| 摘要 |
<p>The invention relates to a tubular member (M) having at least one drainage section comprising at least one inlet or aperture (2) and at least one self-adjustable flow control device (10) to control the flow of fluid into the drainage section from a well formed in a subterranean reservoir, wherein each of the flow control devices (10) are located in an annular space surrounding a base pipe (1 ) between said inlet or aperture (2) and at least one outlet (6) is provide for fluid flowing into the drainage section, said annular space forming a flow path through the flow control device (10) passing by a valve body (9) arranged to reduce or increase the flow area of the flow control device (10) in response to the pressure difference across the flow control device (10) and/or changes in density of the fluid. The flow control device (10) comprises a valve seat (4, 4a, 4b, 16) cooperating with the valve body (5, 5a, 5b; 15), which valve body comprises an annular resilient valve member arranged to be deformed at least in a radial direction, in order to reduce or increase the flow area through the flow control device (10).</p> |
