Oil & Gas Seawell in $890m takeover of Allis-Chalmers EnergySeadrill's majority-owned subsidiary, Seawell, is acquiring US firm Allis-Chalmers Energy in a deal worth some $890million, including assumed debt. September 6th 2010, 2:29 am 2 min read Facebook An icon of a facebook f logo. LinkedIn An icon of the LinkedIn logo. Twitter An icon of the Twitter logo. Seadrill's majority-owned subsidiary, Seawell, is acquiring US firm Allis-Chalmers Energy in a deal worth some $890million, including assumed debt.
