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2025
|
G/S
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Oil and gas drill pipes of metal Design of oil and gas drill pipes of metal |
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2024
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G/S
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Metal oil and gas well drill pipe, heavyweight, namely heavy gauge drill pipe; rotary drill strin... |
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2022
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G/S
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Oil and gas well drill pipe, heavyweight, namely heavy gauge drill pipe; rotary drill string subs... |
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2019
|
Invention
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Premium threaded connection and method for making same. A method of converting a tubular having N... |
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2017
|
Invention
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Drill pipe |
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|
Invention
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Box and pin threaded connection for a tubular. A box connection and a pin connection for a ... |
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|
Invention
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Box and pin threaded connection for a tubular. A method for converting a general purpose NC46 oil... |
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Invention
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Method to recut a tubular. A method of converting a tubular having NC46 connections to CETO... |
