Swivel device for rotating a bowl

Abstract

The swivel device attaches to a bowl or is implemented as a component of the bowl. The swivel device enables adjustment of the bowl to align the outlet with the flowline. A flange of the swivel device includes multiple fastener apertures for securing the flange to the stack. The swivel device secures the bowl to the stack while allowing rotation of the bowl. Rotation of the bowl adjusts the positioning of the outlet to align the outlet with the flowline for connecting the outlet to the flowline.

Claims

1. A device for securing a bowl to a stack for rotating the bowl to align an outlet of the bowl with a flowline of a drilling rig, the device comprising: a shoulder that attaches to the stack; a bottom of the shoulder; a central opening of the shoulder defining a vertical axis wherein the opening, wherein the opening extends vertically through the shoulder, wherein the central opening narrows vertically above the bottom of the shoulder at a narrowing; a neck sized to partially pass through the central opening, wherein the shoulder limits the vertical movement of the neck when the neck is placed within the central opening of the shoulder, wherein the neck rotates in relation to the shoulder, wherein at least a portion of the neck is positioned within the central opening; wherein the shoulder frictionally engages the neck below the narrowing of the central opening to limit rotation of the neck.

2. The device of claim 1 wherein the neck is secured to the bowl as a lowest extension of the bowl.

3. The device of claim 1 wherein the neck is welded to the bowl as a lowest extension of the bowl.

4. The device of claim 1 further comprising: a fastener aperture passing through the shoulder, wherein the fastener aperture is located radially outward from central opening; a fastener inserted vertically downward into the fastener aperture of the shoulder, wherein the fastener tightens the shoulder down against the neck to frictionally engage the neck to limit rotation of the neck upon tightening the fastener to tighten the shoulder down onto the neck.

5. The device of claim 4, wherein the fastener aperture is located radially outward from the neck when the neck is inserted into the central opening.

6. The device of claim 5, wherein no fastener passes through the neck to secure the neck to the stack.

7. The device of claim 6 wherein the bowl is located vertically above the head when the bowl is secured to the head.

8. The device of claim 7 wherein the head is welded to the neck.

9. The device of claim 8 wherein the head is welded by a high pressure full pin weld.

10. A device for securing a bowl to a stack for rotating the bowl to align an outlet of the bowl with a flowline of a drilling rig, the device comprising: a shoulder that attaches to the stack; a central opening of the shoulder defining a vertical axis extending vertically through the shoulder, wherein the central opening passes through a bottom of the shoulder, wherein the central opening narrows vertically above the bottom of the shoulder; a neck sized to partially pass through the central opening, wherein an outer surface of the neck narrows vertically upward, wherein narrowing of the central opening limits vertical movement of the neck through the central opening, wherein the neck rotates in relation to the shoulder; wherein the shoulder frictionally engages the neck to limit rotation of the neck.

11. The device of claim 10 further comprising: a fastener aperture passing through the shoulder, wherein the fastener aperture is located radially outward from central opening in which the neck is positioned, wherein the fastener aperture is located radially outward from the neck when the neck is inserted into the central opening; a fastener inserted vertically downward into the fastener aperture of the shoulder, wherein the fastener tightens the shoulder down against the neck to frictionally engage the neck to limit rotation of the neck upon tightening the fastener to tighten the shoulder down onto the neck.

12. The device of claim 11, wherein no fastener passes through the neck to secure the neck to the stack.

13. The device of claim 10 wherein the neck is secured to the bowl to form a lowest extension of the bowl.

14. The device of claim 13 further comprising: a head extending horizontally above the neck wherein an outer surface of the head extends outward from an outer surface of the neck, the bowl securing to the head.

15. The device of claim 14 further comprising: a seal groove located on a top surface of the head configured to receive a seal for placement of the seal between the head and the bowl.

