CN217681657U

CN217681657U - Casing head for oil production wellhead device

Info

Publication number: CN217681657U
Application number: CN202221841468.XU
Authority: CN
Inventors: 崔龙; 崔文琪
Original assignee: Yancheng Qihang Petroleum Machinery Co ltd
Current assignee: Yancheng Qihang Petroleum Machinery Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-10-28
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses a casing head for an oil extraction wellhead device, which comprises a casing component, a packing casing and a fixed disc arranged at the bottom of the casing; and the stabilizing assembly is arranged at the bottom of the sleeve assembly, comprises a support ring, a fixing block arranged at the top of the anti-skid block, a first elastic strip arranged at the top of the fixing block, a first bolt arranged at the outer side of the first elastic strip, and a second fixing rod arranged at the outer side of the first fixing rod. The device sets up some casing heads and has existed because the casing head carry out the in-process of controlling to the shut-in assembly time, has simplified the stability of casing head, after the casing head dress, high-tension layer oil gas makes the pipeline body take place to vibrate easily for fixed knot receives the influence and then reduces the fixity of sleeve pipe itself, the problem that can the accident even.

Description

Casing head for oil production wellhead device

Technical Field

The utility model relates to an oil development equipment technical field, especially an oil recovery casing head for wellhead assembly.

Background

The casing head is used for fixing a well mouth of a drilling well, connecting a well mouth casing string, supporting the gravity of a technical casing and an oil layer casing, sealing annular space between layers of pipes, providing transitional connection for installing a blowout preventer and a tubing head and a Christmas tree, and performing construction operations such as mud compensation, mud extrusion, monitoring, balance liquid filling and the like through two side ports on the casing head body. However, some existing casing heads have the problem that because the casing heads control the well-sealing assembly time, the stability of the casing heads is simplified, and after the casing heads are assembled, high-pressure layer oil gas easily enables the pipeline body to vibrate, so that the fixing structure is influenced, the fixing performance of the casing is reduced, and even accidents can occur.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the above and/or other problems that exist in prior casing heads for oil recovery well heads.

Therefore, the utility model aims to solve the problem that some casing heads exist because the casing head carry out the in-process of controlling to the shut-in assembly time, simplified the stability of casing head, after the casing head has been adorned, high-tension layer oil gas makes the pipeline body take place to vibrate easily for fixed knot receives the influence and then reduces the fixity of sleeve pipe itself, can the accident even.

In order to solve the technical problem, the utility model provides a following technical scheme: a casing head for an oil production wellhead device comprises a casing assembly, a packing sleeve and a fixed disc arranged at the bottom of the casing; and the stabilizing assembly is arranged at the bottom of the sleeve assembly and comprises a support ring, an anti-skid block arranged outside the support ring, a fixing block arranged at the top of the anti-skid block, a first elastic strip arranged at the top of the fixing block and a first bolt arranged at the outer side of the first elastic strip.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the sleeve comprises a first fixing rod and a second fixing rod, wherein the first fixing rod is arranged on the outer side of the bottom, and the second fixing rod is arranged on the outer side of the first fixing rod.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the sleeve comprises a second bolt arranged inside one end of the first fixing rod and a spring gasket arranged at the bottom of the second bolt.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the fixed disc comprises a first clamping ring arranged on the outer side of the bottom of the sleeve and a second clamping ring arranged on the outer side of the first clamping ring.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the fixed disc comprises third bolts arranged inside two sides of the second clamping ring and a fixed plate arranged on one side of the first clamping ring.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the fixed plate comprises a limiting clamping groove arranged inside and a limiting block arranged outside the sleeve.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the fixed plate is including setting up in the support column of one side bottom to and set up in the spud pile of support column both sides.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the fixed plate comprises a second elastic strip arranged at the top of the fixed pile.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the sleeve pipe including set up in the first ring flange at top to and set up in the connecting block of sleeve pipe both sides.

As an oil recovery is an optimal selection scheme of casing head for wellhead assembly, wherein: the connecting block is including setting up in the second ring flange in the outside, and set up in the control valve of connecting block one side.

