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  • Drilling thread types for dummies - Odfjell Technology
    These premium connections have the same thread profile as the corresponding API connections Examples of this are Vam Eis, DSTJ, GPDS, etc If there is space enough for a secondary shoulder in the API box, this can be a solution In these scenarios the API box typically has a bore back (BB)
  • DPM-FAQSeries Topic 4: What is Stress-Relief Groove (SRG . . . - DP-Master
    Pin Stress-Relief Groove (SRG) and Box Boreback (BB) fall under Product Optional Features in API 7-2 Specification for Threading and Gauging of Rotary Shouldered Thread Connection
  • Casing Connections Types | API Premium - Drilling Manual
    The BTC thread has higher joint and bending strengths than LTC (or STC) As a result, this thread is often used in deeper wells where higher hook loads are experienced Thread compound must also be used to obtain a seal with BTC BTC is also run in horizontal wells where doglegs can cause high bending loads on larger casings
  • Types of Oilfield Pipe Threads - MSI - MSI Pipe Protection
    Oilfield thread protectors need to match the exact dimensions of the design criteria MSI Pipe Protection Technologies provides pipe thread protectors for every kind of specification to help onshore and offshore operators
  • Drill collar Connection Type - Blog - Vigor Drilling
    Another prevalent type is the API bore back box connection In this design, the female, or box, component of the connection features a stepped or "bore-backed" internal profile that is positioned towards the center of the connection
  • Connection types - DrillingForGas
    Threaded casing connections can be divided in two groups, namely the integral connections and the threaded and coupled connections Each group can further be divided into several types, depending on the sealing mechanism and the existence of a torque shoulder
  • Different Types Of Threads In Oil And Gas – API Coupling
    There are three types of threading: long-threaded connections (LTC), short-threaded connections (STC), and buttress-threaded connections (BTC) Each type has its pros and cons when it comes to safety, cost and efficiency What Is a Coupling? A coupling is a piece of steel that slips over the pipe to join two lengths of threaded pipe
  • Case Study: API Box Boreback Stress Relief With Truncated . . . - OnePetro
    A rotary shouldered connection (RSC) can be modified with two stress relief features to improve its fatigue performance: 1) A stress relief groove on the pin and or 2) A boreback feature on the box, commonly called a box boreback


















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