The context
What makes oil and gas procurement different?
Four features set it apart from procurement in most other industries.
Concentrated, long-life spend. A drilling campaign, an EPC package or a multi-year operations contract can commit more value in one award than a year of routine purchasing. A copied scope or a weak remuneration model is locked in for the life of the contract.
Shared money. In a joint venture, the operator spends on behalf of partners who see the result last. Joint operating agreements grant audit rights for exactly that reason.
Recovered money. Under a production-sharing contract (PSC) or production-sharing agreement (PSA), allowable opex and capex is reclaimed from the host government - but only what the file can defend.
Thin markets. Some categories have one or two credible suppliers, and supply shocks move prices faster than a tender timetable. When supply is single-source, a competitive tender cannot do the work alone.
Each feature moves the decisive work earlier - into category strategy, tender architecture and contract design - and later, into post-award control and the cost recovery file.