Contracting strategy for exploration drilling material

Contracting strategy for exploration drilling material

Contracting strategy guidelines for key drilling material to be used for exploration and new venture drilling operations (casing, wellhead, bits, mud cement, liner hanger, fuel)
1 Wellhead
General
Standardisation is very important. Wellheads can be passed from one company to another with relatively minor refurbishing of the larger parts.

Wells with conventional casing schemes should have 10,000 psi wellheads and be H 2S resistant, unless it is known that higher pressures will be encountered. 9 5/8" and 7" casing hangers should be ordered with premium threads so that they are universally . . .