Kathryn prospect – 9/2-12
The objective of the well was to prove petroleum in Middle Jurassic Sandnes formation. Well 9/2-12 encountered about 130 m of reservoir rocks in the Sandnes formation, of which about 50 m of sandstone with poor to moderate quality. The well is dry.
The well was drilled about six km northeast of the Yme field centre.
Shrek prospect – 6507/5-9 S & 6507/5-9 A
The primary exploration target for both wells was to prove petroleum in Middle Jurassic Fangst group. The secondary exploration target was to prove petroleum in Lower Jurassic Båt group and to delineate the discovery toward the west.
The discovery well 6507/5-9 S encountered a total oil and gas column of about 85 m in the Fangst and Båt groups, of which about 60 m of sandstones with mainly good to very good reservoir quality. The GOC and OWC were encountered at 2034 m and 2074 m under the sea surface, respectively.
Appraisal well 6507/5-9 A encountered a total oil and gas column of about 65 m in the Fangst and Båt groups, of which about 45 m of sandstones with mainly good to very good reservoir quality. Both the GOC and the OWC in the appraisal well came in at equivalent depths as in the discovery well.
Preliminary estimates place the size of the discovery between 19 and 38 MMBoe.
The Shrek discovery is located about 5 km south from the Skarv FPSO. The licensees will consider tying the discovery in to the Skarv facility.
“As initially announced, drilling of the Shrek prospect took a month and a half. We confirmed the presence of natural gas and crude oil in the lower and middle Jurassic sandstones. We took cores and samples of reservoir fluids and performed detailed geophysical logging, which allowed us to determine the preliminary size and assess the quality of the reservoir,” commented Piotr Woźniak, President of the PGNiG Management Board. “This discovery is a big success for PGNiG Upstream Norway, which is operator for the license,” he added.