| THREADING TO API SPECIFICATIONS |
| API Threads with couplings are extra strong for deep and high-deviated wells. Where tensile and axial loads on casing are high, such as that encountered in deep high-angle holes, extra joint strength is needed. Our Landis threading machines produce this extra strength with API Threads either short, long or buttress. |
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Buttress threads |
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BUTTRESS THREADS offer extra strength since the horizontal effect of tensile load is less than friction load, thus minimizing the risk of jump-out and the resulting joint failure |
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Couplings |
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COUPLINGS are long enough to fully engage runout threads, thus providing joint strength virtually equal to original pipe strength.
B&B furnishes API tubing and casing couplings. |
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| SECURITY FLUSH JOINT THREADS/VENTURA FLUSH JOINT THREADS |
Ventura/Security flush joint threads are still an effective connection for oilfield liners! Flush joints, a standard of the drilling industry, continue to serve the purpose for which they were designed: A strong connection between pipe sections, flush inside and out, without couplings! The thread profile is a modified buttress type.
The reverse bevel of the outer (Primary) shoulder tends to prevent the box from spreading during joint make-up while providing an outer fluid pressure seal. |
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SFJ |
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The Ventura/Security Thread |
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utilized in flush joints can withstand all the destructive forces imposed on well liners downhole. In addition they provide Additional advantages |
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High resistance to damage in stabbing |
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Minimimum revolutions required to make-up and shoulder the joint |
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