Erosion-prevention drilling and completion integrated wellhead device and mounting method
A wellhead device, drilling and completion technology, applied in wellbore/well components, earthwork drilling, sealing/packing, etc. The effect of avoiding erosion damage and improving erosion resistance
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[0029] like figure 1 As shown, the integrated wellhead device for anti-erosion drilling and completion includes a multi-functional spool 1, a hard alloy sleeve 2, and a double flange nipple 3. The bypass outlet end of the multi-function cross 1 is tightly connected with the inlet end of the double-flange nipple 3 through the stud bolt 5 and the nut 6; the outlet end of the double-flange nipple 3 is connected with the downstream plate valve 7; the multi-function A cemented carbide sleeve 2 is embedded in the bypass outlet section of the cross 1 and the inlet section of the double flange nipple 3; the bypass outlet end of the multifunctional cross 1 and the flange surface of the double flange nipple 3 have In the annular sealing groove, an O-ring metal ring 4 is used to realize the sealing between the double flange nipple 3 and the multi-functional cross 1, as well as the sealing between the downstream flat valve.
[0030] Two positioning reference lines a and b are marked on t...
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