Inventor · disambiguated record
Zhichuan Guan
Also filed as: GUAN ZHICHUAN
8 granted patents·2 pending applications·5 citations·filing 2012–2022
73Inventor score
Technology areasE21B
Top patents by PatentIndex Score
10 records- 0176US10233695B2Weight-on-bit self-adjusting drill bitUNIV CHINA PETROLEUM EAST CHINA·Filed 2017·Granted Mar 19, 2019·4 cites·16 claims
- 0262US10718176B2Drilling speed improvement device capable of producing both hydraulic pulse and impact vibrationUNIV CHINA PETROLEUM EAST CHINA·Filed 2019·Granted Jul 21, 2020·1 cites·3 claims
- 0344US11255127B2Drill bit with joint function of induced unloading and abrasive jet and drilling method thereofUNIV CHINA PETROLEUM EAST CHINA·Filed 2019·Granted Feb 22, 2022·0 cites·1 claims
- 0437US10815743B2Depressuriz od for downhole annulus drilling fluidUNIV CHINA PETROLEUM EAST CHINA·Filed 2020·Granted Oct 27, 2020·0 cites·15 claims
- 0535US11976554B2Bottom-hole impact-rotation stepping combined unloading rock-breaking efficient drilling system and method thereofUNIV CHINA PETROLEUM EAST CHINA·Filed 2021·Granted May 7, 2024·0 cites·8 claims
- 0635US2022170361A1Risk assessment-based design method for deep complex formation wellbore structureUNIV CHINA PETROLEUM·Filed 2022·Application pending·0 cites
- 0730US10927607B2Drilling speed increasing device driven by downhole motor for generating shock vibrationUNIV CHINA PETROLEUM EAST CHINA·Filed 2020·Granted Feb 23, 2021·0 cites·1 claims
- 0830US2021011194A1Risk assessment-based design method for deep complex formation wellbore structureUNIV CHINA PETROLEUM·Filed 2020·Application pending·0 cites
- 0929US10801282B2Screw drill bypass valve with large displacement diversion functionUNIV CHINA PETROLEUM EAST CHINA·Filed 2018·Granted Oct 13, 2020·0 cites·2 claims
- 1026US9540881B2Method and system for improving drilling speed by using drill speed vibrationGUAN ZHICHUAN·Filed 2012·Granted Jan 10, 2017·0 cites·13 claims
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