| 摘要 |
A wellhead system for producing hydrocarbons from a subterranean formation that includes concentric tubulars that form an annulus 62. The annulus 62 is vented by flowing fluid from the annulus 62 through a bleed line 74 having a valve that is selectively opened and closed. Upstream of the bleed line valve, the bleed line is routed (Q) adjacent a production flow line 58. The temperature of the fluid in the production flow line 58 is greater than annulus temperature and warms the bleed line 74. Hydrate formation in the bleed line 74 is thereby inhibited by the thermal energy it receives from the production flow line 58.
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