16. The device of claim 15 wherein the bowl is located vertically above the head when the bowl is secured to the head.

17. The device of claim 16 wherein the head is welded to the neck.

18. A device for securing a bowl to a stack for rotating the bowl to align an outlet of the bowl with a flowline of a drilling rig, the device comprising: a shoulder that attaches to the stack; a central opening of the shoulder defining a vertical axis extending vertically through the shoulder; a base of the shoulder, wherein the central opening extends vertically through the base, wherein the central opening narrows above the base at a narrowing; a neck sized to partially pass through the central opening; a base of the neck positioned within the central opening vertically below the narrowing of the central opening, wherein the neck narrows vertically above the base, wherein the shoulder prevents the base of the neck from passing vertically through the central opening, wherein the neck rotates in relation to the shoulder; wherein the shoulder frictionally engages the base of the neck positioned within the central opening to limit rotation of the neck.

19. The device of claim 18 further comprising: a fastener aperture passing through the shoulder, wherein the fastener aperture is located radially outward from central opening in which the neck is positioned, wherein the fastener aperture is located radially outward from the neck when the neck is inserted into the central opening; a fastener inserted into the fastener aperture of the shoulder, wherein the fastener tightens the shoulder down against the neck to frictionally engage the neck to limit rotation of the neck upon tightening the fastener to tighten the shoulder down onto the neck.

20. The device of claim 19, wherein no fastener passes through the neck to secure the neck to the stack.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following drawings, which form a part of the specification and which are to be construed in conjunction therewith, and in which like reference numerals have been employed throughout wherever possible to indicate like parts in the various views:

(2) FIG. 1 is an environmental view showing one embodiment of the present invention;

(3) FIG. 2 is an exploded view thereof;

(4) FIG. 3 is a partial sectional view thereof;

(5) FIG. 4 is a partial sectional view thereof;

(6) FIG. 5 is a partial front view thereof, the rear view being a mirror image of the front view;

(7) FIG. 6 is a partial sectional view thereof;

(8) FIG. 7 is a sectional view thereof;

(9) FIG. 8 is a perspective view of one embodiment thereof;

(10) FIG. 9 is a side view thereof;

(11) FIG. 10 is a sectional view thereof; and

(12) FIG. 11 is partial sectional view thereof.

DETAILED DESCRIPTION

(13) The swivel device 100 of one embodiment shown in FIG. 1 is implemented as a component of the bowl 101 as shown in FIG. 1 or as a separator device 118 as shown in FIG. 8. The swivel device 100, 118 enables adjustment of the bowl 101 to align the outlet 102 with the flowline.

(14) The swivel device 100, 118 attaches to the stack (not pictured). The swivel device 100 of one embodiment is a component of the bowl. As a component of the bowl 101, the swivel device 100 eliminates the need for multiple attachments. Such an embodiment also reduces the amount of equipment required at the drilling operation.

(15) In another embodiment, the swivel device 118 provides a neck 126 that raises the bowl (not pictured) above the annular as shown in FIG. 8. Both swivel devices 100, 118 secure to the stack. A bottom shoulder, such as a flange, secures to the stack. A neck is secured within the shoulder to allow the neck to rotate. Such rotation enables fine adjustment of the outlet 102 of the bowl 101. The user rotates the neck and the bowl to align the outlet 102 with the flowline.

(16) FIG. 1 shows the embodiment of the swivel device 100 as a component of the bowl. Shoulder 104 secures neck 106 to the stack. Fasteners inserted into fastener apertures 108 secure the shoulder 104 to the stack. The shoulder 104 remains fixed in relation to the stack. Fasteners inserted into fastener apertures 108 limit movement of the shoulder 104.

(17) Neck 106 rotates within shoulder 104. Neck 106 is an extension of the bowl. In one embodiment, the neck 106 is welded to the bowl 101. The shoulder 104 limits vertical movement of the neck 106 and bowl 101 while allowing the rotation of the bowl 101 to position the outlet 102.

(18) FIG. 2 shows the shoulder 104 removed from the neck 106. The shoulder provides an aperture 110 that increases in size towards the lowest most portion of the shoulder 104. In one embodiment, the diameter of opening 102 decreases from the bottom of the shoulder 104 vertically upward along the shoulder 104. Lip 112 contacts neck 106 to prevent the neck 106 from passing through the shoulder 104. Foot 114 extends outward from the outermost surface of the neck 106. The foot 114 increases the diameter of the neck 106. The foot 114 contacts lip 112 to prevent the foot passing through the shoulder 104.

