The upstream segment of the oil and gas industry covering the search for and extraction of hydrocarbons, representing the primary client base that hires field service subcontractors for drilling, completions, well servicing, and site construction work. Understanding whether a client operates in E&P helps subcontractors anticipate project cycles, budget timing, and the boom-and-bust demand patterns that directly affect contract volumes and payment schedules.
E&P (Exploration and Production)
Related Terms
WCB (Workers' Compensation Board)
IndustryProvincial agencies in Canada that provide workplace injury insurance. Contractors must maintain WCB coverage and good standing to work on most sites.
Service Company
IndustryA company that provides specialized services to oil and gas operators, such as drilling, completions, workover, transportation, or maintenance. Also called oilfield services (OFS).
BHA (Bottom Hole Assembly)
IndustryThe collection of drilling tools and equipment at the bottom of the drill string, including the drill bit, drill collars, stabilizers, and downhole motors. For drilling subcontractors, BHA configuration directly impacts drilling performance, tool wear rates, and operational efficiency.
GWD (Getting Work Done)
IndustryA safety and compliance management system used by some operators to pre-qualify and manage contractors working on their sites.
TD (Total Depth)
IndustryThe maximum depth reached by a drilling rig during well construction, measured from the surface to the bottom of the wellbore. For subcontractors, TD determines project scope, equipment requirements, and billing milestones as it marks the completion of the drilling phase.
Upstream
IndustryThe segment of the oil and gas industry involved in exploration and production (E&P). Includes drilling, completions, and well operations.
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