# Development of a Digital Well Management System
## 2 Materials and Methods  
Consider the case when a production well is operated by an ESP with a modern control station. The information coming from the measuring instruments to the control station is analyzed to turn off the wells when the parameter values go out of the allowable range. Below, a more modern way of exchanging information with an increase in the number of its sources and the use of machine learning elements is proposed for more efficient management of a production well. The information exchange scheme is shown in Figure 2.  
Figure 1: Distribution of the mining fund by the method of operation. Within the framework of the proposed scheme, a decomposition of the control station into constant and variable parts is proposed, similar to the proposal in [22]. In this case, the well control module becomes a permanent part of the control station, and the variable parts (central well cluster control module, server, workstations) of all wells are combined into an industrial data transmission network [23; 24]. The sources of information about the operation of the well and other equipment are digital sensors of pressure, temperature, distance, etc., installed at technological facilities and transmitting information wirelessly or wirelessly. The collection of information about the operation of fishing equipment is carried out via an ESP cable sent directly to ACS. ACS can be divided into three levels of automation: \"lower\", \"middle\" and \"upper\". Let's consider each level separately. The lower level of automation includes analog and discrete sensors, shut-off and control valves, actuators and implements the functions of converting physical parameters into electrical and digital signals and vice versa. The middle level is the level of pad and downhole programmable logic controllers (PLC)--designed to collect information from the process equipment of a well pad, control submersible pumping equipment. It includes data transmission modules, converters, switches, controllers. One production well cluster equipped with ECP, SRP and ESP is equipped with several well control modules and one main well cluster control module (WCS). The well control module consists of a power unit and a PLC. The main well cluster control module collects and analyzes data from the equipment that is part of the well cluster and transfers data to the upper-level system, and also ensures the optimal operation of the production equipment by analyzing the measured and calculated parameters using the mathematical model of the well. Optimization of the operating mode occurs by maintaining the operating mode of the well by frequency control (described in Sections 2.1.2 and 2.1.3). The WCS contains a group controller and a PLC for each production well, which implement software and automatic control of the energy-efficient operation of downhole pumping equipment in continuous, periodic and short-term periodic well operation modes. Thanks to the operation of the WCS, it is also possible to adjust the operating parameters  
Figure 2: Automated well cluster control system. of peripheral equipment, based on the operating mode of production wells. So, when identifying the intensive formation of paraffin deposits, it is possible to change the operating mode of automatic devices for cleaning pipe to adjust the interval or frequency of cleaning the pipe, change the performance of wellhead inhibitor dosing units. The upper level includes workstations for operational personnel, data processing servers and implements information, computing and control functions through software.