Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A monobore wellbore (68) and method for completing the same are disclosed. The monobore wellbore (68) comprises a first casing (74) having an inner diameter (76) and a lap region (80). A second casing (90) is positioned within the wellbore (70) by passing through the first casing (74) such that an uphole end of the second casing (90) is positioned within the lap region (80) of the first casing (74). After downhole expansion, the second casing (90) has an inner diameter (114) that is substantially the same as the inner diameter (76) of the first casing. The uphole end of the second wellbore is coupled to the lap region (80) of the first casing (74) to create a mechanical connection and a hydraulic seal, thereby creating the monobore wellbore (68).

Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A method of installing an internal latch profile in an existing tubular string does not require the use of a packer. In a described embodiment, a method of latch installation includes the step of deforming an interior surface of the tubular string after the tubular string is positioned in a well. In another described embodiment, a method of latch installation includes the step of cutting into the interior surface of the tubular string.

Abstract: A method of installing an internal latch profile in an existing tubular string does not require the use of a packer. In a described embodiment, a method of latch installation includes the step of deforming an interior surface of the tubular string after the tubular string is positioned in a well. In another described embodiment, a method of latch installation includes the step of cutting into the interior surface of the tubular string.

Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A method of installing an internal latch profile in an existing tubular string does not require the use of a packer. In a described embodiment, a method of latch installation includes the step of deforming an interior surface of the tubular string after the tubular string is positioned in a well. In another described embodiment, a method of latch installation includes the step of cutting into the interior surface of the tubular string.

Abstract: A monobore wellbore (68) and method for completing the same are disclosed. The monobore wellbore (68) comprises a first casing (74) having an inner diameter (76) and a lap region (80). A second casing (90) is positioned within the wellbore (70) by passing through the first casing (74) such that an uphole end of the second casing (90) is positioned within the lap region (80) of the first casing (74). After downhole expansion, the second casing (90) has an inner diameter (114) that is substantially the same as the inner diameter (76) of the first casing. The uphole end of the second wellbore is coupled to the lap region (80) of the first casing (74) to create a mechanical connection and a hydraulic seal, thereby creating the monobore wellbore (68).

Abstract: A method of forming a downhole connection between tubular strings includes the step of crimping the tubular strings together. The tubular strings may be positioned in the same wellbore, or the tubular strings may be positioned in different intersecting wellbores during the crimping step. One of the tubular strings may be expanded outwardly within the other tubular string prior to the crimping step.

Abstract: A method of installing an internal latch profile in an existing tubular string does not require the use of a packer. In a described embodiment, a method of latch installation includes the step of deforming an interior surface of the tubular string after the tubular string is positioned in a well. In another described embodiment, a method of latch installation includes the step of cutting into the interior surface of the tubular string.

Abstract: A method of installing an internal latch profile in an existing tubular string does not require the use of a packer. In a described embodiment, a method of latch installation includes the step of deforming an interior surface of the tubular string after the tubular string is positioned in a well. In another described embodiment, a method of latch installation includes the step of cutting into the interior surface of the tubular string.

Abstract: A method of completing a subterranean well utilizes an isolation bypass transition joint at a wellbore intersection. In a described embodiment, the isolation bypass transition joint has multiple plug devices in a sidewall thereof. The transition joint extends laterally from one wellbore into another. After a cementing operation, the plug devices are opened to permit flow through the transition joint sidewall.

Abstract: A method of installing an internal latch profile in an existing tubular string does not require the use of a packer. In a described embodiment, a method of latch installation includes the step of deforming an interior surface of the tubular string after the tubular string is positioned in a well. In another described embodiment, a method of latch installation includes the step of cutting into the interior surface of the tubular string.

Abstract: A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

Abstract: A method of completing a subterranean well utilizes an isolation bypass transition joint at a wellbore intersection. In a described embodiment, the isolation bypass transition joint has multiple plug devices in a sidewall thereof. The transition joint extends laterally from one wellbore into another. After a cementing operation, the plug devices are opened to permit flow through the transition joint sidewall.

Abstract: A method of forming a downhole connection between tubular strings includes the step of crimping the tubular strings together. The tubular strings may be positioned in the same wellbore, or the tubular strings may be positioned in different intersecting wellbores during the crimping step. One of the tubular strings may be expanded outwardly within the other tubular string prior to the crimping step.