You left out 'The well continues to be drilled safely and...

You left out 'The well continues to be drilled safely and efficiently': they have not encountered or reached the hoped for high flow rate large gas reservoir target but have announced minor 'gas shows' only.

That is why there has been no halt in trading pending the announcement of success or otherwise (non economic) for the project.

And why the share is drifting down again.

Otherwise, if they have hit 'the target' as you think they are saying they have, then the 'gas shows' are all they got, in other words a duster