On the Gjøa oil and gas field, the operator, GDF Suez, has installed a Subsea Condition and Performance Monitoring (CPM). The CPM system is designed to maximize production uptime and maximize asset availability. Access to qualified and continuously-updated knowledge about integrity of the subsea assets are of utmost importance for making the right decisions at the right time in terms of maximizing profitability of the reservoir development.The CPM system collects all subsea data, both process and housekeeping data, in real time. It takes integrity monitoring beyond traditional key performance indicators (KPI) by taking a holistic approach and utilizing all available data and information, where design parameters, criticality, system experience and operating philosophy is modeled and built into what is defined as Technical Condition Index (TCI).The TCI enables the user to detect problems from the large amount of subsea data available, and to determine how severely it impacts production and system availability. The technology utilizes existing instrumentation. By modeling each TCI, assigning weights, building the hierarchic model and defining the aggregation rules, the CPM system and service is encapsulating the in-depth knowledge about the subsea production facility, making CPM an excellent tool for decision making. Finally, both Operators of the field and the support team of the subsea contractor will, through online access to the same tool, jointly be able to take the best decisions for the maintenance of the field. GDF Suez will explain the positive impact and their experience of using the CPM on the daily operations of the Gjøa field in the North Sea in terms of costs, technology understanding and productivity. Operational examples will be shared where the CPM played a key role.
Currently there have been seen requirements of a design lifetime far beyond the 20-25Y of today, a strong driver is that many fields have their lifetime extended due to they contain remaining resources that can be recovered with IOR measures. As a result, some operators consider extending their Design Lifetime requirement significantly. This paper briefly discusses the reason for this requirement and its consequences from a Subsea Production System suppliers view. Further is given an alternative approach to a long set design lifetime, where the goal is an undefined lifetime based on monitoring and maintainability. The concept is outlined and consequences are discussed. The following issues are covered: Inspection Monitoring Design for maintenance Need for New Technology The paper addresses Operator and Subsea Production System suppliers' technical decisions makers. The paper is based on a Subsea Production System suppliers experience and challenges through Delivery projects, Lifetime and Front End studies. The paper will conclude that a set Design Lifetime considerably longer than todays is not favorable and that the proposed new approach is a better choice. Further, is this approach also recommended as a result of experience with Lifetime Extensions studies, as the new approach will simplify this kind of work considerably. This is due to monitoring and documentation of status on a regular basis, is an inherent part of the approach proposed. The paper brings into the debate a new approach to Design Lifetime.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.