| NOVEMBER 2001- RELEASES |
| ACTIVITY UPDATE (29-11-01) |
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SUMMARY ·
Saltfleetby-6
results exceed expectation confirming 22m of good quality gross gas sand
in the previously undrilled southern part
of the 1. DEVELOPMENT DRILLING 1.1 Saltfleetby Gas Field, Onshore UK (ROC: 100% & Operator) Logging of
the Saltfleetby-6 appraisal well has been completed confirming a gross
vertical thickness of 22 metres of good quality gas bearing sand. In accordance
with the original well plan, the punch through appraisal hole has been
plugged back and a development sidetrack (Saltfleetby 6z) commenced at
2,704 metres. The sidetrack will build to near horizontal and is intended
to drill an extended section of the reservoir sand updip from the reservoir
intersected by the punch through hole. At 0600 hours, 28 November (UK
time) drilling of the sidetrack was continuing at 2,920 metres at an inclination
of 56 degrees. 2.1 Chestnut Oil Field EWT, UK North Sea (ROC: 14.875% carried) On the 27 November 2001 at 0100 hours (UK time) the 22/2a-11x well was shut-in having produced a total of 1.1 million barrels of oil and 0.9 billion cubic feet of gas on EWT. These volumes are within the government approved maximum volumes allowed under the EWT consent previously granted to allow dynamic reservoir information to be collected from the Chestnut Field. The intention now is to decommission the EWT vessel and shuttle tanker and associated equipment and consider the options for the potential development of the field. 3. EXPLORATION 3.1 WA-286-P, offshore Western Australia (ROC: 30%, Operator) Preparations
continue for the Cliff Head-1 exploration well, which is expected to start
drilling in late December 2001 with the precise start date subject to
rig availability. 3.2 Casamance Blocks, Offshore Senegal (ROC:46.25% & Operator) 853 km (56%)
of an estimated 1,523 km 2D seismic survey has been acquired offshore
Senegal. Due to better than expected progress the survey is now expected
to be completed within a week. 3.3 Block 7 Offshore Mauritania (ROC 2%) A 1,350 sq km 3D seismic survey, operated by UK-based Dana Petroleum plc, is underway offshore Mauritania. To date approximately 400 sq km of data have been acquired.
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| ACTIVITY UPDATE (22-11-01) |
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SUMMARY ·
Saltfleetby-6
confirms the presence of gas and good reservoir in the field's southern
culmination. 1. DEVELOPMENT DRILLING 1.1 Saltfleetby Gas Field, Onshore UK (ROC: 100% & Operator) At 1800 hrs
on 21 November 2001 (UK time), the Saltfleetby-6 appraisal/development
well had reached a total depth of 3,169 MDBRT in the punch through pilot
hole and wireline logging operations were underway. Preliminary drilling
and logging data indicate that approximately 20 m of the sands intersected
by the well represent good quality, gas-filled, reservoir. If the balance
of the logging programme confirms this view, the well will have established,
for the first time, the presence of gas in the southern culmination of
the field. Following completion of logging operations, the pilot hole
will be plugged back and a horizontal production well drilled. 2. DEVELOPMENT TESTING 2.1 Chestnut Oil Field EWT, UK North Sea (ROC: 14.875% carried) At 0600 hours on 21 November 2001 (UK time), the EWT at well 22/2a-11x was producing oil at a rate of approximately 13,750 BOPD. Cumulative production is just in excess of 1 million barrels of oil. The EWT is expected to terminate during November, 2001. 3. EXPLORATION 3.1 WA-286-P, offshore Western Australia (ROC: 30%, Operator) Preparations
continue for the Cliff Head-1 exploration well, which is expected to start
drilling in mid to late December 2001 with the precise start date subject
to rig availability. 3.2 Casamance Blocks, offshore Senegal, West Africa (ROC:46.25% & Operator) At 0200 hours
on 21 November 2001 (local time), a 1,500 km seismic survey commenced
over the shelf margin trend in the southwestern part of the Casamance
Blocks, Senegal. The survey is expected to be completed by the end of
December 2001. ROC and co-venturer, Woodside Energy Ltd, will each contribute
50% towards the cost of the survey. Each company holds a 46.25% beneficial
interest in the Casamance Blocks, with PETROSEN, the Senegalese national
oil company, holding a 7.5% non-contributing interest.
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| ACTIVITY UPDATE (15-11-01) |
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SUMMARY ·
Saltfleetby-6
nears target 1. DEVELOPMENT DRILLING 1.1 Saltfleetby Gas Field, Onshore Humber Basin (ROC: 100% & Operator) At 6.00 am
on 14 November 2001 (UK time), the Saltfleetby-6 appraisal /development
well was drilling ahead at 2,907 metres MDBRT towards a planned total
depth of 3,150 metres. The current well section is a pilot hole designed
to appraise the presence/absence of the main reservoir and its structural
elevation in the undrilled southern lobe of the Saltfleetby Gas Field.
