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US3648777A
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Well bore circulating tool including positioning method by casing annulus fluid stretching tubing string
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US3406770A
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Jarring tool
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US3380464A
|
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Thermostatic freezing valve
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US2981331A
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Method and apparatus for testing tubing and for scraping matter from the inner wall thereof
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US2935132A
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Well screen perforation cleaner
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US2925866A
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Well tools employable as bailers, fishing tools, jars, and the like, of the delayed action type
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US2870992A
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Jar operable upon release of vacuum
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US2843399A
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Safety joint with detent latch means disengageable without rotation
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US2839315A
|
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Safety joint with shear pin release means
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US2847073A
|
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Tool for controlling fluid circulation in well bores
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US2740481A
|
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Cleaning tool
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US2696257A
|
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Fishing tool
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CA626337A
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Tool for controlling fluid circulation in well bores
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