Strait of Hormuz

A legal threshold where a well produces enough oil or gas to justify continued operations and generate profit. For subcontractors, it determines whether a site stays active and whether ongoing service contracts remain in force. Loss of paying quantities can trigger contract suspension or early termination clauses.

Milled or crushed material salvaged from existing asphalt surfaces during road removal or rehabilitation work. Subcontractors reuse RAP as base material or blend it into new asphalt mixes, reducing material costs. Proper handling and testing requirements may apply depending on project specs.

Raw material fed into a processing facility, such as crude oil, bitumen, or natural gas. Subcontractors often support feedstock handling through pipeline work, tank maintenance, and material transfer operations.

A regional transmission organisation managing the electrical grid across 14 U.S. states. Subcontractors working on power infrastructure, grid upgrades, or energy facilities in this region must align with SPP reliability standards. Understanding SPP's operating rules helps field crews coordinate outages and energisation schedules.

A written commitment from a client indicating they plan to award a subcontractor a contract. It allows work or mobilisation to begin before the formal contract is signed. LOIs are not always legally binding, so subcontractors should clarify payment obligations before proceeding.

The evaluation of reservoir rock and fluid properties using well log data and core samples. Results determine whether a well is worth completing, directly affecting drilling programme scope and subcontractor workload. Field crews support this work through wireline logging, coring, and fluid sampling operations.

What 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.