Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
Factpages Norwegian Offshore Directorate
sodir.no    Norsk
sodir.no          Norsk
19.06.2025 - 08:35
Time of last synchronization with Norwegian Offshore Directorate's internal systems

CO2 STORAGE — Attribute descriptions

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  • Licences — General information
    Licences — General information
    Heading
    Description
    Tag
    Data type
    NPDID Bsns. Arr. Area
    Norwegian Offshore Directorate's unique id for business arrangement areas
    baaNpdidBsnsArrArea
    int
    Name
    The business arrangement area's official name.
    baaName
    varchar(40)
    Kind
    Kind of business arrangement area. Example of legal values: PARCELL, SEISMIC AREA, SLIDING SCALE, UNITIZED, EXPLOITATION LICENCE, EXPLORATION LICENCE
    baaKind
    varchar(40)
    Date approved
    The date the agreement for the business arrangement area was approved by the Norwegian authorities.
    baaDateApproved
    datetime
    Date valid from
    The date the agreement for the business arrangement area is valid from, according to the approval of the Norwegian authorities.
    baaDateValidFrom
    datetime
    Date valid to
    The date the agreement for the business arrangement area is valid to, according to the approval of the Norwegian authorities.
    baaDateValidTo
    datetime
    Active
    Indicator which tells if the business arrangement area currently is active.
    baaActive
    varchar(1)
    Fact page
    URL to the business arrangement area's FactPage on the Norwegian Offshore Directorate's FactWEB
    baaFactPageUrl
    varchar(200)
    Factmaps
    URL to the business arrangement area's FactMap on the Norwegian Offshore Directorate's FactWEB
    baaFactMapUrl
    varchar(200)

  • Licences — Licencees
    Licences — Licencees
    Heading
    Description
    Tag
    Data type
    Company longname
    The company's official name.
    cmpLongName
    varchar(100)
    Date valid from
    The date the company's interest in the business arrangement area is valid from
    baaLicenseeDateValidFrom
    datetime
    Interest [%]
    The company's share in percent.
    baaLicenseeInterest
    decimal

  • Licences — Operators
    Licences — Operators
    Heading
    Description
    Tag
    Data type
    Company longname
    The company's official name.
    cmpLongName
    varchar(100)

  • Licences — Areas
    Licences — Areas
    Heading
    Description
    Tag
    Data type
    Date valid from
    The date the polygon area is valid from
    baaAreaPolyDateValidFrom
    datetime
    Licence
    Name of the production licence (petroleum) or exploration/exploitation licence (CO2 Storage)
    prlName
    varchar(40)
    Nation code
    2 letter nation code (ISO) for the nation the polygon belongs to
    baaAreaPolyNationCode2
    varchar(2)
    Block name
    Block name
    baaAreaPolyBlockName
    varchar(40)
    Polygon area [km2]
    Polygon area in square kilometers
    baaAreaPolyArea
    decimal

  • Wellbore — General information
    Wellbore — General information
    Heading
    Description
    Tag
    Data type
    Wellbore name
    Official name of wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbWellboreName
    varchar(40)
    NPDID wellbore
    Norwegian Offshore Directorate's unique id for the wellbore.
    wlbNpdidWellbore
    int
    Well name
    Official name of the parent well for the wellbore based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbWell
    varchar(40)
    Drilling operator
    Name of the licensee starting the drilling operation on behalf of the active production license. This is usually the operator of the production license.
    wlbDrillingOperator
    varchar(60)
    Purpose
    Final classification of the wellbore.

    Legal values for exploration wellbores:
    WILDCAT, APPRAISAL, WILDCAT-CCS, APPRAISAL-CCS.

    Legal values for development wellbores:
    OBSERVATION, PRODUCTION, INJECTION, INJECTION-CCS, OBSERVATION-CCS.

