由新疆油田勘探开发研究院、采油工艺研究院（监理公司）、玛湖勘探开发项目部、采油二厂等单位联合攻关的强敏感致密油藏二氧化碳全域驱替技术取得重大突破。

A major breakthrough has been achieved in the technology of full-scale carbon dioxide displacement of strong sensitive tight oil reservoirs, jointly developed by the Xinjiang Oilfield Exploration and Development Research Institute, the Oil Production Technology Research Institute (construction company), the Mahe Exploration and Development Project Department, and the Second Oil Production Plant.

该技术突破了强敏感致密油藏开发瓶颈，标志着新疆油田在该领域绿色高效开发迈上了新台阶，为玛湖凹陷区难动用储量效益开发提供了核心支撑，同时助力CCUS全产业链发展，有力践行了“双碳”目标。

This technological breakthrough has overcome the development bottleneck of highly sensitive tight oil reservoirs, marking a new milestone in the green and efficient development of Xinjiang Oilfield in this field. It provides core support for the efficient development of difficult-to-access reserves in the Mahe Depression area, and at the same time helps to develop the entire CCUS industry chain, effectively fulfilling the "dual carbon" goal.

玛湖1上乌尔禾组油藏是新疆油田原油上产的重要接替领域，但储层强水敏特性导致黏土矿物遇水运移、封堵孔喉，常规注水开发效果差、效益低，成为世界级的开发难题。联合攻关团队立足问题导向，经多轮机理研究、室内实验与现场试验，创建强敏感致密油藏二氧化碳全域驱替技术体系，实现直井最高日产油超14．2吨，破解了难动用油藏开发困境。

The oil reservoir of the Upper Wulhe Formation in Mahe 1 is an important successor area for increasing crude oil production in Xinjiang Oilfield. However, the strong water sensitivity of the reservoir causes clay minerals to migrate and block pore throats when exposed to water, resulting in poor development effect and low economic efficiency through conventional water injection, which has become a world-class development challenge. The joint research team, based on the problem-oriented approach, conducted multiple rounds of mechanism studies, laboratory experiments and field tests, and created a carbon dioxide all-domain displacement technology system for strongly sensitive tight oil reservoirs. This enabled the highest daily oil production of over 14.2 tons in vertical wells, solving the development problem of difficult-to-access oil reservoirs.

采油工艺研究院（监理公司）团队围绕“精准动用、有效驱替”核心，在压裂引效与气驱前缘识别两大关键领域实现双突破，构建起自主知识产权技术体系。在压裂引效方面，创新气驱采油井差异化压裂设计方法，精准匹配缝长与气驱基质波及关系，优化参数配置，使引效成功率超85％，建立有效注采驱替关系。在气驱监测方面，完善前缘地下空间监测体系，精细刻画断层及裂缝分布，构建“储层—通道—前缘”全链条识别方法，实现气驱前缘精准刻画与风险预警，为注气方案调整、防窜封窜提供可靠保障，提升开发可控性与安全性。

The team of the Oil Production Technology Research Institute (the supervision company) focused on the core concepts of "precise utilization and effective displacement", achieving two breakthroughs in two key areas: fracture stimulation effectiveness and identification of the gas drive front. They established an independent intellectual property technology system. In the aspect of fracture stimulation effectiveness, they innovated the differentiated fracturing design method for gas-driven oil production wells, precisely matching the fracture length with the gas drive matrix sweep relationship, optimizing parameter configuration, and achieving a success rate of over 85% for stimulation effectiveness. They also established an effective injection-production displacement relationship. In the aspect of gas drive monitoring, they improved the underground space monitoring system for the front edge, precisely depicting the distribution of faults and fractures, and constructing a "reservoir - channel - front edge" full-chain identification method, enabling precise depiction of the gas drive front and risk warning, providing reliable guarantees for adjustment of injection plans and prevention of cross-flow and well sealing, and enhancing the controllability and safety of development.

该技术现场应用成效显著，支撑试验区年注碳量达10万吨，二氧化碳混相驱油特征明显，预计提高采收率达20个百分点以上。工业化推广后，可实现2．6亿吨同类型油藏储量效益动用，助力新疆油田构建CCUS全产业链技术体系。

The on-site application of this technology has yielded significant results, supporting an annual carbon injection volume of 100,000 tons in the pilot area. The characteristics of CO₂ miscible oil displacement are evident, with an expected increase in recovery rate by over 20 percentage points. After industrialization and promotion, it can unlock the economic potential of 260 million tons of similar reservoirs, aiding Xinjiang Oilfield in establishing a comprehensive CCUS industrial chain technology system.

攻关团队将持续深化技术迭代升级，拓展技术在玛湖凹陷及其他非常规油藏的应用，推动强敏感致密油藏规模效益开发，为新疆油田建设基业长青百年油田注入科技动力。

The research team will continue to deepen technological iteration and upgrades, expand the application of technology in the Ma'hu Sag and other unconventional reservoirs, promote the scale-effective development of highly sensitive tight oil reservoirs, and inject technological momentum into the construction of a long-lasting, century-old oilfield for Xinjiang Oilfield.