Preliminary well design and planning

To prepare Preliminary Well Design for determining:

Surface well location

Target coordinates

Casing design and preliminary casing program including casing setting depths, casing size, casing weight, casing connections and casing steel grade.

Recommended “long-lead” tangible items.

Optimum Well Trajectory

Drilling Fluid type and density for each hole section, including drilling fluid contingency plans for loss of circulation, well kicks, hydrogen sulfide.

Cement slurry type, density and placement method.

Organise and facilitate Design Risk Assessment.

Prepare AFE well duration and cost estimate.

Produce and issue Summary Drilling Programme.

Drilling rig audits visual inspection of drilling units and audit of drilling contractor certification and management systems.