THREADFORM HAVING CREST TO ROOT THREAD COMPOUND RELIEF AREAS

    公开(公告)号:WO2019126509A1

    公开(公告)日:2019-06-27

    申请号:PCT/US2018/066812

    申请日:2018-12-20

    Abstract: A connection includes a first tubular member having a first screw threadform defined by a first plurality of crests, roots, and flanks, where each flank separates each crest from each root. The connection also includes a second tubular member having a second screw threadform defined by a second plurality of crests, roots, and flanks, where each flank separates each crest from each root. The crests and roots are substantially axial to the tubular members and the flanks are substantially radial to the tubular members. The first tubular member and the second tubular member are configured to connect when the first threadform engages with the second threadform. Thread compound relief spaces are formed between the first plurality of crests and the second plurality of roots when the first and second tubular members connect.

    CURVILINEAR SEALING SYSTEM
    2.
    发明申请

    公开(公告)号:WO2018208503A1

    公开(公告)日:2018-11-15

    申请号:PCT/US2018/029267

    申请日:2018-04-25

    Abstract: A sealing system connecting first and second tubular members includes a first curvilinear sealing surface on the first tubular member and a second curvilinear sealing surface on the second tubular member. Both the first and second curvilinear sealing surfaces are disposed between two sets of threading on the respective first and second tubular members. When the first and second tubular members are in a connected configuration, the first and second curvilinear sealing surfaces contact and interfere to form an annular curvilinear center seal. A relief pocket may be disposed adjacent to the first and/or second curvilinear sealing surfaces to contain excess lubricant between the first and second tubular members.

    WEDGE THREADFORM HAVING CREST TO ROOT THREAD COMPOUND RELIEF AREAS

    公开(公告)号:WO2019126522A1

    公开(公告)日:2019-06-27

    申请号:PCT/US2018/066835

    申请日:2018-12-20

    CPC classification number: E21B17/042 E21B19/16 F16L15/006 F16L15/06 F16L15/08

    Abstract: A connection includes a first tubular member having a first screw threadform defined by a first plurality of crests, roots, and flanks, where each flank separates each crest from each root. The connection also includes a second tubular member having a second screw threadform defined by a second plurality of crests, roots, and flanks, where each flank separates each crest from each root. The crests and roots are substantially axial to the tubular members and the flanks are substantially radial to the tubular members. The first tubular member and the second tubular member are configured to connect when the first threadform engages with the second threadform. Thread compound relief spaces are formed between the first plurality of crests and the second plurality of roots and between the second plurality of crests and the first plurality of roots when the first and second tubular members connect.

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