If successful, the well, which is the highest risk appraisal/development
well yet to be drilled in the field, will be plugged back and sidetracked
horizontally as a production well on the crest of the southern culmination. 2. DEVELOPMENT TESTING 2.1 Chestnut Oil Field EWT, UK North Sea (ROC: 14.875% carried) At 6.00 a.m. on 14 November 2001 (UK time), the Extended Well Test ("EWT") at well 22/2a-11x was temporarily suspended awaiting suitable weather conditions to moor the shuttle tanker within the Chestnut Field and discharge the FPSO cargo in order to allow production to continue. The EWT is expected to terminate during November. 3. EXPLORATION 3.1 WA-286-P, offshore Western Australia (ROC: 30%, Operator) Preparations
continue for the Cliff Head-1 exploration well, which is expected to start
drilling in late December 2001 with the precise start date subject to
rig availability. 3.2 Casamance Blocks, offshore Senegal, West Africa (ROC:46.25% & Operator) ROC is currently contracting Veritas DGC's M/V New Venture seismic vessel to acquire 1,500 km of new 2D data, over the shelf margin trend in the southwestern part of the Casamance Blocks, Senegal. The shelf margin play, located in waters between 30 and more than 1,500 metres deep, represents an interesting new exploration concept within the license area. The survey
will be completed by end December 2001. ROC and joint venturer Woodside
Energy Ltd will each contribute 50% towards the cost of the survey. Each
company holds a 46.25% beneficial interest in the Casamance Blocks, with
PETROSEN, the Senegalese national oil company, holding a 7.5% non-contributing
interest.
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| DRILLING ACTIVITY UPDATE (08-11-01) |
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SUMMARY ·
UK drilling and testing activities continue 1. DEVELOPMENT DRILLING 1.1 Saltfleetby Gas Field (ROC: 100%) At 0600 hrs
on 7 November 2001 (UK time), the Saltfleetby-6 appraisal /development
well was drilling ahead at 2,283m MDBRT. The top of the well's primary
objective, the Carboniferous Westphalian sandstones which contain virtually
all of the gas reserves in the main Field area, is prognosed at approximately
3,100 m MDBRT. The well will evaluate the reservoir sands in the previously
undrilled southern culmination of the Saltfleetby structure and is regarded
as the highest risk appraisal/development well yet drilled in the Saltfleetby
Field. 2. PRODUCTION TESTING 2.1 Chestnut Oil Field Extended Well Test ("EWT"), UK North Sea (ROC: 14.875% carried) At 0600 hrs on 7 November 2001 (UK time), EWT production from well 22/2a-11x was temporarily suspended due to weather conditions. It is now expected that the EWT will be completed later this month. 3. EXPLORATION DRILLING 3.1 WA-286-P, offshore Western Australia (ROC: 30%, Operator) Preparations
continue for the Cliff Head-1 exploration well, which is expected to start
drilling in December 2001 with the precise start date subject to rig availability.
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| DRILLING ACTIVITY UPDATE (01-11-01) |
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SUMMARY · UK drilling and testing activities continue 1. DEVELOPMENT DRILLING 1.1 Saltfleetby Gas Field (ROC: 100%) At 0600 hrs on 31 October 2001 (UK time), the Saltfleetby-6 appraisal/development well was drilling ahead at 1,864m MDBRT having set intermediate casing at 1,836m MDBRT. The well will now drill an appraisal "punch-through" hole to locate and evaluate the reservoir sands in the previously undrilled southern culmination of the Saltfleetby structure, entering the section at approximately 60 degrees from vertical. If this appraisal is successful, the well will then be plugged back and re-drilled as a horizontal producer. The well is regarded as the highest risk appraisal/development well yet drilled in the Saltfleetby Field. 1.2 Kyle
Oil Field, UK North Sea (ROC: 12.5%) 2. PRODUCTION TESTING 2.1 Chestnut Oil Field Extended Well Test ("EWT"), UK North Sea (ROC: 14.875% carried) At 0600 hrs on 31 October 2001 (UK time), EWT production from well 22/2a-11x was continuing as planned, at an oil production rate of about 13,000 BOPD. 3. SALTFLEETBY GAS FIELD PRODUCTION (ROC: 100%) Subsequent
to individual wells being brought on to compression during October 2001,
the Saltfleetby Gas Field has continued to produce at approximately 35
MMSCFD, an increase in overall production of about 20%. The final well
to be brought on to compression was Saltfleetby-5, although it is still
too early to comment with regard to any sustained production rate from
this well which produces from a different reservoir compared to the other
wells and which had been shut in since early this year. Dr
John Doran Return to ASX Releases main page
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