1) tight hole
井径缩小的井眼
2) hole shrinkage
井眼缩径
1.
Serious hole shrinkage often occurs during drilling, which leads to the instability of borehole, the drill gets stuck and the annular tubes be pressed to break, which brings huge economic loss to the drilling.
在钻井过程中,钻开盐膏层后,原地层中地应力的相对平衡状态被打破,在井璧岩石上产生了较强的应力集中,在横向挤压力的作用下,盐膏层发生蠕动和变形,向井中滑移和流动,导致井眼缩径和失稳。
3) loss of working diameter
井径缩小
4) undergauging deformation of horizontal hole
井眼缩径变形
5) slim hole well
小井眼井
1.
In order to solve the difficulties in fracturing in slim hole and casing deformation wells,according to the specialty of slim hole and casing deformation wells and the reality of minor diameter downhole tools,the Y341-70 packer and K341-98 packer are developed and the design of downhole technique string is accomplished for Ф89 mm and Ф127 mm casing slim hole wells and Ф139.
为解决小井眼及套变井的压裂难题,针对小井眼及套变井的特点和目前小直径工具的实际情况,研制和改进了Y341-70和K341-98小直径封隔器,完成了Ф89mm、Ф127mm套管小井眼井和Ф139。
6) rat hole
鼠洞;井底部小直径井眼
补充资料：井径
1.田间小路。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条