TUBING HANGER OF WELLHEAD EQUIPMENT WITH METAL- TO-METAL SEAL
oil and gas producing industry, particularly, wellhead equipment. SUBSTANCE: tubing hanger is installed in tubing head connected with adapting flange and consists of hanger body and seals. Lower seal of casing string-borehole annulus consists of locking and supporting rings and metal collar installe...
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Sprache: | eng |
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Zusammenfassung: | oil and gas producing industry, particularly, wellhead equipment. SUBSTANCE: tubing hanger is installed in tubing head connected with adapting flange and consists of hanger body and seals. Lower seal of casing string-borehole annulus consists of locking and supporting rings and metal collar installed on step of supporting ring and having internal conical surface and external cylindrical surface whose upper part has, at least, two projection with tore working surface. EFFECT: reduced cost of starting and adjustment operations due to multiple use of seal of casing-borehole annulus. 2 cl, 3 dwg |
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