    Legal values for other wellbores:
    SOIL DRILLING (drilling in connection with track surveys and other subsurface surveys to investigate the soil conditions prior to placement of facilities),
    SHALLOW GAS (drilling to investigate shallow gas before the first 'real' drilling on the location),
    PILOT (drilling to investigate the geology and fluid connectors for location of the main wellbore),
    SCIENTIFIC (drilling according to Law of Scientific research and exploration),
    STRATIGRAPHIC (driling according to Law of Petroleum activities §2-1).
    wlbPurpose
    varchar(40)
    Status
    Status for the wellbore. Legal values are:

    BLOWOUT: A blowout has occurred in the well.
    CLOSED: A development wellbore that has been closed in a shorter or longer periode. Also applies to development wellbores where drilling is completed, but production/injection has not yet been reported.
    DRILLING: The well is in the drilling phase - can be active drilling, logging, testing or plugging,
    JUNKED: The drilling operation has been terminated due to technical problems.
    P&A: Exploration: The well is plugged and abandoned, and can not be reentered for further use. Development wells: The production/injection from/to the well is stopped and the well is plugged. The wellhead is removed or else made unavailable for further well operations.
    PLUGGED: The wellbore has been plugged, but the upper parts of the wellbore can be re-used. A sidetrack might be drilled at a later stage.
    PRODUCING: It was produced from the wellbore at the time of the operators last monthly report to the Norwegian Offshore Directorate.
    INJECTING: It was injected to the wellbore at the time of the operators last monthly report to the Norwegian Offshore Directorate.
    PREDRILLED: The upper part of the well has been drilled, usually as part of a top-hole drilling campaign covering several wellbores.
    RE-CLASS TO DEV: Exploration wellbore that is reclassified to a development wellbore and given a new name.
    RE-CLASS TO TEST: Exploration wellbore that is reclassified to test production and given a new name.
    SUSPENDED: The drilling operation in the wellbore has been temporarily stopped. The current plan is to continue drilling later on.
    WILL NEVER BE DRILLED: Wellbore registered with a name and WellID by the Norwegian Offshore Directorate, but which for various reasons will not be drilled.
    ONLINE/OPERATIONAL: The wellbore is ongoing, but not completed, may be operations such as drilling, batch-drilling, logging, testing, plugging, preparation for production/injection or temporarily stopped in connection with the operations.
    wlbStatus
    varchar(40)
    Content
    For exploration wellbores, status of discovery.

    Legal values:
    DRY, SHOWS (trace amounts of hydrocarbons), GAS, GAS/CONDENSATE, OIL or OIL/GAS.
    SHOWS (GAS SHOWS, OIL SHOWS or OIL/GAS SHOWS) are detected as fluorescent cut (organic extract), petroleum odour, or visual stain on cuttings or cores, or as increased gas reading on the mud-loggers gas detection equipment.
    Legal values for WILDCAT-CCS and APPRAISAL-CCS: WATER

