发明名称 |
EXPANDABLE JOINT CONNECTOR |
摘要 |
Methods and apparatus are provided for obtaining a secure mechanical connection and a pressure-tight seal in the overlapping area of two telescoping tubular bodies (26 and 27). The two bodies, including the overlapping area, are radially expanded to increase the inside diameter of the bodies. The expansion forces an annular seal (28) in the overlapping area into a pressure-sealing engagement between the bodies. A string of pipe assembled from joints secured to each other by telescoping, threadedly engaged expanded pin (26) and box (27) connections may be radially expanded into a surrounding well bore to provide a cased well having an internal diameter greater than the original internal diameter of the pipe string. The annular seal in the connection comprises an annular elastomeric seal ring (29) and an annular Teflon spacer ring (30). Radial expansion of the connection causes axial contraction of the groove (31), which acts with the spacer ring to expand the seal ring radially to seal the annular space created between the expanded pin (26) and box (27). |
申请公布号 |
WO0104520(A1) |
申请公布日期 |
2001.01.18 |
申请号 |
WO2000US40341 |
申请日期 |
2000.07.11 |
申请人 |
ENVENTURE GLOBAL TECHNOLOGY, LLC |
发明人 |
EVANS, M., EDWARD;COSTA, D., SCOTT |
分类号 |
E21B17/042;E21B17/08;E21B23/04;E21B23/08;E21B43/10;F16J15/10;F16L13/14;F16L13/16;F16L15/04;(IPC1-7):F16J15/16;E21B33/00;E21B33/128;E21B23/00;F16J15/48;E21B33/12;E21B33/10;E21B42/00;F16L17/00 |
主分类号 |
E21B17/042 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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