LLT-2型井下液面监测系统的实践应用

• 作 者: 张建贵 吴健 曾祥春 王春生 柳汉明 邹永清 赵兴伟 陈国庆 刘俊
• 机 构: 川庆钻探工程公司川西钻探公司,
• 出 处: 钻采工艺
• 发表日期: 2010年03期
• 关键词: 旧井压井 液面监测 原理 实践应用

四川盆地旧井地层压力已普遍降低,大部分地层压力系数已低于1.0,压井液易漏失,在修井过程中必须采用低密度压井液进行压井,井内液柱平稳后方能进行下步作业,但由于压井液漏失导致不能及时准确掌握井下液面情况,从而造成井控安全隐患,同时增加施工作业成本及技术风险,文章就LLT-2型井下液面监测系统的工作原理及现场应用实践进行总结分析,证明LLT-2型井下液面监测系统能准确监测井下液面情况,确保作业过程中的井下作业井控安全,对下步生产技术措施的制定及安全生产具有指导意义。

The pressure of the old wells in the Sichuan Basin has been generally reduced, most of the formation pressure coefficient has been below 1.0, the killing fluid is easy to leak, and the low density killing fluid must be used to kill the well in the well drilling process. However, due to the loss of well killing fluid, the downhole fluid level can not be grasped in time and accurately, leading to the safety hazard of well control and increasing the construction operation cost and technical risk. The article discusses the working principle of LLT-2 downhole surface monitoring system and Field application of practice summary analysis shows that LLT-2 downhole liquid level monitoring system can accurately monitor the downhole surface conditions to ensure that the operation of underground well control during operation, the next step in the production of technical measures and safety guidance .