    For development wellbores, type of produced/injected fluid.
    Legal values:
    WATER, CUTTINGS, NOT AVAILABLE, OIL, GAS/CONDENSATE, OIL/GAS, CO2, GAS, WATER/GAS, NOT APPLICABLE.
    wlbContent
    varchar(40)
    Type
    Wellbore type. Legal values: EXPLORATION, DEVELOPMENT, OTHER (see 'Purpose' for more information)
    wlbWellType
    varchar(20)
    Entered date
    The date when he wellbore was spudded. For sidetracks: The date when new formation was drilled by kicking off from the mother-wellbore,
    wlbEntryDate
    datetime
    Completed date
    Exploration wellbores from moveable facilities:
    For floating facilities - date when anchor handling is started. For jackups - date the jacking-down started.
    Exploration wellbores from fixed facilities and all development wellbores:
    Date when the wellbore is at total depth, and last casing, liner or screen is set. In case of immediate plugging of the wellbore, completed date equals the date the last plug i set in the wellbore.
    wlbCompletionDate
    datetime
    Drill permit
    The drilling permit number together with the version of the drilling permit as stated in the drilling permit granted by the Norwegian Offshore Directorate.
    wlbDrillPermit
    varchar(10)
    Discovery wellbore
    Indicator which tells if the wellbore made a new discovery. Legal values: YES, NO. Prior to press-release or other information regarding drilling results, the indicator will be “NO” as a default.
    wlbDiscoveryWellbore
    varchar(3)
    Bottom hole temperature [°C]
    Estimated temperature at final total depth of the wellbore. Shown only for released wells. See discription.
    wlbBottomHoleTemperature
    int
    Seismic location
    Position of spud location on seismic survey lines. SP: shotpoint.
    wlbSeismicLocation
    varchar(200)
    Maximum inclination [°]
    Maximum deviation, in degrees, from a vertical well path.Shown only for released wells.
    wlbMaxInclation
    real
    Kelly bushing elevation [m]
    Elevation of the rotary kelly bushing (RKB) above mean sea level.
    wlbKellyBushElevation
    numeric
    Kick off point [m RKB]
    Depth (in mMD) where a new wellbore is kicked-off from the previous wellbore towards a new geological target. Kick-off depth is defined by the depth at which cutting samples shows more than 50% of new formation when drilling out of a casing, plug or kicking-off from the mother-wellbore. Other indications include measurements done near-bit.
    wlbKickOffPoint
    numeric
    Final vertical depth (TVD) [m RKB]
    Vertical elevation from total depth to kelly bushing. Shown only for released wells. Referred to as true vertical depth (TVD).
    wlbFinalVerticalDepth
    real
    Total depth (MD) [m RKB]
    Total measured length of wellbore from kelly bushing to total depth (driller's depth).
    wlbTotalDepth
    numeric
    Water depth [m]
    Depth in metres betweem mean sea level and sea floor.
    wlbWaterDepth
    numeric
    Oldest penetrated age
    Age (according to Geologic Time Scale 2004 by F. M. Gradstein, et al. (2004)) of the oldest penetrated formation. May differ from age at TD for example in deviated wellbores. Examples of legal values: CRETACEOUS, EARLY CRETACEOUS, LATE JURASSIC, EARLY PERMIAN, EARLY TRIASSIC, EOCENE.
    wlbAgeAtTd
    varchar(40)
    Oldest penetrated formation
    Name of the oldest lithostratigraphic unit penetrated by the wellbore. Shown only for released wells. In most wellbores this is formation or group at total depth. May differ from formation or group at TD for example in wellbores drilled with high deviation or through faults. Examples of legal values: AMUNDSEN FM, BALDER FM, BASEMENT, BLODØKS FM, BRYNE FM, BURTON FM, COOK FM, DRAKE FM, DRAUPNE FM, EKOFISK FM, DUNLIN GP.
    wlbFormationAtTd
    varchar(40)
    Main area
    Name of the area on the Norwegian Continental Shelf where the wellbore is located. Legal values: BARENTS SEA, NORWEGIAN SEA, NORTH SEA.
    wlbMainArea
    varchar(40)
    Drilling facility
    Norwegian Offshore Directorate's name of the facility which the wellbore was drilled from.
    wlbDrillingFacility
    varchar(50)
    Drilling facility type
    Kind of drilling facility. Example of legal values: CONCRETE STRUCTURE, CONDEEP 3 SHAFTS, CONDEEP 4 SHAFTS, CONDEEP MONOSHAFT, JACKET 12 LEGS, JACKET 4 LEGS, JACKET 6 LEGS, JACKET 8 LEGS, JACK-UP 3 LEGS, JACK-UP 4 LEGS, SEMISUB STEEL, TLP CONCRETE, TLP STEEL, VESSEL.
    wlbFacilityTypeDrilling
    varchar(40)
    Drilling facility category
    Indicates if a moveable or fixed facility drilled the well. Legal values ' FIXED' or 'MOVEABLE'
    wlbDrillingFacilityFixedOrMove
    varchar(10)
    Production facility
    The Norwegian Offshore Directorate's name for the production facility, for development wells.
    wlbProductionFacility
    varchar(50)
    Multilateral
    Indicator telling if the parent well is multilateral, meaning it has more than one branch radiating from the main borehole. Example of legal values: YES, NO. See also Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbMultilateral
    varchar(3)
    Purpose - planned
    Pre-drill purpose of the wellbore. Legal values for exploration wellbores: WILDCAT, APPRAISAL, WILDCAT-CCS, APPRAISAL-CCS. Example of legal values for development wellbores: OBSERVATION, PRODUCTION, INJECTION.
    wlbPurposePlanned
    varchar(40)
    Entry year
    The year when the drill bit penetrated the earth's crust / sea floor.
    wlbEntryYear
    int
    Completed year
    Exploration wellbores: For semi-subs etc: The year the anchor handling started. For jack-ups: The year the jacking-down started. For development wellbores: The year the last casing, liner or screen was installed.
    wlbCompletionYear
    int
    Reentry
    Status whether the wellbore has been re-entered (YES) or not (NO). Re-entered wellbores are not included in the count when wellbores are presented in statistical overviews.
    wlbReentry
    varchar(3)
    Predrilled entry date
    Date when the predrilling activity of the wellbore started (see also Entry date).
