发明名称 |
DEVICE FOR PIPE STRING PRESSURE-TESTING |
摘要 |
FIELD: oil production, particularly valve arrangements for boreholes or wells. ^ SUBSTANCE: device comprises cylindrical body 2 with sealing member 3 and seat 4. The seat 4 is made as upper restricted end 5 of central channel 6 made in pressure-testing coupling 7 installed in pipe string downstream of pipe string interval to be pressure-tested. Sealing member 3 is made as spherical lower body end having fishing head 8 with centrator 9 arranged from body end top. Spherical end of cylindrical body 2 may cooperate with seat in air-tight manner. ^ EFFECT: decreased device manufacturing costs and increased device production simplicity. ^ 1 dwg |
申请公布号 |
RU2312204(C1) |
申请公布日期 |
2007.12.10 |
申请号 |
RU20060119555 |
申请日期 |
2006.06.05 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "TATNEFT'" IM. V.D. SHASHINA |
发明人 |
GARIFOV KAMIL' MANSUROVICH;MAKHMUTOV IL'GIZAR KHASIMOVICH;STRAKHOV DMITRIJ VITAL'EVICH;ZIJATDINOV RADIK ZJAUZJATOVICH;OSNOS VLADIMIR BORISOVICH |
分类号 |
E21B34/06;E21B17/00 |
主分类号 |
E21B34/06 |
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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