6607/2-1

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• General information

  General information

  Attribute	Value
  Wellbore name	6607/2-1
  Type	EXPLORATION
  Purpose	WILDCAT
  Status	P&A
  Press release	link
  Factmaps in new window	link
  Main area	NORWEGIAN SEA
  Well name	6607/2-1
  Seismic location	3D VGUH-0201 line 5290 and trace 2250
  Production licence	329
  Drilling operator	Eni Norge AS
  Drill permit	1132-L
  Drilling facility	TRANSOCEAN LEADER
  Drilling days	46
  Entered date	09.02.2007
  Completed date	26.03.2007
  Release date	26.03.2009
  Publication date	26.03.2009
  Purpose - planned	WILDCAT
  Reentry	NO
  Content	DRY
  Discovery wellbore	NO
  Kelly bushing elevation [m]	23.0
  Water depth [m]	860.0
  Total depth (MD) [m RKB]	3526.0
  Final vertical depth (TVD) [m RKB]	3526.0
  Maximum inclination [°]	0.7
  Bottom hole temperature [°C]	93
  Oldest penetrated age	LATE CRETACEOUS
  Oldest penetrated formation	SPRINGAR FM
  Geodetic datum	ED50
  NS degrees	66° 49' 20.18'' N
  EW degrees	7° 22' 15.5'' E
  NS UTM [m]	7412692.49
  EW UTM [m]	428455.22
  UTM zone	32
  NPDID wellbore	5471

• Wellbore history

  General

  Well 6607/2-1 was drilled in the Någrid syncline between the Utgard high and the Nyk High in the Norwegian Sea. The main purpose of drilling the Cygnus 6607/2-1 Exploration well was to test the Palaeocene intervals for hydrocarbons. The primary target was the Thanetian turbidite sandstones, while the Danian turbidite sandstones were a secondary target.

  Operations and results

  Wildcat well 6607/2-1 was spudded with the semi-submersible installation Transocean Leader on 9 February 2007 and drilled to TD at 3526 m in the Late Cretaceous Springar Formation. The well was drilled with seawater/hi-vis sweeps/PAC down to 1425 m and with Ultradril water based mud from 1425 m to TD.

  The primary target Thanetian sandstones were encountered as an interbedded sandstone/siltstone/claystone interval between 1994 -2027 m. The interval is interpreted as a major Pliocene ? Eocene unconformity from 1994 to 2007 m with Early Eocene from 2007 to 2027 m. The secondary target, Danian turbidite sandstone, was not present. Shows were not recorded apart from poor shows in cuttings from a thin limestone bed at 3460 m in the Springar Formation.

  No cores were cut and no wire line fluid samples were taken.

  The well was permanently abandoned on 26 March 2007 as a dry well.

  Testing

  No drill stem test was performed.

• Cuttings at the NPD

  Cuttings at the NPD

  Cuttings available for sampling?	YES

  Cuttings at the NPD

  Cutting sample, top depth [m]	Cutting samples, bottom depth [m]
  1430.00	3526.00

• Lithostratigraphy

  Lithostratigraphy

  Top depth [m]	Lithostrat. unit
  883	NORDLAND GP
  883	NAUST FM
  1380	KAI FM
  1994	UNDEFINED GP
  2007	ROGALAND GP
  2007	TARE FM
  2080	TANG FM
  2876	SHETLAND GP
  2876	SPRINGAR FM

• Composite logs

  Composite logs

  Document name	Document format	Document size [KB]
  5471	pdf	0.45

• Logs

  Logs

  Log type	Log top depth [m]	Log bottom depth [m]
  EDTC MSIP HRLA GR	1895	3521
  HNGS PEX	1900	3509
  MSCT GR	1968	3486
  MWD - GR RES DIR SON ECD	883	3522
  VSP GR	1096	3500

• Casing and leak–off tests

  Casing and leak–off tests

  Casing type	Casing diam. [inch]	Casing depth [m]	Hole diam. [inch]	Hole depth [m]	LOT/FIT mud eqv. [g/cm3]	Formation test type
  CONDUCTOR	30	903.0	36	903.0	0.00	LOT
  SURF.COND.	20	1411.0	26	1425.0	1.20	LOT
  INTERM.	13 3/8	1939.0	17 1/2	1956.0	1.52	LOT
  OPEN HOLE		3526.0	12 1/4	3526.0	0.00	LOT

• Drilling mud

  Drilling mud

  Depth MD [m]	Mud weight [g/cm3]	Visc. [mPa.s]	Yield point [Pa]	Mud type	Date measured
  332	1.35	25.0		ULTRADRIL DW
  933	1.03			SPUD MUD
  1410	1.30			SPUD MUD
  1425	1.03			SPUD MUD
  1733	1.22	13.0		ULTRADRIL DW
  1850	1.35	26.0		ULTRADRIL DW
  1956	1.40	27.0		ULTRADRIL DW
  2010	1.35	24.0		ULTRADRIL DW
  2598	1.35	22.0		ULTRADRIL DW
  2674	1.35	23.0		ULTRADRIL DW
  3148	1.35	25.0		ULTRADRIL DW
  3526	1.35	26.0		ULTRADRIL DW