GM Stock Lobster. Offshore drilling is certainly a sector to watch, especially the companies with ultra deep drilling ships and rigs: RIG, DO, and NE and the Norwegians Seadrill (SDRLF.pk), Awilco (AWO in Oslo) and Ocean Rig (OCR in Oslo, bought by DRYS recently).
Another sector to research is the deepsea service and equipment companies. When you think that the Norwegian gas field Ormen Lange (opened last November) is operated by ROVs (Remote Operated Vehichles) on the seabed - no platforms above sealevel - there must be something in that kind of operating coming up. Drilling was made by rigs, but now no operating platform rigs needed.
We know that most of the explorative drilling is made offshore and most of the achieveable oil reserves are predicted to be found under sea areas, so the deepsea industry is a growing industry - very much welcomed by the innovative minds of the mankind.