Wellhead and gathering station valve care

Record the service that reaches each valve

Upstream valves can see changing gas, liquid and solids as production conditions change. A valve record should describe current service, not only the original design basis.

Sand and debris can collect near sealing surfaces or mark seats during movement. Heat and pressure changes can also alter operating behaviour. These conditions justify inspection, but they do not prove a specific fault.

Connect service history, operating observations and tests within a valve integrity management programme.

Rank valves by the consequence of unavailable isolation

Wellhead and gathering valves perform different duties. Some control a single flow path, while others define a wider station or gathering boundary.

Criticality should consider the isolation function, service, access, operating method, fault history and strength of existing evidence. It should direct attention without removing any valve from the programme.

1. Identify what the valve must isolate and what alternative isolation exists.
2. Record access limits, operating method and the people needed for testing.
3. Review sand, debris, heat and prior intervention history.
4. Raise priority where travel, sealing or evidence quality has weakened.

Separate hard operation from seat passing

High operating effort may suggest fouling, dry seals, actuator problems or mechanical damage. It does not show that the seat is leaking.

Likewise, downstream pressure movement, flow indication and sound suggest possible passing. They remain screening evidence. Confirm seat condition with an approved test under a known arrangement.

Common causes include incomplete travel, stop settings, debris, damaged seats and instrument error. The passing-valve guide explains why diagnosis must remain open.

Plan field work around access and operating state

Remote or dispersed assets need a complete work pack before the field visit. Missing fittings, wrong adapters or unclear test boundaries can waste the available operating window.

1. Confirm valve identity, service, line state and approved test method.
2. Check access, communications, tools and verified equipment ratings.
3. Observe external condition before moving or connecting to the valve.
4. Record travel, stop position, pressure response and seat-test result.
5. Leave a clear status and next action for the operating team.

Our injection equipment overview explains why hose, coupler, adapter and pressure ratings must work as one system.

Gate any in-place treatment

Treating an installed valve can avoid immediate removal in suitable cases. It is not available for every design, fitting condition or upstream service.

Before recommending cleaner, lubricant or sealant, confirm that fittings are in good condition. Valve design and service must suit injection, OEM guidance must allow it, and operations must permit the work.

Use controlled amounts within equipment and fitting ratings while watching pressure response. Stop on unexpected response, no uptake or an approaching approved limit. Retest the original fault afterwards.

An improved response does not erase the defect history. Record the material, amount, pressure response, test result and monitoring need. The planned injected-seal management guide explains the handover to later repair.

Severe damage, unclear response or unavailable isolation needs a proper assessment. Our field services can support surveys and controlled work where the gates pass.