Sidetracking Guidelines

Wells may require sidetracking in order to re-drill the well to a new target, sidetrack past a fish or sidetrack due to hole problems.

The main requirements in sidetracking a well is the development…

Sidetracking out of Casing with Whipstock

The ‘Window Master’ whipstock is a one trip system to mill afull size hole in casing in the required direction. The whipstock is mechanically set and requires a bridge plug to be set at a suitable…

Abandonment and sidetrack drilling programme

Abandonment and sidetrack drilling programme

1. Programme Summary

Abandonment

This programme will prepare the existing well for a forthcoming horizontal side-track which is due to begin immediately upon the successful completion of the…

General Guidelines for Sidetracking

The main requirement in sidetracking a well is the development of a lateral force to allow the bit to cut on the side of the hole.

BHA Geometry

The required lateral force shall be provided by the…

Whipstock Milling Operation - Best Practices

Whipstock Milling Operation - Best Practices

  • Ensure that a drill pipe strainer is ALWAYS in the pipe when pumping fluids into the well
  • Ensure 4 x ditch magnets are in place for extracting milled cuttings.
  • Prepare sweeps prior to milling…