A series of controlled flow and pressure measurements performed on a newly drilled or existing well to evaluate its production potential and reservoir characteristics; for subcontractors, this work often involves deploying and operating specialised equipment such as separators, flowback units, and data acquisition systems under tightly scheduled, high-priority conditions.
Well Testing
Related Terms
Parcel
IndustryA defined section of land or a lease area assigned to a specific project or operator. Subcontractors may be scoped and mobilised by parcel, affecting billing boundaries and crew deployment zones.
Exploratory Well
IndustryA well drilled in an unproven area to determine whether hydrocarbons are present, typically representing higher-risk, shorter-duration work for subcontractors with less certainty of follow-on contracts compared to development drilling programmes. Field service companies should account for the speculative nature of these projects when negotiating mobilisation costs and contract terms.
Failure Assessment Diagram (fad)
IndustryA FAD is an engineering tool used to assess whether a crack or defect in a component is safe to operate or requires immediate repair. Subcontractors use FAD assessments to support fitness-for-service decisions on pressurised piping, vessels, and structural welds. Results directly influence repair scopes, shutdown planning, and liability on field service contracts.
Hydrovac
IndustryA truck-mounted unit that uses pressurised water and a vacuum system to excavate soil safely around buried utilities. Subcontractors are frequently hired for hydrovac work on pipeline, civil, and utility projects. It is preferred over mechanical digging in areas with high strike risk.
Mud Logging
IndustryA well-site service that monitors drilling fluid returns to detect hydrocarbons and analyse formation data in real time. Subcontractors provide specialised technicians and instrumentation units for this work. It is commonly scoped as a standalone package within a drilling contract.
Energy Transition
IndustryThe global shift from fossil fuels toward renewables, hydrogen, and lower-emission energy sources. For subcontractors, it means new project types, updated certification requirements, and evolving client scopes. Diversifying skills into solar, wind, or carbon capture work helps firms stay competitive.
Latest Industry News
Expro Wins Geothermal Well Testing Contract for Vulcan Energy's Germany Project
Expro will provide surface well testing services for the first Schleidberg well under Vulcan Energy's Lionheart Project in Germany, supporting reservoir characterization and lithium extraction efforts.
6 months agoIndustryCrescent Keeps Devon's Eagle Ford Rig Pace in $4.2B Cash Deal
Crescent Energy will buy Devon's Eagle Ford assets for about $4.2 billion and hold activity near the current 2-3-rig pace. The company targets $140 million in annual synergies by the end of 2027.
11 hours agoIndustryDoral Brings 900 MW of Indiana's Mammoth Solar Online After Peak Build
Three phases of Doral Renewables' Mammoth Solar Project in Pulaski County, Indiana, totaling 900 MWAC, are nearing commercial operation. Construction peaked at about 1,800 workers, so subs should focus on closeout, billing and operations work.
11 hours agoIndustryAnduril's $3.7B Baltimore County Shipyard: No Bid Stage Yet
Anduril plans a 2-million-sq-ft submarine-component complex at Sparrows Point, Md., with groundbreaking targeted for early 2027. No general contractor or bid packages have been announced, and the construction budget is undisclosed.
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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.
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