THE USE OF HIGH RESOLUTION ULTRASONIC WELL LOGGING TOOLS TO ENHANCE WELL INTEGRITY MANAGEMENT

Abstract

Quest Integrity has been operating its proprietary ultrasonic intelligent pigging technologies for the inspection of pipelines and tubular assets operated in the energy sectors for the past 20 years. Building on this technology platform, Quest Integrity has developed Quest Well Integrity X-CalliperTM (QWIXTM), a unique well logging tool that collects high resolution ultrasonic metal loss and geometry data sets for well casings. Opportunities to apply the technology in geothermal wells will provide a step change in the resolution and coverage of logging data available for the integrity management of geothermal well casings. The QWIX technology collects millions of data points per log to provide 100% high resolution coverage of the production casing for both internal and external surfaces. The coverage and quality of the data collected allows for the immediate evaluation of casing condition, accurate measurement of corrosion growth rates with multiple logs over time and enables the performance of fitness-for-service and remaining life assessment calculations. This paper presents an overview of the well logging technology along with a case study covering its application in the inspection and engineering assessment of Coal Seam Gas wells.