【摘要】 水平井可视化检测技术是评估井筒完整性、检测套管损坏及落鱼位置的重要手段。然而，现有输送方式如电缆爬行器、连续油管及穿缆连续作业存在效率低、设备要求高或长距离作业风险等问题。提出一种基于油管泵送工艺的低成本、新型输送方式，该工艺通过流体推力结合过水限位装置将井下工具串推送至目标层位进行检测。通过建立过水限位装置的排量计算模型并对工具串进行受力分析，分析了流体推力与排量的关系。现场应用表明，油管泵送工艺成功将井下工具串推送至目标位置，为后续检测提供了必要条件,有效解决了传统输送方式存在的问题，为水平井可视化检测提供了高效可靠的新途径。基于该工艺稳定的输送效果，最终获得了高清晰度井下视频数据，在套管破损检测、遇阻位置分析和落鱼识别等方面取得显著效果。更多还原

【Abstract】 Horizontal well visualization detection technology is an essential means for assessing wellbore integrity, detecting casing damage, and locating fish in the well. However, existing conveyance methods, such as cable crawlers, coiled tubing, and through-tubing operations, suffer from issues such as low efficiency, high equipment requirements, or risks associated with long-distance operations. This paper proposes a low-cost, novel conveyance method based on tubing-conveyed pumping technology. This method utilizes fluid thrust in combination with a water-limiting device to push the downhole tool string to the target formation for detection. By establishing a flow rate calculation model for the water-limiting device and conducting a force analysis on the tool string, the relationship between fluid thrust and flow rate is analyzed. Field applications have demonstrated that the tubing-conveyed pumping technology successfully delivers the downhole tool string to the target position, providing the necessary conditions for subsequent detection. It effectively addresses the problems associated with traditional conveyance methods and offers a new, efficient, and reliable way for horizontal well visualization detection. Based on the stable conveyance results of this technology, high-definition downhole video data are ultimately obtained, achieving significant results in casing damage detection, obstruction location analysis, and fish identification.更多还原