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Intelligent Pipe: A Multi-Annuli Monitoring Solution


 Well integrity has always been a challenge for the oil and gas industry. The main concern for operators is to prevent catastrophic well failure during their operations, which could have a dramatic impact on the environment and put people working on site at risk. The industry is therefore looking for new solutions to monitor well activity in real time, especially for subsea wells where the annuli are inaccessible. By anticipating any abnormal behavior, operators will then be able to act faster and adapt their operations to avoid any damage to the well.
 The multi-annulus monitoring solution will provide pressure and temperature for each well annulus. These key parameters are captured by innovative sensors based on MEMS technology. An innovative transmission methodology is used that allows power supply and data retrieval even for annuli beyond the "B-annulus". All electronic elements of the solution will be qualified through the international recommendation (called AWES) which consists of a series of mechanical and long-term tests to ensure that our system will survive for 20 years at 125°C.
 This paper will present the results of the different tests carried out to qualify the electronics, those performed to qualify the performance of the multi-annulus transmission, as well as the results of the first field trial carried out with this product. During this first trial, the operator encountered several operational issues. Our system provided actual data that was used in their own simulation to investigate the root causes of these operational difficulties. This clearly demonstrated the importance of having data from inside the well to confirm and complete the well simulation. This article describes the development of a continuous monitoring solution through to its deployment.
 This system offers oil and gas operators a new tool to monitor their wells and enhance the safety of their operations. It could be used in all storage applications, especially those related to the energy transition, including CCS and H2 storage.