Services
Comprehensive Upstream
Comprehensive Upstream
Energy Solutions
Our services are delivered to recognized industry standards with full HSE and Nigerian Content compliance.
Category 01
Drilling & Well Services
Drilling & Completion Fluids Engineering
Engineered fluid systems that protect the wellbore and the reservoir.
- Water, oil and synthetic-based mud system design
- Reservoir drill-in fluids; clear-brine completion and packer fluids
- Rheology, filtration and ECD management; wellsite fluids engineers
- Brine filtration, displacement and laboratory fluid testing
Solids Control Services
Cleaner fluids, less waste, faster drilling.
- Shale shakers, mud cleaners, desanders/desilters, centrifuges, dewatering units
- Trained operators and field service; equipment-package rental
- System optimisation to cut dilution and disposal volumes and improve ROP
Drilling Waste Management
Zero-harm, fully compliant management of drilling waste.
- Cuttings collection, transfer and treatment
- Cuttings dryers, thermal desorption, stabilisation and bioremediation
- Skip-and-ship logistics; cuttings re-injection (CRI) support
- Compliance with NUPRC, NESREA and EGASPIN requirements
Wellbore Clean-Up Services
Clean casing, clear brine, protected completions — the critical handover between drilling and production.
- End-to-end wellbore clean-up combining mechanical and chemical workstreams in a single, engineered displacement programme
- Mechanical clean-out: casing scrapers, brushes, magnets and junk baskets run to remove mud cake, cement debris, metal swarf and residual solids from the casing wall
- Chemical displacement: engineered spacer/pill trains (push pills, surfactant and viscous spacers) to displace drilling fluid and water-wet the casing
- Programme designed and supervised on-site for onshore, offshore and deep-water wells
Filtration Services
Solids-free fluids, on spec, every time — protecting the formation and the bottom line.
- High-efficiency filtration of completion, workover, kill and drilling fluids to defined clarity targets (turbidity to client NTU spec)
- Coarse-to-fine train: diatomaceous-earth (DE) / filter-press units for bulk solids removal, followed by cartridge and bag filtration for final polishing
- Brine clarification and reconditioning — restoring used or contaminated brines to gauge-quality for reuse
- Filtration support integrated with wellbore clean-up, completion and stimulation operations
- On-site units, real-time turbidity monitoring and full fluid-handling support for onshore, offshore and deep-water wells
OCTG Supply & Procurement Services
The right tubulars, to spec, on schedule — quality-assured from mill to wellsite.
- End-to-end procurement and supply of Oil Country Tubular Goods — casing, tubing, drill pipe and line pipe, plus pup joints, couplings, crossovers and accessories
- Sourcing across API (5CT / 5CRA) and premium connections in standard and corrosion-resistant grades, matched to well design and service conditions
- Quality-assured mill sourcing through vetted manufacturers, with full material traceability and mill certification (MTRs)
- Third-party inspection — mill surveillance, EMI, drift, dimensional and visual thread inspection to confirm conformance before delivery
- Threading, recutting and repair of connections, plus pipe rationalisation and refurbishment of existing stock
- Inventory management and stocking — call-off, just-in-time and buffer-stock arrangements to match the drilling programme
- Full logistics, expediting and customs clearance, with handling and running-support coordination to the wellsite
Fishing & Rental Tool Services
Recover the well, protect the asset, minimise downtime — specialist tools and expertise on demand.
- Full-scope downhole fishing to recover stuck, parted or lost equipment — drill pipe, BHA components, packers, tubing and junk
- Engineered fishing strings built from overshots, spears, jars, bumper subs and accelerators, designed around each fish and wellbore condition
- Milling and washover services to dress off, cut and recover lost-in-hole and cemented equipment
- Junk-retrieval tools — junk baskets, magnets and reverse-circulation tools to clear debris before completion or sidetrack
- Rental tool fleet: fishing tools, drilling and completion tools, handling and tubular-running equipment, and pressure-control accessories — available without capital outlay
- On-site fishing supervision and tool-string engineering for onshore, offshore and deep-water wells
Category 02
Project & Facilities
Project Management & Turnkey Projects
Single-point accountability from concept to commissioning.
- Integrated cost, schedule and scope controls; stage-gate governance
- Engineering, procurement and subcontract coordination
- QA/QC and HSE assurance; risk and change control
- Structured close-out and handover (PMI/PRINCE2 methodologies)
Facility Upgrades
Extending asset life and lifting production through safe brownfield modification.
- Debottlenecking, tie-ins and refurbishment of flowstations, manifolds and separators
- Structural and piping fabrication to ASME and API codes
- Asset-integrity and corrosion management; protective coatings and NDT
- Shutdown and turnaround (TAR) support and maintenance
Category 03
Production & Laboratory
Production Chemicals
Protecting production and assuring flow with the right chemistry.
- Corrosion and scale inhibitors, demulsifiers, biocides and H2S scavengers
- Paraffin/asphaltene and flow-assurance chemicals
- Chemical management programmes, dosing optimisation and residual monitoring
- Laboratory selection and compatibility testing
Laboratory Services
Accurate data for better decisions.
- Drilling-fluid and completion-brine testing
- Production-chemical selection and compatibility studies
- Water, corrosion and scale analysis; environmental sampling and analysis
- QA/QC and method documentation (ISO/IEC 17025 as a stated target)
Category 04
Environment & People
Environmental Engineering — Methane LDAR & MRV
Helping operators cut emissions and meet Nigeria's methane and decarbonisation targets.
- Leak Detection and Repair (LDAR) using optical gas imaging and sensors
- Methane quantification and Measurement, Reporting & Verification (MRV)
- Flare and vent assessment; emissions inventories aligned to OGMP 2.0
- Support for compliance with NUPRC methane regulations
Manpower Supply
Competent, HSE-assured personnel — locally developed.
- Technical and non-technical personnel across drilling, engineering, HSE and operations
- Competency assessment and HSE/offshore training (BOSIET/FOET/HUET)
- Payroll, HR and statutory compliance; secondment and managed-service models
- Nigerian Content human-capital development plan
HSE, Quality & Nigerian Content
NEXA is committed to a goal of zero harm to people and the environment, to delivering quality that meets international standards, and to building Nigerian capacity. We operate to ISO 9001 / 14001 / 45001 standards, comply with NUPRC and NCDMB requirements, and embed Nigerian Content and human-capital development into every project.