drilling rig consisting of an offshore platform (floating or fixed to the sea bed) from which many oil wells can be bored radially

drilling rig consisting of an offshore platform (floating or fixed to the sea bed) from which many oil wells can be bored radially

drilling rig consisting of an offshore platform (floating or fixed to the sea bed) from which many oil wells can be bored radially

drilling rig consisting of an offshore platform (floating or fixed to the sea bed) from which many oil wells can be bored radially