中国石油网消息：9月13日获悉，渤海钻探在苏里格南区块SN0169i-05井圆满完成首批73毫米小口径油管固井施工作业，标志着该公司在小井眼、小口径油管精细化固井领域取得关键性技术突破，填补了国内相关技术空白。

China Oil News: On September 13th, it was learned that Bohai Drilling successfully completed the first batch of 73-millimeter small-diameter tubing cementing operations in the SN0169i-05 well in the Suirig South block. This marks a key technological breakthrough for the company in the field of small-borehole and small-diameter tubing precision cementing, and fills the domestic technical gap in this area.

苏里格南区块地质条件复杂，地层低压易漏，采用73毫米管径的小油管，对地层扰动小，有利于地层稳定，且能够有效降低开发成本。针对套管居中度难以保证，小口径管柱摩阻大、循环压耗高，易发生地层漏失与油气窜通的难题，渤海钻探组建技术攻坚专班，结合区块地质特征开展多轮方案论证与数字化模拟推演，坚持“一井一策”精细化管理，量身定制施工方案。同时，优化高强低密度防漏水泥浆体系，精准优化流变参数与稠化时间，确保适配低压窄间隙工况，从技术源头规避施工风险。

The geological conditions of the Surignan block are complex, with low pressure in the strata prone to leakage. Using small tubing with a diameter of 73 millimeters minimizes disturbance to the strata, which is conducive to maintaining stability and can effectively reduce development costs. Due to the difficulty in ensuring the central position of the casing, the small-diameter pipe string has high frictional resistance and high circulation pressure loss, which can easily lead to formation leakage and oil and gas migration. To address these problems, Bohai Drilling has established a technical breakthrough team. Based on the geological characteristics of the block, they have conducted multiple rounds of scheme demonstrations and digital simulation analyses, adhering to "one well, one strategy" for precise management, and customizing construction plans. At the same time, they have optimized the high-strength, low-density anti-leakage cement slurry system, precisely optimized the rheological parameters and thickening time to ensure compatibility with low-pressure and narrow-gap working conditions, thereby avoiding construction risks from the technical source.

作业团队严格执行标准化流程，实时动态监控排量、泵压、替浆量等核心参数，从试压检测、混浆注灰到替浆候凝，全流程高效有序，各项数据全部达标，实现施工全程零事故。

The operation team strictly follows the standardized procedures, continuously monitoring core parameters such as displacement, pump pressure, and replacement fluid volume in real time. From pressure testing and slurry mixing and grouting to waiting for the replacement fluid to set, the entire process is carried out efficiently and orderly. All data meet the standards, achieving zero accidents throughout the construction process.