Testing & Integrity
Pressure Testing Services
Precision pressure integrity testing of wellheads, pipelines, valves, and oilfield equipment — ensuring full regulatory compliance and protecting life and assets.
Service Overview
Precision Pressure Integrity Testing
Sequential International provides comprehensive pressure testing services for all categories of oilfield equipment. From pre-commissioning pipeline hydrostatic tests to post-maintenance wellhead pressure verification, our testing protocols meet API, NUPRC, and client specifications.
Our pressure test engineers carry full equipment inventories and certified test records — giving operators the confidence that every asset returned to service has been fully verified.
“Pressure testing is the last line of defence before equipment is returned to service — we take that responsibility seriously.”
What We Deliver
Scope of Work
Wellhead Pressure Testing
Post-maintenance function and pressure testing of all wellhead components to API 6A and customer specifications.
Hydrostatic Pipeline Testing
Full hydrostatic testing of new and existing pipelines to regulatory commissioning and integrity standards.
Valve & Fitting Testing
Seat, body, and back-seat pressure testing of gate valves, ball valves, and check valves.
BOP Testing
Regular function and pressure testing of blowout preventers per API 16A and operator requirements.
Chemical Line Testing
High-pressure testing of chemical injection lines and tubing to verify pre-deployment integrity.
Test Records & Certs
Fully traceable test records, charts, and certificates issued for every test — ready for regulatory submission.
How We Work
Our Service Process
Scope Review
Review of test specifications, equipment ratings, and regulatory requirements.
Equipment Prep
Test medium preparation, equipment rigging, isolation, and bleed-off verification.
Pressure Application
Controlled pressure build-up per approved test programme with real-time monitoring.
Records & Sign-Off
Test charts, pressure logs, and regulatory certificates issued upon completion.
Why Choose Us
Key Benefits
Regulatory Compliance
Test records prepared and formatted for NUPRC, DPR, and client compliance submissions.
Asset Protection
Identifies leaks and weakness before equipment is returned to live service — preventing failures.
Certified Equipment
Full test certification trail for every item tested, with traceable records.
Calibrated Instrumentation
All gauges and data loggers are calibrated and certified to international standards.
Experienced Test Engineers
Specialist test engineers with extensive oilfield pressure testing background.
Full Range of Pressures
Capability from low-pressure pneumatic tests to high-pressure hydrostatic tests up to 15,000 psi.
Pressure testing operations carry significant stored-energy risk. Sequential International follows a strict exclusion zone policy during all high-pressure tests, with full crew PPE, blast shields where required, and a dedicated test safety officer on every job.
Capabilities
Equipment & Capabilities
High-Pressure Pumps
Hydraulic test pumps rated to 15,000 psi with calibrated gauges and remote read-out.
Data Loggers
Electronic pressure and temperature data loggers providing real-time chart records for all tests.
Isolation Equipment
Full range of test plugs, blind flanges, and temporary closures for pipeline and wellhead isolation.
Test Medium Supply
On-site water supply and chemical dosing capability for inhibited hydrostatic test water.
Pneumatic Test Sets
Nitrogen test sets for low-pressure pneumatic leak testing where water use is not permitted.
Certificate Management
Digital test record management system for traceable, client-ready test documentation.
Schedule Your Pressure Testing Today
Our test engineers are ready to mobilise across the Niger Delta. Get in touch for a test programme proposal and commercial offer.