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IndustryGlossary Term

Letter of Interest

A formal document a subcontractor submits to a prime contractor or operator to express intent to bid on upcoming work. It is not a binding commitment, but helps secure a spot in the tender process. Common in pre-qualification stages for large oilfield or construction scopes.

Related Terms

Hydrocyclone

Industry

A cone-shaped separation device that removes solids or liquids from drilling fluids using centrifugal force. Subcontractors service and maintain these units on drilling rigs and fluid processing systems. Proper handling requires familiarity with high-pressure fluid systems and waste disposal regulations.

BOEPD (Barrels of Oil Equivalent Per Day)

Industry

A standardised measure combining oil, gas, and NGL output into a single daily production figure. Operators use it to size contracts and scope field service requirements. Higher BOEPD targets typically mean more crews, equipment, and sustained subcontractor workload.

Feasibility Study

Industry

A pre-project assessment that evaluates whether a scope of work is technically and financially viable. For subcontractors, it signals early-stage work that may lead to awarded contracts. Participating in feasibility work can position your company for the larger project bid.

Ip30 (initial Production 30-Day Rate)

Industry

A well's average daily output during its first 30 days of production. Operators use IP30 figures to evaluate well performance and plan follow-on service scopes. Strong IP30 results often drive faster mobilisation of additional field crews and equipment.

Leasehold

Industry

Land or mineral rights an operator has legally secured through a lease agreement with the landowner or Crown. Subcontractors typically work within leasehold boundaries, so access, permitting, and site rules are set by the operator holding the lease. Understanding leasehold limits helps crews avoid trespassing on adjacent unlicensed areas.

Shut-In Production

Industry

A well or facility that has been temporarily halted from producing oil or gas. For subcontractors, shut-ins often mean suspended work orders and delayed invoicing. Confirm contract terms around standby rates before production stops.

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