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Repair/ Rechase/ Reface on API Spec 7-2 & 5CT Connections


Customers are able to send us their tools for repair, rechase, reface so that they can use multiple times.

All repaired connections by LEOS will be gauged to ensure optimal fit and conformance to customer's requirements and specifications.


Specialised Redress & Repair Service


  • Repair and redress stabilizers

  • Welding & grinding services on drilling tools

  • Dressing of tungsten carbide hard facing

  • Dressing of all types of mills

  • Repair of damaged and cracked related items


Note: LEOS also fabricates custom designed downhole equipment and tooling.


Skimming Down oversized OD /Bore ID


Customers are able to send us their tool/material to skim down oversized OD or bore ID to according to their requirement.


Calibration of Drifts


Apart from manufacturing various sizes of metal/nylon/ teflon drifts which complies to API Spec 5CT & 7-1,  LEOS also does calibration of drift of various sizes.


Servicing of IBOP, Drop in Check Valve, Lower Kelly Valves

LOR Engineering has vast experience in servicing valves from various brands such as Packard, Don Mashburn, WNCO, Global, Hydril​ with rotary connections as well as premium connections.

We have the capability to test valves from working pressure of 10,000 psi to 15,000 psi.

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