(19) Neck 106 secures to the bowl 101. The neck 106 provides foot 114 for securing the neck within the shoulder 104. The attachment of neck 106 to shoulder 104 via foot 114 allows the neck 106 to rotate within shoulder 104. While shoulder 104 is secured to the stack, the neck 106 can rotate within shoulder 104 for adjusting the outlet in relation to the flowline.

(20) FIG. 3 shows the shoulder 104 with fastener apertures 108. Fastener apertures 108 pass through shoulder 104 for insertion of fasteners to secure the shoulder 104 to the stack. Lip 112 contacts foot 114 to prevent neck 106 from passing through shoulder 104. The diameter of the aperture 110 decreases at the lip 112 to limit vertical movement of the neck 106 upwards past lip 112.

(21) FIG. 4 shows the neck 106 and opening 107. The diameter of opening 107 decreases at foot 114. Foot 114 provides the innermost surface and the outermost surface of neck 106. The outermost surface of foot 114 contacts lip 112 of shoulder 104.

(22) The innermost surface of foot 114 enables placement of a seal at the contact surface between neck 106 and the stack. A seal is placed within seal groove 116. The seal contacts the stack to seal the drilling fluids.

(23) FIGS. 5-7 show the neck 106 inserted into shoulder 104. The fastener installed into the stack through fastener aperture 108 secures the shoulder 104 to the stack. The contact between lip 112 and foot 114 prevents the neck 106 from passing through the shoulder 104. The shoulder 104 remains fixed in relation to the stack due to the fasteners securing the shoulder 104 to the stack. Shoulder 104 secures the neck 106 to allow rotation of neck 106. Lip 112 limits the upward vertical movement of neck 106.

(24) The user tightens the fasteners within the fastener apertures 108 to secure the shoulder onto the stack. The user rotates the bowl to the proper orientation. Tightening the shoulder 104, such as a flange, onto the stack, causes the lip 112 of the shoulder 104 to frictionally engage the foot 114. Such contact between the lip 112 and the foot 114 limits rotation of the neck and foot within the shoulder when the shoulder is tightened down on the stack. To rotate the bowl, the user simply loosens the fasteners to decrease the frictional engagement of the lip with the foot to rotate the bowl. Tightening the fasteners limits rotation of the bowl and the foot within the shoulder.

(25) Seal groove 116 provides an area for placement of a seal. The seal creates a seal between the neck 106 and the stack.

(26) FIGS. 8 and 9 show another embodiment of the present invention of the swivel device 118. Swivel device 118 attaches to the bowl via fasteners inserted into fastener apertures 130. Neck 126 and head 128, such as a flange, rotate to enable rotation of the bowl and the outlet.

(27) Shoulder 120 secures to the stack such that the shoulder 120 remains in a fixed position in relation to the stack. Similar to the embodiment discussed above, the fasteners insert into fastener apertures 122 downward into the stack. The user tightens the fasteners within the fastener apertures 122 to secure the shoulder 120 onto the stack. Tightening the shoulder 120, such as a flange, onto the stack, causes the shoulder 120 to frictionally engage the foot. Such contact between the lip and the foot limits rotation of the neck and foot within the shoulder. To rotate the bowl, the user simply loosens the fasteners to decrease the frictional engagement of the lip with the foot to rotate the bowl. Tightening the fasteners limits rotation of the bowl and the foot within the shoulder.

(28) The head 128, such as a flange, provides multiple fastener apertures 130 for securing the head 128 to the bowl. The bowl secures to the top of the head 128. Fasteners insert into the bowl and downward into apertures 130 of the head 128. Neck 126 and head 130 rotate with the bowl. The rotation of the head 126, head 130, and bowl adjusts the positioning of the outlet. The user rotates the neck 126, head 128, and bowl to align the outlet with the flowline.

