Learn more in detail about our services

Discover how our specialized solutions and expert teams ensure reliable, efficient, and safe oilfield operations tailored to your unique needs.

Well Head Installation

We offer turnkey installation of oil and gas well heads, handling everything from procurement and logistics to commissioning. Our team works with both surface and subsea well head systems, ensuring precision alignment, pressure integrity, and OEM specification adherence.

Our Installation Services Include:

  • Primary and secondary sealing installation
  • Installation of casing heads, tubing spools, and hangers
  • X-mas tree and valve fitment
  • Pressure testing & system calibration
  • API 6A-compliant procedures
  • Documentation and post-installation reporting

Well Head Maintenance

Preventive and corrective maintenance is essential to prevent system failure and costly shutdowns. We provide routine inspections and corrective interventions for mechanical, hydraulic, and sealing components of the well head.

Maintenance Capabilities:

  • Lubrication, cleaning, and greasing of valves and seals
  • Integrity testing (hydrostatic, ultrasonic, etc.)
  • Replacement of worn or damaged components
  • Well head corrosion management and protective coatings
  • Hot-tapping and on-stream leak sealing
  • Emergency troubleshooting

 Well Head Management

Our integrated well head management service offers end-to-end lifecycle support to extend asset life and reduce total cost of ownership. We combine field service with digital inventory, performance tracking, and predictive maintenance protocols.

Features:

  • Asset tagging and inventory control
  • Lifecycle scheduling and documentation
  • Predictive maintenance planning using performance data
  • Real-time monitoring and inspection logs
  • Data archiving and reporting dashboards

 

X-mas Tree Services

We specialize in the installation, maintenance, and servicing of X-mas tree systems (conventional, dual, horizontal types), supporting both production and injection wells.

Our X-mas Tree Services Cover:

  • Assembly and installation
  • Valve function testing and calibration

  • Choke inspection and repair
  • Tree removal and re-installation
  • Integration with SCADA and pressure systems

 

Flange & Valve Integrity Services

We deliver high-precision flange management and valve integrity solutions to maintain seal integrity across the well head and flowlines.

Key Solutions:

  • Controlled bolt torquing and tensioning
  • Flange face re-machining and resurfacing
  • Valve seat repairs and leak testing
  • Hydraulic torque and tensioning tools
  • Controlled flange spreading and alignment

Offshore and Onshore Support

Our teams are fully trained and certified for both onshore and offshore deployments, including swamp, deepwater, and marginal field operations.

Support Services Include:

  • Mobilization of field service teams and OEM equipment
  • Rig support and remote supervision
  • Compliance with DPR, NUPRC, and IADC standards
  • HSE-certified lifting, rigging, and access operations

Our Other Specialized Services

Advanced Solutions Beyond Standard Well Head Operations

At Senior Wells Nigeria Limited, we understand that well head systems are only one part of a complex oilfield ecosystem. That’s why we offer a range of specialized and complementary services to support complete field development, production integrity, and safety assurance.

Hydraulic Control Line Installation & Testing

We install and test hydraulic control lines that operate subsurface valves and X-mas tree components. Our expertise includes deepwater, high-pressure, and multizone well configurations.

Key services:

  • Installation of capillary tubes and encapsulated lines
  • Bending, spooling, and deployment tools
  • Pressure testing and fluid integrity checks
  • Leak detection using NDT techniques
  • Integration with SCSSV/ESDV systems

Well Abandonment & Plugging Services

When a well reaches the end of its productive life or needs to be temporarily sealed, we offer safe, compliant well abandonment services that protect both personnel and the environment.

Our capabilities include:

  • Primary and secondary cement plug placement
  • Pressure isolation and zone separation
  • Cut and cap services for surface equipment
  • Retrieval and disposal of downhole tools
  • Regulatory documentation and compliance (NUPRC, DPR)

OEM Spare Parts Supply & Procurement Support

We partner with leading Original Equipment Manufacturers (OEMs) to supply certified spare parts, ensuring interchangeability, quality, and performance for well head systems.

Our supply chain covers:

  • Valves, chokes, gaskets, seals, packers
  • Tubing hangers, control systems, bolts & fittings
  • Rapid response for critical part sourcing
  • Inventory management and stocking support
  • Importation logistics and customs clearance

Emergency Shutdown (ESD) Valve Systems

We deliver automated and manual ESD valve systems that ensure rapid response during critical events. These systems are vital for protecting both personnel and infrastructure.

We provide:

  • Supply and installation of surface ESD valves
  • Integration with process control and SCADA systems
  • Fire-rated ESD actuators and controls
  • ESD valve testing and calibration
  • System audits and HAZOP support

Well Pressure Control Equipment Rentals

We offer a fleet of well control and pressure management tools for short- and long-term projects.

Available rental equipment:

  • Blowout Preventers (BOPs)
  • Gate and plug valves
  • Choke manifolds and flowlines
  • Hydraulic power units (HPUs)
  • Pressure test units and gauges
  • Flange facing and cold cutting equipment

All equipment is regularly inspected, pressure-tested, and HSE-certified for offshore and onshore deployment.

Surface Safety Valve (SSV) & Subsurface Safety Valve (SSSV) Services

We install, test, and maintain both surface-mounted and downhole safety valves, which are essential for well control and environmental safety.

Services include:

  • Actuator installation and wellhead interface
  • SSSV deployment using slickline and wireline
  • Leak detection and repair of safety valves
  • Functionality tests (full open/close cycles)
  • Valve redress and OEM-certified replacement parts