The process of defining the boundaries and quantity of an oil, gas, or mineral deposit through appraisal drilling and testing. For subcontractors, it signals a sustained work programme requiring crew, equipment, and logistical planning. Delineation phases often drive multi-month contracts for drilling, completions, and field services.
Resource Delineation
Related Terms
Aeroderivative Turbine
IndustryA lightweight gas turbine adapted from jet engine technology, used for power generation and compression on oil and gas sites. Subcontractors are often called in for maintenance, hot-section inspections, and component exchanges. These units start up quickly and are common on remote or temporary installations.
Run/repair/replace
IndustryA decision-making framework used to evaluate whether aging or damaged equipment should continue operating, be repaired, or be swapped out entirely. Subcontractors are often called in to assess assets and execute whichever option the client authorises. Understanding this process helps field crews scope work accurately and avoid scope creep on site.
Task Order
IndustryA formal document issued under a master contract that authorises a specific scope of work, timeline, and budget. Subcontractors use task orders to mobilise crews and bill for individual job phases. Each task order typically carries its own number for invoicing and cost-tracking purposes.
Frac Fleet
IndustryA complete set of hydraulic fracturing equipment deployed together at a well site, including pumps, blenders, and support units. For subcontractors, a frac fleet mobilisation often triggers large, time-sensitive labour and equipment contracts. Knowing fleet size helps you scope crew requirements and forecast workload duration.
Lower 48
IndustryRefers to the contiguous United States, excluding Alaska and Hawaii. For subcontractors, it defines a common work jurisdiction with distinct regulatory, tax, and labour rules from Canadian or Alaskan operations. Mobilisation costs and compliance requirements differ significantly when crews cross into or out of this region.
Prefabrication
IndustryThe assembly of piping, structural, or mechanical components in a controlled shop environment before site installation. Subcontractors often bid prefab scope separately from field installation work. It can reduce on-site labour hours and shorten project schedules.
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