초록 ▼

On a wellhead, a well component, such as a casing head, has a bowl with a first shoulder and a groove defined therein. A hanger for supporting casing positions in the bowl, and a latch assembly on the hanger latches the hanger in the groove. The latch can have a traveling ring and a latch ring suppo

On a wellhead, a well component, such as a casing head, has a bowl with a first shoulder and a groove defined therein. A hanger for supporting casing positions in the bowl, and a latch assembly on the hanger latches the hanger in the groove. The latch can have a traveling ring and a latch ring supported on the hanger's exterior surface. The traveling ring engages the first shoulder in the bowl and pushes the latch ring against a portion of the hanger, such as a second shoulder. The latch ring has a joint at a split in the latch ring, and the joint holds the latch ring in a compressed state about the exterior surface. When the latch ring moves with the engagement of the traveling ring against the hanger portion, the joint is disjointed, and the latch ring expands outward into the groove to latch the hanger in the bowl.

대표청구항 ▼

1. A hanger for landing in a first direction on a first shoulder in a bowl and latching in a second direction opposite the first direction in an internal groove of the bowl, the first shoulder facing in the second direction, the hanger comprising: a hanger body for positioning in the bowl, the hange

1. A hanger for landing in a first direction on a first shoulder in a bowl and latching in a second direction opposite the first direction in an internal groove of the bowl, the first shoulder facing in the second direction, the hanger comprising: a hanger body for positioning in the bowl, the hanger body having an exterior surface with a second shoulder facing the first direction for supporting the hanger body, the exterior surface of the hanger body defining a protrusion protruding therefrom; anda latch supported on the exterior surface and having a split connected by a joint, the joint holding the latch in a compressed state about the exterior surface and disjointing in response to engagement of the latch in the bowl and to engagement of the protrusion with the joint, the latch expanding outward into the internal groove in response to the disjointing,the latch having third and fourth shoulders supporting the hanger body in the first direction in the bowl respectively between the first and second shoulders,the latch expanded into the internal groove having a fifth shoulder facing in the second direction,the hanger body having a sixth shoulder on the exterior surface facing in the second direction,the latch having a seventh shoulder facing in the first direction and engageable with the sixth shoulder of the hanger body with movement of the hanger body in the second direction,the fifth shoulder of the latch expanded into the internal grove and moved in the second direction constraining the movement of the hanger body in the second direction from the bowl against the internal groove. 2. The hanger of claim 1, wherein the joint comprises a weld formed at the split in the latch. 3. The hanger of claim 1, wherein the joint comprises a fixture disposed at the split in the latch. 4. The hanger of claim 1, further comprising one or more temporary connections holding the latch supported temporarily on the exterior surface. 5. The hanger of claim 1, wherein the second shoulder on the exterior surface of the hanger body expands the latch radially outward, when the latch is moved in the second direction thereagainst, and disjoints the joint. 6. The hanger of claim 5, wherein the exterior surface of the hanger body defines the protrusion protruding from the second shoulder and engageable with the joint. 7. The hanger of claim 1, wherein the second shoulder of the hanger body has separate sections engageable with corresponding separate sections on the fourth shoulder on the latch. 8. A hanger for landing in a first direction on a first shoulder in a bowl of a well component having an internal groove in the bowl, the first shoulder facing in a second direction opposite the first direction, the hanger comprising: a hanger body for positioning in the first direction in the bowl, the hanger body having an exterior surface and having a second shoulder extending from the exterior surface in the first direction, the exterior surface of the hanger body defining a protrusion protruding therefrom;a traveling ring supported on the exterior surface and having a third shoulder engagable with the first shoulder in the bowl; anda latch ring supported on the exterior surface and having a joint at a split in the latch ring, the joint holding the latch ring in a compressed state about the exterior surface, the latch ring movable in the second direction with the engagement of the third shoulder of the traveling ring against the first shoulder in the bowl, the joint disjointing with engagement of the latch ring against the second shoulder of the hanger body and with engagement of the protrusion with the joint, the latch ring expanding outward into the internal groove in response to the disjointing,the third shoulder of the traveling ring and a fourth shoulder of the latch ring supporting the hanger body in the first direction in the bowl respectively between the first and second shoulders,the hanger body having a sixth shoulder on the exterior surface facing in the second direction,the traveling ring having a seventh shoulder facing in the first direction and engageable with the sixth shoulder of the hanger body with movement of the hanger body in the second direction,the latch ring expanded into the internal groove having a fifth shoulder facing in the second direction, the fifth shoulder constraining the movement of the hanger body in the second direction from the bowl against the internal groove. 