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Plug-and-abandonment (P&A) operations can be expensive, leading to negative net present value. Historically, P&A operations in the North Sea—estimated to hold some 3,000 wells of declining production—were performed with either drilling or workover rigs. Larger-diameter coiled tubing recently has been used to perform millouts because of its improved set-down force and increased annular velocities for cleanout purposes. Service companies and operators have reduced the number of wiper trips when using larger-diameter CT, to save time and money.
A North Sea field development included installation of long 4½-in. To minimize overall risk, the operator planned to use managed-pressure drilling (MPD). This paper discusses an expandable-liner-hanger (ELH) system that provides liner rotation during the liner deployment and the cementing operation while providing a hydraulically energized liner-top seal upon setting.
The Troll field is one of the largest gas producers discovered off Norway, but ensuring its long-term future required finding ways to drill wells in an increasingly fragile formation to develop its rich oil reserves. Statoil, operating the Troll field in the Norwegian sector of the North Sea, wished to run a deep sidetrack from the main bore in a multilateral well that would exit through the liner in the reservoir.
Statoil To Become Equinor, Dropping'Oil' To Attract Young Talent Shareholders in Norway’s largest company, Statoil, approve the board’s proposal to drop “oil” from its name as its seeks to diversify its business and attract young talent concerned about fossil fuels’ impact on climate change. Norway’s Statoil on 24 April played down concerns that drilling in the Arctic is risky, days before it starts its drilling campaign in the Barents Sea, where the country believes around half of its remaining resources could be located.
The 2019 Global Award of the International Association for Impact Assessment was awarded to the Arctic Council, honoring the council’s promotion of sustainable development and environmental protection. Norway’s Statoil on 24 April played down concerns that drilling in the Arctic is risky, days before it starts its drilling campaign in the Barents Sea, where the country believes around half of its remaining resources could be located.
Greenpeace has been banned from carrying out climate protests on North Sea oil rigs after the oil giant Shell won a Scottish court order. Total is determined to push ahead with its plans to drill for oil in the Amazon basin, it said on 1 June as Greenpeace activists interrupted its annual general meeting in protest over the project.
A consortium of organizations has set out to tackle one of the more enduring challenges in the North Sea: the nondestructive testing (NDT) of corroded pipes under insulation and engineered temporary pipe wraps. General Electric has launched a subsidiary to develop and sell the use of flying, crawling, and swimming drones for inspections in the oil and gas industry, among others, the company announced.