石油工业技术监督

随着渤海油田向深层和超深层钻井发展，井控安全面临更高挑战。传统溢流和井漏监测方法存在滞后性，难以满足微溢流早期预警需求。为此，渤海X井首次应用了非满管早期溢漏监测预警系统，该系统由非满管出口流量实时监测装置、电子液面坐岗仪、司钻预警终端及钻井溢漏风险智能预警平台组成，实现了出口管非满管状态下钻井液流量的实时精确测量和循环罐液面智能分析。通过边缘计算与AI技术，系统能智能识别多种工况并分级预警，预警准确率≥90%，可提前3～7 min发现溢漏风险。现场应用表明，该系统显著提升了溢漏早期发现能力，降低了井控风险，为海上钻井安全提供了创新解决方案。

With the development of the Bohai Oilfield towards deep and ultra-deep drilling, well control safety is facing higher challenges. The traditional overflow and wellbore leakage monitoring methods have a lagging nature, which makes it difficult to meet the early warning requirements for micro-overflow. Therefore, the non-full pipe early leakage monitoring and warning system was applied for the first time in well X of Bohai Sea. This system consisted of a real-time monitoring device for non-full pipe outlet flow, an electronic liquid level watchstander, a driller's warning terminal, and an intelligent warning platform for drilling overflow and leakage risks. It has achieved real-time and accurate measurement of the drilling fluid flow in non-full pipe conditions of the outlet pipe and intelligent analysis of the liquid level in the circulation tank. Through edge computing and AI technology, the system can intelligently identify multiple working conditions and issue graded warnings, with an early warning accuracy rate of no less than 90%, and can detect overflow risks 3 to 7 minutes in advance. Field applications show that this system has significantly enhanced the ability to detect leaks early and reduces well control risks, providing an innovative solution for the safety of offshore drilling.