Dick ter Avest

Shell International Ltd. provides business support services. It engages in upstream and downstream oil and gas businesses in the United Kingdom and internationally. The company is headquartered in London, the United Kingdom.

Advanced Well Technologies Pty Ltd. provides engineering consultancy services. Its services include field development planning, drilling and well construction design, engineering and supervision, well testing design, completions design, subsea well-related equipment design, reservoir engineering and quality assurance or quality control services and geologists, production technologists and flow assurance engineers. The company was founded in November 1996 and is headquartered in Perth, Australia.