Downhole Power Generation and Wireless Communications for Intelligent Completions Applications. Final Report October 1, 2002 through August 31, 2005

摘要

This paper describes a new real time downhole wireless pressure and temperature gauge for the optimization of natural gas production that was developed under a grant from the Department of Energy. The high temperature, high pressure system can be deployed anywhere in the wellbore for permanent deep gas production monitoring applications. Monitoring and control of the processes required to produce hydrocarbons constitutes an on going concern in the industry. This concern is due in part to the enormous expenses and risks associated with the execution of those processes, as well as environmental and safety factors. The ability to provide wireless monitoring of wellbore parameters has also increased completion reliability and decreased completion costs. The new gauge utilizes acoustic waves for communications and low power electronics and sensors to acquire and process in real time data related to production and geological formation parameters. The system utilizes the production tubing as the medium for the transmission of the information from downhole to the surface. The system also uses the vibration and flow generated downhole to create electricity to charge batteries downhole to operate the system. The project was completed successfully and multiple applications have already been identified for permanent and service applications of the technology.