Well Integrity

An emissions control device fitted to diesel-powered equipment that traps soot and particulate matter from exhaust. Subcontractors must ensure DPFs are maintained and operational to meet Tier 4 emissions requirements on regulated job sites. Failing inspections or bypassing filters can result in equipment being pulled from service.

The controlled burning of excess natural gas at a wellsite or facility. Subcontractors working on-site must follow strict flaring protocols, as ignition hazards affect work permits and safety zones. Flaring activity can also trigger regulatory hold points that delay field operations.

A regulated programme requiring subcontractors to inspect equipment for fugitive emissions using specialised tools like optical gas imaging cameras. Findings must be documented and repaired within set timeframes under federal and provincial regulations. Field crews performing LDAR work often require specific training and certification to stay compliant on site.

The legal obligation to compensate another party for damages or losses caused by your work or negligence. For subcontractors, this typically arises from property damage, personal injury, or contract breaches on a job site. Adequate general liability insurance is your primary protection against civil liability claims.

Official documentation submitted to regulatory bodies before starting work on a site. Subcontractors may be responsible for obtaining specific trade or activity permits. Delays in filings can halt work and affect project timelines and invoicing.

A mandatory stop in work where a client or inspector must review and sign off before the subcontractor can proceed. Missing a hold point can void certifications or trigger costly rework. Always confirm hold points during project kickoff to avoid schedule delays.

OSHA Citations on Multi-Employer Worksites: What Subcontractors Need to Know

Learn how OSHA's multi-employer citation policy works, why subcontractors get cited for hazards they didn't create, and how to protect your company on operator-controlled job sites.

How to Read and Negotiate an Oilfield Master Service Agreement (MSA): A Subcontractor's Guide

Learn which MSA clauses actually matter for oilfield subcontractors: indemnity, insurance, payment terms, and change orders. Know what you're signing.