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Field: TOR

General information

Current activity status: PRODUCING
Discovery wellbore: 2/5-1
Discovery year: 1970
View large picture.

Description Norwegian

Development

Tor is an oil field in the Ekofisk area in the southern part of the North Sea. The water depth in the area is about 70 metres. The field has been developed with a combined wellhead and processing facility tied to Ekofisk.

Reservoir

The main reservoir consists of fractured chalk of the Tor Formation of Late Cretaceous age. The reservoir lies at a depth of approximately 3 200 metres. The Ekofisk Formation of Early Paleocene age also contains oil, but has poorer reservoir quality. So far, minor volumes have been produced from this formation.

Recovery strategy

Tor was originally produced by pressure depletion. In 1992, limited water injection commenced. The facility has subse quently been upgraded and the scope of water injection has been expanded. Five wells are producing with gas lift.

Transport

Oil and gas are transported by pipelines to the processing facility at Ekofisk J. Gas from the Ekofisk area is transported by pipe-line to Emden, while the oil, also containing NGL fractions, is sent via pipeline to Teesside.

Status

The Tor facility has a limited lifetime. A redevelopment of the field, to recover significant remaining resources in both the Tor and the Ekofisk formations, is being evaluated.

Activity status history

Activity status From date To date
PDO APPROVED 04.05.1973 28.06.1978
PRODUCING 28.06.1978

Current owner(s)

Business Area: TOR UNIT

The field extends into

Block(s) Production licence(s)
2/4 018
2/5 006

Current operator(s)

Company
ConocoPhillips Skandinavia AS

The NPDs reserve estimates as of 31.12.2010 (Norwegian share)

Recoverable reserves Remaining reserves
Oil
[mill Sm3]		 Gas
[bill Sm3]		 NGL
[mill tonn]		 Cond.
[mill Sm3]		 Oil
[mill Sm3]		 Gas
[bill Sm3]		 NGL
[mill tonn]		 Cond.
[mill Sm3]
24.40 10.90 1.20 0.00 1.00 0.10 0.00 0.00

Net production of saleable products (Norwegian share)

NGL = butane + ethane + isobutane + propane + LPG + gasoline + NGL mix.
Condensate = Condensate.
Sm3o.e. = oil + gas + NGL + condensate.

Charts


Oil
[mill Sm3]		 Gas
[bill Sm3]		 NGL
[mill tonn]		 Cond.
[mill Sm3]		 NGL
[mill Sm3]		 Sm3o.e.
[mill]
Total per nov.2011 23.634561 10.835012 1.177549 0.000000 2.345817 36.815390
2011 0.198429 0.007455 0.002077 0.000000 0.004368 0.210252
nov.2011 0.017296 0.000699 0.000200 0.000000 0.000422 0.018417
oct.2011 0.023466 0.000977 0.000263 0.000000 0.000557 0.025000
sep.2011 0.021442 0.000846 0.000221 0.000000 0.000467 0.022755
aug.2011 0.022163 0.000896 0.000223 0.000000 0.000473 0.023532
jul.2011 0.022757 0.000795 0.000226 0.000000 0.000476 0.024028
jun.2011 0.018458 0.000534 0.000180 0.000000 0.000376 0.019368
may.2011 0.018789 0.000487 0.000179 0.000000 0.000372 0.019648
apr.2011 0.013691 0.000393 0.000127 0.000000 0.000263 0.014347
mar.2011 0.011879 0.000440 0.000122 0.000000 0.000256 0.012575
feb.2011 0.011879 0.000507 0.000131 0.000000 0.000275 0.012661
jan.2011 0.016609 0.000881 0.000205 0.000000 0.000431 0.017921
2010 0.237066 0.014265 0.003349 0.000000 0.006873 0.258204
dec.2010 0.022341 0.001280 0.000265 0.000000 0.000560 0.024181
nov.2010 0.018385 0.000864 0.000202 0.000000 0.000427 0.019676
oct.2010 0.020519 0.001110 0.000286 0.000000 0.000578 0.022207
sep.2010 0.020233 0.001292 0.000275 0.000000 0.000564 0.022089
aug.2010 0.022596 0.001418 0.000337 0.000000 0.000686 0.024700
jul.2010 0.028431 0.001543 0.000332 0.000000 0.000677 0.030651
jun.2010 0.006242 0.000267 0.000021 0.000000 0.000046 0.006555
may.2010 0.024375 0.001520 0.000406 0.000000 0.000827 0.026722
apr.2010 0.017973 0.000858 0.000270 0.000000 0.000546 0.019377
mar.2010 0.010709 0.000661 0.000167 0.000000 0.000341 0.011711
feb.2010 0.020914 0.001613 0.000376 0.000000 0.000769 0.023296
jan.2010 0.024348 0.001839 0.000412 0.000000 0.000852 0.027039
2009 0.291949 0.024138 0.004949 0.000000 0.010127 0.326214
2008 0.307169 0.032965 0.006200 0.000000 0.012521 0.352655
2007 0.314827 0.053809 0.007719 0.000000 0.015891 0.384527
2006 0.164293 0.023813 0.004164 0.000000 0.008513 0.196619
2005 0.180349 0.019744 0.003919 0.000000 0.007957 0.208050
2004 0.197161 0.021414 0.004101 0.000000 0.008346 0.226921
2003 0.162892 0.017144 0.003271 0.000000 0.006660 0.186696
2002 0.213535 0.024964 0.004039 0.000000 0.008180 0.246679
2001 0.256831 0.034708 0.004936 0.000000 0.009880 0.301419
2000 0.255572 0.040556 0.005298 0.000000 0.010677 0.306805
1999 0.221491 0.037131 0.005348 0.000000 0.010784 0.269406
1998 0.230711 0.036404 0.005437 0.000000 0.010977 0.278092
1997 0.346830 0.057085 0.008643 0.000000 0.017306 0.421221
1996 0.359242 0.062885 0.008636 0.000000 0.017190 0.439317
1995 0.338633 0.067366 0.008893 0.000000 0.017823 0.423822
1994 0.338599 0.074034 0.009531 0.000000 0.019134 0.431767
1993 0.345858 0.094797 0.011109 0.000000 0.022479 0.463134
1992 0.362346 0.144108 0.015470 0.000000 0.031401 0.537855
1991 0.346273 0.161191 0.018580 0.000000 0.037771 0.545235
1990 0.472642 0.241651 0.034387 0.000000 0.068414 0.782707
1989 0.510003 0.312373 0.044687 0.000000 0.089230 0.911606
1988 0.482864 0.318130 0.048206 0.000000 0.095564 0.896558
1987 0.477363 0.343058 0.044255 0.000000 0.088523 0.908944
1986 0.624547 0.463587 0.058604 0.000000 0.116754 1.204888
1985 0.824205 0.779392 0.101633 0.000000 0.201494 1.805091
1984 0.867210 0.935608 0.107809 0.000000 0.217469 2.020287
1983 0.967933 1.087090 0.126957 0.000000 0.254676 2.309699
1982 1.530730 1.341813 0.136779 0.000000 0.272185 3.144728
1981 1.883789 1.177126 0.116104 0.000000 0.229188 3.290103
1980 3.589572 1.287604 0.141237 0.000000 0.277508 5.154684
1979 4.526296 1.156825 0.071222 0.000000 0.139954 5.823075
1978 1.207351 0.340779 0.000000 0.000000 0.000000 1.548130