The utility model discloses beneficial effect does: the utility model discloses a set up the protection piece in the outside of support ring, the top of non slipping spur is provided with the burr, and the bottom of spud pile is provided with the recess, and the burr at non slipping spur top and the recess joint cooperation of spud pile bottom are through rotating first bolt for first bolt downstream, the bottom extrusion bullet strip of first bolt, make bullet strip take place deformation, and then reduce the vibration range of first bolt when the sleeve pipe takes place to rock, and then the first bolt of prevention takes place not hard up because of the vibration condition. Some casing heads exist because the casing head the in-process of controlling the well shut-in assembly time, simplified the stability of casing head, after the casing head adorned, high-pressure layer oil gas makes the pipeline body take place to vibrate easily for fixed knot structure receives the influence and then reduces the fixity of casing itself, can the accident even.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is a block diagram of a casing head for a production wellhead.

Fig. 2 is a schematic view of the casing and support ring structure of the casing head for a production wellhead.

Fig. 3 is a schematic view of the construction of the first clamp ring and the retaining plate of the casing head for a production wellhead.

Fig. 4 is a rear view of the construction of the casing head for the production wellhead assembly.

Fig. 5 is an enlarged schematic view of the structure at a in fig. 2.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 and 2, a first embodiment of the present invention provides a casing head for a production wellhead that includes a casing assembly 100 and a stabilizing assembly 200. Stability of the cannula 100 is enhanced by the provision of the stabilizing assembly 200.

Specifically, the sleeve assembly 100, the block-wrapping sleeve 101, and the fixing plate 102 disposed at the bottom of the sleeve 101. The bottom of sleeve 101 is fixedly mated with the top of mounting plate 102.

Preferably, the stabilizing assembly 200, disposed at the bottom of the cannula assembly 100, includes a support ring 201, a cleat 202 disposed at the outer side of the support ring 201, a fixing block 203 disposed at the top of the cleat 202, a first elastic strip 204 disposed at the top of the fixing block 203, and a first bolt 205 disposed at the outer side of the first elastic strip 204. The outside of support ring 201 and one side fixed fit of non slipping spur 202, the bottom of fixed block 203 and the top joint cooperation of non slipping spur 202, the bottom of first bullet strip 204 and the top joint cooperation of fixed block 203, the bottom of first bolt 205 and the top joint cooperation of first bullet strip 204.

When the anti-skidding support ring is used, the support ring 201 is installed at the bottom of the sleeve 101, the anti-skidding block 202 is placed on the ground, the groove at the bottom of the fixing block 203 is aligned to the ridge at the top of the anti-skidding block 202, the ridge is in clamping fit with the groove, then the first bolt 205 is moved downwards by screwing the first bolt 205, the bottom of the first bolt 205 extrudes the first elastic strip 204, the first elastic strip 204 is deformed, the moving range of the first bolt 205 is limited, the fixity of the first bolt 205 is improved, the sleeve 101 is prevented from vibrating in the process, the first bolt 205 is rotated due to vibration due to the fact that a gap exists between the outer side thread of the first bolt 205 and the anti-skidding block 202 and the fixing block 203, and the stability of the support ring 201 is affected.

Example 2

Referring to fig. 2 to 4, the present embodiment is based on the previous embodiment, which is a second embodiment of the present invention.

Specifically, the casing 101 includes a first fixing rod 101a disposed outside the bottom, and a second fixing rod 101b disposed outside the first fixing rod 101 a. One end of the first fixing rod 101a is fixedly matched with the outer side of the sleeve 101, the bottom of the first fixing rod 101a is fixedly matched with the top of the fixing disc 102, one end of the first fixing rod 101a is in clamping fit with the top of the second fixing rod 101b, and the bottom of the second fixing rod 101b is fixedly matched with the top of the support ring 201.

Preferably, the casing 101 includes a second bolt 101c disposed inside one end of the first fixing rod 101a, and a spring washer 101d disposed at the bottom of the second bolt 101 c. The outer side of the second bolt 101c is respectively in threaded fit with the inner parts of the first fixing rod 101a and the second fixing rod 101b, and the top of the spring washer 101d is in snap fit with the bottom of the second bolt 101 c.

