Until May 2010 , NIGEC was under the control of the NIOC .
The Petroleum Ministry transferred NIGEC , incorporating NIGEC under NIGC in an attempt to broaden responsibility for new natural gas projects .
Until May 2010 , NIGEC was under the control of the NIOC , but the Petroleum Ministry transferred NIGEC , incorporating it under NIGC in an attempt to broaden responsibility for new natural gas projects .