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1. (WO2018040283) COILED TUBING CLAMPING DEVICE AND INJECTION HEAD USING SAME

Pub. No.:    WO/2018/040283    International Application No.:    PCT/CN2016/105135
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Nov 10 00:59:59 CET 2016
IPC: E21B 19/22
Applicants: JIANGSU HEXIN PETROLEUM MACHINERY CO., LTD.
江苏和信石油机械有限公司
Inventors: HU, Yule
胡郁乐
LIU, Zhiqiang
刘志强
ZHAO, Junxian
赵钧羡
ZHAO, Xiuhe
赵秀和
DUAN, Longcheng
段隆臣
HU, Xinli
胡新丽
LI, Bo
李波
CUI, Shiming
崔世明
DING, Yangyang
丁扬扬
CUI, Yizhou
崔一洲
DING, Yuexiang
丁跃翔
YAO, Linli
姚林丽
SHEN, Xiaoyu
沈笑宇
SUN, Cunfeng
孙奉存
WANG, Suogen
王所根
HAN, Jingjing
韩晶晶
Title: COILED TUBING CLAMPING DEVICE AND INJECTION HEAD USING SAME
Abstract:
Disclosed are a coiled tubing clamping device and an injection head using the clamping device. An inner surface of a clamping block (1) of the clamping device is a trapezoid-shaped clamping opening; the bottom of the clamping opening is arc-shaped, and clamping ribs and grooves (1-1) are alternatingly distributed on both sides of the clamping opening, wherein the clamping ribs comprise plastic clamping ribs (1-2) and rigid clamping ribs (1-3) that are arranged apart from each other, and the plastic clamping ribs (1-2) and the rigid clamping ribs (1-3) are alternatingly arranged. The clamping device may reduce wear and tear of the inner surface of the clamping block and damage to a coiled tubing, and may also increase clamping force of the clamping block in clamping a tubing, thereby improving the operational effect and work efficiency of the device, and extending the service life of the device.