Conductor removal is the critical structural phase of decommissioning an oil or gas well. It involves cutting, retrieving, and disposing of the large-diameter heavy steel pipe (the conductor) that provides the structural foundation for the well bore. This process occurs during structural well abandonment or slot recovery projects, ensuring the ocean floor is left clean and compliant with international environmental and safety regulations.
wellnit Conductor Removal services for your Slot Recovery or Abandonment project. Mactech uses a Diamond Wire Saw to cut the conductor off so that the conductor can be recovered and a whipstock can be installed. Once divers install the Diamond Wire Saw and conductors are removed, a Dual Pin Drill is used to make holes for inserting a lifting pin. Next a Diamond Wire Saw is used to sever the conductor. The severed conductor pieces are lifted away and moved to a staging area or materials barge for transportation. Then the operation is repeated until the entire conductor sting is recovered and an empty slot is left for a new well to be drilled.
Core Advantages
- Shorter Project Timelines – Advanced multi-string casing cutting technology has been proven to reduce project timelines by over 30% compared to conventional decommissioning methods.
- Lower Operating Costs – The rig-less and cut-and-lift integrated system reduces mobilization costs and vessel charter fees compared to traditional rig-based operations.
- Enhanced Safety – Remote-controlled operation and monitoring keep personnel at a safe distance from hazardous cutting zones.
- Cleaner and More Precise Cuts – Fully automated clamping, feeding, and speed control ensure consistent cutting quality across multiple casing strings.
- Adaptability to Complex Site Conditions – The system is capable of handling real-world offshore challenges, including conductor deformation, marine growth adhesion, and damaged conductors.
- Environmental Compliance – Ensures conductor cuts are made below the mudline to the required depth (typically no less than 15 feet), in full compliance with international regulatory requirements.
Service details include
- Conductor cutting
- Retrieval & recovery
- Compliant disposal
Technical Advantages
Rig-less Solutions
Reduce mobilization costs and project downtime compared to conventional rig-based operations.
01
Advanced Subsea Cutting Technology
Diamond wire saw (DWS) and mechanical cutting systems ensure precision, speed, and minimal environmental disturbance.
02
Experienced Offshore Teams
Skilled crews with hands-on experience in platform decommissioning, conductor removal, and subsea operations.
03
Proven Track Record
Multiple completed cutting projects and successful platform dismantling operations.
04
Compliance-Driven Approach
Operations aligned with international environmental and safety standards.
05
Service Process
Site Assessment & Engineering Survey – Evaluate platform/well conditions and project scope.
Solution Design – Develop tailored rig-less decommissioning or cutting plan.
Mobilization & Equipment Deployment – Deploy subsea cutting tools and offshore crew.
Execution – Perform well plugging, conductor removal, or pipeline cutting operations.
Recovery & Disposal – Retrieve materials and manage compliant disposal.
Reporting & Verification – Provide project documentation and compliance verification.
