Coiled Tubing Real-Time Monitoring:
A New Era of Well Intervention and Workover Optimization
Coiled tubing is a unique fluid and tool conveyance means used to intervene throughout the entire well lifetime. Its flexibility of use is certainly one of the largest in the oil-and-gas industry, ranging from logging to stimulation to cleanout and even drilling. However, for the longest time, it was only seen as a rudimentary fluid conveyance system, despite its capability to service any well deviation.
With the development of instrumented tools for downhole point measurements and the use of fiber optics for distributed sensing, the recent advent of coiled tubing real-time monitoring has completely transformed this image. The access to live wellbore information—such as pressure, temperature, or flow—along with accurate depth control thanks to casing collar locator and gamma ray sensors have greatly enhanced fluid placement. Meanwhile, the ability to monitor the load, torque, and accelerations the bottomhole assembly is subjected to significantly improves the performance and possibility to use and manipulate downhole tools. Thanks to real-time monitoring, a whole new realm of optimization possibility was discovered.
This lecture describes the various real-time measurements that are available today during coiled tubing interventions and how they can be used to provide the industry with faster, safer, and more efficient operations while maximizing return on investment. A wide range of applications and examples will be discussed. Through them, one will be able to appreciate how coiled tubing has now entered a new era where the limits of operational optimization still have not been reached.
Pierre Ramondenc is the Well Intervention Domain Manager for Schlumberger, with over 10 years of oilfield experience. He has been involved in all aspects related to coiled tubing real-time telemetry, from tools creation to intervention design and execution to data interpretation. Pierre has been responsible for defining most of the coiled tubing intervention workflows that leverage real-time data. He has authored over 15 technical papers and patent applications on the topic. Pierre holds MS and PhD degrees in Civil and Environmental Engineering from the Georgia Institute of Technology. He serves as technical editor of SPE Production & Operations Journal.
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