中国石油网消息：4月10日，记者从长庆油田油气工艺研究院获悉，由该院自主研发的中国石油首个缓膨微球2.0改善水驱技术（简称微球2.0技术），在姬塬长8“压舱石”示范工程主力油藏应用后，产量月度递减率下降0.9个百分点、月含水上升幅度下降0.7个百分点，降递减、控含水效果突出。

China Oil News: On April 10th, a reporter from the Oil and Gas Technology Research Institute of Changqing Oilfield learned that the first China Petroleum slow-swelling microsphere 2.0 enhanced water drive technology (referred to as the microsphere 2.0 technology), independently developed by the institute, has been applied in the main reservoir of the Jiyuan Chang8 "balancing stone" demonstration project. After the application, the monthly decline rate of production decreased by 0.9 percentage points, and the monthly increase rate of water content decreased by 0.7 percentage points. The effect of reducing decline and controlling water content is remarkable.

微球2.0技术是油气工艺研究院紧贴油田开发生产实际，在纳米微球改善水驱技术基础上，聚焦长期制约开发的瓶颈难题，精准攻关、靶向施策取得的突破性创新成果。该技术相当于为地下油藏装上智能分流阀，水往哪流、什么时候堵，全部可控。与国外同类产品相比，微球2.0技术各项性能指标实现全面领先，真正构建起“走得深、堵得准、效长久”的高效调驱体系。

The Microsphere 2.0 technology is a breakthrough innovation achieved by the Oil and Gas Technology Research Institute by closely aligning with the actual production and development of oilfields. Based on the improvement of water drive technology through nano microspheres, it focuses on the long-standing bottlenecks that hinder development and precisely tackles the problems, implementing targeted measures. This technology is equivalent to equipping underground oil reservoirs with intelligent分流 valves， allowing full control over where the water flows and when it gets blocked. Compared with similar products from abroad， the performance indicators of the Microsphere 2.0 technology have achieved comprehensive leadership， truly establishing an efficient stimulation system that is "deeply penetrable， accurately blocked， and long-lasting in effect".

长庆油田所在的鄂尔多斯盆地油藏储层致密坚硬，地层孔隙直径不足头发丝的1/30。面对“井井有油、井井不流”的世界级开发难题，水力压裂技术成为推动低渗透油藏效益开发的重要支撑。但受盆地内微裂缝广泛发育、储层非均质性强的地质条件制约，注入水沿优势通道窜流、低效循环问题突出，水驱不均矛盾凸显，极大制约了水驱开发效益与油田可持续稳产。

The oil reservoirs in the Ordos Basin where the Changqing Oilfield is located are extremely dense and hard, with the pore diameters of the strata being less than 1/30 of the diameter of a human hair. Facing the world-class development challenge of "oil in every well but no flow in every well", the hydraulic fracturing technology has become an important support for the efficient development of low-permeability oil reservoirs. However, constrained by the geological conditions within the basin, such as the extensive development of micro-fractures and the strong heterogeneity of the reservoirs, the problem of injected water flowing along dominant channels and inefficient circulation is prominent, and the contradiction of uneven water drive is highlighted, which greatly restricts the water drive development efficiency and the sustainable stable production of the oilfield.

瞄准这一难题，该院提出“延迟膨胀、纵深调驱”的核心技术思路——通过控制粒径约50纳米的微球在注入初期保持稳定小粒径形态，使其随注入流体运移至地层深部后再缓慢膨胀，精准封堵高渗优势通道，有效扩大水驱波及体积，持续提升水驱开发效果。

To address this challenge, the institute proposed the core technical concept of "delayed expansion and deep-layer stimulation" - by controlling the microspheres with a particle size of approximately 50 nanometers to maintain a stable small particle size at the initial stage of injection, allowing them to migrate with the injected fluid to the deep part of the formation and then slowly expand, precisely sealing the high-permeability advantageous channels, effectively expanding the water flooding coverage volume, and continuously improving the water flooding development effect.

以此为技术蓝本，科研团队创新形成复合交联新方法，创建“微通道反应器+紫外光聚合”新工艺，成功制备出性能更优、适配性更强的微球2.0体系。相较于传统技术，微球2.0技术将膨胀启动时间由3天延长至1—2周，大幅拓展了微球在地层孔隙中的运移深度。

Based on this technical blueprint, the research team innovatively developed a new method of composite cross-linking, created a new process of "microchannel reactor + ultraviolet polymerization", and successfully prepared a microsphere 2.0 system with better performance and stronger adaptability. Compared with traditional technology, the microsphere 2.0 technology has extended the expansion initiation time from 3 days to 1-2 weeks, significantly expanding the migration depth of microspheres in the formation pores.

如今，微球2.0技术作为保障油田稳产上产的关键技术，已规模化推广应用359井次，实施后，主力油藏的控递减幅度达2至4个百分点，油田自然递减率、含水上升率实现刚性下降。“预计缓膨微球2.0改善水驱技术年实施规模可稳定在3000口井以上，未来有望全面替代纳米微球改善水驱技术，成为低渗透油田改善水驱的新一代主力技术。”油气工艺研究院堵水调驱技术研究所书记吕宝强表示。

Nowadays, the Microsphere 2.0 technology, as a key technology for ensuring stable and increased production in oil fields, has been applied on a large scale in 359 wells. After implementation, the decline rate of the main oil reservoirs has decreased by 2 to 4 percentage points, and the natural decline rate of the oilfield and the water content increase rate have achieved a rigid decrease. "It is expected that the implementation scale of the Slow Swelling Microsphere 2.0 to improve water drive technology can remain stable at over 3,000 wells annually. In the future, it is expected to fully replace the Nano Microsphere to improve water drive technology and become the new main technology for improving water drive in low-permeability oilfields," said Lu Baqiang, the secretary of the Water Blocking and Stimulation Technology Research Institute of the Oil and Gas Process Technology Research Institute.