OIL WELL STEEL PIPE WITH THREADED CONNECTION, METHOD FOR PRODUCING OIL WELL STEEL PIPES CONNECTED BODY USING OIL WELL STEEL PIPE WITH THREADED CONNECTION, AND METHOD FOR PRODUCING OIL WELL STEEL PIPE WITH THREADED CONNECTION
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United States of America Patent
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Issued Date -
Jun 20, 2024
app pub date -
Apr 28, 2022
filing date -
Apr 28, 2022
priority date (Note) -
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Abstract
This invention provides an oil well steel pipe with a threaded connection with which excellent galling resistance is obtained without using a compound grease, and which can suppress the occurrence of rust on a pin contact surface and can also keep shouldering torque at a low level. An oil well steel pipe with a threaded connection of the present disclosure includes a pipe main body including a first end portion and a second end portion. The pipe main body includes a pin formed at the first end portion, and a box formed at the second end portion. A light oil is applied to a pin contact surface of the pin. A solid lubricant coating is formed on a box contact surface of the box.
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