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。
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。
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。
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。
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。
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。
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。
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。
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。
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。