SURFACE CONTROLLED SUBSURFACE LATERAL BRANCH SAFETY VALVE
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Accused Products
Abstract
A surface controlled subsurface lateral branch safety valve provides flow control for each branch wellbore in a multilateral well. In a described embodiment, a completion system for a well having an intersection between parent and branch wellbores includes an apparatus having multiple passages formed therethrough. One passage provides fluid communication between opposite ends of the apparatus in the parent wellbore, and another passage provides guidance for drilling the branch wellbore. The apparatus further includes a flow control device, such as a surface controlled subsurface safety valve, which selectively controls fluid communication with the branch wellbore.
50 Citations
125 Claims
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1-2. -2. (canceled)
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3. A completion system for a well having an intersection between first and second wellbores, the system comprising:
an apparatus having first and second passages formed therethrough, the first passage providing fluid communication between opposite ends of the apparatus in the first wellbore, and the second passage providing guidance for drilling the second wellbore extending laterally from the first wellbore, the apparatus further including a flow control device selectively controlling fluid communication with the second passage, direct fluid communication between the first and second passages being prevented while the flow control device permits flow between the second passage and a third passage extending to the earth'"'"'s surface. - View Dependent Claims (122, 123, 124, 125)
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4-121. -121. (canceled)
Specification