| 摘要 |
A snorkel device 10 for use in a well comprises a packer 46 to isolate a first, high-pressure production zone 34 in the well from a second, low-pressure production zone 38 in the well, and a flow control device 32 located in the first, high-pressure production zone 34 having a proportional controller 42 with a snorkel tube 24 which communicates pressure from low pressure production zone 38 via controller 42 in to the flow control device 32. |
