Singapore – base upstream petroleum company krisenergy has produced the first crude oil from offshore Wassana petroleum block (G10 / 48) , acording to the Energy Mineral fuels department. KrisEnergy was awarded an exploration licence in December 2006 by the department under the 19 th round of petroleum exploration.They will allow investors to select whether they want to be granted licences under the existing concession basis or a new production-sharing contract basis.