GOAF Drainage
& service wells

Critical Mine Infrastructure.
Engineered for Long-Term Performance.

Efficient gas management and robust ventilation pathways are fundamental to safety and productivity in underground coal operations.

Lucas is a leading provider of specialised goaf drainage wells and vertical service bores, offering the technical capability to design and execute high-diameter configurations up to 36” (914mm).

By combining advanced well-planning with rugged, field-proven execution, we deliver the structural integrity required to optimise gas drainage, maintain ventilation compliance, and protect the long-term value of your mining asset.

Bridging the Gap Between Design and Rig Execution

Constructing large-diameter service bores and complex goaf wells requires absolute alignment between engineering assumptions and rig capabilities. Lucas completely eliminates the typical disconnects seen when hiring separate consultancies and contractors.

  • Fit-for-Purpose Infrastructure Design
    Our engineering division designs well profiles, casing programmes, and cementing procedures around real-world rig capacities and exact downhole conditions rather than idealised, theoretical models.
  • Real-Time Data Integration
    Because our engineering and operations teams operate as a single unit, live field data - such as hole cleaning performance and torque response—is immediately fed back into the operational plan, preventing costly delays.
  • Absolute Accountability
    From pre-feasibility mapping through to final well commissioning, Lucas provides a single point of contact. This eliminates stakeholder finger-pointing and ensures that project deliverables are met on time and within budget.

The Integrated Advantage: Single-Source Asset Protection

Aligning the field execution directly with design engineering to eliminate the common industry friction points found in your capability survey.

Specialised GOAF & Service Well Capabilities

Heavy-Duty Engineering for Complex Underground Environments.

We possess the specialised equipment and technical field intelligence required to execute large-scale mine infrastructure wells, including:

  • Large-Diameter Service Bores
    Complete capacity to drill and case vertical and angled wells up to 36” (914mm) diameter for critical applications, including mine ventilation, ballast dropping, and dewatering.
  • Proactive GOAF Drainage Wells
    Engineering high-performing vertical and directional goaf wells to safely capture and remove methane, ensuring mine safety ahead of and behind active longwall faces.
  • Complex Strata Navigation
    Deploying advanced drilling mud and casing strategies to safely maintain wellbore stability when passing through highly fractured, unstable, or heavily overdrilled ground.
  • Precision Targeting
    Utilising advanced ranging and steering tools to ensure vertical or angled bores intersect underground mine workings with absolute accuracy.

Minimising Operational Risk Prior to Mobilisation

Drilling large-diameter infrastructure wells introduces significant mechanical forces and potential gas-control hazards.
Through our Safety in Design (SiD) framework, Lucas systematically isolates and engineers out project risks at the planning phase:

  • Advanced Well Control & Pressure Modelling
    Pre-modelling downhole geology and pressure regimes to design robust casing strings and fluid management programmes, mitigating the risk of lost circulation.
  • Quantified Mechanical Envelopes
    Simulating torque, drag, and hole cleaning metrics to ensure large-diameter operations stay strictly within safe, predictable limits.
  • Harmonised Tier 1 Safety Frameworks
    Developing comprehensive, site-specific Trigger Action Response Plans (TARPs) that reduce residual operational risk to As Low As Reasonably Practicable (ALARP).

Secure Your Mine Infrastructure with Absolute Precision.

Don't risk critical ventilation compliance or asset uptime with uncoordinated engineering and field execution.
Partner with Lucas to ensure your goaf and service well programmes are delivered safely and on schedule.