中国石油网消息：8月14日，从大港油田获悉，大港油田工程技术团队自主研发的多维自适应随钻防漏技术累计应用11井次，防漏有效率达100%，节约钻井成本近800万元。

China Oil News: On August 14th, it was learned from Dagang Oilfield that the multi-dimensional adaptive real-time leak prevention technology independently developed by the engineering team of Dagang Oilfield has been applied in 11 wells, with an effective rate of leak prevention reaching 100%. This has saved nearly 8 million yuan in drilling costs.

据悉，该技术配套核心评价方法已获国家发明专利，并初步形成水基、油基双体系防漏技术序列，为复杂地层钻井作业安全提质、降本增效提供了技术支撑。

It is reported that the core eva luation method of this technology has obtained a national invention patent, and a dual-system leakage prevention technology sequence for water-based and oil-based fluids has been initially formed. This provides technical support for improving the safety, reducing costs and increasing efficiency in complex formation drilling operations.

钻井液漏失是制约复杂地层安全高效钻井的长期难题。传统防漏材料适应性有限，难以匹配不同深度、温度和压力条件下的井下工况。大港油田科研团队聚焦这一技术瓶颈，创新研发多维自适应随钻防漏技术，优选压力形变贴合材料与温敏材料，利用其温控固化协同作用，使封堵层能够自主适配地层孔隙和微裂缝，实现由“事后堵”向“随钻防”的转变。

Drilling fluid leakage is a long-standing problem that hinders safe and efficient drilling in complex formations. Traditional anti-leakage materials have limited adaptability and are difficult to match the downhole conditions under different depths, temperatures, and pressures. The research team of Dagang Oilfield focused on this technical bottleneck and innovatively developed a multi-dimensional adaptive real-time anti-leakage technology. They selected pressure deformation fitting materials and temperature-sensitive materials, and utilized their temperature-controlled curing synergy to enable the sealing layer to autonomously adapt to the pores and micro-cracks of the formation, achieving a transformation from "post-event sealing" to "real-time anti-leakage".

室内评价数据显示，该技术封闭滤失量较现场常规技术降低26.6%以上，应用井钻井液砂床封闭滤失量降低54%以上，累计缩短钻井周期59.2天。为促进技术落地应用，大港油田同步制定标准化施工作业模板，通过动态优化钻速与钻井液排量匹配参数，建立全过程漏失风险动态管控模式，推动钻井作业向安全、高效、标准化施工转变。

The indoor eva luation data shows that the closed filtration loss volume of this technology is reduced by more than 26.6% compared to the conventional on-site technology. The application of the sand bed for sealing filtration loss in the well drilling fluid reduces the loss volume by more than 54%, and the cumulative drilling cycle is shortened by 59.2 days. To promote the implementation and application of this technology, Dahang Oilfield has simultaneously formulated standardized construction operation templates. By dynamically optimizing the matching parameters of drilling speed and drilling fluid flow rate, a dynamic control mode for leakage risks throughout the process has been established, promoting the transformation of drilling operations towards safety, efficiency, and standardized construction.

在水基防漏技术规模化应用的基础上，针对深层高温、高盐、强水敏地层勘探开发需求，大港油田油基钻井液复合封堵技术已顺利完成先导试验。该技术通过优化药剂配方、颗粒粒度与界面润湿性，融合多重封堵机理研发新型复合封堵剂，补齐油基钻井体系防漏技术短板，为后续规模化推广奠定基础。

Based on the large-scale application of water-based leak prevention technology, in response to the exploration and development needs of deep, high-temperature, high-salt and highly water-sensitive formations, the oil-based drilling fluid composite sealing technology of Dagang Oilfield has successfully completed the pilot test. This technology optimizes the formulation of reagents, the particle size and the interfacial wettability, integrates multiple sealing mechanisms to develop a new type of composite sealing agent, fills the gap in the leak prevention technology of the oil-based drilling system, and lays the foundation for subsequent large-scale promotion.