    wlbEntryPreDrillDate
    datetime
    Predrilled completion date
    Date when the predrilling activity of the wellbore was completed (see also completion date).
    wlbCompPreDrillDate
    datetime
    Release date
    Date when raw data which has been reported to the authorities from the wellbore is not confidential any longer. Normally 2 years after finishing the drilling. May be earlier if the area of the production license is relinquished.
    wlbReleasedDate
    datetime
    Plot symbol
    Norwegian Offshore Directorate's plot symbol number for wellbores.
    wlbPlotSymbol
    int
    Drilling days
    Number of days from wellbore entry to wellbore completion.
    wlbDrillingDays
    int
    Geodetic datum
    Reference system for coordinates. Example of legal values: ED50.
    wlbGeodeticDatum
    varchar(6)
    NS degrees
    Geographic coordinate of the wellhead, north-south degrees.
    wlbNsDeg
    int
    NS minutes
    Geographic coordinate of the wellhead, north-south minutes.
    wlbNsMin
    int
    NS seconds
    Geographic coordinate of the wellhead, north-south seconds (decimal number).
    wlbNsSec
    real
    NS code
    Indicator whcih tells if the coordinate of the wellhead is on the nothern or southern hemisphere. Legal values: N, S.
    wlbNsCode
    varchar(1)
    EW degrees
    Geographic coordinate of the wellhead, east-west degrees.
    wlbEwDeg
    int
    EW minutes
    Geographic coordinate of the wellhead, east-west minutes.
    wlbEwMin
    int
    EW seconds
    Geographic coordinate of the wellhead, east-west seconds (decimal number).
    wlbEwSec
    real
    EW code
    Indicator which tells if the coordinate of the wellhead is on the eastern or western hemisphere. Legal values: E, W.
    wlbEwCode
    varchar(1)
    NS decimal degrees
    Geographic coordinate of the wellhead, north-south, decimal degrees.
    wlbNsDecDeg
    decimal
    EW decimal degrees
    Geographic coordinate of the wellhead, east-west, decimal degrees.
    wlbEwDecDeg
    decimal
    NS UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, north-south.
    wlbNsUtm
    decimal
    EW UTM [m]
    Universal Transverse Mercator coordinate of the wellhead, east-west.
    wlbEwUtm
    decimal
    UTM zone
    Universal Transverse Mercator zone. Examples of legal values: 31, 32, 33, 34.
    wlbUtmZone
    int
    Wellbore name, part 1
    Part 1 of the wellbore name. Tells quadrant number on the Norwegian Continental Shelf the wellbore was drilled in. Based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbNamePart1
    int
    Wellbore name, part 2
    Part 2 of the wellbore name. Tells the block number the wellbore was drilled in. Based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbNamePart2
    int
    Wellbore name, part 3
    Part 3 of the wellbore name. Tells the name of the installation the wellbore was drilled from. Not used for exploration wellbores. Based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbNamePart3
    varchar(2)
    Wellbore name, part 4
    Part 4 of the wellbore name. Serial number for the wellbore. Based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbNamePart4
    int
    Wellbore name, part 5
    Part 5 of the wellbore name. Used to indicate exploration wells planned deviated (S), sidetracks (A, B,...), re-entries (R) or planned multilaterals (Y). Based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbNamePart5
    varchar(2)
    Wellbore name, part 6
    Part 6 of the wellbore name. Serial number of re-entries or serial number of the well tracks in multilatrals. Based on Norwegian Offshore Directorate guidelines for designation of wells and wellbores.
    wlbNamePart6
    varchar(2)
    FactPage url
    URL to the wellbores's FactPage on Norwegian Offshore Directorate's FactWEB.
    wlbFactPageUrl
    varchar(200)
    Factmaps
    URL to the wellbores's FactMap on Norwegian Offshore Directorate's FactWEB.
    wlbFactMapUrl
    varchar(200)
    Pressrelease url
    URL to Norwegian Offshore Directorate press release for the wellbore. Only relevant for exploration wells drilled after 1.1.1999.
    wlbPressReleaseUrl
    varchar(200)
    DISKOS Well Type
    Wellbore type - applicable for DISKOS.
    wlbDiskosWellboreType
    varchar(20)
    NPDID drilling facility
    Norwegian Offshore Directorate's unique id for the facility that has drilled the wellbore.
    fclNpdidFacilityDrilling
    int
    Publication date
    Date quality control of the wellbore information was completed, so it can be published on the internet as a 'Well Data Summary Sheet' wellbore with more information available than other wellbores.
    wlbWdssQcDate
    datetime
    Subsea
    Indicates if the well is completed on the seabed. Legal values are 'YES' or 'NO'.
    wlbSubSea
    varchar(3)
    Plugged date
    Date when plugging operations was finished, as reported by the operator to the Norwegian Offshore Directorate through DDRS (Daily Drilling Reporting System).
    wlbPluggedDate
    datetime
    Plugged and abondon date
    Date when the P&A-operations of the wellbore was finished, as reported by the operator to the Norwegian Offshore Directorate throught DDRS (Daily Drilling Reporting System). Only applied once pr. wellhead/surface location.
    wlbPluggedAbandonDate
    datetime
    NPDID site survey
    NPDID for the sitesurvey
    wlbNpdidSiteSurvey
    int
    Sitesurvey
    Name of the sitesurvey as reported to Norwegian Offshore Directorate in system for reporting sitesurveys, seismic and electromagnetic activities
    wlbSiteSurvey
    varchar(100)
    Date main level updated
    Date when information about this wellbore was last updated or inserted for the first time.The date will only be changed if the data in the 'Main level' in the tab 'Wellbore' will be changed.
    wlbDateUpdated
    datetime
    Date all updated
    Date when any information about this wellbore was last updated or inserted for the first time. The date also will bli change if some of the data in the 'Sub levels' in the tab 'Wellbore' will be changed.
    wlbDateUpdatedMax
    datetime