Gross production (Norwegian share)

Sm3o.e. = oil + gas + condensate.

Charts

Oil
[mill Sm3]		 Gas
[bill Sm3]		 Cond.
[mill Sm3]		 Sm3o.e.
[mill]		 Water
[mill Sm3]
Total per nov.2011 25.705550 11.190950 0.000000 36.896500 3.556156
2011 0.195718 0.017467 0.000000 0.213185 0.252496
nov.2011 0.017301 0.001518 0.000000 0.018819 0.015934
oct.2011 0.023173 0.002048 0.000000 0.025221 0.023274
sep.2011 0.021132 0.001861 0.000000 0.022993 0.026871
aug.2011 0.021840 0.001870 0.000000 0.023710 0.034969
jul.2011 0.022451 0.001792 0.000000 0.024243 0.032565
jun.2011 0.018158 0.001379 0.000000 0.019537 0.017597
may.2011 0.018430 0.001372 0.000000 0.019802 0.020684
apr.2011 0.013457 0.001221 0.000000 0.014678 0.021011
mar.2011 0.011714 0.001268 0.000000 0.012982 0.020174
feb.2011 0.011716 0.001304 0.000000 0.013020 0.018487
jan.2011 0.016346 0.001834 0.000000 0.018180 0.020930
2010 0.234608 0.025055 0.000000 0.259663 0.224133
dec.2010 0.022096 0.002342 0.000000 0.024438 0.020653
nov.2010 0.018028 0.001759 0.000000 0.019787 0.017107
oct.2010 0.020424 0.002072 0.000000 0.022496 0.013158
sep.2010 0.020092 0.002247 0.000000 0.022339 0.016736
aug.2010 0.022459 0.002449 0.000000 0.024908 0.016749
jul.2010 0.028252 0.002699 0.000000 0.030951 0.022570
jun.2010 0.005845 0.000653 0.000000 0.006498 0.004550
may.2010 0.024180 0.002563 0.000000 0.026743 0.018926
apr.2010 0.017848 0.001524 0.000000 0.019372 0.015126
mar.2010 0.010601 0.001176 0.000000 0.011777 0.013907
feb.2010 0.020733 0.002621 0.000000 0.023354 0.030125
jan.2010 0.024050 0.002950 0.000000 0.027000 0.034526
2009 0.289016 0.037092 0.000000 0.326108 0.377219
2008 0.304619 0.047308 0.000000 0.351927 0.390868
2007 0.310857 0.071066 0.000000 0.381923 0.187312
2006 0.163925 0.035410 0.000000 0.199335 0.031384
2005 0.179715 0.030856 0.000000 0.210571 0.037224
2004 0.196918 0.033599 0.000000 0.230517 0.177271
2003 0.162234 0.028596 0.000000 0.190830 0.315695
2002 0.213288 0.031237 0.000000 0.244525 0.379342
2001 0.257446 0.043743 0.000000 0.301189 0.714563
2000 0.256207 0.049253 0.000000 0.305460 0.468649
1999 0.231193 0.033222 0.000000 0.264415 0.000000
1998 0.239606 0.038420 0.000000 0.278026 0.000000
1997 0.367739 0.063343 0.000000 0.431082 0.000000
1996 0.369673 0.069812 0.000000 0.439485 0.000000
1995 0.349517 0.078382 0.000000 0.427899 0.000000
1994 0.350611 0.084990 0.000000 0.435601 0.000000
1993 0.361270 0.105085 0.000000 0.466355 0.000000
1992 0.389062 0.153200 0.000000 0.542262 0.000000
1991 0.380006 0.172449 0.000000 0.552455 0.000000
1990 0.534781 0.254336 0.000000 0.789117 0.000000
1989 0.593337 0.320831 0.000000 0.914168 0.000000
1988 0.571113 0.324317 0.000000 0.895430 0.000000
1987 0.562547 0.350784 0.000000 0.913331 0.000000
1986 0.735770 0.475760 0.000000 1.211530 0.000000
1985 1.017749 0.794259 0.000000 1.812008 0.000000
1984 1.087584 0.957056 0.000000 2.044640 0.000000
1983 1.214303 1.119383 0.000000 2.333686 0.000000
1982 1.803247 1.373301 0.000000 3.176548 0.000000
1981 2.104799 1.190715 0.000000 3.295514 0.000000
1980 3.833876 1.275492 0.000000 5.109368 0.000000
1979 4.620485 1.163254 0.000000 5.783739 0.000000
1978 1.222731 0.341877 0.000000 1.564608 0.000000

