Zhong Guo Jing Ji Wang·2025-10-24 14:00Core Viewpoint - The "Large Diameter All-Electric Fine Pressure Control Drilling System" developed by China Petroleum Chuanqing Drilling Engineering Company has been recognized as a major technological equipment in the energy sector, filling a gap in pressure control technology for large diameter boreholes of 311.2mm and above, enhancing China's capability for deep well drilling operations [1][3]. Group 1: Challenges in Deep Well Drilling - The development of deep and ultra-deep oil and gas resources faces significant challenges due to complex well structures, high fluid flow rates, and narrow safety windows, making it difficult to reach geological targets [2]. - China's deep and ultra-deep oil and gas resources account for 70.3% of its total resources, necessitating advancements in drilling technology to meet the increasing demands for deep well drilling [2]. Group 2: Innovations in the New System - The new drilling system features three major innovations: a self-compensating sealing structure for high-speed rotary components, a high-efficiency throttling control technology for large flow rates, and an advanced algorithm for real-time pressure monitoring and adjustment [6][7]. - The system can handle borehole sizes up to 593.7mm and pressure capabilities of 35 MPa, with a flow rate of 120 liters per second, significantly improving efficiency by 263% [6][7]. Group 3: Market Positioning and Future Applications - The system is designed for complex geological conditions and is expected to meet the increasing demand for deep and ultra-deep well drilling, with an anticipated annual demand of over 100 wells [7]. - The system's production achieves 100% localization, breaking foreign technology monopolies and enhancing the domestic industry's technological capabilities [7][8]. - The project has established a comprehensive industrial chain covering R&D, manufacturing, maintenance, and service, with plans for further expansion into international markets [8].