Work involving equipment or piping that handles highly alkaline chemicals, such as sodium hydroxide. Subcontractors must use compatible materials and certified personnel to avoid rapid corrosion and serious chemical burns. Specialised PPE and handling procedures are typically required by the client's safety plan.
Caustic Service
Related Terms
Flowback
IndustryThe initial release of fluids, sand, and gases from a wellbore after hydraulic fracturing, which requires specialised crews and equipment on-site to manage, separate, and dispose of the returned materials safely. For field service subcontractors, flowback operations represent a distinct scope of work with dedicated mobilisation requirements and often involve tight scheduling windows tied to the operator's completion timeline.
Legacy Well
IndustryAn older well built to outdated standards that may require specialised remediation, abandonment, or workover services. Subcontractors should expect non-standard equipment configurations and additional compliance requirements. Scope creep and unforeseen costs are common on legacy well projects.
NPRA (National Petroleum Reserve-alaska)
IndustryA large federally managed area in northwest Alaska open to oil and gas exploration and development. Subcontractors working here face extreme remote logistics, strict federal permitting, and seasonal access windows. Mobilisation costs and compliance requirements are significantly higher than conventional onshore projects.
Shaker Screens
IndustryMesh filters mounted on shale shakers that separate drill cuttings from drilling fluid on the rig. Subcontractors handling fluid management or solids control must track screen condition and swap them regularly. Damaged or plugged screens slow operations and can trigger downtime charges against your crew.
Midstream
IndustryThe segment of the oil and gas industry involved in processing, storing, and transporting oil, gas, and NGLs. Includes pipelines, gathering systems, and processing plants.
Secondary Stress
IndustryIndirect mechanical stress that develops in structures or piping due to thermal expansion, settlement, or equipment movement. Unlike primary stress, it isn't caused by direct applied loads. Subcontractors must account for it during installation and inspection to avoid material fatigue and warranty disputes.
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