TAML 1 completion level

Technology description:

Sidetracking from open hole section using a bore thru whipstock. Both boreholes are cased with guaranteed access to the lateral.


  • Stable carbonate rocks where sidetracking without whipstock can be challenging;
  • Fishbone-type multilateral wells

Special features of TAML 1 system:

  • Open Hole sidetracking with bi- or tri-mill assembly;
  • The total amount of trips to deploy the system – 3;
  • Wash thru capability during RIH;
  • High precision orientation without involving MWD service (remote orienting sub, max 3 deg inaccuracy);
  • Big bore thru whipstock design – 3,6’’ for 7’’ csg. Doesn’t require retrieving after milling operations;
  • The system is applicable to RIH with inner string (washpipes).