Field Trial Results for 3rd Barrier Evaluation Using Technology of Individual Electromagnetic Metal Loss Logging Validated by Actual Excavations
- A. Yugay (Abu Dhabi Co For Onshore Petroleum Operations Ltd) | H. B. Daghmouni (Abu Dhabi Co For Onshore Petroleum Operations Ltd) | A. B. Ali (Abu Dhabi Co For Onshore Petroleum Operations Ltd) | M. Volkov (TGT Oil and Gas Services) | S. J. Sparke (TGT Oil and Gas Services)
- Document ID
- Society of Petroleum Engineers
- Abu Dhabi International Petroleum Exhibition & Conference, 13-16 November , Abu Dhabi, UAE
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Petroleum Engineers
- 2 Well completion, 7.1 Asset and Portfolio Management, 2.10.4 Subsurface Corrosion, 4.2.3 Materials and Corrosion, 2.1.3 Completion Equipment, 7 Management and Information, 2.10 Well Integrity, 6.3 Safety, 7.2 Risk Management and Decision-Making, 7.2.1 Risk, Uncertainty and Risk Assessment, 3 Production and Well Operations, 7.1.8 Asset Integrity, 3 Production and Well Operations
- Well Integrity, WIMS, EmPulse, Surface Casing Inspection, Corrosion Logging
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- 96 since 2007
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Shallow casing corrosion in onshore wells is a well-known phenomenon throughout the Arabian Peninsula. It happens when the carbon steel is exposed to corrosive environment (including moisture and oxygen) due to insufficient barrier protection and isolation. The issue requires periodical casing excavation and inspection which are time-consuming operations with different teams involved. This document describes successful field validation of the alternative cost-efficient method of casing inspection using corrosion logging technology.
The method of individual electromagnetic metal loss logging for 3 barriers became recently available. It is electromagnetic-based technology which was modified to be able to provide multiple barrier evaluation. 3 wells were selected for trial logging and later were excavated to compare the logging results with actual findings (physical check). Results of the trial test confirmed applicability of this costefficient technology for Company Surface Casing Inspection. The new method allows extending casing inspection to unlimited depth with less time required and less risks associated. The opportunity to evaluate conditions of all three barriers without retrieving the tubing gives a lot of benefits for the entire Well Integrity Management process; it may include actual corrosion rate measurements of all effective barriers, SAP (Sustained Annulus Pressure) investigations, and risk assessments. Field validation of this technology had a positive impact on Operator's Well Integrity process, giving more options for proactive Well Integrity Management and resulting in total cost reduction and improved HSE (Health, Safety and Environment) performance. Additionally, it helped to identify a serious gap in the existing conventional process of Surface Casing Inspection.
This document presents the results of technology validation performed in the third barrier of a producing well in real field conditions. Additionally, it contains specific recommendations for other areas of application of this technology for maximum benefits, like three-barrier evaluation prior to workover and multiple barrier time lapse corrosion monitoring.
|File Size||2 MB||Number of Pages||13|
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