| 摘要 |
A wellbore system formed in an earth formation including at least one hydrocarbon fluid reservoir, the wellbore system comprising a main wellbore and a plurality of branch wellbores, each branch wellbore extending from the main wellbore into the earth formation and providing fluid communication between said at least one hydrocarbon fluid reservoir and the main wellbore, each branch wellbore being provided with a production valve comprising anchoring means for fixedly anchoring the production valve in the branch wellbore and control means for controlling the flow rate of a stream of hydrocarbon fluid flowing from said at least one reservoir via the branch wellbore into the main wellbore.
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