Confirm the instrument-truck supply boundary
Define the selected tools, line and deployment method, depth and load basis, acquisition channels and required output records for the actual well program. The proposed truck configuration should identify its carrier, installed deployment equipment, operator workspace and power arrangement. Ask the supplier to list supported interfaces and limitations instead of assuming universal instrument compatibility from the product name.
External wellhead and pressure-control equipment require their own competent selection and acceptance. Surface separators, flow meters and effluent handling are separate package responsibilities unless explicitly included in the accepted offer. Any required data connection to those systems needs an identified interface and verification plan. Retain that boundary with the purchase, factory evidence and site handover records.
Evaluate engineering evidence before marketing claims
A capable oilfield well test truck manufacturer should turn your duty data into calculations, drawings, component selections and a clear list of assumptions. Ask the bidder to explain how the proposed package supports the accepted instrument deployment and measurement assignment and how it is derated for the destination climate. Generic brochures are useful for orientation, but they are not a substitute for a project-specific technical proposal.
Review experience with comparable applications rather than counting unrelated installations. Useful references state the process duty, operating environment, delivery scope and year. Protect confidential end-user information, but request enough evidence to establish that the supplier understands the equipment and its interfaces.
Factory and quality-system checks
Design control
Check calculations, drawings, revisions and approval responsibilities.
Material traceability
Verify certificates, heat numbers and records for pressure-retaining or critical parts.
Assembly inspection
Use inspection checkpoints for alignment, cleanliness, torque and piping quality.
Functional testing
Agree no-load, load-simulation, alarm, shutdown and leak tests.
For the major assemblies—identified deployment and line-handling equipment, selected instruments and measurement interfaces, data logging system, documented onboard control functions—ask who manufactures each item, who owns the technical selection and how warranty support is coordinated. The integrator must remain accountable for the performance of the complete package.
Define the factory acceptance test in the purchase order
| FAT stage | Minimum coverage | Buyer action |
|---|---|---|
| Document review | Approved drawings, data sheets, certificates and software list | Before physical test |
| Mechanical inspection | Dimensions, access, guards, labels, piping and workmanship | Record punch items |
| Functional test | Start, stop, controls, alarms, interlocks and emergency shutdown | Witness critical sequences |
| Performance evidence | Pressure, flow, temperature, power or separation duty as applicable | State test method and tolerance |
If full-load testing is impractical at the factory, agree an alternative: component test certificates, calibrated simulation, partial-load testing and a site performance test. Acceptance criteria must be measurable, not phrases such as “runs normally.”
Documentation and support that reduce startup risk
- General arrangement, foundation and connection drawings
- Process, electrical, hydraulic and pneumatic schematics
- Operation, maintenance and troubleshooting manuals
- Parts list with manufacturer and model references
- Inspection records, calibration certificates and test reports
- Remote support, training, commissioning and warranty process
A reliable manufacturer discusses exclusions and unknowns early. Use a technical bid evaluation table to score compliance, deviations, evidence and lifecycle support before commercial negotiation.
Connect the instrument program to the purchased configuration
Identify the actual tools, supported line and deployment arrangement, measurement quantities and output records. Compare the relevant supplier evidence at the accepted working cases, with depth and load limits distinguished from acquisition and software capability. The available channel count does not prove tool compatibility or the performance of separately supplied surface equipment.
Retain the installed equipment register, interface schedule, verification scope and open conditions with the purchase. Keep wellhead and pressure-control responsibilities separately reviewed. Use the actual configuration and manufacturer documents for commissioning and maintenance, rather than extend a reference photograph or an earlier test to every future assignment.
For broader industry context, consult OSHA oil and gas extraction safety guidance. Project requirements and applicable codes must still be confirmed for the destination country and end user.
Frequently asked questions
What should a qualified oilfield well test truck manufacturer provide?
Expect project calculations, drawings, component data, a deviation list, quality records, an agreed factory test and complete operation and maintenance documents.
Is a factory acceptance test necessary?
Yes. The FAT verifies workmanship, controls, alarms and agreed performance evidence before shipping, when corrections are easier and less expensive.