RE: WNA-2 Update15 Nov 2019 13:52
PDSMP,
Thanks for the notes you posted yesterday regarding the WN community meeting last month. They're interesting. This bit I find particularly so, from a technical viewpoint TS explained that wellbore fluids were recovered at the surface with associated gas but there was not enough energy in the reservoir to recover any reservoir fluids to surface, but that fluids were tagged someway up the wellbore. TS explained that in order to recover the fluids effectively from the wellbore, the team will need to install a suitable pump. He said that because the Environmental Agency permit did not provide for the installation of a pump, a decision was taken to temporarily suspend the operations so that the team could arrange to go back to the Environment Agency with a revised solution. "
The point being, it doesn't entirely make sense, in strict oilfield engineering terms. OK, the 'notes' were probably compiled by a non-oilfield person, maybe paraphrasing what TS actually said, but other bits confuse me as well,
For starters, if TS actually said there 'wasn't enough energy... etc.' either he was really 'talking down' to the attendees, or it wasn't what he said at all. In effect, it's blindingly implied that it's a 'low pressure' formation, which won't flow oil naturally without assistance, such as an ESP (electric submersible pump). This isn't necessarily bad news, but it ain't great, neither.
But if they want to install an ESP, I don't see what that's got anything to do with the Environment Agency. An ESP is a downhole tool, run as part of the completion string. On surface, the only additional equipment required would be a small electrical control panel, and if necessary a generator., if electrical power isn't available onsite from the national grid. These things are small, compared to the rest of the well test gubbins. I would understand the EE maybe getting involved if the plan were to install a surface 'nodding donkey' pump, but this obviously isn't the case.
In terms of government agency involvement, I can understand that Rathlin may have to run the detail for an ESP completion past the OGA, as a modification to their overall well-planning, but OGA aren't sluggards, and anyway it'd only be a 'detail' modification, and a lot easier (and longterm cheaper) than keeping nitrogen-lift equipment in place .
What I CAN understand is that there can be delays regarding getting a suitable storage tank and tanker-loading facility to handle the oil designed and installed, and that WOULD come under Environment Agency regulations and scrutiny. It's something that's been mentioned before (and discussed here, as well). But strangely, that doesn't get a mention in the notes of that meeting. There's something that doesn't quite 'click' here for me. I rather wish we could get some more 'concrete' news out of Rathlin themselves, or at least have it passed on verbatim, because despite their many qualities, S & S aren't oilfield engineers.