TRICONEX-3301 Application of Haiwell PLC in oilfield waterflood monitoring system

Key word: Haiwell(Haiwell) domestic PLC, remote IO, computer monitoring, ModBus communication protocol

I. Overview

TRICONEX-3301 Oilfield water injection monitoring project itself is not complicated, mainly to monitor the operation and process parameters of each part of the oilfield water injection system equipment, including pressure, temperature, flow, voltage, current, etc., according to the parameters of the situation set alarm and protect the safety of equipment.

Project features: There are many simulation points (88 points in this example project), and the monitoring points are scattered

Project requirements:

1. Stable and reliable system
2, powerful communication expansion ability
3, high real-time system
4. Low cost
5. Simple implementation and short construction period
6, through the configuration software display monitoring parameters,88 points reach the upper limit or lower limit need to alarm, of which 27 points reach the lower limit or upper limit, the need for emergency shutdown
7, 2 machines at the same time monitoring work, independent, 1 computer failure will not affect the monitoring of the system

Second, the choice of control system

TRICONEX-3301 There are many control systems that can be used, and there are many successful cases, generally speaking, mainly: PLC system, data acquisition system, single-chip microcomputer system

PLC system: For the general small PLC is unable to achieve this project, because the analog quantity point is more and more demanding communication expansion function, so the current use of medium-sized PLC, such as S7-300. The disadvantage is the relatively high cost

TRICONEX-3301 Data acquisition system: With strong scalability, it is ideal for decentralized remote installations such as the Adam module. The disadvantage is the lack of real-time and weak control ability

TRICONEX-3301 Single-chip system: designed for system development, the disadvantage is lack of flexibility, weak expansion ability

Reasons for choosing Haiwell PLC

1, Haiwell PLC through the CE certification system is stable and reliable, and cost-effective to save investment costs

2, programming is simple and convenient, through the built-in simulator simulation run debugging program greatly shortened the field debugging time

3, the sea analog module can be expanded locally in parallel, but also can be dispersed remote installation as a remote IO, is not limited by the expansion of AI/AO points, can fully realize the control of large point system.

4, the PLC supports 5 communication ports, the system is high real-time, the size of the communication volume does not affect the running speed of the program, the size of the program does not affect the speed of communication, all communication is completed by a single instruction, can be run at the same time without considering the communication port conflict, send and receive control, communication interruption processing and other problems, and has the alarm function for each node communication failure