Surface controlled subsurface lateral branch safety valve
First Claim
1. 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.
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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.
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Citations
121 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of completing a well having an intersection between first and second wellbores, the method comprising the steps of:
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interconnecting a mandrel as part of a casing string, a first longitudinal passage of the casing string extending through the mandrel;
positioning the mandrel in the well at the desired intersection of the first and second wellbores;
drilling the second wellbore by deflecting a cutting tool from the first passage and through a second passage formed in the mandrel; and
flowing fluid between the first and second wellbores through the mandrel, without flowing fluid directly between the first and second passages. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. An apparatus for use in completing a well having intersecting first and second wellbores, the apparatus comprising:
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an elongated mandrel configured for interconnection in a casing string in the well, the mandrel having intersecting first and second passages formed therethrough, the first passage extending longitudinally through the mandrel, and the second passage extending laterally relative to the first passage; and
a flow control device selectively permitting and preventing fluid communication with the second passage. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121)
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Specification