The main company awarded a project contract who then hires subcontractors to perform portions of the work. As a sub, your agreement, invoicing, and compliance obligations flow through them—not the end client. They carry overall site liability and typically control scheduling and scope.
Prime Contractor
Related Terms
PWHT (Post-weld Heat Treatment)
IndustryA controlled heating and cooling process applied to welds after completion to reduce stress and improve strength. Subcontractors must confirm PWHT requirements before mobilising, as it adds time, equipment, and certified personnel to scope. Failing to price it into your bid can significantly erode job margins.
In-Service Date
IndustryThe date when equipment or a facility is officially commissioned and begins active operation. For subcontractors, this date often triggers billing milestones, warranty periods, or contract close-out requirements. Missing this date can result in penalties or delayed final payment.
Dewatered Sand
IndustrySand or granular material that has had excess water removed, typically through drainage or mechanical separation on site. Subcontractors handling dewatered sand face stricter disposal and hauling requirements than wet slurry. Confirm moisture content specs before mobilising equipment or quoting removal work.
JIP (Joint-industry Project)
IndustryA cost-sharing initiative where multiple operators or companies fund research, technology development, or industry challenges together. For subcontractors, JIPs can open doors to new contracts, but procurement processes are often slow and heavily governed. Understanding which operators are involved helps you identify who holds the real budget authority.
Screen Media
IndustryThe replaceable filtering surfaces installed in vibratory shakers and separators on drilling and processing sites. Types include wire mesh, polyurethane, and rubber panels, each suited to different material grades. Subcontractors are often responsible for sourcing, swapping, and disposing of worn screen media during operations.
Spot Work
IndustryShort-term, unplanned jobs awarded without a long-term contract, typically filled on short notice. Subcontractors are engaged for a single scope or site visit at a negotiated day rate. Common in shutdown, turnaround, and emergency maintenance situations.
Latest Industry News
Akita Drilling to Acquire Fox Drilling Stake from Paramount Resources
Paramount Resources is selling its Fox Drilling subsidiary stake to Akita Drilling in a share-based deal, giving Akita six triple drilling rigs and a committed 2,700-day work agreement over three years.
22 hours ago IndustryMisclassified Workers Are Costing Legitimate Contractors Bids, Report Finds
A new Economic Policy Institute report highlights how worker misclassification in construction distorts competitive bidding, letting non-compliant firms undercut law-abiding subcontractors on labor costs.
22 hours ago IndustryProtecting Maintenance Planners Delivers Up to $17.7 Million in Annual Value, Plant Services Reports
A single well-protected maintenance planner can generate up to $17.7 million per year for a company by boosting crew output and enabling proactive work, according to Plant Services. Field service companies that misuse planners on non-planning tasks are leaving serious money on the table.
22 hours ago IndustryShell's $13.6 Billion Bet on Montney Shale Signals Major Upstream Cycle for Western Canada
Shell plc has agreed to acquire ARC Resources in a deal valued at approximately $13.6 billion, marking one of the largest upstream consolidations in Canadian shale history and pointing to a significant spending cycle ahead for Western Canada field service companies.
22 hours agoRelated Guides
How Operator Mergers and Acquisitions Affect Your Subcontract Agreements
When operators merge, get acquired, or sell assets, subcontractor agreements are caught in the middle. Learn how M&A activity affects your MSA, payment terms, vendor status, and what to do before, during, and after a deal closes.
Industry GuideHow Rig Count Trends Affect Subcontractor Demand and What to Do About It
Rig counts are the earliest signal of where field service work is heading. Learn how to read drilling activity trends, anticipate demand shifts, and position your crew before the phone stops ringing.
Industry GuideWhat Is an AFE in Oil and Gas and How Does It Affect Subcontractor Payments?
An AFE (Authorization for Expenditure) controls every dollar spent on an oilfield project. Learn how it affects your billing, change orders, and cash flow as a subcontractor.
Stay sharp on field operations
Industry news and insights, delivered to your inbox.
Subscribe to FieldNews