Million-Ton Directional Well Breakthrough

By November 28, Changqing Oilfield had drilled 1,720 large-inclination wells in Gansu’s Longdong region, achieving an average daily output of 3.2 tons and over 800,000 tons of annual production. This marks China’s first million-ton directional-well development zone, offering a replicable model for multi-layer tight oil. Since 2019, Changqing integrated seismic, geological, and logging data to pinpoint “sweet spots,” and established the “large-inclination well + five-spot pattern + advance water injection” model. Through refined reservoir characterization and multi-layer fracturing, vertical recovery efficiency exceeded 80%, unlocking efficient development of complex tight reservoirs.

AI-Driven Fracturing Boosts Shale Productivity

Jianghan Oilfield has built an AI-powered “design–execution–evaluation” closed-loop fracturing optimization system based on Sinopec’s Changheng AI model, greatly improving efficiency, quality, output, and cost control. The system enabled high-yield results such as the JY18-12HF well’s 143,000 m³/d output, marking breakthroughs in Fuling’s mature shale blocks. Through intelligent parameter optimization, real-time fracture diagnostics, and automated quality evaluation, the system shifts decisions from experience-based to model-driven. It enhances design accuracy by 50%, predicts sand plugging with 92% accuracy, reduces risk to 0.5%, and enables minute-level fracture fitting, supporting rapid, data-driven shale gas development.

Breakthrough Mixed-Flow Pump Achieves Record Run

A wide-range mixed-flow pump developed by CNPC’s Research Institute and Daqing Oilfield teams has achieved 660 days of uninterrupted operation in the Gulong shale oil demo area, marking a new record for shale oil artificial lift. Designed to overcome rapid decline, output fluctuation, and high gas content, the fully domestic system breaks foreign monopoly. Through innovations in hybrid axial–radial flow channels and integrated gas-handling technology, the pump operates stably across 20–200 m³/d withstanding up to 80% gas at intake. Field tests showed strong performance under extreme conditions, producing 4,115 tons and proving its reliability for large-scale shale oil development.