  • Wellbores — Wellbore history
    Wellbores — Wellbore history
    Heading
    Description
    Tag
    Data type
    History
    Short account of purpose, operations and results of the wellbore. The text is in html-format and is displays normally in an internet browser.
    wlbHistory
    varchar(-1)

  • Wellbores — Cuttings
    Wellbores — Cuttings
    Heading
    Description
    Tag
    Data type
    Cutting sample, top depth [m]
    Top depth of cutting sample [m].
    wlbCuttingTopDepth
    numeric
    Cutting samples, bottom depth [m]
    Bottom depth of cutting samples [m].
    wlbCuttingBottomDepth
    numeric
    Cuttings available for sampling?
    Indicator which tells if there are cuttings samples available at Norwegian Offshore Directorate.
    wlbCuttingSampleAvailable
    varchar(3)

  • Wellbores — Cores
    Wellbores — Cores
    Heading
    Description
    Tag
    Data type
    Core sample number
    Sequence number of the core sample in the wellbore.
    wlbCoreNumber
    int
    Total core sample length [m]
    Total length of core samples in the wellbore.
    wlbTotalCoreLength
    numeric
    Core sample - top depth
    Top depth of core sample.
    wlbCoreIntervalTop
    numeric
    Core sample - bottom depth
    Bottom depth of core sample.
    wlbCoreIntervalBottom
    numeric
    Core sample depth - uom
    Unit of measurement for core sample depth. Legal values: m, ft.
    wlbCoreIntervalUom
    varchar(6)
    Cores available for sampling?
    Indicator which tells if core samples are available at the Norwegian Offshore Directorate. Legal values: YES, NO.
    wlbCoreSampleAvailable
    varchar(3)

