They encompass a wide range from geology, geophysics and engineering to operations, support and logistics, safety and regulatory compliance, management and administration. Project teams are often part of alliances that include:
* The oil or gas company (also known as the operating company or operator), along with any joint venture partners having an interest in the well;
* An outside drilling contractor who provides the drilling rig and the personnel to run it; and
* One or more service companies that provide specialized equipment and expertise at various stages of the project. The largest of these service companies may offer integrated project management services that include contract drilling.