bottom hole assembly 井下钻具组合
maintain the angle 稳斜
rigid packed hole assembly 刚性满眼钻具组合
pendulum drill-assembly 钟摆钻具组合
straighten the hole 纠斜
tapered drill-assembly 塔式钻具组合
stabilizer 扶正器
anti-deviation control and deviation building up 防斜，稳斜，增斜
reasonable 合理的
The reasonable length of the bottom hole assembly depends on the weight on bit. Normally , the maximum weight on bit is roughly equal to 70% of the total weight of the bottom hole assembly.
Up to standard 达到标准
Packed-hole stabilizer = full hole stabilizer 满眼扶正器
Down hole complicated condition 井下复杂情况
Drifting drilling assembly 通井钻具组合
Drilling jar 随钻震击器
Heavy wall drill pipe 加重钻杆
Shock absorber 减震器
To reduce the excessive impact on a drilling bit so as to prolong the life of the bit
Fishing assembly 打捞钻具组合
Make-up sub ,safety sub ,drilling jar ,drill collar and accelerator 对口接头，安全接头，随钻震击器，钻铤，加速器
Slip socket 卡瓦打捞筒
At the bottom of the drill-string assembly
The 150 m drill pipe shall be used when the deviation angle is between 0°∽35°，the 250∽300 m heavy drill pipe be used between 35°∽80°,and the 300∽400 m heavy drill pipe be used at 80°and above.
Power drilling assembly 井下动力钻具组合
It consists of drilling bit , power drilling tool ,bent sub ,non-magnetic drill collar ,six drill collars and twelve heavy wall drill pipe 动力钻具，弯接头，无磁钻铤
S135 means that the tensile strength is 135psi.
Safety slip 安全卡瓦
Fingerboard 指梁
Small hoist 小气葫芦
Neutral point 中和点
once every three months for continuous operation
Mud non- corrosive ring 泥浆腐蚀环
Hydraulic power station 液压箱
Scraper 刮泥器
Automatic trip-in devices 自动灌浆器
Sensor 传感器
Trip tank = meter tank 计量罐
Slug the drill pipe 打入重浆
Pump stroke 泵冲
Mud saver 防喷盒
Doghouse 偏房
Dies , jaws ,hydraulic tong 钳牙，钳头，液压大钳
Lifting sub 提升短节
18 degrees shoulder elevator 18度斜坡吊卡
cock 旋塞
rope 兜绳 monkey board 二层台
hammer and adjustable wrench 榔头和活动扳手
escape equipment 逃生装置
derrick 井架
crown-o-matic 防碰天车
adjust 调整
gear’s position 挡位
reaming bit and bit breaker 划眼钻头以及钻头盒
foreman’s warehouse 大班房
steel roller 钢卷尺
tape 皮尺
lay down the drill string 甩钻具
after the cementing operation
dope 铅油
it is better to apply it with the sealing film 密封膜
dummy trip 短起下
torque indicator 扭矩表
chain tong 链钳
pipe tong 管钳
four jet bit 四水眼喷射钻头
diamond bit 金钢石钻头
bit sub 钻头接头
It is a bell sub ,convenient for fishing 钟式接头
Reaming bit
Six pulse nozzles 6个脉冲水眼
Shock absorber 减震器
Retrievable-sleeve stabilizer 可换滑套式扶正器
Drilling jar shake up and down 随钻震击器上下震击
Under tensile condition
Coring tools coring bit coring barrel
Measurement while the drilling 随钻测斜仪
Cross-over sub 配合接头
The same type of thread
Are the last joints of the drill pipes stands or single joints ?
Kelly saver sub 方保接头
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