| 摘要 |
<p>A downhole flow control device is provided for controlling fluid flow of production or injection fluids, the device may include: a body member (12) having a first bore extending from a first end of the body member and through an extension member (17) disposed within the body member, a second bore extending from a second end of the body member and into an annular space (21) disposed about the extension member, a first valve seat (22) disposed within the first bore, and at least one flow port (24) in the extension member establishing fluid communication between the annular space and the first bore; and a first sleeve member (26) remotely shiftable within the first bore, and having a second valve seat (28) adapted for cooperable sealing engagement with the first valve seat to regulate fluid flow through the at least one flow port.</p> |
