Page 59: of Offshore Engineer Magazine (Apr/May 2013)

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Operations well as the water.”

Eyebrow

New facility opens marginal felds

Shell’s variety of southern North

Formation water in older felds taking calcium ions out as well as Sea assets, stretching from satellite may require investment to unlock sodium chloride. platforms to hubs and an onshore marginal felds. Shell’s facilities “Historically a lot more pro- terminal, ofer a number of solu- in the southern North Sea apply cessing was done ofshore,” said tions.

both ofshore solutions as well as Nibbelke. “For example, in the “One option, the ideal, it to onshore solutions, to manage the SEAL system feeding the Shell remove the salt at source,” said water and salt. Bacton plant all processing is done Nibbelke. “But this is not always

Now Rob Nibbelke, plant installa- ofshore. These days, new projects technically available to do in an tion manager for Shell at the Bacton tend to aim to minimize ofshore efective manner.” gas terminal, is working on what processing by transferring all well On some platforms the formation is within Shell globally the larg- fuids onshore. Examples are Ormen water can be reinjected or pumped est glycol desalination plant – and Lange, Pluto and Gorgon.” overboard if it meets regulatory likely the largest of its kind in the Formation water, and how it is approvals.

industry. dealt with, is an increasing problem “You could route the water to a

It is due to be up and running in in the basin. nodal (hub) platform and take it 2014 and will enable the start-up “It is an example of where we are out there, which we do at the Sean of a number of older felds, which challenged at the end of feld life, platform,” said Nibbelke. “Sean was had been shut in and in which Shell our operations can become more installed with a TEG deep dehydra- expects there to be formation water, difcult,” said Nibbelke. “Water can tion system from the start of its life. as well as giving Shell more fexibil- enter the well from the side or from You could also route water all the ity in how it deals with formation the bottom of the reservoir. “First of way to the gas plant and take the water in its business there. all it is hard to predict when it will water and salt out at that time. We

The new unit will be able to occur and by what amount and sec- are using all these options depend- remove 50 tons per week of salt. ond it is highly saline, which means ing on the constraints and circum-

It will also be a two-step process, you have a lot of salt to handle as stances.”

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