Welltec | Subsea

Subsea applications

With a constantly growing number of subsea installations there is a corresponding requirement for interventions.

A gap in recovery from subsea fields

Examples from certain areas show that there exists a gap of 30-40% in recovery from subsea fields compared to similar platform-based fields.

The discrepancy to a large degree can be attributed to lack of regular downhole production maintenance - basically lack of interventions. Welltec^® is a key provider of the technology required to boost subsea recovery.

Deployment options

Traditionally, semi-submersibles have been used to perform interventions on subsea wells using a riser based system. However, this method can be time consuming, expensive and requiring long lead times for both rig and riser system.

Almost two decades ago a true breakthrough came with the courage to run e-line through open water to intervene in a subsea well, also referred to as Riserless Light Well Intervention – RLWI.

Riserless Light Well Intervention – RLWI

Capitalizing on existing, more readily available equipment to accomplish interventions, RLWI can be accomplished with purpose-built vessels or a vessel of opportunity. No rig nor riser is required.

By far most interventions can be performed by wireline with applications covering from conventional e-line conveyed logging, perforation etc. to mechanical manipulation, obstruction removal to spotting chemicals or other fluids.

Riser conveyed intervention is only required for complete workover where tubing is retrieved and/or where the application is to pump major amounts of fluid.

Boost your subsea recovery

Features

Inherently safer
Less equipment, fewer people
No need for a rig
E-line operations
Flexible
Universal
Reliable

Benefits

Fewer lifts, clear roles and responsibilities
Reduced footprint, higher sustainability
Required vessels are available
Fast, efficient
Can work in any water depth
Global experience and suppliers
Proven track record of successes

Applications

Crown plug pulling
Scale and metal milling, sand/debris clean-out
Nipple profile milling
Fishing, plug milling and retrieval
Zone isolation (plug/straddle), fluid treatment placement
Mechanical pipe cutting and punching

Products & services

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Cases that cover the challenge

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Which solution is right for you?

Well completions & interventions are critical for optimizing production and maximizing well productivity. At Welltec, our team of specialists excel in navigating the complexities of any well, onshore, offshore, or subsea.

Reach out today and explore which solution can help you meet your specific goals.

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Optimizing recovery

From pioneering wireline interventions in horizontal wells, to our ever-expanding range of custom-made solutions, we strive to simplify complex interventions into more standardized operations.