Product Overview

Summary: This Blowout Prevention Safe Operating Procedure sets out clear, step-by-step controls to prevent uncontrolled releases of pressure, fluids, or gas during drilling and pressurised operations. Designed for Australian conditions and WHS requirements, it helps organisations protect workers, plant, and the environment from catastrophic blowout events and costly downtime.

Blowouts are among the most serious hazards in drilling and pressurised well operations, with the potential to cause multiple fatalities, major environmental damage, and long-term reputational harm. In the Australian regulatory environment, operators are expected to demonstrate robust, documented controls for preventing loss of well control and managing abnormal pressure events. This Blowout Prevention Safe Operating Procedure provides a structured, defensible approach to planning, operating, monitoring, and maintaining blowout prevention systems across onshore and offshore activities.

The SOP details the lifecycle of blowout prevention—from pre-spud planning and equipment verification through to real-time monitoring, shut‑in procedures, and post-incident review. It clarifies roles and communication pathways, sets minimum standards for testing and inspection of blowout preventers (BOPs) and associated control systems, and prescribes clear trigger points for escalating concerns before a situation becomes critical. By implementing this procedure, organisations can demonstrate due diligence under Australian WHS law, support Major Hazard Facility and safety case obligations, and provide frontline crews with practical, actionable guidance they can follow under pressure.

Developed with Australian drilling operations in mind, this SOP aligns with recognised industry practice and integrates WHS risk management principles, including hierarchy of control, permit-to-work, and emergency response planning. It helps operators standardise blowout prevention practices across rigs and contractors, reducing variability, strengthening supervision, and supporting competency-based training and verification of competence (VoC) programs.

Key Benefits

• Reduce the likelihood of catastrophic blowout events through clear, standardised prevention and control measures.
• Ensure compliance with Australian WHS legislation, safety case requirements, and recognised industry practice for well control.
• Strengthen frontline decision-making by providing concise trigger points and step-by-step actions for abnormal pressure situations.
• Improve equipment reliability through defined inspection, testing, and maintenance requirements for BOPs and associated systems.
• Enhance contractor management and onboarding by setting a consistent, documented expectation for blowout prevention practices.

Who is this for?

• Drilling Supervisors
• Rig Managers
• Wellsite Managers
• WHS Managers
• Petroleum Engineers
• Maintenance Supervisors
• Oil and Gas Operations Managers
• HSE Advisors
• Project Engineers
• Field Technicians (Drilling and Completions)

Hazards Addressed

• Uncontrolled release of well fluids or gas (blowout)
• Fire and explosion from ignition of hydrocarbons
• Sudden pressure release causing impact and projectiles
• Asphyxiation or exposure to toxic gases (e.g. H2S)
• Structural failure of well control equipment under overpressure
• Environmental contamination from uncontrolled discharge of hydrocarbons or drilling fluids
• Loss of well integrity due to improper shut‑in or kill procedures
• Manual handling and crush injuries during BOP installation and maintenance
• Fatigue-related errors in monitoring and response to well conditions

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations (including BOP, kick, shut‑in, kill mud, MAASP)
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Company Policies
• 5.0 Risk Assessment and Planning for Blowout Prevention
• 6.0 Blowout Prevention Equipment Requirements and Specifications
• 7.0 Pre‑Spud and Pre‑Operation Checks and Acceptance Criteria
• 8.0 BOP Installation, Rig‑Up and Pressure Testing Procedures
• 9.0 Normal Drilling Operations and Well Monitoring Requirements
• 10.0 Early Warning Signs of a Kick and Escalation Triggers
• 11.0 Kick Detection, Shut‑In and Well Control Procedures
• 12.0 Communication, Reporting and Permit-to-Work Interface
• 13.0 Emergency Response and Evacuation Considerations for Blowout Scenarios
• 14.0 Inspection, Testing, Maintenance and Recordkeeping for BOP Systems
• 15.0 Training, Drills and Verification of Competence (VoC)
• 16.0 Contractor and Third-Party Interface Management
• 17.0 Incident Reporting, Investigation and Corrective Actions
• 18.0 Document Control, Review and Continuous Improvement

Legislation & References

• Work Health and Safety Act 2011 (Cth) and equivalent state and territory WHS Acts
• Work Health and Safety Regulations 2011 (Cth) – including provisions for high risk work, plant and hazardous chemicals
• Offshore Petroleum and Greenhouse Gas Storage (Safety) Regulations 2009
• NOPSEMA – Safety Case Guidance for Offshore Petroleum Facilities
• Safe Work Australia – How to Manage Work Health and Safety Risks: Code of Practice
• AS/NZS ISO 45001:2018 Occupational health and safety management systems
• AS/NZS 3788: Pressure equipment – In-service inspection
• API Standard 53: Blowout Prevention Equipment Systems for Drilling Wells (used as recognised industry practice in Australian operations)