首页|基于电磁式声波发射的环空液面连续监测技术研究与应用

基于电磁式声波发射的环空液面连续监测技术研究与应用

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钻遇井漏失返后,井筒内液柱压力长时间低于地层压力后易引发漏转喷,而当前钻井现场主要采用气枪式测距仪对环空钻井液液面高度进行监测,受该测距仪氮气瓶储量的限制,无法连续监测井筒环空液面高度,不便于现场作者人员及时发现漏转喷的井控风险.针对该测距仪的缺陷,文章将电磁式声波发射器引入到井漏后环空液面高度的监测技术中,从环空声波衰减特性研究入手,优化发声器结构设计,提升其低频响应特性,研发了一套基于电磁式声波发射器的环空液面高度自动识别监测系统,该系统具有自动连续监测、测量误差小(测量误差小于 2%)、体积小、易操作等优点,便于现场作业人员及时掌握环空液面高度,分析漏层的漏失情况,预判是否存在漏转喷的井控风险,为快速处理井漏复杂、降低井控风险提供技术支撑.
Research and Application of Continuous Monitoring Technology of Annulus Liquid Level Based on Electromagnetic Acoustic Emission
After drilling encounters total lost circulation,the fluid column pressure in the wellbore is lower than the formation pressure for a long time,which easy to cause lost circulation turn to blowout.Currently,the air gun rangefinder is mainly used to monitor the liquid level height of the drilling fluid in the annulus,however,due to the limitation of nitrogen gas cylinder storage,continuous monitoring of annulus liquid level height is not possi-ble,so that it is difficult for on-site operators to timely discover the well control risk.Starting from the study of the attenuation characteristics of the annulus acoustic wave,the structure design of the transmitter is optimized to improve its low-frequency response characteristics.A set of automatic recognition and monitoring system for the annulus liquid level height based on the electromagnetic acoustic transmitter is developed.The system has the characteristics of automatic continuous monitoring,small measurement error(measurement error less than 2%),small volume,and easy operation,which facilitates on-site operators to timely monitor the annular liquid level height,analyze the lost circulation of lost-circulation zone,predict whether there is a risk of lost circulation to o-verflow in well control,and provide technical support for for quickly handling the complexity of well leakage and reducing well control risks.

total lost circulationelectromagnetic typeannular acousticssound wave emissionannular liq-uid levelcontinuous monitoring

邓虎、段慕白、叶林祥、王敏、冯胤翔、徐勇军

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中国石油川庆钻探工程有限公司钻采工程技术研究院

中国石油川庆钻探工程有限公司

中国石油塔里木油田分公司克拉采油气管理区油气藏地质研究所

井漏失返 电磁式 环空声学 声波发射 环空液面 连续监测

中国石油天然气集团有限公司科技项目中国石油天然气集团有限公司科学研究与技术开发项目

2023ZZ202021ZZ03-1

2024

钻采工艺
四川石油管理局钻采工艺技术研究院,西南油气田分公司采气工程研究院

钻采工艺

北大核心
影响因子:0.634
ISSN:1006-768X
年,卷(期):2024.47(4)