It's impossible, this is for publicity sake and acting like 'their' doing something. Shabab is still on the main high-way, there is no-way they can extract it without using the high-way to transport it. Beletwayn to Kismayo is basically not accessible to anyone due to shabab check-points which charge like thousands on just normal commercial trucks transporting goods to smaller towns, let alone an oil caravan of semi trailers. Plus the risk is too high for any investor in the south.
Shabab will purchase boats from puntland boat making factory and start 'sea wars' against the oil companies operating in the sea.
They think they can dig oil like PL did, Puntland controls it's land and sea, shabab knows, PL don't mess about, plus we will cut their last-lifeline 'bosaso port' after a huge karbash at the same time.