【First in China】The first high-sulfur wet gas compression station in the Puguang Gas Field has been operating at full capacity for a total of 1,000 hours

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As of October 21, 2024, the three compressors at Station No. 1 of the main wet gas compression project in the Puguang Gas Field – China’s first high-sulfur wet gas compression station – have been operating at full capacity for a total of 1,000 hours. This has helped increase the gas output from the field by 90.19 million cubic meters, providing support for the field to meet its annual targets. On September 5, 2024, the feed-in trial run of Booster Station No. 1 was successful on the first attempt, marking the development of a unique wet gas boosting technology for high-sulfur gas reservoirs at the Puguang Gas Field. This technology lays a solid foundation for the safe and stable long-term development of the gas field, and it also provides a solution for significantly improving recovery rates in the later stages of development of similar gas fields in China. Station No. 1 uses domestically leading technology and equipment, adopts a \"unmanned\" operation mode, and boasts a high safety factor during operation. Nevertheless, in order to further improve the stable operation of this booster station, the Gas Production Plant of Puguang Branch organized technical personnel to carry out 24-hour monitoring of the station, implemented a 6-hour inspection routine for the relevant positions, and conducted leak checks twice a day to ensure that the three compression units at the station were operating properly. The current gas field is in a critical phase focused on ensuring safety and accelerating production. To increase natural gas output, the gas production facility continuously raises the processing capacity of its compression units for natural gas. However, as the amount of natural gas processed increases, gas wells also carry out large amounts of formation water. “We need to treat these effluents to meet the required standards before reinjecting them back into the formation. If too much produced water is generated, exceeding the maximum reinjection capacity of the reinjection wells, it becomes necessary to control water production in the gas wells, which in turn affects the release of production capacity. ”Liu Huan, deputy manager of the Puguang Gas Production Management Area at the gas production plant, said. To address this challenge, technicians control the water production volume of gas wells by means such as regulating the cage-type throttle valves at the wellhead, and carry out batch processing operations on a regular basis to promptly remove debris and accumulated liquid from the gas transmission pipelines, thereby improving the efficiency of gas collection and transportation ； On the other hand, they actively explored the balance between gas volume and water volume; after numerous theoretical analyses and field tests, they ultimately concluded that the best effect in increasing gas production is achieved when the daily gas output from the gas wells along Line 1 is 2.4 million cubic meters and the daily water output is 230 cubic meters. “Compared to before the commissioning of Booster Station No. 1, the gas wells along Pipeline No. 1 are now producing an additional 500,000 cubic meters of natural gas per day, demonstrating a significant increase in production; they have thus become a ‘new piece’ in the capacity framework of the Puguang Gas Field. ”Liu Huan said. “Next, we will focus on the task of ensuring a stable supply of natural gas this winter and next spring, and take proactive measures to carry out work related to winter protection and insulation. We will continue to maintain strict control over the safety, operation, and quality aspects of Station No. 1, thereby contributing fully to the high-quality implementation of the 100-day campaign aimed at ensuring safety and accelerating production in the gas field. We will also make active contributions to achieving the production targets set out in the group company’s seven-year action plan for natural gas production. ”Liu Fangjian, the deputy director of the gas production plant, said.