DEA: Another Alta appraisal well successfully completed
Friday, Jul 14, 2017
The drilling of appraisal well 7220/11-4 (Alta-4) close to the Alta discovery well in PL609 has been successfully completed. A production test proved good reservoir properties. DEA Norge is partner in PL609, with a share of 30%.

“We are pleased with the results of this well, that further develops our understanding of the Alta reservoirs and findings of previous exploration activities in PL609,” says Hans-Hermann Andreae, Managing Director of DEA Norge. “The licence partnership with operator Lundin continues with doing a good job. With every well, we are completing the picture of the reservoir,” Andreae adds.

The well encountered a gross hydrocarbon column of 48 metres, comprising 4 metres of gas and 44 metres of oil in a sequence of Permian-Triassic clastic carbonate sediments. Extensive data acquisition and sampling was carried out in the reservoir, including conventional coring and fluid sampling. Pressure data show the same fluid contacts and gradients as observed in previous wells drilled on the Alta discovery, confirming good communication across the large Alta structure.

A production test was performed in the oil zone, producing at a stabilised rate of about 6,000 barrels of oil per day with low pressure drawdown and constrained by rig testing facilities. The production test confirmed good reservoir properties and good lateral continuity within the Permian-Triassic clastic reservoirs.

The Alta-4 well is located approximately 2 kilometres south of the original Alta discovery well drilled in 2014 and approximately 2.5 kilometres north of the previous appraisal well 7220/11-3. The main objectives of the well were to further appraise the Alta discovery and to provide a calibration point for the drilling of a possible horizontal well and the planned extended well test in 2018.

The Alta discovery well 7220/11-1 was completed in October 2014, and is located in the southern Barents Sea, approximately 160 kilometres from the Norwegian coastline. The recoverable oil and gas resource pre-drill Alta-4 estimate is between 125 and 400 million barrels of oil equivalent (MMboe). DEA Norge is partner in PL609, with a share of 30%. Operator is Lundin Norway with 40% interest and Idemitsu Petroleum Norge holds the remaining 30% share.

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