Riser gas handling system

Patent metadata

Field	Value
Publication number	US-9765587-B2
Application number	US-201615134207-A
Country	US
Kind code	B2
Filing date	Apr 20, 2016
Priority date	Mar 15, 2013
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

An integrated assembly for a mineral extraction system includes an annular blow out preventer (BOP) portion that includes a BOP body coupled to a first portion of an one-piece body, where the annular BOP portion is configured to seal an outer drill string of the mineral extraction system, a diverter portion formed at least partially by a second portion of the one-piece body, where the diverter portion comprises one or more openings, and a rotating control unit (RCU) assembly portion comprising a third portion of the one-piece body coupled to a rotation enabled portion, where the RCU assembly portion is configured to divert drilling fluid through the one or more openings of the diverter portion.

First claim

The invention claimed is:

1. An integrated assembly for a mineral extraction system, comprising:
an annular blow out preventer (BOP) portion comprising a BOP body coupled to a first portion of a common body, wherein the annular BOP portion is configured to seal an outer drill string of the mineral extraction system, and wherein the first portion of the common body axially overlaps with the annular BOP portion;
a diverter portion formed at least partially by a second portion of the common body, wherein the diverter portion comprises one or more openings, and wherein the second portion of the common body axially overlaps with the diverter portion; and
a rotating control unit (RCU) assembly portion comprising a third portion of the common body coupled to a rotation enabled portion, wherein the RCU assembly portion is configured to divert drilling fluid through the one or more openings of the diverter portion, wherein the third portion of the common body axially overlaps with the RCU assembly portion, and wherein the common body is shared between the first portion of the common body, the second portion of the common body, and the third portion of the common body.

2. The integrated assembly of claim 1 , wherein the first portion of the common body, the second portion of the common body, and the third portion of the common body are integrated with one another to form the common body forged as one piece.

3. The integrated assembly of claim 1 , wherein the first portion of the common body comprises a tapered surface configured to facilitate sealing the outer drill string of the mineral extraction system.

4. The integrated assembly of claim 3 , wherein the tapered surface is configured to apply a force to a packing assembly of the annular BOP portion when a piston of the annular BOP portion moves in an axial direction relative to an axis defining an opening extending through the integrated assembly, and wherein the force enables the packing assembly to direct a donut of the annular BOP portion radially toward an inner drill string of the mineral extraction system.

5. The integrated assembly of claim 4 , wherein the donut is configured to surround the inner drill string to seal the outer drill string, such that drilling fluid in the outer drill string is blocked from flowing toward a platform of the mineral extraction system.

6. The integrated assembly of claim 1 , wherein the RCU assembly portion is configured to divert the drilling fluid through the one or more openings of the diverter portion when a bearing assembly is installed in the rotation enabled portion of the RCU assembly portion.

7. The integrated assembly of claim 6 , wherein the bearing assembly is configured to seal the outer drill string and direct the drilling fluid through the one or more openings of the diverter portion.

8. The integrated assembly of claim 1 , wherein the diverter portion comprises a plurality of openings, and wherein each opening of the plurality of openings comprises a different diameter.

9. The integrated assembly of claim 1 , wherein the third portion of the common body comprises an outer housing of the RCU assembly portion configured to receive at least a portion of the rotation enabled portion of the RCU assembly portion.

10. The integrated assembly of claim 9 , wherein the outer housing of the RCU assembly portion comprises a lip configured to couple to a corresponding lip of the rotation enabled portion with a clamp.

11. The system of claim 1 , wherein the RCU assembly portion is disposed vertically above the annular BOP portion.

12. A drilling rig, comprising:
a platform;
a drill string configured to extend from the platform into a well;
an integrated assembly disposed along the drill string, wherein the integrated assembly comprises;
an annular blow out preventer (BOP) portion comprising a BOP body coupled to a first portion of a common body, wherein the annular BOP portion is configured to seal the drill string when a pressure in the well exceeds a threshold, and wherein the first portion of the common body axially overlaps with the annular BOP portion;
a diverter portion formed at least partially by a second portion of the common body, wherein the diverter portion comprises one or more openings, and wherein the second portion of the common body axially overlaps with the diverter portion; and
a rotating control unit (RCU) assembly portion comprising a third portion of the common body coupled to a rotation enabled portion, wherein the RCU assembly portion is configured to divert drilling fluid flowing in the drill string toward the platform through the one or more openings of the diverter portion, wherein the third portion of the common body axially overlaps with the RCU assembly portion, and wherein the common body is shared between the first portion of the common body, the second portion of the common body, and the third portion of the common body.

13. The drilling rig of claim 12 , wherein the first portion of the common body comprises a tapered surface configured to facilitate sealing the drill string.

14. The drilling rig of claim 13 , wherein the tapered surface is configured to apply a force to a packing unit of the annular BOP portion when a piston of the annular BOP portion moves in an axial direction relative to an axis defining an opening extending through the integrated assembly, and wherein the force directs the packing unit toward an inner drill string extending from the platform into the well.

15. The drilling rig of claim 14 , wherein the packing unit is configured to surround the inner drill string to seal the drill string, such that drilling fluid in the drill string is blocked from flowing toward the platform.

16. The drilling rig of claim 12 , wherein the first portion of the common body, the second portion of the common body, and the third portion of the common body are integrated with one another to form the common body forged as one piece.

17. A system, comprising:
an annular blow out preventer (BOP) portion comprising a BOP body coupled to a first portion of a common body, wherein the annular BOP portion is configured to seal an outer drill string of the mineral extraction system, wherein the first portion of the common body comprises a tapered surface configured to facilitate sealing the outer drill string, and wherein the first portion of the common body axially overlaps with the annular BOP portion;
a diverter portion formed at least partially by a second portion of the common body, wherein the diverter portion comprises one or more openings, and wherein the second portion of the common body axially overlaps with the diverter portion; and
a rotating control unit (RCU) assembly portion comprising a third portion of the common body coupled to a rotation enabled portion, wherein the RCU assembly portion comprises a removable bearing assembly configured to divert drilling fluid through the one or more openings of the diverter portion, wherein the third portion of the common body axially overlaps with the RCU assembly portion, and wherein the common body is shared between the first portion of the common body, the second portion of the common body, and the third portion of the common body.

18. The system of claim 17 , wherein the first portion of the common body, the second portion of the common body, and the third portion of the common body are integrated with one another to form the common body forged as one piece.

19. The system of claim 17 , wherein a flanged connection is absent at least between the annular BOP portion and the

Assignees

• Cameron Int Corp

Inventors

• Boulanger Bruce A
• Smith Terry Jason
• Gilmore David L
• Arefi Babak Bob

Classifications

• E21B33/035 Primary

  specially adapted for underwater installations (E21B33/043, E21B33/064, E21B33/076 take precedence) · CPC title

• E21B21/08

  Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure (valve arrangements therefor E21B21/10) · CPC title

• E21B33/038

  Connectors used on well heads, e.g. for connecting blow-out preventer and riser · CPC title

• E21B33/085

  Rotatable packing means, e.g. rotating blow-out preventers · CPC title

• E21B33/06 Primary

  Blow-out preventers {, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers (rotating blow-out preventers E21B33/085)} · CPC title