Abstract

Oilfield automation information system including remote monitoring wells, distribution lines automation systems, oil pipeline leak monitoring, gathering and transportation monitoring stations, such as library automation in four parts, and its aim is to use the site monitoring system, the source of automated data collection, with oil now network resources are automatically loaded into the plant-level real-time database applications for all levels of management data to provide an open platform, so that the production and management and master control in a timely and dynamic production in order to achieve the automation of the entire production process; and can obtain real-time Statistical data, analysis, optimization, so as to guarantee the normal operation of production equipment, reduce production costs to provide an important basis for discussion.

1. System Requirements

Electric submersible pump for wells shut down, voltage over-voltage, under voltage, current flow, less on the well-head back pressure too high, too low, such as anomaly detection alarm; of pumping wells shutdown, voltage over-voltage, under voltage, over current flow, less on the well-head back pressure too high, too low, too low load anomaly detection and other alarm.Instantaneous line calls, but also as a warning anomalies.
Production team to monitor local inquiries in accordance with administrative privileges can only work well in this team, and real-time receipt, and work-related communication module, and distribution line work.
Indicator diagram pumping wells, the current map (or the power diagram), in addition to regular collection preservation, the recovery team can be the basis of production of oil wells manually select number, ask for real-time indicator diagram, the current map (or power chart).
When the electric submersible pump wells overload shutdown failure appears, it will be within a minute of downtime before the three-phase current (Ia, Ib, Ic) with the line voltage (for example, Uab) data From the database, in order to pump the data to provide an analysis of fault diagnosis.
Production team to monitor machines with static data, such as browsing and editing functions: including unit type, configuration, electric models, the well No. Well, stroke, line name, range, the lower limit alarm, the lower limit of the status of oil wells and other data, and to add new oil wells, production wells to delete, modify operation of the basic data well.
System has the indicator diagram, the current map (or the power diagram), current, voltage and other parameters of the real-time trend, historical trend monitoring function, can easily understand the changes in the parameters of time to facilitate the rapid analysis.
System should be the introduction of geographical concepts graphics systems to reflect the geographic information graphics, visual images can be reflected in the work of the whole oil situation.
Oil Production Plant, mining and related departments to query through the browser works, mining, the state of team work well with real-time data, stop the day well, the boot-up statistics, as well as historical data and historical records.
SU wells to pump the main voltage, current, well back pressure, temperature and other parameters of well-head measurements.Pumping wells mainly SU indicator diagram, voltage, current, well back pressure, temperature and other parameters of wellhead measurement, and retention of remote start and stop functions well.
Wellhead motor controller with active power, reactive power, power factor, and daily consumption of computing power and other parameters.

2. System Architecture

Wellhead controller indicator diagram collection wells, electricity, back pressure, temperature and other parameters, the CDMA / GPRS network or data radio to CDMA / GPRS data-transmission line method or the radio interface (RS232) communications access to production plant machines, real-time database server, factories and mines of the computer unit can be used client-side browser or the way a visit to the real-time database.Wellhead controller to change the past, only to take voltage and current RMS to model, but calculation of electric power real-time acquisition parameters for the distribution lines to provide the necessary automation system data.
Remote Terminal 6kV distribution lines, machine production plant communications, real-time database, distribution SCADA application servers, workstations, etc., the use of CDMA / GPRS network composed of distribution line automation system, distribution lines to achieve real-time performance monitoring and management .
Gathering Station library automation system and pipeline leak detection systems are relatively independent of a system, the LAN system of production data collection Oil Production Plant From real-time database, the realization of online data sharing.
Through the B / S mode, you can enable managers to view and query data in real-time plant-wide, to keep abreast of the situation at the scene of production.Through C / S mode of production data for statistical analysis.
In order to ensure consistency of the system clock, the GPS system is equipped with a dedicated clock for the synchronous system clock of the whole network, including from time to time with the FTU, SU when the distance of.
Machine communication system, real-time database server, application server and other important node hot standby dual machine configuration, the host and prepared to maintain the consistency of data between machines so that owners can be prepared by machine failure can be run at any time to switch.Data center to configure dual network redundancy and isolation LAN and the oil fields, when the main network fails, prepare to switch network-based network can be run at any time.Network security design, the use of firewalls, data encryption, network quarantine, user rights management technology and means to ensure network and information security.User rights management system users, including database management, user registration, user-level settings, user settings, such as the main contents of permissions.
At present, oil network has established a system of HIV prevention, HIV prevention and control of the system is therefore in accordance with a standardized implementation of oil.

