Hydraulic bendable pen tip device
ZHENG BOQIANG, WAN WENCAI, HUANG BAOQIAN, ZHENG TINGBI, WANG WEN, ZHANG ZELI, ZHANG TENGFEI, JIN FENG
Year of Publication 06.03.2020
Get full text
Year of Publication 06.03.2020
Patent
Shock absorption method of top drive protection shock absorber and top drive protection shock absorber
WAN WENCAI, HUANG BAOQIAN, WANG WEN, ZHANG ZELI, ZHANG TENGFEI, JIN FENG
Year of Publication 24.01.2020
Get full text
Year of Publication 24.01.2020
Patent
Anti-shock hydraulic release fishing spear
WAN WENCAI, HUANG BAOQIAN, WANG LING, ZHENG TINGBI, YAN XIJIAO, WANG WEN, SHEN CHIWEI, ZHANG ZELI, ZHANG GUOWEI, DONG SHENGHUA, HUAN JIAMEI, BU SHENGJUN, ZHANG TENGFEI, JIN FENG
Year of Publication 03.06.2022
Get full text
Year of Publication 03.06.2022
Patent
Nitrogen accelerator and acceleration method thereof
WU YUANXIU, WANG LING, HUAN JIAMEI, CHEN XINMIN, LU CHAO, YAN XIJIAO, WANG YI, SHEN CHIWEI, ZHANG ZELI, XIA XIAOBO, YANG TINGHUA, DENG PING
Year of Publication 08.04.2022
Get full text
Year of Publication 08.04.2022
Patent
Method for press-fitting alloy column on plane and conical surface and tool used in method
YANG TONGHUA, LIANG ROU, WAN WENCAI, SONG DAE-HYUN, YAN XIJIAO, WANG WEN, ZHANG ZELI, HUANG RUIHAI, ZHANG TENGFEI, MA PEILIN, HU LEI, JIN FENG
Year of Publication 11.03.2022
Get full text
Year of Publication 11.03.2022
Patent
Anti-shock hydraulic release fishing spear
WAN WENCAI, HUANG BAOQIAN, WANG LING, ZHENG TINGBI, YAN XIJIAO, WANG WEN, SHEN CHIWEI, ZHANG ZELI, ZHANG GUOWEI, DONG SHENGHUA, HUAN JIAMEI, BU SHENGJUN, ZHANG TENGFEI, JIN FENG
Year of Publication 08.03.2022
Get full text
Year of Publication 08.03.2022
Patent
Double-slip hydraulic anchoring sealing device for window sidetrack drilling
ZHENG BOQIANG, HUANG BAOQIAN, WAN WENCAI, WANG LING, ZHENG TINGBI, WANG WEN, SHEN CHIWEI, ZHANG ZELI, ZHANG TENGFEI
Year of Publication 06.03.2020
Get full text
Year of Publication 06.03.2020
Patent
Fracture centering milling shoe
YANG TONGHUA, HUANG BAOQIAN, WAN WENCAI, LIANG ROU, ZHENG TINGBI, ZHANG PAN, WANG WEN, ZHANG ZELI, SHEN CHIWEI, ZHANG TENGFEI, JIN FENG
Year of Publication 24.11.2020
Get full text
Year of Publication 24.11.2020
Patent
A cutter that is used for in the elongated tubular bore hole or processing recess
YAN HONGJIANG, BAO CHANGHUA, WANG LING, ZHENG TINGBI, HUANG ZUOZE, CHEN YUNBING, LI HUIPING, ZHANG ZELI, WANG HUI, HU WEIYU, JIN FENG
Year of Publication 29.07.2015
Get full text
Year of Publication 29.07.2015
Patent
Spiral impregnated milling shoe with reaming function
YAN HONGJIANG, CAO LIANGBO, ZHENG TINGBI, LI JIE, BU SHENGJUN, LI HUIPING, SHEN CHIWEI, SUN MINGMING, ZHANG ZELI, ZHANG TENGFEI, WEI CHENXING
Year of Publication 20.05.2015
Get full text
Year of Publication 20.05.2015
Patent
Method and adopted tool for boring hole or machining groove in slender tube
YAN HONGJIANG, BAO CHANGHUA, WANG LING, ZHENG TINGBI, HUANG ZUOZE, CHEN YUNBING, LI HUIPING, ZHANG ZELI, WANG HUI, HU WEIYU, JIN FENG
Year of Publication 13.05.2015
Get full text
Year of Publication 13.05.2015
Patent
Milling shoe improving method and screw impregnated milling shoe with hole expanding function
YAN HONGJIANG, CAO LIANGBO, ZHENG TINGBI, LI JIE, BU SHENGJUN, LI HUIPING, SHEN CHIWEI, SUN MINGMING, ZHANG ZELI, ZHANG TENGFEI, WEI CHENXING
Year of Publication 15.04.2015
Get full text
Year of Publication 15.04.2015
Patent