Core Viewpoint - The China Petroleum Group Engineering Technology Research Institute has successfully developed a cement slurry technology capable of withstanding ultra-high temperatures of 240°C, providing critical technical support for deep geological exploration in China [1][2]. Group 1: Technology Development - The new cement slurry technology was tested in the first 10,000-meter scientific exploration well, the Shendi Takao 1 well, demonstrating its effectiveness under extreme conditions [1]. - Traditional cement materials fail rapidly in environments exceeding 200°C, leading to instability and reduced strength of the cement stone, which directly impacts the lifespan and safety of ultra-deep oil and gas wells [1]. Group 2: Core Materials and Innovations - The research team innovated four core materials: a retarder for precise control of cement curing time at depths of 10,000 meters, a water-loss reducer to form an efficient water-locking barrier, a suspension stabilizer to create a three-dimensional network within the slurry to prevent sedimentation, and a strength-retention inhibitor to enhance long-term strength at 240°C [1]. - These materials work synergistically to improve the overall temperature resistance of the cement slurry from 200°C to 240°C [1]. Group 3: Application and Achievements - The technology has been applied in nearly 100 ultra-deep wells deeper than 6,000 meters across seven major basins, setting new records for cementing operations [2]. - It supported the cementing of the Pengshen 6 well at a depth of 9,026 meters, creating the record for the deepest vertical well in Asia, and achieved a global record of 10,910 meters in the Shendi Takao 1 well under extreme conditions [2]. - The technology has received multiple accolades, including being recognized as one of the "Top Ten Technological Advances" by China Petroleum and winning three provincial and ministerial-level patent gold awards [2].