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OTC Technology Review: Expro

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Oilfield Technology,

The Offshore Technology Conference (OTC), held each year in Houston, Texas, US, is one of the world's leading upstream oil and gas events. Before OTC 2020 was cancelled due to the COVID-19 pandemic, Oilfield Technology contacted a range of key players in the upstream industry and asked for their insight on the latest technologies that were due to be showcased at this year's OTC.

In this submission, Expro provide an overview of their latest annulus intervention systems. 

Expro has developed CoilHose, a light well circulation system (LWCS), which minimises the loss of hydrocarbon production and lowers the overall cost of intervention. The compact system is rapidly deployed, saving both time and cost over standard coil tubing operations. It delivers a suite of wire deployed intervention options for cased-hole application, digital and standard well configuration tooling and heavy duty fishing.

In addition to the intervention of the main wellbore, Expro now has the ability to enter and intervene the annuli. With casing integrity issues (i.e. pressure in the annulus) a growing concern due to the stock of ageing wells, annulus intervention solutions are helping to address well integrity challenges.

WellSpring, an annulus intervention system, offers minimally intrusive equipment allowing the wellhead remediation of annular integrity issues without the use of a heavy workover rig, resulting in significantly reduced cost. This system, which can be rapidly mobilised, helps operators increase recovery through the revitalisations of shut-in wells, making it economically profitable.

The creation of these new conveyance technologies combines all the best aspects of wireline and coiled tubing in a versatile and cost-effective service to create a solution with low operational resource requirements. It helps support the broader drive towards enhanced and improved intervention innovation within the oil and gas industry, assisting in maximising the value from existing reserves and ensuring their safe abandonment when the time comes.

After expanding its subsea intervention capabilities in the second half of 2019, the company will also focus on its two new well access solutions. The Intervention Riser System (IRS) is designed to help safely establish and maintain well access throughout riser to surface operations, replicating the functionality of the blow-out preventer and providing a reliable means of well control, connected directly to the production tree. With increased coil tubing cutting and disconnect capability, the IRS provides an alternative dual barrier, through-tubing system.

The riserless well intervention (RWI) system provides a field-proven, established and reliable wire through-water integrated solution for carrying out cost-effective intervention and/or abandonment operations on all types of subsea wells. With a dedicated intervention vessel, all operating, deployment and retrieval efficiencies can be delivered safely and efficiently to clients.

Figure 1. Riserless well intervention system.

Expro’s latest addition to the subsea test tree assembly (SSTTA) is a landing string designed to fully comply with all aspects of the industry’s new API17G standard. It features a range of new functionality across its 7 3/8 valves, including high debris tolerant ball mechanism and hydraulic latch mechanism, and dual seal protection to both environment and control systems.

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