The Total Control of Well Integrity Management
- Liane Smith (Intetech Ltd.) | Dragan Zivko Milanovic (Intetech Ltd.)
- Document ID
- Society of Petroleum Engineers
- Abu Dhabi International Petroleum Exhibition and Conference, 3-6 November, Abu Dhabi, UAE
- Publication Date
- Document Type
- Conference Paper
- 2008. Society of Petroleum Engineers
- 5.6.1 Open hole/cased hole log analysis, 2.4.3 Sand/Solids Control, 4.2 Pipelines, Flowlines and Risers, 7.1.8 Asset Integrity, 4.3.4 Scale, 3 Production and Well Operations, 1.6.1 Drilling Operation Management, 1.14.1 Casing Design, 6.3.3 Operational Safety, 4.1.5 Processing Equipment, 4.2.3 Materials and Corrosion, 4.4.2 SCADA, 5.2 Reservoir Fluid Dynamics
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This paper describes a web-based program which provides a comprehensive approach to well integrity management covering all potential integrity threats to the whole well. This "cradle-to-grave?? software, the Intetech Well Integrity Toolkit (iWIT), provides well information and data analysis for timely, informed, decision-making. Using its own or existing client databases, this software carries out quantitative data analysis in real-time and provides feedback to the operator about the condition of individual wells and also overviews of the whole field integrity status.
The iWIT software has been used in fields with less than 50 up to over 1600 wells. Installations have been made in primary recovery fields to tertiary recovery fields, both onshore and offshore. The software has been installed in new and mature fields; some fields with no automation in place and some which have been automated for over a decade.
All the operators that have installed the software to date have decided to expand its use, either to incorporate more assets (e.g. the integrity management of the flowlines up to the manifold) and/or to install the system throughout their group operations internationally. Current installations include two Gulf operators in Abu Dhabi and Qatar.
The management of well integrity is a vital element in the successful, economic and safe operation of all assets. Data relevant to well integrity is widespread, including the safety critical elements test results; monitoring of annulus pressures; evaluation of tubing and casing integrity; inspection results from well logs; evaluation of scaling risks etc. The management of, and continuous evaluation of, this vast range of data presents a huge challenge. The system described in this paper has met that challenge comprehensively.
The essential function of an oil and gas producing/injecting well is to transport hydrocarbons/fluids in a cost effective and safe manner. The importance of well integrity total control has been recognized and accepted as a key part of safe operations for a long time. Significant improvements concerning both well design and operating procedures have been made. Nevertheless, the integrity of all well barrier components is continuously threatened and requires great vigilance to ensure continuous active control without the risk of unintentional leakage of well's fluid to the environment.
A well has the potential to create hazardous events, and hence well risk must be acceptable. The release of inflammable/explosive fluids (hydrocarbons) to the surroundings is by far the most significant risk factor.
|File Size||253 KB||Number of Pages||9|