the correct countermeasures are taken to prevent the drill collar screw failure effectively, ensuring the qualitative reliability of drill collar screw.
通过采用合适的对策,有效预防鉆铤螺纹失效,从而保证鉆铤螺纹的质量可靠性。
main reasons of causing drill collar screw failure are discovered by way of further investigation and analysis on these problems.
通过对鉆铤螺纹失效问题的深入调查和分析,找出引起鉆铤螺纹失效的主要原因。
do not make up or break out the bit on a single joint of dc. if this is absolutely necessary, always snub drill collar with the air tugger.
不要在一单根鉆铤上卸鉆头,如果确实需要这样做,要用气动绞车拉住鉆铤。
in the event failures of boring tools, the fatigue failure of the drill collar is especially prominent.
在鉆具失效事故中,鉆铤的疲劳失效尤为突出。
as such, magnetic particle inspection for the screw thread of the drill collar is very necessary and important.
因而鉆铤内外螺纹的磁粉检测十分必要和重要。
take pin threads of nc50 drill collar as an example, finite element method is used to analyze the different stress-relief grooves of pin thread connection.
以nc50型鉆铤公螺纹作为研究对象,用有限元方法对加工有不同应力减轻槽的鉆铤公螺纹接头进行了分析计算。
in drilling exploration and well drilling industry, the drilling pipe and drill collar are key apparatus.
鉆桿和鉆铤等管状螺纹连接件,是鉆探和石油鉆井工业中的关键设备。
the fatigue failure of drilling collar thread linking is a main factor of the drill collar failure, which accounts for a large proportion of the accidents in the drilling tool failure.
鉆铤螺纹联结失效是鉆铤失效的主要因素,在整个鉆具失效事故中占很大比例。
on this basis, a new kind of unbending drill collar tool has been designed, which is probably to be a new kind of inclination preventive tool.
为此,设计了一种压不弯鉆铤装置,此装置有可能成为防斜打直的一种全新的井下鉆具。
after processing let thread, stress groove and double shoulder connection for the nc35 thread of drill collar in 43/4 inch, torsion tests were done.
4英寸)鉆铤nc35螺纹加工le螺纹、应力槽、双台肩后进行了实物抗扭性能试验,证实双台肩鉆铤具有很好的抗扭性能。
when picking up or setting down drill collar stands larger than 6 1/4「 on the floor board, always snub with the air tugger.」
当在鉆桿盒上提起或放置直径大于6 1/4〞的鉆铤立柱时,一定要用气动绞车拉住以保安全。
in this paper, the effects of chemical composition of the steel for oil drill collar on its properties were studied and the heat treatment process were optimized.
研究了石油鉆铤用钢的化学成分及其对性能的影响,并优化了热处理工艺。