JEFFREY W. SPENCE

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for creating pressure pulses in a wellbore
- Patent number 8,347,965
- Issue date Jan 8, 2013
- Sanjel Corporation
- Jeffrey W. Spence
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND SYSTEM OF SLOW RATE PUMPING
- Publication number 20210324847
- Publication date Oct 21, 2021
- SANJEL ENERGY SERVICES INC.
- Ben Mattock
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND SYSTEM OF SLOW RATE PUMPING
- Publication number 20200080550
- Publication date Mar 12, 2020
- SANJEL ENERGY SERVICES INC.
- Ben Mattock
- E21 - EARTH DRILLING MINING
Information Patent Application
APPARATUS AND METHOD FOR CREATING PRESSURE PULSES IN A WELLBORE
- Publication number 20110108276
- Publication date May 12, 2011
- SANJEL CORPORATION
- JEFFREY W. SPENCE
- E21 - EARTH DRILLING MINING