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CNPC GREATWALL DRILLING CO

Overview
  • Total Patents
    351
  • GoodIP Patent Rank
    6,997
  • Filing trend
    ⇩ 17.0%
About

CNPC GREATWALL DRILLING CO has a total of 351 patent applications. It decreased the IP activity by 17.0%. Its first patent ever was published in 2008. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, basic materials chemistry and computer technology are ROGALANDSFORSKNING, NENNIGER JOHN and PUBLICHNOE AKTSIONERNOE OBSHCHESTVO «TATNEFT» IMENI V D SHASHINA.

Patent filings in countries

World map showing CNPC GREATWALL DRILLING COs patent filings in countries
# Country Total Patents
#1 China 351

Patent filings per year

Chart showing CNPC GREATWALL DRILLING COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Naizhen 35
#2 Xiao Jiaqi 30
#3 Deng Xu 29
#4 Shi Lianhai 26
#5 Yu Lei 26
#6 Xie Yubei 26
#7 Liu Pingquan 25
#8 Yang Fan 22
#9 Wang Xigui 22
#10 Han Long 21

Latest patents

Publication Filing date Title
CN111154038A Oil well cement dispersant and preparation method thereof
CN110984859A Radial horizontal drilling and sand prevention well completion tool and method
CN111103197A Tool and method for testing differential pressing inside and outside underground measuring instrument
CN110761716A PDC drill bit
CN110700784A Electric control downhole pipe cutting tool
CN110852018A PSO drilling parameter optimization method based on neural network
CN110805420A Real-time monitoring and technical support system for fracturing data
CN110714745A Shale gas horizontal well fracturing staged optimization method
CN110821496A Organic shale phase mode establishing method and organic shale evaluation method
CN110850505A Shale pencil stone belt division model establishing method and shale pencil stone belt division method
CN110485923A A kind of half way rotation borehole trace control tool
CN110628452A Method for recovering base oil from oil-based rock debris
CN110628451A System for recovering base oil from oil-based rock debris
CN110564387A ultrahigh-density environment-friendly gas-to-oil synthetic base drilling fluid and preparation method thereof
CN110513075A A kind of solvable bridge plug and accelerate bridge plug dissolution can dissolving device
CN110513074A Dissolvable bridge plug
CN110374570A A kind of bi-lateral horizontal well naked eye staged fracturing construction method
CN110359896A A kind of dual-lateral well fracturing technology method
CN110533163A Sand plugging after fracturing method for early warning based on long Memory Neural Networks in short-term
CN110220191A The controllable open flow gas burner of intake