(29) The swivel device provides a flange, such as a shoulder that secures a neck within the shoulder. The neck rotates within the shoulder to allow for repositioning of the outlet of the bowl. In one embodiment, the swivel device provides a lower shoulder that allows rotation of the neck. An upper flange, such as head 128, secured to the neck remains fixed to the neck such that the upper flange rotates with the neck. The bowl attaches to the upper flange located vertically above the shoulder. Such an embodiment with the upper flange raises the bowl off the annular.

(30) Stopping fingers 124 protrude outwardly from the neck 126. The stopping fingers 124 prevent the shoulder 120 from travelling past the stopping fingers 126. Stopping fingers 124 are located above the shoulder 120 to allow rotation of the neck 126 and head 128. The stopping fingers 124 simplify the process of transporting and moving the swivel device 118. The stopping fingers 124 prevent the shoulder 120 from travelling up the neck 126 should the swivel device 118 be turned upside down.

(31) FIGS. 10 and 11 show a sectional view of the swivel device and the attachment of head 128 with neck 126. The swivel device 118 provides an upper sealing groove 132 and a lower sealing groove 134. Seals insert into the sealing grooves 132, 134 to seal the swivel device 118. A seal placed within lower sealing groove 134 is placed adjacent the stack for sealing between the swivel device 118 and the stack. A seal is also placed within upper sealing groove 132. The seal placed within upper sealing groove 132 is located adjacent the bowl to seal between the swivel device 118 and the bowl.

(32) The head 128 located above the neck 126 maintains pressure containment within the sealing device 118. In one embodiment, the head 128 is a separate piece that is welded onto the neck 126. The head 128 is welded onto the neck with a high pressure full pin weld 129. The weld 129 contains the pressure within the swivel device 118.

(33) FIG. 11 shows the attachment of the shoulder 120 onto neck 126. The shoulder 120 fastens to the stack as discussed above via a fastener. The seal groove 134 provides an area for placement of a seal to seal between the neck 126 and the stack. The shoulder 120 secures the neck to the stack while allowing rotation of the neck 126. Lip 138 of the shoulder 120 extends inwardly to secure the neck 126. In one embodiment, the lip 138 extends radially inward.

(34) Foot 136 of neck 126 extends outwardly, such as radially outward. The lip 138 located vertically above foot 136 limits vertical movement of the neck 126 while allowing rotation of neck 126.

(35) The present invention provides a method for aligning the outlet of the bowl with the flowline. The user attaches a fixed shoulder to the stack. The shoulder limits the vertical movement of the neck. The interior surface of the shoulder narrows to a smaller diameter than the outer diameter of the neck. The narrower section of the shoulder prevents the neck from passing vertically passing through the shoulder. The shoulder limits vertical movement while allowing rotation of the neck. The user rotates the neck and the bowl to align the outlet with the flowline. After obtaining the proper orientation, the user attaches the outlet to the flowline.

(36) The user tightens the fasteners within the fastener apertures to secure the shoulder onto the stack after the bowl is properly aligned with the flowline. Tightening the shoulder, such as a flange, onto the stack, causes the shoulder to frictionally engage the foot. Such contact between the lip and the foot limits rotation of the neck and foot within the shoulder. To rotate the bowl, the user simply loosens the fasteners to decrease the frictional engagement of the lip with the foot to rotate the bowl. Tightening the fasteners limits rotation of the bowl and the foot within the shoulder.

(37) The swivel device shown in FIGS. 8-11 can be configured to attach different sized bowls to the stack. The swivel device 118 can be configured to secure a bowl sized for a 13-5/8-5 M to a stack configured to receive a bowl for 11-5 M and vice versa. Such a swivel device allows rotation of the bowl. The swivel device also allows different sized bowls to attach to different sized stacks. Such a swivel device increases the functionality of different sized bowls.

(38) From the foregoing, it will be seen that the present invention is one well adapted to obtain all the ends and objects herein set forth, together with other advantages which are inherent to the structure.

(39) It will be understood that certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations. This is contemplated by and is within the scope of the claims.

(40) As many possible embodiments may be made of the invention without departing from the scope thereof, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.