【Ten Years of Great Development in Chemical Engineering Equipment】1870–2024: The \"special casing thread\" independently developed by the Shaanxi Yanchang Gas Field”

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Safety first. Prevention first: Let’s praise and encourage the achievements made in China’s chemical industry in terms of technology and equipment. **********************【Ten Years of Great Development in Chemical Equipment】Regular updates and summaries are available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Industry Forum Website) ***************** On June 4th, the “special casing couplings” developed independently by the technical staff of Shaanxi Yanchang Gas Field Company were undergoing authoritative evaluation tests at the Engineering Materials Research Institute of PetroChina Corporation. After completing the testing, a **patent** will be applied for, and it will then be licensed free of charge to domestic companies involved in casing manufacturing, so as to use this technology to promote the adoption of unified standards for special fasteners in the casing manufacturing industry. According to the introduction, the \"special casing buckle\" is a T-shaped gas-sealing buckle, primarily used for coiled-tube pulled fracturing operations in oil and gas wells located in sulfur-rich areas of gas fields, as well as in deep wells with 110-grade casing. As a user with a significant market presence in the country, Shaanxi Yanchang Gas Field Company will promote this type of \"special casing coupling\" free of charge in the future, thereby helping companies that produce T-shaped gas sealing couplings to standardize their production processes, reduce research and development costs, minimize resource waste, and enhance the safety of on-site operations. At the same time, it promotes the adoption of coiled tubing fracturing in the oil and gas industry, helping oil and gas fields to improve the effectiveness of well renovation, shorten well construction times, and accelerate the release of production capacity. “This year is a crucial one for fulfilling the company’s goal of producing 15 billion cubic meters of gas, and it is also a year when efforts must be made to raise natural gas production to over 10 billion cubic meters. Facing such substantial production targets, reducing the time required for well construction and accelerating the time it takes for wells to reach full production capacity have become urgent challenges that the technical staff at the gas field companies need to address. ”Xu Zhiwei, deputy chief engineer of the Development Department at the gas field company, explained that the company’s technical staff discovered during their work that, for a long time, due to the lack of unified manufacturing standards for T-type gas seals in China, T-type gas seals produced by different manufacturers were not compatible with each other. This resulted in low efficiency in the coiled tubing fracturing operations carried out by the gas field company, thereby severely restricting the company’s ability to increase production volume. It is reported that in order to overcome this bottleneck, the gas field company, based on its own market demands and technical R&D capabilities, organized more than a dozen technicians to conduct numerous discussions and research sessions. As a result of these efforts, the \"special casing thread\" was optimized and improved on over ten occasions, until finally this product with independent intellectual property rights was developed. Liu Erhu, manager of the R&D department at Shaanxi Yanchang Gas Field Company, said: \"The gas field company has begun to apply for **patents for the self-developed ‘special casing thread’.\" Once the product is successfully introduced, it will not only provide technical support for standardized production in the industry, but also significantly improve the efficiency of oil field capacity utilization and reduce the risk of underground accidents, thereby helping to extend the scale of oil and gas production. ”