HARDRÅDE FM
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General information
General information Attribute Value Lithostrat. unit The lithostratigraphic unit's official name.HARDRÅDE FMNPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.56Level 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
Level below Lithostrat. unit -
Description
Hardråde Formation
NameNamed after Harald "Hardråde" Sigurdsson, a Norwegian king (A.D. 1046-1066).Well type sectionNorwegian well 30/11-3 from 2892 m to 2601 m, coordinates N 60°02'38.59", E 02°32'15.47" (Fig 5.36) . No cores.Well reference sectionNorwegian well 31/6-2 from 978 m to 968 m, coordinates N 60°34'58.24", E 03°54'55.76" (Fig 5.37) . No cores.ThicknessThe formation is 291 m thick in the type well ( 30/11-3 ) and 10 m in well 31/6-2 . It is absent on tilted fault blocks in the Troll area (e.g. well 31/2-9 ).LithologyThe formation consists generally of interbedded limestones and mudstones, except in the Troll area where it is thin and consists of a single limestone bed. The limestones are white or pale, moderately hard to very hard. The mudstones are medium to light grey, often silty and calcareous.Basal stratotypeThe lower boundary is towards the Kyrre Formation or an unconformity above older rocks. The boundary towards the Kyrre Formation is identified by the absence of relatively thick limestone beds in this formation and a lower content of calcareous material in the mudstone. This results in a decrease in gamma-ray intensity and an increase in velocity from the Kyrre Formation into the Hardråde Formation (Fig 5.36) . The formation has an unconformable lower boundary in the Troll area.Characteristics of the upper boundaryThe upper boundary is towards the Rogaland Group . When it is towards the Lista Formation it is characterized by an upward increase in gamma-ray intensity and a distinct drop in velocity due to a transition from limestones to mudstones (Fig 5.36) . An upper boundary towards the Våle Formation lacks the distinct drop in velocity. This is due to the presence of limestones and a more marly facies in the Våle Formation . An upper boundary towards the Ty Formation is shown by a change to sandstone.DistributionAgeLate Campanian to Maastrichtian.Depositional environmentOpen marine.RemarksThe Hardråde Formation is time-equivalent with the Jorsalfare and Tor formations of the Shetland Group (Fig 5.6) .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 30.05.19742687279521.09.19732653274011.07.19742703274009.10.19742726279520.10.19752617292504.08.19762702299015.11.19772631293112.11.19882622285006.04.19892622285025.01.19902706303230.03.19912552284413.01.19932684282301.03.19932688282711.04.19932688282713.09.20012909313019.10.20162854313630.10.20162894324917.11.20162781307311.09.20162653288308.10.20172791305601.04.20222870311501.08.19872588280216.09.19872616295304.07.19892630285526.03.19902310234707.03.19912559276203.02.19862164219229.05.19922207223911.11.19992443247515.02.20122413276017.07.19872350258421.12.19962449247014.05.19832288237511.09.19862288237523.11.19852380240006.01.19992320233607.10.20012307243130.10.20012396240501.03.19952444247201.03.19962444247205.01.19982431245404.02.20092541281112.07.19832303242007.07.19862303242026.02.19842354257830.03.19852769304123.12.19882380261325.09.19892382262006.11.19892178229219.11.19902193228629.12.19902365249809.05.19912325252304.06.19912422263811.07.20022426264211.10.19912493279517.07.20022497279914.05.19932438268205.01.19942156224208.08.19942386258711.04.19952331244022.10.19982409241821.12.19982410244111.02.20022361258815.06.20082735283630.04.20082675277010.03.20092430267821.08.20092119220117.10.20092373261820.09.20132366261126.02.20162394264825.09.19923062325823.10.19923062325828.03.19742691275509.11.19922589283217.10.19922580261214.03.19832601289209.01.19972561283502.07.20042639284603.07.20112581294020.05.20112567294308.01.20142800313613.11.20132605288607.04.20163037340419.03.20162584283920.05.20162969334804.05.20162585286206.06.20162548276806.07.20162535274823.07.20163160343407.03.19942429254427.08.20192533280017.10.19811464147631.10.19821539155513.07.19962126225016.03.20211952201003.03.20211848188105.01.20141416150207.03.19872043209311.11.19831432144130.08.19841432144113.12.19901449146118.07.19911449146105.09.20031456146810.10.19901449146106.03.20201698174128.10.19831232123611.12.198396897808.09.198496897826.12.198380882321.05.19841144115729.07.19841018102525.05.19851256126422.09.19851256126422.06.20162085214314.07.20162275235527.07.20172488256808.07.20172094217718.01.20192642271216.12.20182461255925.07.20142348238821.09.201954258826.10.201955460327.01.19921845191029.09.199217351779 -
Wellbores with cores