Generated 11.02.2012
|
|
The NPD's Fact-pages |
|
|
Generated 11.02.2012 |
|
After more than 10 years as a fact provider NPDs FactPages version 1 will be shut down in Dec. 2011.
Start using FactPages version 2 now! See also FactPages version 2 Quick Reference' If you have any questions or comments please send an e-mail to FactWEB@npd.no. |
| NPDID wellbore: | 6118 | |
| Well name: | 6305/5-3 | |
| Drilling operator name: | A/S Norske Shell | |
| Geodetic datum: | ED50 | |
| Coordinates: | 63° 34` 53.76`` N | 5° 25` 07.38`` E |
| UTM coordinates: | 7052835.00 N | 620055.01 E |
| UTM zone: | 31 | |
| Drilled in production licence: | 209 | |
| Area: | NORWEGIAN SEA | |
| Discovery: | 6305/5-1 ORMEN LANGE | |
| Field: | ORMEN LANGE | |
| Drill permit: | 1246-L | |
| Drilling facility: | LEIV EIRIKSSON | |
| Drilling days: | 70 | |
| Wellbore entry date: | 19.08.2009 | |
| Wellbore completion date: | 27.10.2009 | |
| Original wellbore purpose: | APPRAISAL | |
| Wellbore purpose: | APPRAISAL | |
| Wellbore status: | SUSPENDED | |
| Wellbore contents: | GAS | |
| Discovery wellbore: | NO | |
| Formation/age with hydrocarbons 1: | EGGA FM (INFORMAL) / PALEOCENE | |
| Seismic location: | inline 4627 & crossline5121 | |
| Kelly bushing elevation (KB) [m]: | 25 | |
| Water depth [m]: | 832 | |
| Total Depth (MD) [m]: | 2954 | |
| Final vertical depth (TVD) [m]: | 2837 | |
| Max inclination [°]: | 24.90 | |
| Bottom hole temperature [°C]: | ||
| Oldest penetrated age: | LATE CRETACEOUS | |
| Oldest penetrated formation: | SPRINGAR FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
General
Well 6305/5-3 S was drilled on the north-eastern flank of the Ormen Lange Field in the Norwegian Sea. The well had three objectives: to appraise the Egga Reservoir Unit and Springar Formation for fluid content and reservoir quality; to investigate the extent of pressure communication between the C-Template area and the A- and B -Template
area within the Egga Reservoir Unit; and to test possible hydrocarbon potential in the overlying Tare Formation
Operations and results
Appraisal well 6305/5-3 S was spudded with the semi-submersible installation Leiv Eirikson on 19 August 2009 and drilled to TD at 2954 m (2837 m TVD) in the Late Cretaceous Springar Formation. Due to junk in the hole when drilling out of the 20" a technical sidetrack was made (6305/5-3 ST2); otherwise operations went forth without significant problems. The well was drilled with seawater and hi-vis pills down to 1651 m and with Glydril mud from 1651 m to TD.
Top of the Egga Reservoir Unit was encountered at 2797 m (2693.9 m TVD) and was 31 m TVD thick. This was 27 m deeper and 6 m thinner than prognosed. Pressure testing and down hole fluid analysis established the GWC to within 1.9 m. The Gas-Down-To (GDT) was determined at 2678.7 m TVD MSL and the Water-Up-To (WUT) at 2680.6 m TVD MSL. This is about 176 m shallower than the DHI in segment 3. The net/gross came in on the lower end of the prognosis, while the porosity was close to the prognosed. The pressure of the Egga gas-leg was some 3 bar lower than the virgin Ormen Lange gas pressure at this depth, indicating depletion and hence connectivity to the producers of the A and B templates. The Springar and Tare Formation reservoir properties proved to be very poor and no hydrocarbon saturations could be determined.
Sidewall cores were taken, but no conventional coring was done. MDT fluid samples were obtained at 2805 m (gas zone), 2812.4 m (water zone) and 2837 m (water zone). Sampling showed that the water-bearing interval had gas below the GWC.
The well was suspended on 27 October 2009 as a gas appraisal.
Testing
No drill stem test was performed.
Interval [m]: 1610.00 - 2954.00
No cores in this wellbore.
No scanned core photos available
No palynological slides in this wellbore.
No oil samples available.
| Type | Casing diam. [inch] | Depth below KB [m] | Hole diam. [inch] | Hole depth below KB [m] | Lot mud eqv. [g/cm3] |
|---|---|---|---|---|---|
| CONDUCTOR | 30 | 961.0 | 36 | 965.0 | |
| SURF.COND. | 20 | 1651.0 | 26 | 1656.0 | 1.39 |
| INTERM. | 13 3/8 | 2200.0 | 17 1/2 | 2206.0 | 1.50 |
| OPEN HOLE | 2954.0 | 12 1/4 | 2954.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 1646 | 1.26 | Glydril DW | |||
| 2206 | 1.33 | Glydril DW | |||
| 2608 | 1.35 | Glydril DW | |||
| 2956 | 1.35 | 21/10/2009 20:00 Glydril DW | |||
| 2956 | 1.37 | 23/10/2009 20:00 Glydril DW | |||
| 2956 | 1.35 | Glydril DW |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| MWD LWD - DI | 857 - 941 |
| MWD LWD - DI GR RES PWD | 941 - 2954 |
| GR PPC MSIP PPC | 1545 - 1623 |
| FMI PPCMSIP ACTS ECRD | 2145 - 2894 |
| ILE CMR HRLA ECRD | 2185 - 2924 |
| PEX ECS XPT ACTS ECRD | 2177 - 2929 |
| XPT ACTS ECRD | 2569 - 2880 |
| VSP GR | 1600 - 2914 |
| MDT GR | 2805 - 2882 |
| MSCT GR ECRD | 2782 - 2881 |
| MSCT GR ECRD | 2545 - 2830 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 857 | NORDLAND GP |
| 857 | NAUST FM |
| 1660 | KAI FM |
| 1732 | HORDALAND GP |
| 1732 | BRYGGE FM |
| 2350 | ROGALAND GP |
| 2350 | TARE FM |
| 2498 | TANG FM |
| 2797 | EGGA FM (INFORMAL) |
| 2842 | SHETLAND GP |
| 2842 | SPRINGAR FM |
No composite log presently available.
No geochemical data presently available. Regional geochemical studies which include data from this well may however be filed on a different well.
No documents presently available.
