Maintenance strategy for functional products

Abstract

The Oil and Gas industry operating on the Norwegian continental shelf is entering the tail-end phase of oil and gas production. This cause an increase of the operational unit costs due to reduction in production volumes and increasing costs related to operation and maintenance activities. In order to extend oil and gas production lifetime, operators and involved parties had to investigate alternative solutions. This challenge is solved either by increasing production volumes from reservoir and/or reduce operational costs through improving/optimizing operation and maintenance performance for the production facility, which enable the operators to extend the oil and gas production period. Optimizing operation and maintenance performance can be achieved by optimizing service delivery processes. Thus the operator improves the effectiveness, efficiency and quality of deliverables, which will leads to improve the company profit. This thesis attempts to understand and design maintenance strategy that could be used for oil and gas production lines consisting of functional products/performance based service delivery. Different service delivery strategies are presented, with respect to product and service delivery, and characterized each of these service delivery strategic models. Critical challenges related to maintenance strategy of performance based service deliveries are presented, in order to identify influence factors of maintenance strategy design. Maintenance management system for functional products is suggested and established in order to achieve operation and maintenance objectives. A case study on Offshore Mobile Drilling Unit is carried out in order to understand how to design maintenance strategy of performance service delivery. In addition, responsibilities of operating company and contractor are defined, with respect to the operation, maintenance activities including service support system. The case study is divided into four parts. A basic offshore rotary rig is presented in the first part. Drilling and well professionals are presented in the second part. Semi-submersible mobile rig unit contract is presented in the third part while conducted guided interview performed, and questionnaire is answered by interviewee can be found in the fourth.