| 摘要 |
A downhole diverter or by-pass valve (402) in a downhole production string comprising: a body (405), a shuttle (452) slidably inserted in the body, and a bobbin (411) for mating with the shuttle; the body, shuttle, bobbin, and a spring (461) coaxially arranged to provide a pump rotor (409) passageway (488); the passageway for receiving a rotatable rod therethrough and the bobbin for slidably contacting the rod; wherein during normal operation of the production string a pump (256) driven by the rod pumps fluid through the passageway and during a pump rotor removal operation a rotor of the pump is passed through the valve via the passageway. 469- 465 427--~404 -- 459 471 4-461 408 ------- 456 4 7 2 -- - - 0 LITG457-) 498 47 FIG.4A -4 d72 254- -256 445 |
