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US3314478A
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Method and apparatus for drilling oil wells
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US3152646A
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Port collar
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US3152643A
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Liner hanger
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US3076509A
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Cementing head
|
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US2942670A
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Circulating shoe
|
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US3108638A
|
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Liner hanger and packer construction
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US3006414A
|
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Double-acting liner hanger
|
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US2916092A
|
|
By-pass liner hanging apparatus
|
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US2877850A
|
|
Liner hanger and packer
|
|
US2942664A
|
|
Liner and gravel packing apparatus for wells
|
|
US2864450A
|
|
Multiple unit packing casing bowl
|
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US2842213A
|
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Multiple slip casing hanger
|
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US2589337A
|
|
Liner hanger
|
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US2310572A
|
|
By-pass type liner hanger
|
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US2337733A
|
|
Liner hanger
|
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US2099048A
|
|
Setting tool
|
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US2078122A
|
|
Traveling block
|
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US2097615A
|
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Casing head
|
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US2067377A
|
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Safety joint
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US2007155A
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Crown block
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