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, and wherein direct fluid communication between the first and second passages is prevented while the flow control device permits flow between the first and second passages via a third passage extending between the first and second passages.
1 Assignment
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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
88 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, and wherein direct fluid communication between the first and second passages is prevented while the flow control device permits flow between the first and second passages via a third passage extending between the first and second passages. - View Dependent Claims (2, 3, 4)
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5. A completion system for a well having an intersection between first and second wellbores, the system comprising:
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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, and a plug preventing direct fluid communication between the first and second passages, and wherein the plug is installed in the second passage, and the flow control device remains in direct fluid communication with the second passage while the plug is installed.
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6. A completion system for a well having an intersection between first and second wellbores, the system comprising:
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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, the apparatus being a portion of an intelligent well completion, and wherein the flow control device is remotely controlled in the intelligent well completion.
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7. A completion system for a well having an intersection between first and second wellbores, the system comprising:
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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, the apparatus being a portion of an intelligent well completion, and wherein the intelligent well completion includes at least one sensor attached to the apparatus, the sensor sensing at least one fluid property and providing an indication of the fluid property, the fluid property indication being transmitted to a remote location.
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8. 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, and a wear bushing installed in the second passage. - View Dependent Claims (9, 10, 11, 12)
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13. 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, and a sensor which senses fluid properties external to the apparatus.
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14. A completion system for a well having an intersection between first and second wellbores, the system comprising:
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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, and wherein the flow control device is automatically operated in response to indications of fluid properties sensed by at least one sensor of the apparatus. - View Dependent Claims (15)
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16. 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 (17, 18, 19, 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)
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68. 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, and the flow control device selectively permitting and preventing flow between the first and second passages; and
a plug blocking flow directly between the first and second passages, the flow control device selectively permitting and preventing flow between the first and second passages via a third passage extending between the first and second passages. - View Dependent Claims (69, 70, 71, 72, 73, 74)
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75. 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;
a flow control device selectively permitting and preventing fluid communication with the second passage; and
a tool installed in the mandrel and operative to retrieve a portion of the flow control device from within the mandrel. - View Dependent Claims (76, 77, 78)
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79. 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;
a flow control device selectively permitting and preventing fluid communication with the second passage; and
first and second sensors sensing fluid properties in the first and second passages, respectively. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88)
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Specification