lost circulation
丢失循环：钻井过程中钻井液无法返回到地面的现象
常用释义
英式发音
美式发音
基本释义
- 丢失循环：钻井过程中钻井液无法返回到地面的现象，可能是由于地层裂缝、洞穴或破碎地层等原因导致的。
例句
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1·Newspapers might have lost circulation, but they haven\'tlost their readership.报刊的发行量可能下降了，但它们的读者并没有流失。
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2·Lost circulation is often happened during drilling in multi -fracture formation.井漏是多裂缝地层钻井作业中经常发生的复杂情况之一。
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3·When 0.3% - 0.5 % thixotropic regulator was added, the lost circulation material had good thixotropy.触变调节剂使堵漏剂具有良好的触变性，其用量占主剂的0.3% - 0.5%较佳。
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4·Therefore lost circulation has always been an urgent technical problem in the process of well drilling.所以，井漏一直是钻井工作中亟需解决的技术难题。
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5·Drilling risks include the risk of lost circulation, well fall risk, the risk of Wells flow, and sticking risk.钻井风险主要包括井漏风险、井塌风险、井涌风险、卡钻风险。
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6·According to the situation of drilling lost circulation in Zhongyuan Oilfield, a side hydraulic tool has been designed.针对中原油田井漏的情况，设计了随钻防漏的侧向水力工具。
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7·In the well drilling production, lost circulation has been the difficult problem which is common and difficult to avoid.石油钻井施工中，井漏一直是常见而又难避免的问题。
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8·In Yanchang oilfield, serious lost circulation often occur during drilling in Panlong and Zichang areas, directly affect drilling rate.延长油矿管理局在蟠龙、子长等主生产区经常遇到严重漏失井，直接影响了钻井速度。
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9·In the process of drilling, lost circulation can often result in serious drilling accidents, delay the period of drilling and increase the cost of drilling.钻进过程中，井下泥浆的漏失往往导致严重的钻井事故，从而延长钻井周期，增加钻井成本。
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10·Drilling a well in the broken carbonate strata where the pressure gradient is widely different, lost circulation is an important factor that makes the rig time losed.在压力梯度悬殊的碳酸盐岩破碎地层中钻井，井漏是损失钻机月的重要因素。