Preferably, the fixing plate 102 includes a first clamping ring 102a disposed at the bottom of the casing 101, and a second clamping ring 102b disposed at the outer side of the first clamping ring 102 a. One side of the first clamping ring 102a is snap-fitted to the outside of the second clamping ring 102b.

Preferably, the fixing plate 102 includes a third bolt 102c disposed inside two sides of the second clamping ring 102b, and a fixing plate 102d disposed on one side of the first clamping ring 102 a. The outer side of the third bolt 102c is engaged with the inner threads of the first clamping ring 102a and the second clamping ring 102b, respectively, and one side of the first clamping ring 102a is fixedly engaged with one side of the fixing plate 102d.

Preferably, the casing 101 includes a first flange 101e disposed at the top, and connecting blocks 101f disposed at both sides of the casing 101. The bottom of the first flange 101e is fixedly engaged with the top of the casing 101, and one side of the connecting block 101f is fixedly engaged with one side of the casing 101.

In use, the support ring 201 is installed at the bottom of the sleeve 101, the anti-slip block 202 is placed on the ground, the groove at the bottom of the fixing block 203 is aligned with the ridge at the top of the anti-slip block 202, so that the ridge is in clamping fit with the groove, then the first bolt 205 is moved downwards by tightening the first bolt 205, the bottom of the first bolt 205 presses the first elastic strip 204, so that the first elastic strip 204 is deformed, the moving range of the first bolt 205 is limited, the fixing performance of the first bolt 205 is improved, and the sleeve 101 is prevented from vibrating, because a gap exists between the outside thread of the first bolt 205 and the anti-slip block 202 and the fixing block 203, the first bolt 205 is rotated due to vibration, so that the first bolt 205 is loosened, and the stability of the support ring 201 is affected, when the sleeve 101 needs to be installed, the outside of the second bolt 101c is fixed with the insides of the first fixing rod 101a and the second fixing rod 101b by screwing the second bolt 101c, so that the outside of the second bolt 101c is fixed with the inside of the first fixing rod 101a and the second fixing rod 101b, and the clamping ring 102 are fastened, and the clamping ring 102 is tightened, and the second bolt 101c is placed on the outside of the fixing clamp ring 102, and the fixing ring 102, so that the fixing ring 102 is clamped outside of the second bolt 101a is clamped with the fixing clamp 102b, and the fixing ring 101b, and the clamping ring 102, and the clamping part 102b, and the clamping part 102 is tightened.

Example 3

Referring to fig. 1 to 5, a third embodiment of the present invention is based on the first two embodiments.

Specifically, the fixing plate 102d includes a limiting slot 102d-1 disposed inside and a limiting block 102d-2 disposed outside the casing 101. The clamping groove 102d-1 is arranged inside one side of the fixing plate 102d, one side of the limiting block 102d-2 is fixedly matched with the outer side of the sleeve 101, and the outer side of the limiting block 102d-2 is in clamping fit with the inner part of the limiting clamping groove 102 d-1.

Preferably, the fixing plate 102d includes a support post 102d-3 provided at the bottom of one side, and fixing posts 102d-4 provided at both sides of the support post 102 d-3. The top of support column 102d-3 is in fixed engagement with the bottom of mounting plate 102d and one side of spud 102d-4 is in fixed engagement with one side of support column 102 d-3.

Preferably, the fixing plate 102d includes a second resilient strip 102d-5 disposed at the top of the fixing peg 102d-4. The bottom of the second spring 102d-5 snap fits the top of the spud 102d-4.

Preferably, the connecting block 101f includes a second flange 101f-1 disposed on the outside, and a control valve 101f-2 disposed on one side of the connecting block 101f. One side of the second flange plate 101f-1 is fixedly matched with one side of the connecting block 101f, and one side of the control valve 101f-2 is rotatably matched with one side of the connecting block 101f.

