1) crooked hole
钻弯
2) borehole deviation
钻孔弯曲
1.
Through analyses of geological,skill and technological factors caused borehole deviation during drilling construction put forward preventing measures to install construction equipment correctly and use rational drilling tool structure.
通过对造成钻探工程施工中钻孔弯曲的地质、技术和工艺等因素的分析,提出了正确安装施工设备,采用合理的钻具结构的预防措施,并介绍了常用的下垂法、上漂法和封孔重开法在纠斜中的应用情况。
3) double bent PDM
双弯钻具
1.
The method and formula of simplifying double bent PDM to equivalent single bent PDM is presented and the integrated equations applied to DKO and DTU are derived and a step equivalent method of simplifying double bent(mutibent) PDM to single bent PDM is provided.
提出了把双弯钻具简化为等效单弯钻具的方法和公式 ,建立了适用于同向、反向双弯的统一表达式 ,并给出了把三弯 (多弯 )钻具简化为单弯钻具的分步等效方法。
4) curved drilling
弯曲钻孔
5) bend of drill pipe
钻杆弯曲
6) bended borehole
拐弯钻孔
1.
Six large diameter bended boreholes were drilled in Yangquan Coal Mine.
对于通过上邻近层抽放瓦斯的煤矿,如果使用受控定向钻进技术施工大直径拐弯钻孔,和常规钻孔相比较,就可以在保证钻孔轨迹远离垮落带的同时,延长钻孔在卸压带的长度,实现高效安全抽放瓦斯。
补充资料：长春冷弯型钢总厂生产的异形冷弯型钢
长春冷弯型钢总厂生产的异形冷弯型钢
长春冷弯型钢总厂生产的异形冷弯型钢
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