LONDON--Oil group San Leon Energy PLC (SLE.LN) said Wednesday that it has accepted a cash offer of 9.9 million euros for its 2.5% overriding royalty interest in the Amstel Field production license Block Q13a, offshore Netherlands from GDF Suez E&P, the operator of the Amstel Field.

MAIN FACTS:

-San Leon is planning further exploration

-Shares at 0741GMT, up 0.63%, at 80.5 pence valuing the company at GBP91 million.

-Write to Rory Gallivan at rory.gallivan@dowjones.com