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DAGANG OILFIELD GROUP CO LTD

Overview
  • Total Patents
    125
  • GoodIP Patent Rank
    16,431
  • Filing trend
    ⇧ 300.0%
About

DAGANG OILFIELD GROUP CO LTD has a total of 125 patent applications. It increased the IP activity by 300.0%. Its first patent ever was published in 2002. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, basic materials chemistry and measurement are QINGDAO DADI NEW ENERGY TECH RESEARCH INSTITUTE, CNPC BOHAI DRILLING ENG CO LTD and WILLBERG DEAN.

Patent filings in countries

World map showing DAGANG OILFIELD GROUP CO LTDs patent filings in countries
# Country Total Patents
#1 China 125

Patent filings per year

Chart showing DAGANG OILFIELD GROUP CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cheng Jing 26
#2 Yang Weihua 26
#3 Ge Hongjiang 26
#4 Lei Qiling 25
#5 Yi Bo 15
#6 Liao Xingsong 14
#7 Fu Daqi 13
#8 Lei Qisong 13
#9 Ren Guishan 13
#10 Pei Yuxin 12

Latest patents

Publication Filing date Title
CN110791271A Viscosity-reducing sand-carrying liquid and preparation method thereof
CN110805413A Method for identifying and judging diameter of oilfield water injection channeling channel
CN110699062A Epoxy resin coating proppant and preparation method and construction process thereof
CN110643338A Corrosion inhibitor with oil displacement effect
CN110711690A Underwater coating anticorrosion process for inner walls of casing pipes of oil production well and water injection well
CN110821467A Pressure-resistant visual self-supporting fracturing process research experimental device
CN110805423A Whole-course visual self-supporting fracturing process research device
CN110821466A Visual self-supporting fracturing technology research experimental apparatus with variable seam width
CN110805437A Visual device for simulating flow law of self-supporting fracturing fluid with variable seam width
CN110939421A Experimental device for visual simulation self-supporting fracturing fluid flow law
CN110805418A Large-displacement adjustable continuous self-supporting fracturing process research device
CN110805429A Dynamic fracture self-supporting fracturing process research device and diversion determination method thereof
CN110806365A Dynamic fracture self-supporting fracturing process research device and friction resistance measurement method thereof
CN110792426A Visual dynamic fracture self-supporting fracturing process research experimental device
CN110821465A Large-displacement adjustable visual self-supporting fracturing process research experimental device
CN110939423A Experimental device for withstand voltage visual simulation self-supporting fracturing fluid flow law
CN110805422A Dynamic fracture self-supporting fracturing process research device and observation operation method thereof
CN110713824A Anti-adsorption composite oil displacement system and preparation method thereof
CN110837687A Oil well water content online measuring device based on data fusion and precision improving method
CN110643337A Degradation agent for removing polymer blockage of sand control well near wellbore zone of screen pipe in polymer injection zone and preparation method and application thereof