摘要
目前,钻井现场主要采用超声波液位计和浮球式液位仪对循环罐钻井液液位进行监测,虽然超声波液位计实现了实时、连续测量,但当液面波动较大时其监测效果受到一定影响,容易产生误报。浮球式液位仪的监测更加稳定、可信度高,是井队判断循环罐液位的主要手段;但现有装置不能多点、实时记录循环罐钻井液液位的变化,需要坐岗人员定时观察记录,人员劳动强度大,溢漏判断准确度低、及时性差。此外,现有技术无法自动准确识别泥浆工加料、启停泵操作等,使用过程中误报率较高。针对上述问题,研发了一种基于循环罐浮球液位仪的数字显示与溢漏预警系统。现场应用表明该系统能够在开泵、停泵、变排量等环节均实时、连续、稳定监测循环罐液面波动,精度达到±1 mm,并成功预警1次井漏事件。系统实现了循环罐钻井液液位监测的数字显示,对于提高溢漏识别的准确度、减少误报和漏报,进一步保证钻井安全具有重要意义。
At present, ultrasonic level gauge and float ball level meter are mainly used in drilling sites to monitor the mud tanks fluid level.Although the ultrasonic level gauge has achieved real-time and continuous measurement, its monitoring effect is affected to a certain extent when the liquid level fluctuates greatly, and it is easy to produce false alarms.The monitoring of float ball level meter is more stable and reliable, so it has become the main method for the drilling crews to judge the mud tank fluid level.However, the existing float ball level meters cannot record the change of the mud tank fluid level at multiple points in real time, and require personnel on duty to observe and record the mud tank fluid levels regularly.The labor intensity of the personnel is high, the judgment accuracy of overflow and leakage is low, and the timeliness is poor.In addition, the existing technology cannot automatically and accurately identify the mud man feeding, turn on or stopping the pump and so on, the false alarm rate is relatively high.For the above problems, a digital display and overflow and leakage early warning system for mud tanks based on float ball level meter is designed.The field application shows that the system can monitor the fluctuation of the mud tanks liquid level in real-time, continuously and stably during the process of pumping, pipe connection and flow rate changing.The monitoring accuracy of the system is ±1 mm, and a leakage event was successfully warned by the system.The system realizes the digitization of the mud tank fluid level monitoring, which is of great significance for improving the recognition accuracy of overflow and leakage, reducing false alarms and underreporting.It is of great significance to further ensure the safety of drilling.
作者
何弦桀
晏琰
杨晓明
HE Xianjie;YAN Yan;YANG Xiaoming(Drilling&Production Engineering Technology Research Institute,CNPC Chuanqing Engineering Co.,LTD.,Guanghan,Sichuan 618300,China;Shale Gas Exploration and Development Project Management Department,CNPC Chuanqing Engineering Co.,LTD.,Chengdu,Sichuan 610051,China;Chuandong Drilling Company,CNPC Chuanqing Engineering Co.,LTD.,Yubei,Chongqing 401120,China)
出处
《钻采工艺》
CAS
北大核心
2022年第6期107-112,共6页
Drilling & Production Technology
基金
中国石油天然气集团有限公司重大科技专项“陆上井控应急关键装备与配套技术研究”课题一“井控险情预警技术装备研发”(编号:2021ZZ03-1)。
关键词
循环罐液位
浮球
数字显示
实时监测
连续监测
溢漏预警
mud tank fluid level
float ball
digital display
real-time monitoring
continuous monitoring
overflow and leakage early warning
