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ANNULAR SAFETY ASSEMBLY FOR OIL WELLS, PARTICULARLY WITH DOUBLE PRODUCTION AREA
ANNULAR SAFETY ASSEMBLY FOR OIL WELLS, PARTICULARLY WITH DOUBLE PRODUCTION AREA
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机译:油井的环形安全组件,特别是生产面积加倍的场合
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摘要
An annular safety assembly comprising, between an upper cylindrical body and a lower cylindrical body, through which connecting tubes of production tubes pass, a packer and a low-bulk anchorage system consisting of a radial spacing ring, a resilient anchorage ring split along a generatrix and provided with peripheral anchorage teeth and a thrust ring which can be moved upwardly by thruster-plungers extending from the lower cylindrical body to apply the anchorage ring to the casing, and a safety valve arranged separately from the connecting tubes, which extend between the said cylindrical bodies, and below the lower cylindrical body.
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