Well integrity has a critical influence on efficient oilfield operations. As technology and innovation help extend the life of fields, we are here to make sure your assets continue to deliver safely and productively.

Unity is proud of its fast response times and innovative approach. We provide a complete and proactive solution to ensure well and wellhead integrity and have an extensive track record in supporting clients with their integrity management programmes.

Field Services

Employing a team of experienced engineers, Unity delivers a range of well and wellhead maintenance, integrity and engineering services direct to the well site anywhere in the world.

We maintain, service, repair, refurbish or replace wellhead and xmas tree equipment and deliver healthcare services for fluid levels and production valves, both onshore and offshore.

Always aiming to drive down cost and reduce the operational footprint of any project, we have the skills to quickly repair and repurpose existing equipment with minimum personnel on site. Highly skilled, but fewer personnel at the wellsite delivers lower risk and improved safety.

We can reuse and retrofit OEM components or use our own proprietary technology or rental equipment to add value and efficiency, reducing the time, cost, logistics and personnel which would alternatively be associated with major asset replacement.

Our maintenance programmes are supported by the rapid availability of Unity’s range of rental equipment and specialist technology, which has been developed for valuable production enhancement and integrity applications such as:

  • Surface Intervention System – a compact, mobile solution for shallow intervention applications such as plug setting, milling, well inspection or well clean out.
  • Annulus Lubrication and Filling (ALF) Tool - rapid filling, monitoring and leak detection.
  • Xmas Tree Components – best in class QV product range including valve spares and actuators.
  • Mechanical Sealing Solutions – enhanced tie-down bolts and sealing caps.
  • Conductor Integrity Range – wellhead and conductor clamps, cleaning and inspection tools.
  • Temporary Abandonment Cap Test Tool (TACTT) and preparatory P&A solutions.

Please visit our Technology page and Rental Assets page for further product details.

In-House Services

Under our maintenance contracts we are proactive in maintaining, repairing and refurbishing client assets and delivering a comprehensive management service which encompasses asset monitoring, storage and inventory.

Our large warehouse facilities employ experienced personnel, established systems and effective technology to ensure we are in control of the inventory and materials trusted upon us by our clients.

For equipment repairs which cannot be completed at the wellsite by our field technicians, they can be sent to our workshop for redress and recertification and returned to site quickly, as part of an accelerated service.

As part of this process we have acquired extensive experience working with all original manufacturers’ equipment over many years. Through such exposure we have developed our own range of best in class spare parts which can be used in place of OEM equipment. Our QV range is independently tested, verified and certified and offers significant time and cost savings to our clients.

Our xmas tree upgrade and repurposing service also uses our own range of QV parts to offer clients significant advantages. With our best in class components and actuators we can quickly and cost-effectively upgrade your xmas tree so it is independently certified to a higher operational specification and able to take on more demanding challenges.

Our fully equipped workshop allows us to provide the following as a minimum:

  • Maintenance, repair, refurbishment and repurposing of wellheads, xmas trees and associated components
  • Maintenance, repair, refurbishment and repurposing of well service and well intervention related equipment and associated components
  • Assembly, function testing and pressure testing of new wellheads and xmas trees
  • Wellhead and xmas tree stack-up testing and functioning
  • Disassembly, cleaning, inspection, measurement, servicing, reassembly and testing of equipment from the field
  • Valve and actuator repair
  • Gate and seat re-facing
  • Stem and actuator re-surfacing
  • Re-cladding of hard metal facing
  • Repair and refurbishment of wireline pressure control equipment
  • Maintenance and repair of high pressure pumps
  • Maintenance and repair of well control units/well services panels
  • Light sand blasting and painting
  • Degreasing and pressure washing
  • Certification and QA/QC inspection

We also provide in-house client training in wellhead familiarisation, well integrity and stinging competency.