中国石油网消息：截至5月6日，中国石油首个普通稠油化学驱提高采收率项目——辽河油田海1块稠油水驱转化学复合驱先导试验项目，已完成16个井组转驱，实现日增油11.3吨，井组最高日产油较试注前翻番，生产指标优于方案设计。

China Oil News: As of May 6th, China Petroleum's first general heavy oil chemical stimulation project for increasing recovery rate - the先导 trial project of chemical composite stimulation for water flooding in Ha1 block of Liaohe Oilfield， has completed the conversion of 16 well groups and achieved a daily increase in oil production of 11.3 tons. The maximum daily oil production of the well groups has doubled compared to before the trial injection， and the production indicators are better than the design.

海1块是2022年4月集团公司启动的首批老油田“压舱石”工程之一。实施化学驱前，该区块水驱阶段开发成效良好，采出程度已达43.9%，接近现有技术与经济条件下的开发极限。

Block Hai 1 was one of the first "balancing stone" projects initiated by the group company in April 2022. Before the implementation of chemical stimulation, the development performance of this block during the water drive stage was excellent, with the recovery rate reaching 43.9%, approaching the development limit under the current technical and economic conditions.

随着开发进入后期，剩余油高度分散，常规注水难以有效动用。2025年3月，辽河油田依托“压舱石”工程，启动先导试验，填补了中国石油普通稠油化学驱提高采收率的技术空白，为老油田稳产提供支撑。

As the development progresses to the later stage, the remaining oil becomes highly dispersed, and conventional water injection is unable to effectively utilize it. In March 2025, Liahe Oilfield, relying on the "Balancing Stone" project, initiated a pilot test, filling the technological gap in chemical stimulation for increasing recovery rate of ordinary heavy oil in China National Petroleum Corporation, and providing support for the stable production of old oilfields.

“化学驱与常规注水开发不同，药剂注入地下后，地下运移与驱油过程具有不可逆性、不可复制性，需要全过程跟踪动态变化、及时调控，最大限度提升采收率。”辽河油田金海采油厂地质研究所二级工程师李晓佳说。

"Chemical stimulation differs from conventional water injection development. Once the chemical agent is injected into the underground, the underground migration and the oil displacement process become irreversible and non-reproducible. It requires continuous tracking of dynamic changes throughout the process and timely regulation to maximize the recovery rate," said Li Xiaojia, a second-level engineer at the Geological Research Institute of Jinhai Oil Production Plant of Liaohe Oilfield.

实施中，金海采油厂优化药剂配制工艺，改为清水配制降低黏度损耗，并通过完善井网、注采协调等举措提升采收率。辽河油田组建专项工作专班进驻一线，明确分工，建立动态跟踪和会商机制，保障试验平稳推进。

During the implementation process, Jinhai Oil Production Plant optimized the formulation process of the chemicals, changed to using clean water for formulation to reduce viscosity loss, and improved the recovery rate through measures such as improving the well pattern and coordinating injection and production. Liaohe Oilfield established a special working team to go to the front line, clearly defined the responsibilities, established a dynamic tracking and consultation mechanism, and ensured the smooth progress of the experiment.

据悉，该项目预计6月底前完成全部转驱，后续将持续优化注采调控，打造先导示范区。

It is reported that the project is expected to complete all the conversion and activation by the end of June. Subsequently, it will continue to optimize the injection and production control measures to create a pilot demonstration area.