In this paper the author discusses the design and operation of submersibles as a means of servicing underwater oil and gas wells on the U.K. continental shelf in water depths of more than 300 ft. He relates his discussion to design studies, undertaken at University College, London, of a manned submersible of some 60 tons submerged displacement, which he calls the "Pobble". The concept of the "Pobble" is that it should be capable of operating from a land base independently of a mother ship, for which purpose the author advocates the use of a recycle Diesel engine for propulsion. The UCL studies indicate that with this type of propulsion plant it would be possible for the "Pobble" to transit between the land base and a well area 150 miles or more apart at a speed of at least eight knots, and to achieve an endurance of five days or so. The author suggests that the production of oil and gas from wells in deep water will necessitate the development of an underwater station including a pressure-tight house in which personnel can work when necessary. Although the design is based on this idea, so that it can carry passengers and equipment and transfer them to and from the house, it is also capable of undertaking light engineering and surveying work. The author has not yet been able to evaluate initial and operating costs, but considers that the "Pobble" could be made an economic proposition.

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    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 
  • Authors:
    • Rydill, L J
  • Publication Date: 1972

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Filing Info

  • Accession Number: 00035220
  • Record Type: Publication
  • Source Agency: United States Merchant Marine Academy
  • Files: TRIS
  • Created Date: Oct 27 1972 12:00AM