In use, by installing the support ring 201 at the bottom of the sleeve 101, placing the anti-skid block 202 on the ground, aligning the groove at the bottom of the fixing block 203 with the ridge at the top of the anti-skid block 202, so that the ridge is in snap fit with the groove, then by tightening the first bolt 205, so that the first bolt 205 moves downwards, the bottom of the first bolt 205 presses the first elastic strip 204, so that the first elastic strip 204 is deformed, the range of motion of the first bolt 205 is limited, the fixity of the first bolt 205 is improved, and it is prevented that in the process of vibration of the sleeve 101, due to the clearance between the outer thread of the first bolt 205 and the anti-skid block 202 and the fixing block 203, the first bolt 205 is rotated by the vibration, so that the first bolt 205 is loosened, which affects the stability of the support ring 201, when the sleeve 101 needs to be installed, by screwing the second bolt 101c, the outer side of the second bolt 101c is fixed with the inner portions of the first fixing rod 101a and the second fixing rod 101b respectively, the sleeve 101 is further fixed, meanwhile, a spring gasket 101d is arranged at the bottom of the second bolt 101c to reduce the vibration amplitude of the second bolt 101c, after the fixing is completed, the first clamping ring 102a and the second clamping ring 102b are placed on the outer side of the sleeve 101, then the third bolt 102c is screwed down, the first clamping ring 102a and the second clamping ring 102b clamp and fix the outer side of the sleeve 101 in a clamping mode, meanwhile, the limiting block 102d-2 at the bottom of one side of the sleeve 101 is clamped and fixed with the inner portion of the limiting clamping groove 102d-1 at the top of the fixing plate 102d, and the bolts on two sides of the supporting column 102d-3 are screwed down, so that the second elastic strip 102d-5 is compacted, the stability of the supporting ring 201 is further improved, and the first flange plate 101e is fixed with other components.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides an oil recovery is casing head for wellhead assembly which characterized in that: comprises the steps of (a) preparing a substrate,

the sleeve assembly (100) comprises a sleeve (101) and a fixed disc (102) arranged at the bottom of the sleeve (101); and the number of the first and second groups,

the stabilizing assembly (200) is arranged at the bottom of the sleeve assembly (100) and comprises a support ring (201), an anti-skid block (202) arranged at the outer side of the support ring (201), a fixing block (203) arranged at the top of the anti-skid block (202), a first elastic strip (204) arranged at the top of the fixing block (203) and a first bolt (205) arranged at the outer side of the first elastic strip (204).

2. The casing head for a production wellhead as claimed in claim 1, wherein: the casing (101) comprises a first fixing rod (101 a) arranged outside the bottom and a second fixing rod (101 b) arranged outside the first fixing rod (101 a).

3. The casing head for a production wellhead as claimed in claim 2, wherein: the sleeve (101) comprises a second bolt (101 c) arranged inside one end of the first fixing rod (101 a) and a spring washer (101 d) arranged at the bottom of the second bolt (101 c).

4. The casing head for a production wellhead as claimed in claim 1, wherein: the fixed disc (102) comprises a first clamping ring (102 a) arranged on the outer side of the bottom of the sleeve (101), and a second clamping ring (102 b) arranged on the outer side of the first clamping ring (102 a).

5. The casing head for a production wellhead according to claim 4, wherein: the fixed plate (102) comprises third bolts (102 c) arranged inside two sides of the second clamping ring (102 b) and a fixed plate (102 d) arranged on one side of the first clamping ring (102 a).

6. The casing head for a production wellhead according to claim 5, wherein: the fixing plate (102 d) comprises a limiting clamping groove (102 d-1) arranged inside and a limiting block (102 d-2) arranged on the outer side of the sleeve (101).

7. The casing head for a production wellhead assembly of claim 5, wherein: the fixing plate (102 d) comprises a supporting column (102 d-3) arranged at the bottom of one side, and fixing piles (102 d-4) arranged at two sides of the supporting column (102 d-3).

8. The casing head for a production wellhead according to claim 7, wherein: the fixing plate (102 d) comprises a second elastic strip (102 d-5) arranged at the top of the fixing pile (102 d-4).

9. The casing head for a production wellhead as claimed in claim 1, wherein: the sleeve (101) comprises a first flange plate (101 e) arranged at the top and connecting blocks (101 f) arranged on two sides of the sleeve (101).

10. The casing head for a production wellhead as claimed in claim 9, wherein: the connecting block (101 f) comprises a second flange plate (101 f-1) arranged on the outer side, and a control valve (101 f-2) arranged on one side of the connecting block (101 f).