29/08/2014 Lundin Norge AS, operator of production licence 359, has completed drilling of appraisal well 16/4-8 S.
The 16/4-6 S discovery was proven in the spring of 2013 in Jurassic/Triassic reservoir rocks about 15 kilometres south of the Edvard Grieg field in the central North Sea. It was delineated to the southeast with the dry 16/5-5 well in production licence 410 in the autumn of 2013. 16/4-8 S, the second appraisal well on the discovery, was drilled 3.9 kilometres southeast of the 16/4-6 S discovery well. After drilling the discovery well, the operator’s resource estimate was between 4 and 19 million standard cubic metres (Sm3) of recoverable oil.
The objective of the well was to delineate the 16/4-6 S discovery with regard to scope and reservoir properties.
The well encountered a total oil column about 30 metres below a very thin gas zone in Jurassic/Triassic reservoir rocks, of which about 15 metres had very good properties. The reservoir rocks, including the water zone, consist of 500-metre thick sandstones over 200-metre thick conglomerate rock. Pressure data shows there is no pressure communication between 16/4-8 S and the 16/4-6 S discovery well.
Extensive data acquisition and sampling have been carried out. A formation test was conducted, which showed poor production properties. The maximum production rate was 75 Sm3 oil per flow day through a 48/64 inch nozzle opening.
Preliminary estimations of the size of the discovery are currently between 4 and 11 million Sm3 recoverable oil equivalents. The licensees will consider further delineation of the discovery.
This is the third exploration well drilled in production licence 359. The licence was awarded in APA 2005.
Well 16/4-8 S was drilled to a vertical and measured depth of 2645 and 2675 metres below the sea surface, respectively, and was terminated in Triassic or older rocks. Water depth is 100 metres.
The well has been permanently plugged and abandoned.
The well was drilled by the Bredford Dolphin drilling facility, which will now proceed to the northern North Sea to drill wildcat well 33/12-10 S in production licence 631, where Lundin Norge AS is the operator.
Contact in the Norwegian Petroleum Directorate
Eldbjørg Vaage Melberg, tel. +47 51 87 61 00