发明名称 |
INTERVAL PACKER DEVICE, HYDRO-MECHANICAL PACKER AND REPRESSION-DEPRESSION ACTION HYDRAULIC PACKER (ITS VARIANTS) |
摘要 |
FIELD: packing devices for isolating shaft of wells during various technological operations. ^ SUBSTANCE: interval packer device contains longitudinally positioned upper and lower packers with sealing collar packing. Upper packer is made hydro-mechanical, lower packer - repression-depression action hydraulic packer. Positioned between packers is valve unit of two-side action, hydraulically connected to lower packer through in-pipe and annular spaces. It consists of hollow body with at least one radial channel and differential bushing with radials apertures positioned on the body and spring-loaded on both ends by means of reciprocal force springs. All packers are made so that each one of them may be used independently or in composition of other assemblies. ^ EFFECT: increased reliability of operation and expanded functional capabilities of devices. ^ 4 cl, 13 dwg
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申请公布号 |
RU2292442(C1) |
申请公布日期 |
2007.01.27 |
申请号 |
RU20050120046 |
申请日期 |
2005.06.29 |
申请人 |
SOKOLOVSKIJ EHDUARD VLADIMIROVICH;JAKOVLEV SERGEJ SERGEEVICH;JAKOVLEV ALEKSANDR SERGEEVICH |
发明人 |
SOKOLOVSKIJ EHDUARD VLADIMIROVICH;JAKOVLEV SERGEJ SERGEEVICH;JAKOVLEV ALEKSANDR SERGEEVICH |
分类号 |
E21B33/124 |
主分类号 |
E21B33/124 |
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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