Drilling derrick that working many years often has the defect of bending bar.
服役多年的钻机井架常会出现局部杆件弯曲现象。
Later, bent screw drills and MWD (measurement while drilling) technology for deviation measuring and straightening are applied.
后使用弯螺杆动力钻具MWD随钻测斜纠斜技术,通过控制钻压、螺杆弯度、工具面,定向与复合钻进来对井斜进行控制,用正确方法精心调整反扭角、选用抗高温高压MWD和动力钻具、下钻分段循环降温等措施克服了超深井段给工具使用带来的问题,有效地控制住了井斜,优质高效地完成了钻井任务。
The influences of the structure bend angle of 120mm single bend PDM, stabilizer clearance and deviation angle on friction drag of running PDM were calculated and analyzed.
应用非线性有限元方法,研究了侧钻水平井钻井过程中,弯外壳螺杆钻具在套管内下入可行性的问题,计算了Φ120单弯螺杆钻具结构弯角、稳定器间隙以及井斜角对螺杆钻具下入摩阻的影响,并给出了使得螺杆顺利下入时螺杆之上钻具的长度,以此判断螺杆是否需要借助外力就能安全下入套管内。
ANALYZING SELF-LOCKING PHENOMENON OF PDM(POSITIVE DISPLALEMENT MOTOR) WITH BENT SUB IN SAIPING 1 WELL
塞平—1井所用单弯螺杆动力钻具自锁现象分析
LEAD SCREW LINEAR ULTRASONIC MOTOR USING BENDING VIBRATION MODES
基于弯振模态的螺纹杆式直线超声电机(英文)
This small curved to spiral rod-shaped bacterium is found in the surface epithelial mucus of most patients with active gastritis.
在大多数急性胃炎病人的黏膜上皮可见小弯曲螺旋状杆菌。
draw-bar carrier bolt
牵引杆托(板)螺栓
Hexagon bolts with split pin hole on shank--Reduced shank--Product grade B
GB/T31.2-1988六角头螺杆带孔螺栓细杆B级
Install connecting rod bolt protectors on rod bolts.
在连杆螺栓上安装连杆螺栓保护件。
Processing Method of Screw for Conical Twin-screw Extruder
锥形双螺杆削挤出机螺杆的加工方法
pipe bend with female thread
两头带阴螺纹的弯头
optical fibre helical microbend sensor
光纤螺旋微弯传感器
He went to the parapet and leaned over.
他走到栏杆边，弯身俯视。
pepe bend with male and female thread
一头带阳螺纹一头带阴螺纹的弯头
If we bend a rod, it bends.
如果我们弯曲一个杆，它会弯曲。
disappearing finger auger
偏心扒杆式输送螺旋
lead screw monocomparator
导杆螺旋单象坐标仪
unloading auger clutch lever
卸粮螺旋离合器接合杆
marine screw type condensing unit
船用螺杆式冷凝装置
tightening bolt
拉紧螺栓，(铁)风口拉杆
cross point square blade screwdriver with plastic handle
十字塑料柄方杆螺丝刀