【判断题】
如果一人用加力杆也能保证旋塞阀回转,则说明旋塞阀良好。
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粘附卡钻的特点是钻具不能上提下放和转动,但循环正常。
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某定向井起钻遇卡,开泵正常,可转动钻具,但上提解卡,有人认为是缩径卡钻。
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如发生井塌及岩屑沉淀卡钻时,应设法循环泥浆,并转动钻具,把落物挤碎冲洗出来,并用轻提慢转倒滑眼的方法处理,切不可硬拔,以免越提越死。
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处理卡钻坚持“畅通”原则的三条路是上下活动.转动和循环。
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在打捞作业中,打捞筒的密封装置顶在上接头下端面上,迫使卡瓦外涨。
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硬关井是当发现溢流关井时,先打开阻流阀再关防喷器,最后关闭阻流阀的操作程序。
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反循环打捞篮的篮爪在外力作用下只能单向向下旋转90°。
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反循环打捞篮是用与打捞诸如钢球.钳牙.井口螺母.胶皮碎片等井下小件落物的。
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井漏的类型可以分为渗透性漏失;裂缝性漏失;溶洞漏失;人为因素造成的漏失。
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渗透性井漏一般发生在中生界石灰岩地层。
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溶洞漏失一般发生在渗透性较好的砂层和砾石层。
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植物动物以及一系列合成纤维可以在钻井液中纵横交错,形成网络,起悬浮作用,所以叫做填塞剂。
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用速凝水泥堵漏时要现在室内做好试验,保证有足够的施工时间。
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采用水泥浆堵漏时,在漏失井段没必要预留一段水泥塞。
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防喷考克在进行压力试验时应该稳压三分钟不得渗漏。
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投入式回压阀在使用上优于其他回压阀,但其结构复杂,操作也较为复杂。
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根据现场经验在一般的钻进中要安装回压阀。
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阻流管汇与防喷器之间的防喷管线是安装有两个放喷阀,其中液动阀安装在更靠近防喷器的位置上。
【判断题】
起下钻中如果计量罐液量出现异常说明井涌了。
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硬关井是指在关闭防喷器时节流管汇处于打开状态。
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硬关井可使喷出的流体逐渐被关住而不对地层产生猛烈的“液击”。
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硬关井会因为井内喷出流体和钻井液循环速度突然变为零对地层产生一个“液击”现象,给井口装置和地层可能带来不良后果。
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软关井是当发现溢流时,立即关闭防喷器的操作程序,关防喷器前阻流管汇是不通的。
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反循环打捞篮是利用钻井液流在靠近井底处的局部反循环将井下碎物收入篮框内的一种打捞工具。
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漏速小于每小时十立方米的漏失是裂缝性漏失。
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如果钻井液只进不出,此时应该立即停钻,将钻头起到套管内。
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投入式回压阀的卡瓦牙在卡瓦牙座的燕尾槽内应该滑动灵活,无卡阻。
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闸板阀开(关)到位后,手轮必须回旋1圈。
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