The 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.
In-Service Date
Related Terms
Completion Crews
IndustrySpecialised teams mobilised after drilling to prepare a well for production. For subcontractors, they represent a distinct scope of work with separate contracts, timelines, and crew requirements. Demand is tied directly to operator completion schedules, affecting short-notice mobilisation and billing cycles.
MISO (Midcontinent Independent System Operator)
IndustryA regional grid operator managing electricity transmission across central North America. Subcontractors working on power infrastructure or energy facilities in MISO territory must align project schedules with its grid access and outage approval processes. Permitting and energisation timelines are often dictated by MISO interconnection queues.
Working Interest
IndustryAn ownership stake in an oil and gas lease that obligates the holder to pay a share of exploration and production costs. For subcontractors, knowing who holds working interest helps identify who is ultimately responsible for approving work orders and invoices. Operators typically hold majority working interest and are your primary point of contract.
IMR (Inspection, Maintenance, and Repair)
IndustryA category of ongoing field service work covering routine inspections, preventive maintenance, and corrective repairs on infrastructure or equipment, often awarded to subcontractors through standing agreements or blanket contracts. For field service companies, IMR scopes provide a reliable stream of recurring work but typically require crews to mobilise quickly and hold multiple trade certifications to meet operator requirements.
Cementing
IndustryThe process of pumping cement slurry into a wellbore to seal the casing and isolate formation zones. Subcontractors may be hired to provide cementing crews, pumping equipment, or bulk material handling. It is a critical well integrity step with strict regulatory and operator specifications.
Midstream Infrastructure
IndustryThe pipelines, compressor stations, and processing facilities that move and condition product between the wellhead and end markets. For subcontractors, it represents a major source of maintenance, construction, and inspection work. Contracts here often involve long project timelines and strict regulatory oversight.
Latest Industry News
Williams Targets End-of-2027 In-Service Date for $1.2B Southeast Supply Enhancement Project
Williams is targeting an end-of-2027 in-service date for its $1.2 billion Transco Southeast Supply Enhancement project, adding 1.6 million dekatherms per day of gas transport capacity across Virginia, the Carolinas, Georgia, and Alabama.
2 months agoIndustryHydro One Files for Approval on $430M Ontario Transmission Line Targeting 2029 In-Service Date
Hydro One has applied to the Ontario Energy Board to build a 55-kilometre, 230-kilovolt transmission line between Clarington and Peterborough County, representing a $430 million construction opportunity for utility subcontractors.
2 months agoIndustryATC's Central Wisconsin 345-kV Rebuild Enters Active Construction
American Transmission Co. has installed the first structure on its Grid Forward Central Wisconsin project, a MISO-approved 345-kV rebuild now 5% complete and on track for a December 2030 in-service date.
9 days agoIndustryChesapeake Utilities Plans $1.2B Gas Pipeline for South Florida
Chesapeake Utilities has proposed a $1.2 billion, 24-inch intrastate gas pipeline from Palm Beach to Miami-Dade County, creating early bid opportunities for engineering, right-of-way, and pipefitting contractors ahead of a targeted 2030 in-service date.
1 month 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
