing Nipples are for heavy weight tubing. The ‘N’ designation is for No-Go Nipples.


The completion can have as many LNX and LNR selective nipples with the same ID in any sequence as desired on the tubing string. This versatility result  in an unlimited number of positions for setting and locking subsurface flow controls. The flow control, which is attached to the required lock mandrel, is run in the well via the selective running tool on the slickline.



Features and Benefits


  Large bore for minimum restriction

  Universal nipple with one internal profile

  Lock mandrel locks design to holds pressure from above and below

  Extra large ID for high flow rate

  Simple operation

  Versatility helps reduce completion and production maintenance costs

  Multiple options when running, setting, or retrieving subsurface flow controls

  Field proven

  Versatility helps reduce completion and production maintenance costs


Applications


  Gauge hangers for bottom hole pressure/temperature surveys

  Almost unlimited locations for setting and locking subsurface flow controls

  Lock Mandrel with plugs holds pressure from above and below

  Setting packers

  Killing the well

  Removing the wellhead


Technical Data


 

  Other profile and packing bore size available depending upon tubing size selected and request




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