Exploration wellbore(s)

Name Entry date Completion date Drill permit WB purpose WB status WB contents
2/4-7 1971.07.24 1971.10.08 59-L APPRAISAL P&A OIL
2/4-8 1971.11.25 1972.03.29 63-L APPRAISAL P&A OIL
2/5-1 1970.08.01 1970.11.22 41-L WILDCAT P&A OIL
2/5-2 1971.01.15 1971.04.20 51-L APPRAISAL P&A OIL
4 wellbore(s)

Development wellbore(s)

Name Entry date Completion date Drill permit WB purpose WB status WB contents
2/4-E-1 1979.03.22 1979.06.01 142-P PRODUCTION PRODUCING OIL
2/4-E-2 1979.07.19 1979.09.12 153-P PRODUCTION PLUGGED NOT AVAILABLE
2/4-E-2 A 1988.03.17 1988.05.17 446-P PRODUCTION PRODUCING OIL
2/4-E-3 1979.06.03 1979.07.17 148-P PRODUCTION PRODUCING OIL
2/4-E-4 3319-P PRODUCTION PREDRILLED
2/4-E-5 1978.09.23 1978.11.23 122-P INJECTION INJECTING WATER
2/4-E-6 1991.07.10 1991.11.14 652-P PRODUCTION PLUGGED NOT AVAILABLE
2/4-E-6 A 1991.11.14 1992.05.01 653-P PRODUCTION PRODUCING OIL
2/4-E-7 1979.09.13 1980.02.25 160-P PRODUCTION PRODUCING OIL
2/4-E-8 1981.09.09 1981.11.12 208-P PRODUCTION PLUGGED NOT AVAILABLE
2/4-E-9 1977.05.01 1977.07.25 63-P PRODUCTION PRODUCING OIL
2/4-E-10 1977.02.03 1977.04.05 54-P INJECTION INJECTING WATER
2/4-E-11 1989.06.27 1989.08.27 522-P PRODUCTION PRODUCING OIL
2/4-E-12 1978.02.06 1979.01.11 89-P PRODUCTION CLOSED OIL
2/4-E-13 1977.07.29 1977.11.18 70-P PRODUCTION CLOSED OIL
2/4-E-14 1980.04.01 1980.09.11 178-P PRODUCTION PLUGGED NOT AVAILABLE
2/4-E-14 A 1989.04.29 1989.06.06 515-P PRODUCTION PRODUCING OIL
2/4-E-15 1977.04.28 1977.04.30 62-P PRODUCTION JUNKED NOT AVAILABLE
2/4-E-16 1977.11.25 1978.01.27 79-P PRODUCTION CLOSED OIL
2/4-E-17 1979.01.11 1979.03.22 137-P PRODUCTION CLOSED OIL
2/4-E-18 2006.08.16 2006.09.28 2692-P OBSERVATION PLUGGED
2/4-E-18 A 2006.09.29 2006.10.24 2693-P PRODUCTION SUSP.AT TD OIL
22 wellbore(s)

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