Development of real-time monitoring system forcoalbed methane exploitation parameters
In order to meet the demand of real-time monitoring of coalbed methane exploitation pa-rameters,a real-time monitoring system for coalbed methane exploitation parameters was designed.The system consists of downhole probe and software,which can realize real-time acquisition of velocity,pressure and temperature of wellbore annulus.The sensors,circuits and software programming are de-signed in detail in this paper.After the design and processing,the experimental well was used for experi-mental verification.The results show that the measuring ranges of pressure,flow rate and temperature are 0～10 MPa,0～5.8 m/s and-55～125℃respectively,and the corresponding measurement errors are 0.5%,3%and 0.5℃respectively.The research of this paper can synchronously collect multiple two-phase flow-related parameters underground,in order to conduct a combined analysis of multiple parame-ters and provide necessary data support for the formulation of exploitation technology.
万方数据
维普
