Onshore Wellhead & Skid Control Systems

Distributed onshore assets demand controls that are maintainable in the field and visible from the operations centre. SMEC can engineer wellhead and skid controls around local operating logic, protective interfaces, telemetry and the realities of remote power and communications.

Local control — Wellhead/skid panels acquire pressures, temperatures, valve positions and equipment states while executing defined local sequences.

Remote connectivity — RTU/PLC interfaces can transmit alarms and operational data to a central SCADA system via site-approved telecoms.

Safety boundaries — Loss of communications must not defeat locally required protective functions.

Remote deployment — Power availability, solar/DC options, dust/heat exposure and field maintainability influence enclosure and hardware selection.

Wellhead control panels. Panel layout, ingress protection, segregation, component selection and service clearance follow the installation environment, load schedule and maintenance requirements.

PLC/RTU. An RTU acquires remote station measurements and status, timestamps events and exchanges authorised commands with SCADA while preserving local control on link loss.

Valve actuation interfaces. Valve actuation and position feedback must follow the approved process control and fail-safe philosophy, including loss-of-power behaviour.

Pressure/temperature/flow inputs. The pressure/temperature/flow inputs is selected for the equipment, operating duty and site conditions.

Pump/compressor skids. The pump/compressor skids is selected for the equipment, operating duty and site conditions.

Local HMI. The local hmi is selected for the equipment, operating duty and site conditions.

Remote alarms. Alarm thresholds, priorities, delays and operator actions must be documented to avoid nuisance alarms and missed critical events.

SCADA communications. SCADA consolidates remote station measurements, alarms, trends and supervisory commands; local protective functions remain in field controls.

Replace legacy RTUs or PLCs without disturbing essential local protection.

Add telemetry, event logging and remote diagnostics.

Extend instrumentation and skid integration for additional production equipment.

Retrofit scope depends on existing OEM interfaces, component condition, available space, shutdown windows and the approval basis of any safety-related functions.

Relevant IEC, ISO, API, classification-society, hazardous-area or functional-safety requirements must be selected according to the specific system and installation. Where applicable, the project package may include electrical drawings, GA layouts, datasheets, I/O schedules, cause-and-effect, communication lists, inspection records, FAT/SAT procedures, calibration records and as-built documents. No unverified compliance certification is claimed here.