Roger H. Silva

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole eccentric reamer tool and related systems and methods
- Patent number 11,441,360
- Issue date Sep 13, 2022
- National-Oilwell Varco, L.P.
- Michael James Bailey
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bi-center bit and drilling tools with enhanced hydraulics
- Patent number 10,927,608
- Issue date Feb 23, 2021
- National-Oilwell Varco, L.P.
- Navid Omidvar
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole cutting tool
- Patent number 9,410,379
- Issue date Aug 9, 2016
- National Oilwell DHT, L.P.
- Roger H. Silva
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DOWNHOLE ECCENTRIC REAMER TOOL AND RELATED SYSTEMS AND METHODS
- Publication number 20220195808
- Publication date Jun 23, 2022
- National-Oilwell Varco, L.P.
- Michael James Bailey
- E21 - EARTH DRILLING MINING
Information Patent Application
Bi-Center Bit and Drilling Tools with Enhanced Hydraulics
- Publication number 20180230753
- Publication date Aug 16, 2018
- National-Oilwell Varco, L.P.
- Navid Omidvar
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole Cutting Tool
- Publication number 20130161099
- Publication date Jun 27, 2013
- National Oilwell DHT, L.P.
- Roger H. Silva
- E21 - EARTH DRILLING MINING