How to Become an OIM / Rig Manager

What an OIM / Rig Manager Does

The Offshore Installation Manager (OIM) — or rig manager, the equivalent onshore title — holds the top operational authority on the entire installation, not just the drilling operation. Where a toolpusher is accountable for the rig's drilling performance on behalf of the contractor, the OIM is accountable for everything happening on that platform or pad: drilling, production if present, marine operations on a floating rig, catering and accommodation, emergency response, and the safety of every person aboard regardless of which company employs them.

In an emergency — a well control event, a fire, a medical evacuation, severe weather offshore — the OIM is the designated person in command, full stop. That single point of command is a regulatory requirement on most offshore installations, not just an organizational convenience.

Offshore vs. Onshore: OIM vs. Rig Manager

The title and the scope split by environment. OIM is the offshore title, carrying statutory emergency-command responsibility defined by the regulator in that jurisdiction (e.g. the UK's Offshore Installations regulations or equivalent). Rig manager is the onshore equivalent — same top-of-rig operational authority, without the offshore-specific marine and evacuation-command requirements, since onshore emergency response typically hands off to local services rather than the rig's own command structure.

The Path From Toolpusher

Certification and Regulatory Requirements

The well control certification requirement is the same tier as toolpusher — IWCF Level 4 / IADC WellSharp Supervisor — since an OIM has to be able to approve and oversee well control decisions, same as a toolpusher does. OIM roles specifically add jurisdiction-specific command and emergency-response training on top of that (offshore safety regulators typically mandate a dedicated OIM or "Controller of Emergencies" qualification). See the certification ladder at Rig Floor Leadership and the full breakdown on certifications.

What This Role Is Not

An OIM or rig manager is not the same as a company man. The company man works for the operator (the oil company funding the well) and holds final say over the well program itself — what gets drilled, to what depth, with what casing design. The OIM works for the drilling contractor or installation owner and commands the people and physical operation of the installation. The two roles work side by side daily, but answer to different employers with different scopes. See the company man guide for the full distinction.