9. The hanger of claim 8, wherein the joint comprises a weld formed at the split in the latch ring. 10. The hanger of claim 8, wherein the joint comprises a fixture disposed at the split in the latch ring. 11. The hanger of claim 8, further comprising one or more temporary connections holding the traveling ring supported temporarily on the exterior surface. 12. The hanger of claim 8, wherein the second shoulder on the exterior surface of the hanger body expands the latch ring radially outward, when the latch ring is moved in the second direction thereagainst, and disjoints the joint. 13. The hanger of claim 12, wherein the exterior surface of the hanger body defines the protrusion protruding from the second shoulder and engageable with the joint. 14. The hanger of claim 8, wherein the latch ring has a first end facing in the first direction; and wherein the traveling ring has a second end facing in the second direction, the first and second ends engageable with one another. 15. A wellhead, comprising: a well component having a bowl with a first shoulder and an internal groove defined therein, the first shoulder facing in a second direction opposite a first direction;a hanger for positioning in the first direction in the bowl, the hanger having an exterior surface and having a second shoulder extending from the exterior surface in the first direction, the exterior surface of the hanger body defining a protrusion protruding therefrom;a traveling ring supported on the exterior surface and having a third shoulder engagable with the first shoulder in the bowl; anda latch ring supported on the exterior surface and having a joint at a split in the latch ring, the joint holding the latch ring in a compressed state about the exterior surface, the latch ring movable in the second direction with the engagement of the third shoulder of the traveling ring against the first shoulder in the bowl, the joint disjointing with engagement of the latch ring against the second shoulder of the hanger and with engagement of the protrusion with the joint, the latch ring expanding outward into the internal groove in response to the disjointing,the third shoulder of the traveling ring and a fourth shoulder of the latch ring supporting the hanger body in the first direction in the bowl respectively between the first and second shoulders,the hanger body having a sixth shoulder on the exterior surface facing in the second direction,the traveling ring having a seventh shoulder facing in the first direction and engageable with the sixth shoulder of the hanger body moved in the second direction,the latch ring expanded into the internal groove having a fifth shoulder facing in the second direction and constraining movement of the hanger body in the second direction from the bowl against the internal groove. 16. A method of landing a hanger in a first direction in a bowl of a well component having an internal groove and a first shoulder, the first shoulder facing in a second direction opposite the first direction, the method comprising: jointing a split of a latch in a compressed state on an exterior surface of the hanger, the latch having a third shoulder facing in the first direction and having a fourth shoulder facing in the second direction;positioning the hanger in the first direction in the bowl, the hanger having a second shoulder facing in the first direction, the exterior surface of the hanger body defining a protrusion protruding therefrom;disjointing the split of the latch in response to engagement of the third shoulder of the latch against the first shoulder of the bowl, engagement of the fourth shoulder of the latch with the second shoulder of the hanger, and engagement of the protrusion with the joint of the split; andlatching the hanger in the well component by expanding the latch outward into the internal groove in response to the disjointing, supporting the hanger in the first direction in the bowl with the third and fourth shoulders of the latch respectively between the first shoulder of the bowl and the second shoulder of the hanger, and constraining movement of the hanger in the second direction from the bowl with engagement of a sixth shoulder of the hanger with a seventh shoulder of the latch and with engagement of a fifth shoulder of the latch with the internal groove of the bowl. 17. The method of claim 16, wherein disjointing the split comprises moving the latch in the second direction on the exterior surface in response to the engagement. 18. The method of claim 17, wherein moving the latch in the second direction on the exterior surface in response to the engagement comprises: engaging the third shoulder of a traveling ring of the latch on the hanger against the first shoulder of the bowl;moving the traveling ring in the second direction with the engagement; andmoving a split ring of the latch in the second direction with the traveling ring. 19. The method of claim 18, wherein disjointing the latch in response to the engagement comprises breaking the jointing of the split ring, moved in the second direction on the exterior surface, with the protrusion of the hanger. 20. The method of claim 19, wherein breaking the jointing of the split ring, moved in the second direction on the exterior surface, with the protrusion of the hanger comprises breaking the jointing of the split ring by wedging the split ring against the second shoulder on the hanger. 21. The method of claim 19, wherein breaking the jointing of the split ring, moved on the exterior surface, with the protrusion of the hanger comprises breaking the jointing of the split ring by wedging the split ring against the protrusion on the hanger.