3. Software Description

Oil well production monitoring system is installed in the monitoring wells on the terminal, installed in the production of plant-level communications and data servers, such as recovery teams to monitor the user interface, on-site communications systems and management of communication system composed of five parts.System as follows:

Wells to monitor the system software by the communications software, data processing software, order processing software, alarm and event processing software, security, control software, graphics software and graphics interface software components.
Communication software is mainly responsible for the adoption of the Statute and set the communications interface to communicate with field devices, access to the site of data collection devices or field devices to send data and instructions.
Data-processing software will be primarily responsible for communication software has been the scene of the raw data collected by the type of point conversion, to determine whether the need to generate alarm and data storage management.
Order-processing software is mainly responsible for dealing with an order under the users will be converted to a command control communications server command, and coordination of multiple users at the same time issued an order for the relationship.
Alarm and event processing software is responsible for the achievement of the intended alarm effect of warning and record events, store.
Security control system software responsible for the management of user authentication and authorization information, the system user authentication and permissions check.
Graphical interface software and graphics software used to generate and display the user graphical interface.

4. System Flow for:

Wells by the oil terminal is responsible for data collection, oil terminal load communication module, the data collected by the communication module to the Oil Production Plant Information Center is located in the communications server.After treatment, the data into real-time database.Oil Production Plant Application Server users access to system services, application server access to real-time database access to data.
Operation initiated by the user, such as hand-response test data, configuration changes and so on, by the application server for processing and notify the communication server to perform the corresponding action.
(1) Data Acquisition Data Acquisition Timing: can be collected by a variety of delivery channels to the main station telemetry, remote, power other types of degrees and the measured data.System of regular oil terminal data calls, calls can cycle diagram, the volume of current plans and other units were set up in minutes, minimum of 1 minute, a maximum of 255 minutes;
On-Demand Data Collection: Oil Production Plant user terminals can be called at any time a request for data or wells;
Communication control functions: start / stop on the well data collection terminals, switch the channel, such as end-use; channel quality monitoring and fault diagnosis, communication flow calculation;
GPS for time: the clock access to GPS signals, from time to time a unified system-wide clock, and the oil terminal when sent to the order; Statute to support a wide range of communications, a variety of communication channels; Add / Remove oil terminals, communication terminals modify parameters, such as address, the Statute of communication, data calls, such as cycle; modified oil terminal parameters, such as a variety of alarm limits, stroke unit, red times, and other parameters of the sensor range, and issued the necessary parameters to the oil terminal;
(2) data-processing functions of the police to deal with matters of functions: analog system can be set up alarm, the lower limit of the effective maximum and minimum levels, when more data can be generated when the alarm limits records.The alarm sound can be defined, live voice alarm is given;
Event log, the system records all user operations, communications, alarm events and terminals;
Cycle data of different data types can be set to every variable that is kept in 10 minutes, 30 minutes, 60 minutes (save cycle acquisition cycle should be greater than or equal to);
Rights management.Are authorized to operate all systems control;
(3) man-machine interface functions of the interface cycle show: authorized users can choose to oil wells, so that basic information can be automatically cycle display interface shows the time in between 5 seconds -30 seconds set up in seconds;
Alarm occurs, alarm screen automatically launched, and accompanied by sound or voice alarm;
Shows the combination of well location information, such as on / off wells, the basic operation of data;
Shows the combination of geographical location associated with the oil wells to run power lines, such as whether the power failure, etc.;
Generation time of the acquisition parameters of the curve;
Display indicator diagram: diagram of superposition and compared side by side;
Calculation functions: to support the common functions function;
Comprehensive historical data inquiries and generate statements;
Kai remote on / off wells (reserved function)
(4) system maintenance functions for the maintenance of wells to provide hand-held terminal end in order to facilitate the field maintenance, and information networks in the Council fails to receive the scene when the alarm information;
(5) statements of function statement formats can be customized to generate EXCEL statements.