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
Pressure Pumping
IndustryA well stimulation service involving the high-pressure injection of fluids — such as fracturing fluid, cement, or acid — into a wellbore to improve production or complete the well; for subcontractors, it represents a specialised, equipment-intensive scope of work that typically requires certified operators, dedicated pump trucks, and close coordination with the primary operator on site.
Debottlenecking
IndustryThe process of identifying and removing constraints that slow production or operations on a job site. For subcontractors, this often means short-term scopes to upgrade equipment, piping, or workflows. Debottlenecking projects can generate fast-mobilisation work but typically run on tight timelines.
FSU (Floating Storage Unit)
IndustryA moored vessel used solely to store crude oil or LNG offshore, without production capabilities. Subcontractors are engaged for inspection, maintenance, and marine support work aboard these assets. Mobilisation logistics and offshore safety certifications are typically required before access is granted.
Integrity Management
IndustryA structured programme for inspecting, maintaining, and documenting assets to ensure they remain safe and operational. Subcontractors are often hired to perform integrity work such as corrosion inspection, NDT, and pipeline assessments. Accurate recordkeeping is critical, as clients and regulators require full audit trails.
Candu (canadian Deuterium Uranium) Reactor
IndustryA Canadian-designed nuclear reactor that uses heavy water as a moderator and coolant. Subcontractors working on maintenance or upgrades face strict nuclear regulatory compliance and specialised certification requirements. Expect rigorous site access controls, radiation safety training, and detailed documentation standards.
Diverging Diamond Interchange
IndustryA road interchange design where traffic briefly crosses to the opposite side of the road between two intersections. Subcontractors hauling heavy equipment or oversized loads must account for altered lane patterns and potential permit route restrictions. Plan site access carefully, as DDI layouts can complicate convoy movements and GPS routing.
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.
5 months agoIndustryCGA Breaks Down $83.2B Utility Damage Cost by State
Common Ground Alliance has released state-by-state cost estimates for underground utility line strikes, giving excavation and utility subcontractors localized data to back damage-prevention spending. Direct repair costs account for less than 6% of total impact.
21 hours agoIndustryCiting Trump, GOP Regulators Reject Gas Plant for Amazon Data Center
North Carolina regulators denied Duke Energy's $584 million gas turbine plan tied to Amazon's Richmond County data center, citing unanswered demand and cost-allocation questions.
21 hours agoIndustryGoodnight Midstream Breaks Ground on Estacado Water Pipeline in New Mexico
Goodnight Midstream has started construction on the 90-mile Estacado produced-water pipeline in Eddy and Lea counties, New Mexico, with service expected by early 2027.
21 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