  • Wellbores — Casing and leak–off tests
    Wellbores — Casing and leak–off tests
    Heading
    Description
    Tag
    Data type
    Casing type
    A typical wellbore will be cased with CONDUCTOR and SURFACE CONDUCTOR types of casing in the upper section, INTERMEDIATE casing through non-reservoir sections, and a PRODUCTION or plastic LINER types of casing, or even OPEN HOLE, in potential reservoir sections towards final total depth of the wellbore.
    wlbCasingType
    varchar(10)
    Casing diam. [inch]
    Inner diameter of casing.
    wlbCasingDiameter
    varchar(6)
    Casing depth [m]
    Total depth below kelly bushing of a cased section (casing shoe).
    wlbCasingDepth
    decimal
    Hole diam. [inch]
    Diameter of wellbore (the drill bit).
    wlbHoleDiameter
    varchar(6)
    Hole depth[m]
    Total depth below kelly bushing of a wellbore section drilled with a certain diameter.
    wlbHoleDepth
    decimal
    LOT/FIT mud eqv. [g/cm3]
    Maximum mud equivalent at the leak-off test (LOT) or formation integrity test (FIT):
    A LOT measures the formation-integrity by increasing the pump pressure stepwise (thus increasing the equivalent mud density) to the point where the mud starts to leak into the formation.
    A FIT is similarily performed, but only up to a pre-decided pressure the formation has to withstand prior to expected Leak-off.
    wlbLotMudDencity
    decimal
    Formation test type
    Type of formation test. Example of legal values: LOT (Leak Off Test), FIT (Formation Integration Test)
    wlbFormationTestType
    varchar(10)

  • Wellbores — Drill stem tests
    Wellbores — Drill stem tests
    Heading
    Description
    Tag
    Data type
    Test number
    Usually assiciated with a specific test interval, but may also represent tests under different conditions from the same interval.
    wlbDstTestNumber
    decimal
    From depth MD [m]
    Top depth of the zone that is opened up for flow, measured depth.
    wlbDstFromDepth
    decimal
    To depth MD [m]
    Bottom depth of the zone that is opened up for flow, measured depth.
    wlbDstToDepth
    decimal
    Final shut-in pressure [MPa]
    Pressure as recorded at the wellhead when the valve is closed and the well is shut-in in the final build-up period.
    wlbDstFinShutInPress
    decimal
    Final flow pressure [MPa]
    The pressure determined at the formation face just prior to shut-in for a build-up test.
    wlbDstFinFlowPress
    decimal
    Bottom hole pressure [MPa]
    The downhole pressure opposite a formation of interest when the valves at the surface (or downhole) are completely closed. The pressure is transmitted by fluids which exist in a formation and are in communication with the wellbore.
    wlbDstBottomHolePress
    decimal
    Downhole temperature [°C]
    The downhole temperature opposite a formation of interest, typically measured as the final or maximum temperaure in the main flow period.
    wlbDstDownholeTemperatur
    int
    Oil [Sm3/day]
    The rate of oil produced from the formation.
    wlbDstOilProd
    int
    Gas [Sm3/day]
    The rate of gas produced from the formation.
    wlbDstGasProd
    int
    Oil density [g/cm3]
    Oil density.
    wlbDstOilDensity
    decimal
    Gas grav. rel.air
    Gas gravity relative to air. Air gravity is by definition = 1.0.
    wlbDstGasDensity
    decimal
    GOR [m3/m3]
    Gas to oil ratio.
    wlbDstGasOilRelation
    int

  • Wellbores — Logs
    Wellbores — Logs
    Heading
    Description
    Tag
    Data type
    Log type
    Assembly of log tools in a run. Abbreviations as reported from the companies.
    wlbLogType
    varchar(32)
    Log top depth [m]
    Intervals logged, top depth.
    wlbLogTopDepth
    decimal
    Log bottom depth [m]
    Intervals logged, bottom depth.
    wlbLogBottomDepth
    decimal

  • Wellbores — Lithostratigraphy
    Wellbores — Lithostratigraphy
    Heading
    Description
    Tag
    Data type
    Lithostrat. unit
    The lithostratigraphic unit's official name.
    lsuName
    varchar(20)
    Top depth [m]
    Measured length along the wellbore from kelly bushing to start of lithostratigraphic unit. Always the group/formation/member which the bit goes into. Note that in some situations, for example highly deviated wells, faults, drilling beyond salt walls, this might not be a true stratigraphic top. The start of a unit will be its stratigraphic base when drilled from underneath. In case of intercalating formations several top depths may occur for the same formation designating the top depths of the sub-packages. For some intervals in some wells only groups are interpreted and no formation tops have been assigned. Members have been assigned only near the type well area. In some cases informal names have been used for formations that are not described in the official nomenclature yet. These are marked with . Norwegian Offshore Directorate interpretations. May be subject to changes.
    lsuTopDepth
    numeric