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PETROCHINA COALBED METHANE CO LTD

Overview
  • Total Patents
    20
  • GoodIP Patent Rank
    85,276
  • Filing trend
    ⇧ 300.0%
About

PETROCHINA COALBED METHANE CO LTD has a total of 20 patent applications. It increased the IP activity by 300.0%. Its first patent ever was published in 2017. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, basic materials chemistry and it methods for management are HAITA PETROLEUM TECH CO LTD, EQUINOR US OPERATIONS LLC and BEJKER KHYUZ E DZHII KOMPANI LLK.

Patent filings in countries

World map showing PETROCHINA COALBED METHANE CO LTDs patent filings in countries
# Country Total Patents
#1 China 20

Patent filings per year

Chart showing PETROCHINA COALBED METHANE CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Peng Hongzhao 10
#2 Zhen Huaibin 8
#3 Zhu Weiping 7
#4 Sun Wei 5
#5 Hou Wei 4
#6 Wu Nan 4
#7 Wang Chengwang 4
#8 Chen Shuai 4
#9 Zhang Tianxiang 4
#10 Ji Yuan 3

Latest patents

Publication Filing date Title
CN112267863A Temporary plugging and re-fracturing method for coal-bed gas well cracks
CN112250369A Crack plugging consolidation agent, preparation method and crack plugging method
CN112267867A Deep coal bed gas well volume acidizing fracturing method
CN112210362A Solid gel breaker, preparation method and method for delaying gel breaking time
CN111339481A Well testing analysis method for coal-bed gas well
CN111305794A Method for keeping high permeability of coal rock
CN111396020A Evaluation method for interference between coal-bed gas wells
CN111415031A Method for predicting productivity of coal-bed gas well
CN111042782A Method for recovering production of coal bed gas well
CN110984972A Method for calculating gas-water permeability of coal bed gas in different production stages
CN110805438A Method for determining critical desorption pressure of coal bed gas
CN110685645A Two-stage jet drainage device and method for coal-bed gas well mouth
CN110388226A A kind of coal bed gas well negative pressure mining control device and system
CN110054440A A kind of coal bed gas well cementation low-temperature high-early strength low weight cement slurry
CN109652052A A kind of preparation method of fracturing fluid, gel breaker, fracturing fluid system and fracturing fluid
CN109575891A A kind of leak stopping slurry and preparation method thereof
CN109209349A A kind of CBM Fracturing horizontal well multiple spot monitoring system
CN108533241A A kind of CBM Fracturing method
CN108276981A A kind of fracturing liquid rubber-breaking accelerating agent, fracturing fluid system and their preparation method
CN107313721A Pumpingh well impressed current method anti-corrosive apparatus