16/2-13 A
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General information
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Wellbore history
GeneralWell 16/2-13 A is a geological side track to well 16/2-13 S on the Johan Sverdrup discovery on the Utsira High in the North Sea, 6.7 km northeast of well 16/2-8 and 2.4 km north-east of well 16/2-6. The objective of the side track was to calibrate the depth model in a position far enough away from 16/2-13 S to provide significant information for depth conversion; to investigate if FWL in 16/2-10 is present in area across the fault close to 16/2-13 S and; to map lateral thickness and quality variations in the Jurassic sequence.Operations and resultsWell 16/2-13 A was kicked off at 735 m in 16/2-13 S on 30 August 2012. The semi-submersible installation Transocean drilled the well to TD at 2776 m (2101.7 m TVD) in indeterminate pre-Rotliegend Group rock. The sidetrack was drilled with Enviromul OBM.The reservoir was encountered at 2596.06 (1926 m TVD) about 1250 metres north of well 16/2-13 S and slightly shallower than prognosis. It consisted of a 26.5 m thick Intra-Draupne, Intra-Heather and Hugin sandstone package, similar as in 16/2-13 S. The oil column in the sidetrack was 12 m and the oil water contact was established at 1949 m TVD (1925 m TVD MSL).Four cores were cut from 2587.3 m in Draupne Formation shales to 2669.0 m in Pre-Rotliegendes rock. The core to log shift for all four cores is -1.5 m. The core recovery was 100%. RCX wire line fluid samples were taken at 2596.7 m (oil), 2607.5 m (oil), 2608.5 m (oil and water), 2610.7 m (water), and 2615.0 m (water).The well was permanently abandoned on 29 September 2012 as an oil appraisal.TestingNo drill stem test was performed. -
Cuttings at the Norwegian Offshore Directorate
Cuttings at the Norwegian Offshore Directorate Cuttings available for sampling?YESCuttings at the Norwegian Offshore Directorate Cutting sample, top depth [m]Cutting samples, bottom depth [m]740.002776.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom12587.32597.3[m ]22597.32619.7[m ]32619.72644.9[m ]42644.92669.0[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]81.7Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Oil samples at the Norwegian Offshore Directorate
Oil samples at the Norwegian Offshore Directorate Test typeBottle numberTop depth
MD [m]Bottom depth
MD [m]Fluid typeTest timeSamples availableMDT2607.540.00OIL21.09.2012 - 00:00NOMDT0.002596.70OIL21.09.2012 - 00:00NOMDT2608.570.00OIL21.09.2012 - 00:00NO -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit1408388699459451085163316861686175617831992204120412090223323532393243124312527255025832583259726132621262426242626262626582693 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]MRCH JAR GR PCOR25462755MRCH JAR TTRM DSL CN ZDL HDIL24512773MRCH JAR TTRM DSL EI ORIT UXPL24752752MRCH JAR TTRM DSL FLEX MREX24512773MRCH JAR TTRM DSL XMAC ORIT 3DEX5002773MRCH JAR TTRM R6TC IFX RLVP RCX25962701PWD GR RES DIR DEN CAL NEU SON6822774 -
Casing and leak–off tests
Casing and leak–off tests Casing typeCasing diam.
[inch]Casing depth
[m]Hole diam.
[inch]Hole depth
[m]LOT/FIT mud eqv.
[g/cm3]Formation test typeCONDUCTOR30218.036220.00.00SURF.COND.20717.026726.01.74LOTPILOT HOLE725.09 7/8725.00.00INTERM.9 5/82487.012 1/42495.01.60FITOPEN HOLE2776.08 1/22776.00.00 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured6671.3934.0Water Base8801.3523.0Enviromul OBM21981.4535.0Enviromul OBM24951.4522.0Enviromul OBM25051.2020.0Enviromul OBM27761.2024.0Enviromul OBM -
Pressure plots
Pressure plots The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.Pressure plots Document nameDocument formatDocument size [MB]pdf0.22