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.

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.

Abstract: An anchor for a branch wellbore liner. In a described embodiment, a system is used to anchor between an upper portion of a window formed through a sidewall of a first tubular string and an upper end of a second tubular string extending outwardly from the window. The system includes a first anchoring device at the upper portion of the window, and a second anchoring device at the upper end of the second tubular string. The first and second anchoring devices are operative to secure the upper end of the second tubular string to the upper portion of the window.

Abstract: A tubing/casing connection for U-tube wells. In a described embodiment, a tubular string connection system includes a first tubular string having an expanded entry guide; and a second tubular string having an end guided into the first tubular string by the entry guide.

Abstract: A multilateral completion system utilizing an alternate passage. In a described embodiment, a wellbore junction includes a first passage extending from a first opposite end to a second opposite end of the wellbore junction. A window is formed through a sidewall of the wellbore junction and provides fluid communication between the first passage and an exterior of the wellbore junction. A second passage is in communication with the first passage on a first lo side of the window, and in communication with the first passage on a second side of the window.