HERMOD FM
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General information
General information Attribute Value Lithostrat. unit The lithostratigraphic unit's official name.HERMOD FMNPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.64Level Indicates the lithostratigraphic unit's level. Legal values: GROUP, FORMATION, MEMBER.FORMATIONLithostrat. unit, parent The parent lithostratigraphic unit's official name. See also level. Will be empty if Level = GROUP. -
Level below
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Description
Hermod Formation
NameHermod was a son of Odin, and was known as "the quick one".Well type sectionNorwegian well 25/2-6 from 2361 m to 2221 m, coordinates N 59°45'33.55", E 02°33'05.96" (Fig 5.56) . No cores.Well reference sectionUK well 10/1-1A from 2212 m to 2127 m, coordinates N 59°50'10.50", E 02°00'33.60" (Fig 5.48) . No cores.ThicknessThe Hermod Formation is 140 m thick in the type well and 85 m thick in the reference well. It thickens towards the centre of its distribution area (Fig 5.47) .LithologyThe Hermod Formation consists of clean sandstones which are very fine to fine grained and clear to grey. The formation is to a limited extent interbedded with dark shales.Basal stratotypeThe lower boundary of the Hermod Formation is identified by a transition from the shales of the Lista Formation . This boundary essentially represents the boundary between the Lista and Sele formations, and the Hermod Formation may rest on shales of the Sele Formation . The log response in both cases is a sharp transition from the high gamma-ray readings and low velocity of the shales to the low and regular gamma-ray readings and higher velocity of the Hermod Formation sandstones (Fig 5.56) . Where the Hermod Formation rests directly on the Heimdal Formation the boundary may be indistinct, but the log response changes from an erratic pattern in the Heimdal Formation to a smoother one, reflecting the more homogeneous sandstones of the Hermod Formation.Characteristics of the upper boundaryThe Hermod Formation is overlain by the time-equivalent Sele Formation , and the boundary is an abrupt change from sandstones to dark shales. The gamma-ray response changes from low readings in the sandstones to significantly higher ones in the Sele Formation , and the velocity is lower in the Sele Formation (Fig 5.56) .DistributionThe Hermod Formation is found in the South Viking Graben, in the northwestern part of quadrant 25. It may also be found in other parts of the South Viking Graben. The main distribution area is outlined in (Fig 5.47) .AgeLate Paleocene.Depositional environmentThe Hermod Formation was deposited in submarine fan systems connected with the deltaic Moray Group in the west.Source-
Isaksen, D. and Tonstad, K. (eds.) 1989: A revised Cretaceous and Tertiary lithostratigraphic nomenclature for the Norwegian North Sea. NPD-Bulletin No. 5, 59 pp.
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Wellbores penetrating
Wellbores penetrating 06.07.19752215223905.01.19992266234710.12.19672316235524.12.20002196219724.12.20002207220825.08.19852079208315.04.19811981206026.01.19942049208226.01.19942098211207.03.19942119213715.10.20092861292125.10.20092925298307.10.20092202226820.02.20112799288102.02.20112211229908.02.20182094215016.07.20192166217814.09.20012139220704.11.20212124220122.07.19712195221822.07.19712228224525.08.19712108219027.01.19722289249226.05.19852290243914.02.19872290243910.05.19882287243616.04.19892287243605.04.19902287243625.07.19852329253214.04.19912326252906.04.19892326252918.02.19872329253215.05.19882326252912.10.19862402242014.05.20102318234926.04.20102244225321.09.19732188236011.07.19742269236309.10.19742274242720.10.19752250232504.08.19762238237415.11.19772221236112.11.19882300235006.04.19892300235025.01.19902240240030.03.19912211224230.03.19912259230413.01.19932208237701.03.19932212238111.04.19932212238119.10.20162327242630.10.20162321244817.11.20162308236611.09.20162240232608.10.20172380250401.04.20222376253210.11.20092671269819.09.20092240230911.11.19992083215515.02.20122071214118.07.19902216222221.06.19972018212130.08.19972044206114.10.20002069208209.11.20192204221209.01.20202031215315.02.20201932198004.07.19701754176317.04.19811753176705.06.19971725174102.12.19971765176802.12.19971774179609.06.19991785178809.06.19991789180228.05.20211980202513.06.20211981200710.05.20212023209616.10.19691730174503.08.19701730174503.08.19701756176213.09.19701808183717.07.19811831184810.02.20232277238009.07.19671794181724.09.19701780181720.11.19701792181608.05.19741731177107.12.19801782178307.12.19801789181829.05.19811769181718.05.19951891189318.05.19951897198506.05.19971891189306.05.19971897198528.05.19991796180428.05.19991808186410.03.20082074216726.04.20042040209309.10.20162122216609.11.19751947202509.11.19752048208825.10.19762187228001.07.19792217229101.07.19792313232014.01.19962076213818.07.19732202228918.07.19732340237428.03.19742189225631.08.19742188225501.05.19752214226201.05.19752310237109.11.19922256231817.10.19922183218617.10.19922191219317.10.19922202221217.10.19922218223217.10.19922236224414.03.19752218235414.03.19832205233024.07.19842199234509.01.19972222230603.02.20092208231925.05.20092208231908.01.20142376257513.11.20132260239526.12.20142272229613.02.20152282231707.04.20162552271119.03.20162251237406.07.20162247228023.07.20162700273025.07.20142172220714.07.199919481984 -
Wellbores with cores
Wellbores with cores 05.01.19992010.12.19672826.01.1994407.10.20095402.02.20115426.05.1985711.11.19992530.08.19971614.10.20001104.07.1970905.06.19971602.12.19971916.10.19691503.08.19703018.05.19954209.11.19751414.01.1996717.10.199212