The Smart System Will Improve the Operation of the Elkhovneft Pressure Maintenance System
Autonomous liquid injection meters will help prevent accidents.
In the oil and gas production department “Elkhovneft” PJSC “Tatneft” they are introducing autonomous meters NOTA-V, powered by solar batteries. They are necessary to maintain the reservoir pressure of the developed formations.
Information is collected and processed in real time using an automated supervisory control and management system (ASCMS). “Oil News” writes about this.
Today, the main method of injection control is to measure injectivity at the wellhead. Oilmen measure the volume of working agent pumped into the reservoir per unit of time. This data is used in the design and regulation of field development.
“This method has a number of disadvantages,” explains Syren BAGAUTDINOV, master of the production center at NGDU Elkhovneft. “It is necessary to carry out measurements directly at the well with visiting personnel.” He also notes that measurements have to be carried out periodically.
Therefore, Tatneft decided to improve the control of liquid injection. The new meters were developed by Almetyevsk LLC Scientific and Technical Center “Automation, Measurements, Engineering” (STC “A2I”). An automated injection control system will improve the reservoir pressure maintenance system (PMS).
The operating principle of NOTA-V flow meters is based on the movement of acoustic vibrations by a moving medium. As a result, the flow rate of fluid injected into the formation is calculated. The data is then transmitted to the pulse, discrete and digital outputs of the flow meter.
For greater efficiency, the meter has an archive. Non-volatile memory stores information about measurement results and the status of the device. Since not all wells have power sources, a decision was made to install stationary solar panels.
ASCMS continuously monitors the flow of injected water. Software analyzers perform mathematical and logical calculations based on the obtained parameters. The results of the analysis allow us to accurately determine the occurrence of a situation that requires the attention of specialists.
“During the operation of the autonomous NOTA-V meters, the time spent at the well by one operator was reduced by 15%,” notes Bagautdinov.
The workload of testing injection wells has also been reduced. This made it possible to conduct additional studies of the pickup characteristics of the TsA-320 unit. For example, when introducing a wellhead booster pump. Due to the introduction of an intelligent system, the coverage of studied wells has significantly increased.
