Located in Xuanhan County, Dazhou, the Tieshanpo gas field is a "treasure of oil and gas" hidden in the dense mountain forest, which is the complete gas field with the highest hydrogen sulfide content that has been put into production in China, and is also the first high-sulfur gas field to achieve unattended, laying a solid foundation for the high-quality development of ultra-high sulfur gas fields in the mainland.
The project team of Tieshanpo gas field set up video surveillance at an interval of 500 meters to lay a "heaven and earth net", and the staff can use the safety supervision platform to achieve on-site intelligent monitoring.
In order to promote the development of digital intelligence and empower safe production with science and technology, PetroChina Southwest Oil & Gas Field Company has created a new model of digital "one map" HSE supervision. In the second issue of "Xiyou Science and Technology Innovation Force", we will unveil the secret of the "Anyan Project" and see the birth of the "Xiyou Model" of intelligent safety supervision and comprehensive management.
Southwest Oil & Gas Field "Anyan Project"
Break down information silos
Build a new model of digital "one map" HSE supervision
The Ministry of Industry and Information Technology and the Ministry of Emergency Management put forward the "Industrial Internet + Safe Production" action plan, and Sichuan further promoted the integration of a new generation of information technology and manufacturing, all of which are the core and essential requirements for the high-quality development of industrial enterprises.
As the largest natural gas production enterprise in southwest China, the exploration and development area of Southwest Oil and Gas Field Company spans Sichuan and Chongqing, with dense population, complex and diverse geology and landforms, and a wide area.
In order to further promote digital transformation and build a "big supervision" pattern under the "oil company" model, as the first batch of pilot units of China National Petroleum Corporation, in November 2022, the "Anyan Project" of Southwest Oil and Gas Field Company was officially put into operation, marking the completion and operation of the first set of intelligent safety supervision and integrated management platform at the company level in oil and gas field areas in China.
Southwest Oil & Gas Field "Anyan Project"
It is understood that the Anyan Project is an intelligent platform that integrates AI algorithms and data models, breaking the information silo and building a new model of HSE supervision of the company's digital "one map". At present, Anyan Engineering has formed 6 modules and 12 major functions, which can provide monitoring and intelligent early warning of safety risks, and at the same time, combined with safety situation data perception, it can carry out full-time, full-time domain and full-coverage monitoring at the production site and construction site, so as to realize the unified collection, sorting and analysis of HSE information, and provide support for safe production and safety decision-making.
Southwest Oil & Gas Field "Anyan Project"
Iterative modeling training
AI recognition accuracy increased from 20% to 90.2%
Qin Lin, a first-class engineer of the Institute of Safety, Environmental Protection and Technical Supervision of Southwest Oil and Gas Field Company, who mainly participated in the construction of the Anyan project, said that the "Anyan Project" has gone through decades of preliminary research and has now successfully achieved the first in China in a number of technologies.
In fact, the entire construction stage of the Anyan project is in the epidemic period, Qin Lin introduced that all the cameras of the project, including the transmission line layout points, are multi-faceted, covering more than 2,000 points in Sichuan, Chongqing and Yunnan, and the amount of work is huge.
In addition to the difficulty of construction, the improvement of the accuracy and recognition rate of the entire program software of Anyan Engineering is also a major problem encountered by Qin Lin and the entire project team.
Southwest Oil & Gas Field "Anyan Project"
"There are 13 kinds of automatic identification systems in the Anyan project, several of which are the first AI recognition methods we have in China for the characteristics of the petroleum industry, which is equivalent to the development and application of new technologies," Qin Lin said, the whole process requires a large number of samples for analysis, in order to improve the recognition efficiency, the project team designed a lot of sample information on the spot, especially under complex conditions, and constantly carried out model training. According to statistics, a total of more than 120 GB of video data from 13 scenes, more than 140 training pictures were cleaned, 1,780 iterations were completed, and more than 20,000 optimization algorithms were optimized, and the recognition accuracy increased from less than 20% at the beginning of trial operation to 90.2% at present.
Since the trial operation of the Anyan Project, for the production and construction site of Southwest Oil and Gas Field Company, the reporting and disposal time of violations has been increased from daily and weekly to minute, which provides a solid technical guarantee for timely correction of violations and prevention of accidents.
The real-time capture, intelligent identification and active early warning of on-site violations also greatly save supervision human resources, improve the quality and efficiency of supervision, effectively prevent and control safety risks, and implement electronic sand table to perceive risks and optimize personnel deployment. According to Qin Lin's description, the Anyan project is like a "pair of eyes" staring at the construction personnel, and this deterrent effect objectively also improves safety awareness and standardizes safety behavior.
Southwest Oil & Gas Field "Anyan Project"
Focus on scientific and technological research
The digital transformation of security management and control makes supervision free of blind spots
At 9 a.m. on December 14, 2023, the annual natural gas output of Southwest Oil and Gas Field Company exceeded 40 billion cubic meters, reaching 40,000.1 million cubic meters. This is another milestone after the annual natural gas production exceeded 30 billion cubic meters in 2020, marking the official completion of the first atmospheric area with an annual output of 40 billion cubic meters in the southwest of the mainland. Conventional gas, shale gas, and tight gas go hand in hand, running at a new speed.
The production growth momentum of Southwest Oil and Gas Field Company is strong, and various gas fields are staging a big scene of natural gas development. According to Qin Lin, since the launch of the Anyan project, it has been fully applied to the production site and construction site of Southwest Oil and Gas Field Company, "At the peak, the company had more than 200 project teams operating at the same time.
The Tieshanpo gas field is a typical case. The Tieshanpo ultra-high sulfur gas field, which is built according to the standard of "one gas field, one control center", makes full use of the safety management and control system of the Anyan project, and has developed an advanced industrial automatic control system to carry out centralized monitoring, control and scheduling management of the production and operation data of the entire gas field, and can realize the interlocking shutdown and venting of the whole gas reservoir in an emergency. At present, the intelligent system of the Tieshanpo gas field is relatively mature and can be directly applied to the development site of other high-sulfur gas fields.
In the northwest of the Sichuan Basin, the Jiaotan gas reservoir in the Jiange block is also an ultra-deep and high-sulfur gas field, and the central control hall of Cangxi Natural Gas Purification Plant No. 2, which is built with high standards and high quality, integrates operation data, production scheduling, operation control, video surveillance, abnormal alarm and other functions on a large screen to realize full-time monitoring of the plant, and if there are violations on the site, it is clearly visible. The application of the Anyan project has enabled Southwest Oil and Gas Field Company's first self-operated ultra-deep and high sulfur gas reservoir to achieve blind spot supervision.
From dynamic perception to intelligent early warning, from real-time monitoring to linkage disposal, with the continuous development of safety production technology promoted by the industrial Internet, Southwest Oil & Gas Field Company continues to strengthen the leading effect to create an industry benchmark, focusing on the digital transformation of safety management and control.
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