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Iain might be overly conservative stating the kingia was exposed to mud for 4 weeks. I think the cement that made it into the annulus was possibly much more than the ‘minimal’ amount as originally announced on 22/9 (see below) and possibly original job cement extended from bottom all the way up to 900m below the surface.
https://hotcopper.com.au/posts/56952344/single
Announcement to ASX
LOCKYER DEEP-1 OPERATIONAL UPDATE
27 September 2021
ng operations at the Lockyer Deep-1 conventional gas discovery well.
Further to the Company's announcement of 22 September 2021, the 5-1/2" production casing was run from surface to Total Depth. During casing cementing operations the cement was not displaced into the annulus, due to a suspected wiper plug held up in the casing hanger. This has resulted in the cement remaining within the 5-1/2” production casing, with only minimal cement in the production annulus. The cement wiper plugs and cement are currently being milled out to attain well access and re-cement the production casing for future completion and production testing.
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