How Subsea Well Intervention Services Can Minimize Downtime and Increase ROI

The good intervention aims to fix the problem and return production to normal. The process is complex and time-consuming, with each stage potentially disrupting operations or leading to lost production.

Integrity testing must be conducted efficiently to minimize delays and eliminate costly retests. This is why MPSVs and dedicated well-intervention vessels are becoming increasingly popular.

Increased Production

As exploration and production companies (E&Ps) look to meet the global call for energy, they focus on extending mature fields’ life and increasing recovery. These objectives drive the need for intervention services.

One of the ways to increase production is through healthy subsea well intervention. These operations involve a range of tasks such as cleaning sand, paraffin, and other debris from the inside of a good bore, pulling or setting plugs, and running sensors into a well to record bottom hole temperatures and pressures.

Dedicated good intervention vessel providers can offer cost-efficient solutions to support the operator’s goals. For instance, by leveraging the technology behind open-water hydraulic access (OWHA), companies can provide a much lower cost approach to intervention versus traditional riser-based techniques and RLWI.

In addition, OWHA offers significant time savings through a reduced vessel requirement, more straightforward equipment setup, and simplified port and duty costs. The result is operators can review their legacy preliminary budgets and, in many cases, achieve enhanced returns on investments with accelerated payback durations.

Decreased Downtime

As good subsea populations grow and aging oil and gas field infrastructures age, companies recognize the need for cost-efficient, highly skilled well-intervention services to reduce costs and maximize the return on their assets. However, organizational structures and incentives often need to be aligned to support the adoption of regular healthy interventions across global well-stocks.

Increasingly, operators are looking for price-efficient and reliable methods of performing well interventions like chemical treatment, repairs, measurements, plug zone isolation, etc. Vessels are more flexible in using rigless well intervention. They can perform various tasks like adjusting valves, installing new equipment or replacing parts, performing diagnostic operations on live wells, shutting off and abandoning flowing wells, and more. Currently, riserless light well interventions are available in shallow water, but cutting-edge innovations have also enabled them to function in deep and ultra-deep waters.

Increased Recovery

Despite a recent slowdown, the overall subsea healthy population is still growing. That means there will continue to be more and more need for well-intervention services.

Rigorous preplanning is crucial to achieving the most cost-effective solution for a particular well, mitigating unknown risks. While light and medium intervention operations can be carried out by vessels (which generally have lower day rates than drilling rigs), a drilling rig is typically needed for heavier work like redrilling.

The commercial model for offering intervention services must be rethought, especially regarding the smaller campaigns that require only “a few plugs or a look at a couple of wells.” A flexible package offering a full range of capabilities should be more appealing than the current “turnkey” model. A model that provides a vessel with saturation diving and other powers could be a great way to drive down costs and increase efficiency.

Increased ROI

The riserless healthy intervention (LWI) system is a significant advancement in the oilfield industry. It is an alternative to conventional workover rigs, which can be time-consuming and expensive to mobilize and demobilize. The LWI system transports a wireline system on board a vessel, saving on rig costs and allowing for quicker response times.

The LWI system can conduct various operations, including fishing services, casing exits, through-tubing interventions, and service tool logistics. It also provides a solution for marine multistage fracturing applications. Baker Hughes’ DEEPFRAC deep-water system reduces tool logistics and speeds up completions by allowing multiple stages to be stubbed at once.

As the offshore energy sector grows, companies must focus on reducing downtime and improving recovery rates. By implementing new strategies, such as LWI, and utilizing advanced technologies like “smart” wells, companies can improve the efficiency of their operations and minimize downtime. This will allow them to maximize ROI while minimizing risk.

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