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CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELL

Overview
  • Total Patents
    14
  • GoodIP Patent Rank
    133,003
About

CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELL has a total of 14 patent applications. Its first patent ever was published in 2013. It filed its patents most often in China. Its main competitors in its focus markets basic materials chemistry, civil engineering and environmental technology are SHENGLI ADMIN SINOPEC DRILLING, 9668241 CANADA INC and XINJIANG BEIKEN ENERGY ENG CO LTD.

Patent filings in countries

World map showing CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELLs patent filings in countries
# Country Total Patents
#1 China 14

Patent filings per year

Chart showing CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELLs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lu Xiao 6
#2 Chen Hua 5
#3 Hu Zubiao 4
#4 Zhang Jianqing 3
#5 Nan Hongjun 3
#6 Wang Qingchen 3
#7 Zhu Mingming 3
#8 Liu Xuexiang 2
#9 Wu Fupin 2
#10 Song Shunping 2

Latest patents

Publication Filing date Title
CN105350908A Prying large-torque invertedly-arranged rotating disc driving device and technique forwell
CN105255459A Environment-friendly chlorine-free drilling fluid and preparation method thereof
CN105236549A Coagulant used for performing solid-liquid separation on waste drilling fluid in clean production and preparation method thereof
CN105295939A Curing agent for petroleum drilling clean production and preparing method of curing agent
CN105238367A Environment-friendly defoaming agent for well drilling and preparation method thereof
CN105041232A Cylindrical surface sealing thread structure for petroleum drilling tool
CN104917287A PDU power control system
CN104762070A Drilling liquid capable of passing through coal bed or carbonaceous mudstone for slant interval of horizontal well
CN104632117A Mechanical pulling and running tool
CN104712287A Extending method of horizontal well safe density window
CN104594824A Variable-diameter stabilizer capable of being controlled on ground
CN104610939A Drilling fluid with low chloride ion concentration and preparation method thereof
CN104497998A Salt-resistant and high-temperature-resistant organic salt emulsion drilling fluid and preparation method thereof
CN103146363A Composite salt low-activity anti-sloughing drilling fluid and construction method thereof