Multilateral completion system utilizing an alternate passage
First Claim
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1. A wellbore junction for use in a subterranean well, the wellbore junction comprising:
- a first passage extending from a first opposite end to a second opposite end of the wellbore junction;
a window formed through a sidewall of the wellbore junction; and
a second passage in communication with the first passage on a first side of the window, and in communication with the first passage on a second side of the window,wherein the wellbore junction including the first and second passages is interconnected in a casing string as the casing string is run-in and installed in the well, the first passage thereby forming a portion of a bore of the casing string.
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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 side of the window, and in communication with the first passage on a second side of the window.
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Citations
102 Claims
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1. A wellbore junction for use in a subterranean well, the wellbore junction comprising:
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a first passage extending from a first opposite end to a second opposite end of the wellbore junction; a window formed through a sidewall of the wellbore junction; and a second passage in communication with the first passage on a first side of the window, and in communication with the first passage on a second side of the window, wherein the wellbore junction including the first and second passages is interconnected in a casing string as the casing string is run-in and installed in the well, the first passage thereby forming a portion of a bore of the casing string. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A subterranean well system, comprising:
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a wellbore junction positioned in a first wellbore at an intersection between the first wellbore and a second wellbore, the wellbore junction having first and second passages formed therein, the first passage extending through the wellbore junction; and a liner string extending outwardly through a window formed through a sidewall of the wellbore junction and having an end secured in the first passage, the liner string extending into the second wellbore, wherein the second passage provides fluid communication between the first passage on a first side of the liner string end and the first passage on a second side of the liner string end, and wherein the wellbore junction including the first and second passages is interconnected in a casing string as the casing string is run-in and installed in the first wellbore, so that the first passage forms a portion of a bore of the casing string. - View Dependent Claims (12, 13, 14, 15, 16, 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)
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54. A method of completing a well having at least first and second intersecting wellbores, the method comprising the steps of:
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installing a casing string in the first wellbore, including interconnecting a first wellbore junction in the casing string; securing a first deflector assembly in a first passage of the first wellbore junction; and flowing fluid through a second passage of the first wellbore junction between the casing string on a first side of the first wellbore junction and the casing string on a second side of the first wellbore junction, without retrieving the first deflector assembly from the first passage, and wherein in the installing step the first wellbore junction including the first and second passages is interconnected in the casing string as the casing string is being run-in and installed in the first wellbore. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
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68. A method of completing a well having at least first and second intersecting wellbores, the method comprising the steps of:
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installing a casing string in the first wellbore, including interconnecting a first wellbore junction in the casing string; securing a first deflector assembly in a first passage of the first wellbore junction; deflecting a first liner string off of the first deflector assembly and into the second wellbore; securing an end of the first liner string in the first passage; flowing fluid through a second passage of the first wellbore junction between the casing string on a first side of the first wellbore junction and the casing string on a second side of the first wellbore junction, without retrieving the first deflector assembly from the first passage; conveying a tubular string through the casing string; engaging the tubular string with the end of the first liner string, thereby providing fluid communication between the first liner string and the tubular string; providing fluid communication between the tubular string and the second passage of the first wellbore junction; and conveying a well tool through the tubular string and into the second passage of the wellbore junction. - View Dependent Claims (69, 70, 71, 72, 73)
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88. Apparatus f or use in a subterranean wellbore, the apparatus comprising:
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a portion of a casing string, a longitudinal bore of the casing string extending through the casing string portion, and the casing string portion further including a flow passage at least partially separated from the bore and providing fluid communication between first and second longitudinally separated portions of the bore in the casing string portion, and wherein the casing string portion, including the first and second portions of the bore, is interconnected in the casing string as the casing string is run-in and installed in the wellbore. - View Dependent Claims (89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102)
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Specification