BHA Components and Inspections

This article describes the specifications and inspection requirements of the various BHA components for horizontal wells.

Inspections requirements

  • All BHA components should have received a full…

Problems encountered in drilling extended reach and horizontal wells

The following table lists those problems commonly encountered in drilling extended reach (ERD) and horizontal wells and recommendd precautions.

Inefficient Hole Cleaning & Reduced Borehole…

Bit Selection and Hydraulics

The choice of bit should take into account the degree of re-active torque produced. For instance some PDC bits can make motor tool face control difficult resulting in erratic hole, increased torque…

Data Recording for Horizontal and ERD wells

Successful performance in horizontal drilling of wells requires the development of a comprehensive database of experience as optimum practice is often very area specific.

  • drilling parameters used,…

Kick-off and Initial Build Section

An initial kick-off and build section with smooth build rates is required to minimise torque and drag in deeper critical hole sections.

The Drilling Supervisor should ensure all personnel are aware of…