Site: Mobil North Sea Ltd.
Grampian House, Union Row
Aberdeen AB1 1SA, Scotland
Telephone: 0224 855 000
Fax: 0224 855 577
Date Visited: May 14, 1993
Report Author: C. Brancart
J. Sampson (ONR London)
Donald G. Langrock; Development Engineering
Mobil is one of the users of the technology and hardware developed by firms with ocean-oriented products. In its position, Mobil can direct the technology to places where it is needed. The Mobil-FSSL Diverless Intervention System is a prime example of this operating mode.
The object of the Mobil Intervention program is to maintain a subsea "tree" (completion system) by an ROV in water depths to 1,000 m. The justification for this program is cost savings. For example, two cases were presented that review operating costs (see Table Mobil.1).
The capabilities of the Mobil-FSSL Diverless Intervention System are:
Two-Case Scenario for Operating Costs
(Monetary figures given in U.S. dollars)
The benefits derived from this capability are:
The Mobil-FSSL Diverless Intervention System is presently being tested and evaluated. The basic ROV is the Slingsby MRV, with add-on modules that triple its size. Results to date have been very encouraging.
Mobil identified the following technology areas that should be developed for future subsea completion system needs: