Euan,

Re UAE shutting down production for maintenance. See:

UAE forced to slash oil output by a quarter (Arabian Business, Sun 23 Sep)

http://www.arabianbusiness.com/index.php?option=com_content&view=article...

Article: Scheduled maintenance at three of the UAE's largest oilfields will cut oil output by 600,000 barrels per day (bpd) in November, the Abu Dhabi National Oil Company (Adnoc) said in a statement on Sunday.

Adnoc's statement confirmed work widely expected by the industry and reported by Reuters in August. At its peak, the maintenance would cut 810,000 bpd of output from the world's sixth-largest oil exporter, oil traders said last month.

The output reduction as detailed by Adnoc was about a quarter of the UAE's output. The Opec member produced about 2.56 million bpd in August, according to a Reuters survey.

Adnoc will also do work at the 415,000 bpd Ruwais refinery from December 22 to February 25, cutting crude processing by a total of 5 million barrels during the maintenance period, Adnoc said.

... ADNOC gave no details on the length of the oilfield maintenance. Industry sources said last month the work would last for two to three weeks and start in late October.

The state oil firm also gave no details on the units to undergo work at Ruwais, the UAE's largest refinery. An industry source in August said Adnoc's refining arm Takreer would undertake work on a crude distillation unit and a diesel-making hydrocracking unit, shutting in around 150,000 bpd.

Thanks Doug. It strikes me as being a bit odd. In the North Sea, production drops every year for maintenance. There is nothing like this before in the 2002 - 2007 record of UAE. I would have thought a rolling maintenance program would be more likely. Using the same crew, moving from one field to the next, all the while trying to maximise production. This is one to watch.

It's a pure WAG, but I wonder if they are having problems with saltwater/bacterial corrosion (as at Prudhoe Bay) and/or they are having to dramatically increase their ability to handle (and reinject) produced saltwater.

Same idea I had water handling would be a reason to have to shutdown most of the production. I'd guess it has to be something critical thats being upgraded.

My feeling is water handling facilities too. If this is off shore then it is basically water clean up and tip it over the side - but if they're producing more water - then they also need to inject more - and that's major engineering in the offshore environment.