Well Intervention
Slickline & Wireline Services
Precision downhole diagnostics and intervention through slickline and wireline operations — maximising well performance with minimal surface disruption.
Service Overview
Slickline & Wireline Well Intervention
Sequential International's slickline and wireline team provides precision downhole services for producing and idle wells across the Niger Delta. From plug-setting and gauge installation to perforation and production logging, our services deliver critical well data and mechanical interventions.
Our units are equipped with the latest downhole tool strings and operated by IWCF-certified technicians who understand the unique challenges of Niger Delta well conditions.
“Downhole data is the foundation of smart well management — our slickline and wireline services give operators the intelligence they need.”
What We Deliver
Scope of Work
Plug Setting & Retrieval
Setting and retrieval of bridge plugs, cement retainers, and wireline set packers for zone isolation and workover support.
Gauge Installation
Installation and retrieval of downhole pressure and temperature gauges for reservoir monitoring and well test data acquisition.
Perforation
Cased hole perforation using wireline-conveyed perforating guns for new zone openings and reperforations.
Production Logging
Spinners, fluid identification, and temperature logs to identify production and injection profiles.
Fishing Operations
Retrieval of stuck downhole tools, parted wireline, and lost BHA components using slickline fishing tools.
Choke & Valve Changes
Downhole adjustable choke and standing valve changes to optimise well inflow performance.
How We Work
Our Service Process
Well Data Review
Review of wellbore schematic, completion diagram, and operation objectives.
Tool String Selection
Selection and function testing of downhole tool string at surface before rigging up.
Rig-Up & Pressure Control
Lubricator and pressure control equipment rigged up and pressure tested before any downhole run.
Operation & Data Delivery
Controlled tool runs with real-time depth tracking and full post-job data reporting.
Why Choose Us
Key Benefits
Minimal Production Disruption
Slickline and wireline operations are typically performed under live well conditions with minimal production impact.
Real-Time Downhole Data
Electronic wireline tools deliver real-time pressure, temperature, and fluid data during operations.
IWCF Certified Crew
All well intervention personnel hold valid IWCF certification for well control competence.
Wide Tool Inventory
Extensive downhole tool inventory covering common well configurations in the Niger Delta.
Fishing Capability
Specialist fishing tool strings available for retrieval of stuck tools and downhole fish.
Full Post-Job Reporting
Comprehensive final report with depth logs, tool run data, and well schematic updates.
Slickline and wireline operations are conducted under full well control conditions. All lubricators and stuffing boxes are pressure tested before any tool is run downhole. IWCF well control certification is mandatory for all crew members.
Capabilities
Equipment & Capabilities
Slickline Units
Single-strand and multi-strand slickline units with depth measurement and weight indicator.
E-Line Units
Mono-conductor and multi-conductor wireline units with surface read-out systems.
Plug & Packer Tools
Bridge plug, cement retainer, and mechanical packer setting tools for multiple casing weights.
Perforation Guns
Tubing-conveyed and wireline-conveyed perforating guns in standard shot density configurations.
Downhole Gauges
Electronic memory and real-time pressure/temperature gauges for well testing and production monitoring.
Fishing Tools
Impression blocks, overshots, spears, and jars for fishing operations in a range of tubing sizes.
Need Slickline or Wireline Services?
Tell us your well details and intervention objectives — our team will design the right tool string and operation plan to deliver results safely and efficiently.