A model of a Semi-Submersible Drilling with Drilling Riser System was developed in ORCAFLEX to obtain the Bending Moment, Shear Force and the Effective Riser Tension at the mudline. This is to overcome various dis-advantages of the Portland cement in deep water oil/gas well applications. A Marine-Grade Resin for securing the wellbore top casings than the API Class G cement grout is studied at a deep water field named ‘Kikeh’ which is located offshore Sabah, East Malaysia in the South China Sea. In this paper, a case study on the application of alternate material, i.e. Subsea Wellhead serves as an access to the wellbore while the conductor is to sustain the wellbore integrity in all phases of an offshore field development until Plugging and Abandonment. One of the most affected systems due to this environmental condition is Subsea Wellheads or Subsea Wellhead/Conductor Systems experiencing more fatigue induced damage problems than their application in continental shelves.
It has been found that the application of Marine-Grade Resin as an alternative return material is producing better fatigue life than placing the API Class G cement returns inside the annulus.
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