Core Insights - The Tarim Basin's largest gas storage facility, the Yaha Gas Storage, has completed its surface expansion project, increasing its daily gas injection capacity by 10 million cubic meters [1] - The Yaha Gas Storage is built on the Yaha condensate gas field, with an average burial depth exceeding 5,100 meters, making it the largest gas storage facility in China at depths over 5,000 meters [1] - The new gas collection station at Yaha can achieve a maximum daily gas output of 20 million cubic meters, playing a crucial role in seasonal peak regulation, emergency supply, and national energy strategy reserves for the West-to-East Gas Transmission project [1] Gas Injection and Technology - The gas storage facility operates for 7 months of gas injection and 4 months of gas extraction annually, utilizing domestically developed 40 MPa high-pressure large-capacity centrifugal gas injection compressors, achieving 100% localization of equipment [3] - The mechanical performance and testing indicators of the compressors have reached international advanced levels, filling a domestic gap in technology [3] Annual Injection Achievement - Concurrently with surface construction, the Tarim Oilfield has proactively initiated annual gas injection for four gas storage facilities around the Tarim Basin, achieving a record gas injection volume of 1.2 billion cubic meters [5]

Core Viewpoint - The successful development and deployment of China's first fully domestically produced 40 MPa high-pressure large-capacity centrifugal gas injection compressor marks a significant achievement in the gas storage industry, breaking foreign technology monopolies and reducing costs by over 50% compared to imported equipment [1][2]. Group 1: Technological Advancements - The compressor features a compact drive scheme using "variable frequency motor + gearbox + coaxial high and low pressure cylinders," which significantly reduces footprint and investment costs [2]. - Innovations include the use of narrow three-dimensional spark erosion processing technology for the impeller, suitable for high pressure, high efficiency, and low flow conditions [2]. - The development of rotor structure optimization and dynamic analysis methods allows for precise calculations of rotor thrust under high-pressure conditions, addressing sealing deformation and gas excitation issues through a "honeycomb structure + counter-rotating flow seal" combination [2]. Group 2: Performance and Capacity - The newly developed high-pressure centrifugal compressor has a daily processing capacity of 5.5 million cubic meters, with an injection pressure of 40 MPa and a motor power of 23 MW, significantly enhancing the gas storage efficiency [1]. - The compressor is currently in the installation and debugging phase, with plans for official operation in October [2].

Core Viewpoint - The successful deployment of China's first fully domestically produced 40 MPa high-pressure large-capacity centrifugal gas injection compressor at the Yaha gas storage facility in the Tarim Oilfield marks a significant milestone in achieving complete equipment localization in the gas storage sector, breaking foreign technology monopolies and enhancing national energy security [1][2]. Group 1: Technological Advancements - The research team developed several key innovative technologies for the domestication of high-pressure centrifugal compressors, including a compact drive scheme using "variable frequency motor + gearbox + coaxial high and low pressure cylinders," which significantly reduces footprint and investment costs [2]. - The innovative impeller manufacturing utilized narrow three-dimensional spark erosion processing technology, successfully creating impellers suitable for high pressure, high efficiency, and low flow conditions [2]. - The team optimized the high-pressure cylinder rotor structure, accurately calculating rotor thrust under high-pressure conditions and addressing sealing challenges with a "honeycomb structure + counter-rotating flow seal" combination technology [2]. Group 2: Economic Impact - The 40 MPa high-pressure centrifugal compressor has entered the installation and debugging phase, resolving key supporting issues for the Yaha gas storage facility, and reducing costs by over 50% compared to imported equipment [2]. - The technology developed has broad application potential in industries such as petroleum, petrochemicals, and metallurgy, indicating significant promotional value [2].

Core Insights - The first domestically produced 40 MPa high-pressure large-capacity centrifugal gas injection compressor has been successfully implemented at the Yaha gas storage facility in the Tarim Oilfield, marking a significant milestone in China's gas storage technology [1][2] - This development signifies the complete localization of gas storage equipment, breaking foreign technology monopolies and providing new technical support for national energy security [1][2] Group 1: Equipment and Technology - The 40 MPa compressor is designed to handle a daily natural gas volume of 5.5 million cubic meters, with an injection pressure of 40 MPa and a motor power of 23 megawatts, significantly enhancing the gas storage efficiency [2][5] - The compressor's development involved collaboration with Shenyang Blower Group Co., Ltd., focusing on key technologies such as high-pressure cylinder design and efficient flow models, resulting in a product with completely independent intellectual property rights [5] - Innovative technologies include a compact drive scheme using "variable frequency motor + gearbox + high-low pressure cylinder coaxial" to reduce footprint and investment costs, as well as advanced manufacturing techniques for the impeller [5] Group 2: Project Overview - The Yaha gas storage facility is located in the Kucha area of Aksu, Xinjiang, and is China's first deep-layer condensate gas storage facility, part of a key construction project by China National Petroleum Corporation [2] - The construction of the gas storage facility follows a phased approach, with an initial working gas volume of 2.4 billion cubic meters, aimed at seasonal peak shaving and emergency gas supply for five regions in southern Xinjiang [2] - Upon completion of the second phase, the facility will achieve a strategic working gas volume of 5 billion cubic meters, enhancing the peak shaving and emergency gas supply capabilities of the West-to-East Gas Transmission pipeline [2]