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DOWNHOLE WIRELINE TOOL
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Welltec A/S
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Tomas Sune ANDERSEN
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E21 - EARTH DRILLING MINING
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WELL DRILLING ACCELERATION TOOL
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Publication number 20230003084
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Publication date Jan 5, 2023
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China Petroleum and Chemical Corporation
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Haiping ZHANG
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E21 - EARTH DRILLING MINING
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DRILLING TOOL
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Publication number 20220412165
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Publication date Dec 29, 2022
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China Petroleum and Chemical Corporation
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Baoping LU
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E21 - EARTH DRILLING MINING
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BORING APPARATUS AND METHOD
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Publication number 20200232282
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Publication date Jul 23, 2020
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Gunther HH von Gynz-Rekowski
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E21 - EARTH DRILLING MINING
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Down-Hole Vibrational Oscillator
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Publication number 20190100965
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Publication date Apr 4, 2019
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AOI (Advanced Oilfield Innovations, Inc.)
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Andre Orban
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BORING APPARATUS AND METHOD
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Publication number 20180291687
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Publication date Oct 11, 2018
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Ashmin Holding LLC
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Gunther HH von Gynz-Rekowski
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E21 - EARTH DRILLING MINING
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HAMMER DRILL
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Publication number 20180283101
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Publication date Oct 4, 2018
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Ashmin Holding LLC
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Gunther HH von Gynz-Rekowski
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E21 - EARTH DRILLING MINING
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PERCUSSION DEVICE
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Publication number 20180274298
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Publication date Sep 27, 2018
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Jaron Lyell Mcmillan
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E21 - EARTH DRILLING MINING
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UP DRILL APPARATUS AND METHOD
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Publication number 20180252040
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Publication date Sep 6, 2018
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Ashmin Holding LLC
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Gunther HH von Gynz-Rekowski
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E21 - EARTH DRILLING MINING
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IMPACT-DRIVEN DOWNHOLE MOTORS
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Publication number 20180119491
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Publication date May 3, 2018
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DRECO ENERGY SERVICES ULC
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Mark SHEEHAN
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Hammer Drill Mechanism
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Publication number 20170356248
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Publication date Dec 14, 2017
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Halliburton Energy Services, Inc.
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John Siu Lun Tsang
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Annulus Ring Hole Drill
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Publication number 20130306379
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Publication date Nov 21, 2013
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TOP MARK MECHANICAL EQUIPMENT LIMITED
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Leung Choi Chan
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E21 - EARTH DRILLING MINING
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Hammer Drill
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Publication number 20130264119
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Publication date Oct 10, 2013
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Gunther H-H. von Gynz-Rekowski
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E21 - EARTH DRILLING MINING