A form of metal cracking caused by hydrogen sulphide (H₂S) exposure under stress, common in sour gas environments. Subcontractors must use SSC-resistant materials and equipment rated for sour service on these sites. Non-compliant tools or components can fail catastrophically, creating serious liability and safety risks.
SSC (Sulfide Stress Cracking)
Related Terms
Geosteering
IndustryThe real-time technique of guiding a drill bit through a target formation using geological data. Subcontractors supporting drilling operations may be called in on short notice as geosteering decisions change well paths. Expect scope adjustments and rapid crew or equipment mobilisation when geosteering is active.
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.
Perforated Interval
IndustryThe section of casing or liner that has been shot through with charges to allow hydrocarbons to flow into the wellbore. Subcontractors working completions or workovers need to know the perforated interval to plan fluid placement and tool runs accurately.
Mid-Continent
IndustryA regional designation covering oil and gas producing areas across Oklahoma, Kansas, and parts of surrounding states. For subcontractors, it signals a distinct labour market, regulatory environment, and client base. Mobilisation costs and crew logistics differ significantly from other North American basins.
Decommissioning
IndustryThe process of safely shutting down and dismantling oil and gas infrastructure at end-of-life. For subcontractors, it generates significant work in removal, remediation, and site restoration. Scopes often include demolition, equipment salvage, and regulatory closeout tasks.
Hub
IndustryIn field logistics, a central staging location where crews, equipment, and materials are coordinated before deployment to remote job sites — the hub determines mobilisation routes, laydown areas, and logistical costs. In natural gas markets, a physical or virtual trading point where gas is bought, sold, and priced; hub pricing (AECO in Alberta, Henry Hub in the U.S.) directly affects contract rates and fuel costs for field service companies.
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