An 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.
Working Interest
Related Terms
Abrasive Blasting
IndustryA surface preparation method that uses high-pressure propelled media (sand, steel grit, or slag) to clean and profile metal surfaces before coating or painting. Subcontractors performing this work typically require specialised equipment, trained operators, and site-specific permits. It is common in pipeline, vessel, and structural steel maintenance scopes.
Lithium-Bearing Brine
IndustrySubsurface saltwater containing dissolved lithium, extracted from formations during drilling or dedicated mining operations. Subcontractors may encounter it on fluid handling, well servicing, or evaporation pond construction contracts. Demand for lithium is driving new project activity across western Canada and the Prairies.
Radial Conveyor
IndustryA belt conveyor mounted on a wheeled chassis that pivots in an arc to distribute bulk materials across a wide stockpile area. Subcontractors use them on aggregate, sand, and gravel sites to manage material placement without constant repositioning. They reduce manual labour and speed up site operations significantly.
Emulsion Breakers
IndustryChemical additives used in oil and gas processing to separate water from crude oil in production streams. Subcontractors handling fluid management or chemical injection skids are often responsible for their application and dosing. Proper handling requires WHMIS (Workplace Hazardous Materials Information System) compliance and PPE protocols.
Wastewater Injection
IndustryThe process of pumping produced water or other fluid waste deep into underground formations for disposal. Subcontractors operating injection pumps or wellbore equipment must meet strict provincial and federal disposal regulations. Work often requires specialised well integrity certifications and detailed fluid volume reporting.
Legacy Site
IndustryAn older facility or work location operating on outdated infrastructure, systems, or equipment. Subcontractors often face non-standard conditions, ageing assets, and extra compliance requirements on these sites. Mobilisation and scoping costs can be higher due to undocumented or deteriorated site conditions.
Latest Industry News
Empire Petroleum Takes 25% Stake in Southwest Louisiana Three-Well Development Program
Tulsa-based Empire Petroleum is participating in a three-well oil and gas development program in Calcasieu Parish, Louisiana, holding a 25% working interest in the first well with completion operations set for April 2026.
3 months ago IndustryGran Tierra Partners with Ecopetrol on Colombia Fields, Signaling New Drilling Activity Near Acordionero
Gran Tierra Energy has signed a deal to acquire a 49% working interest in the Tisquirama block in Colombia's Middle Magdalena Valley, partnering with Ecopetrol to expand waterflood and drilling operations adjacent to its Acordionero field.
3 months ago IndustryBuccaneer Energy Expands East Texas Position with Carlisle-1 Well Acquisition
Buccaneer Energy acquired 100% working interest in the Carlisle-1 well in East Texas' Pine Mills field, boosting its planned waterflood unit stake to over 50%.
3 months ago IndustryCanada Greenlights 1M-Bpd Alberta-to-Pacific Pipeline for 2027 Start
Canada and Alberta unveiled plans for a new 1-million-barrel-per-day pipeline from the oil sands to British Columbia's coast, with construction targeted to start as early as September 2027.
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Industry GuideHow Rig Count Trends Affect Subcontractor Demand and What to Do About It
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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.
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