Guoan ZHANG

Person

Xi'an, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Composite perforation method and device with propping agent
- Patent number 9,297,243
- Issue date Mar 29, 2016
- Tong Oil Tools Co., Ltd.
- Guoan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Structure for gunpowder charge in multi-frac composite perforating...
- Patent number 9,297,242
- Issue date Mar 29, 2016
- Tong Oil Tools Co., Ltd.
- Guoan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Structure for gunpowder charge in combined fracturing perforation d...
- Patent number 9,027,667
- Issue date May 12, 2015
- Tong Oil Tools Co. Ltd.
- Guoan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combined fracturing and perforating method and device for oil and g...
- Patent number 8,960,289
- Issue date Feb 24, 2015
- Tong Oil Tools Co., Ltd.
- Guoan Zhang
- F42 - AMMUNITION BLASTING
Information Patent Grant
Structure for gunpowder charge in multi-frac composite perforating...
- Patent number 8,943,944
- Issue date Feb 3, 2015
- Tong Oil Tools Co., Ltd.
- Guoan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable head for petroleum logging
- Patent number 8,607,856
- Issue date Dec 17, 2013
- Tong Oil Tools Co., Ltd.
- Guoan Zhang
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
STRUCTURE FOR GUNPOWDER CHARGE IN MULTI-FRAC COMPOSITE PERFORATING...
- Publication number 20150107831
- Publication date Apr 23, 2015
- TONG PETROTECH INC
- Guoan ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
STRUCTURE FOR GUNPOWDER CHARGE IN MULTI-FRAC COMPOSITE PERFORATING...
- Publication number 20140060295
- Publication date Mar 6, 2014
- TONG PETROTECH INC
- Guoan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Application
COMPOSITE PERFORATION DEVICE WITH SCALLOPS ON THE INNER WALL
- Publication number 20140053715
- Publication date Feb 27, 2014
- TONG PETROTECH INC
- Guoan Zhang
- E21 - EARTH DRILLING MINING
Information Patent Application
STRUCTURE FOR GUNPOWDER CHARGE IN COMBINED FRACTURING PERFORATION D...
- Publication number 20130145924
- Publication date Jun 13, 2013
- TONG OIL TOOLS CO., LTD.
- Guoan ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
COMPOSITE PERFORATION METHOD AND DEVICE WITH PROPPING AGENT
- Publication number 20130146287
- Publication date Jun 13, 2013
- TONG OIL TOOLS CO., LTD.
- Guoan ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
COMBINED FRACTURING AND PERFORATING METHOD AND DEVICE FOR OIL AND G...
- Publication number 20130098681
- Publication date Apr 25, 2013
- Guoan Zhang
- F42 - AMMUNITION BLASTING
Information Patent Application
CABLE HEAD FOR PETROLEUM LOGGING
- Publication number 20110318088
- Publication date Dec 29, 2011
- TONG OIL TOOLS CO., LTD.
- Guoan Zhang
- E21 - EARTH DRILLING MINING

Guoan ZHANG

Person

Patents Grantslast 30 patents

Composite perforation method and device with propping agent

Structure for gunpowder charge in multi-frac composite perforating...

Structure for gunpowder charge in combined fracturing perforation d...

Combined fracturing and perforating method and device for oil and g...

Structure for gunpowder charge in multi-frac composite perforating...

Cable head for petroleum logging

Patents Applicationslast 30 patents

STRUCTURE FOR GUNPOWDER CHARGE IN MULTI-FRAC COMPOSITE PERFORATING...

STRUCTURE FOR GUNPOWDER CHARGE IN MULTI-FRAC COMPOSITE PERFORATING...

COMPOSITE PERFORATION DEVICE WITH SCALLOPS ON THE INNER WALL

STRUCTURE FOR GUNPOWDER CHARGE IN COMBINED FRACTURING PERFORATION D...

COMPOSITE PERFORATION METHOD AND DEVICE WITH PROPPING AGENT

COMBINED FRACTURING AND PERFORATING METHOD AND DEVICE FOR OIL AND G...

CABLE HEAD FOR PETROLEUM LOGGING