Adeyemi Adebajo, Daniel Emuchay, Olubunmi Adeyinka, Damilola Oseni, and Babafemi Onasanya, Oando Oil Limited; Promise Wopara, Nigerian Agip Oil Company; Victor Onyekwere and Chris MacDonald, Peloton
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This paper was prepared for presentation at the Nigeria Annual International Conference and Exhibition originally scheduled to be held in Victoria Island, Lagos, Nigeria, 11 – 13 August 2020. Due to COVID-19 the physical event was not held. The official proceedings were published online on 11 August 2020.
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Abstract
The NAOC JV, comprising 20% NAOC, 20% Oando Oil Ltd, and 60% NPDC working interests, owns over 400 wells in OML 60 – 63 within the Niger Delta region of Nigeria. To ensure well integrity and protect property, lives and the environment throughout the well life cycle, first and second line wellhead maintenance activities involving greasing, leak testing, function testing, repair and replacement of tree valves and down-hole safety valves (DHSV) are carried out based on approved well integrity programs.
The Well Integrity Management System (WIMS) provides guidelines for first line wellhead maintenance activities frequency in line with API recommendations; second line wellhead maintenance is carried out on an as needed basis to ensure the integrity of all wells throughout their lifecycles.
WIMS implementation using WellView is a smart well integrity surveillance system that generates and sends auto emails to selected users on well integrity issues based on preset criteria for leak rates and casing pressure limits. This has been effective in timely identification of issues before they become major problems. It also triggers proactive actions on critical wellhead system components that are nearing failure based on results of analyses.
This paper describes the workflow, strategy adopted by our IT team, coding developed by Peloton WellView consultants and issues encountered in achieving this feat; current issues and proposed solutions are also discussed.
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