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the coil, surface injector, and the controls for both systems. light-weight intervention and ultra-light-weight intervention

The nominal operational range for the system will be 2000 through the life cycle. That’s after investing in a global feet of ft - 10,000 ft water depth. 10,000 psi and soon to arrive 15,000 psi fuid skids that can be “There are no current riserless live well coiled tubing op- deployed from feld support vessels to inject high-fow chemi- tions in the marketplace,” says Still. cals into vertical and horizontal trees to boost production. “Our OWCT brings the advantages and capabilities of In mechanical intervention from rigs, Baker has increased coiled tubing to an otherwise LWI spread. OWCT can be its offering in the completion work over riser and subsea test used as needed in conjunction with wireline, whether planned tree space, adding to its rental feet. or contingency for live well operations.” Baker also acquired Wild Well Control LWI system stacks

Oceaneering’s aim is to deploy the OWCT from suitable and put them straight to work on a six-well campaign. vessels of opportunity, offering 40% less footprint, reduced “Add these to the existing feet in Well Access, Baker Hughes crew size (up to 60%), almost eliminating pre-engineering now has around 30% of the global light well capacity,” says needs, and lowering total cost. Roemmele. “Add the multi-WOCS (workover control system) capability and add our Well Services (wireline, chemicals, coil

Building tracking record and tubing, pressure pumping, and our reservoir expertise), and it’s a truly incorporated service offering.” vessel hunting

Expro has been increasing its weight in LWI. It last year acquired Norwegian coiled tubing, including open water coil hose, intervention frm Quality Intervention, and has launched a new intervention riser system (IRS) and a new riserless well intervention system (RWIS).

In the UK, since the Oil & Gas Authority’s (OGA) 2018 Wells

Insight report highlighted low rates of well intervention activity

The IRS had been deployed on an estimated 360-day P&A as an issue (see OE: August 2019), 50% of operators have campaign from Pacifc Drilling’s Pacifc Santa Ana drillship reported an increase in well surveillance activity, says Brenda for Petronas in Mauritania, when the Malaysian oil frm in

Wyllie, the OGA’s Northern North Sea and West of Shetland

March declared force majeure on the rig contract. According

Area Manager and now also co-chair of a new MER (Maximizing to Expro, the Santa Ana is stacked in Las Palmas due to the

Economic Recovery) UK Wells Task Force. There’s also been a 20% increase in intervention spend, across surveillance current Covid pandemic, however the base plan is to proceed and intervention activity, year on year (2018-2019). Reported back to Mauritania and recommence the P&A programme production losses from wells also decreased for the second when safe to do so, targeting early 2021.

year in a row. However, there’s still 30% of active well stock

To date, the IRS has been used on nine of the 15 wells in shut in or mechanically plugged – an issue raised by the 2018 the program of 15 wells, recovering three subsea Xmas trees

Wells Insight, and activity has dropped this year, due to Covid and low oil prices. on the bottom of the IRS system and “bunny hopping” be-

The new Wells Task Force has been set up to address issues tween the remaining six wells to perform intervention services around well activity and performance on the UK Continental

Expro had also announced an alliance with COOEC Off-

Shelf. Within this group, fve working groups are being set up shore to bring the RWIS to market from a newbuild ves- to looking at: reservoir and wells optimisation; right scoping; sel, however that partnership is no longer in place, and an waste removal, seeking to reducing non-productive time and mechanical side-tracks; improved partnerships, to get, amongst alternative vessel, as yet unnamed, will be used. The RWIS other things, multi-operator campaigns; and decommissioning. is currently being built, with fnal assembly and testing due

The OGA is also now sharing wells related data and insights in at Expro’s Aberdeen facility before mobilization to Asia for the form of an online dashboard, says Wyllie, and an updated vessel integration and testing ahead, with a frst intervention

Wells Insight report is expected later this year. campaign in Q2 2021, says Kevin Illingworth, Subsea Global

Another initiative, Oil & Gas UK’s Unlocking Brownfeld

Resource Opportunities Guidelines, published in May, also

Sales Director, Expro.

touches on well intervention. Katy Heidenreich, the body’s

Operations Director, says there’s a clear opportunity to

Building a broad spread, increase the number of well interventions and unlock more vertically and horizontally barrels. Some of the issues holding up this work include how companies prioritise well intervention, among other operational

Baker Hughes has also been fexing its muscle. Roemmele demands, she adds.

says the frm now has about 30% of the market capacity in intervention equipment focusing on large bore capacity with

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