![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
钻进过程中,由于钻具内防喷工具未安装或失效,导致钻具内失控会发生()
A.井漏
B.卡钻
C.井塌
D.井喷
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
D、井喷
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.井漏
B.卡钻
C.井塌
D.井喷
D、井喷
A.下钻时,井口不返钻井液,或者钻杆内反喷钻井液
B.起钻时若发生砂桥,则环空液面不降,而钻具水眼内的液面下降很快
C.钻具进入砂桥后,在未开泵以前,上下活动与转动自如,如要开泵循环,则泵压升高,悬重下降,井口不返钻井液或返出很少
D.在钻进时,如钻井液排量小,或携砂能力不好,在开泵循环过程中,钻具上下活动、转动均无阻力,一旦停泵则钻具提不起来