CN113027373B

CN113027373B - Integral wellhead assembly

Info

Publication number: CN113027373B
Application number: CN202110588006.5A
Authority: CN
Inventors: 唐凤芹; 刘智峰
Original assignee: Shengli Oilfield Sea Petroleum Machinery Manufacture Co ltd
Current assignee: Shengli Oilfield Sea Petroleum Machinery Manufacture Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-07-27
Anticipated expiration: 2041-05-28
Also published as: CN113027373A

Abstract

The invention discloses an integral wellhead device, which relates to the technical field of oil exploitation and comprises a bearing plate, a wellhead body and a wellhead device body, wherein the upper end of the bearing plate is rotatably connected with a sleeve, the upper end of the sleeve is in threaded connection with a threaded rod, the outer wall of the sleeve is fixedly sleeved with a first belt pulley, the upper end of the bearing plate is fixedly connected with a motor positioned on one side of the sleeve, and the driving end of the motor is fixedly connected with a second belt pulley. According to the wellhead device, the mounting plate moves up and down, so that the height between the wellhead device body and the lower flange is adjusted, the clamping plate moves in the direction close to the outer wall of the wellhead device in two directions, the wellhead device is fixed and clamped, the stability of the wellhead device during installation is ensured, and the condition that the wellhead device cannot be in butt joint due to the fact that the butt joint position of the upper flange and the lower flange deviates under the matching of the guide block and the balance mechanism is avoided, so that the wellhead device is rapidly installed, and the working efficiency is further improved.

Description

Integral wellhead assembly

Technical Field

The invention relates to the technical field of oil exploitation, in particular to an integral wellhead device.

Background

At present, an oil production wellhead device for an offshore oil production platform mainly depends on a foreign wellhead, and the problems of complex installation and high cost exist. The conventional oil production wellhead device is formed by connecting and combining a casing head, a casing four-way joint, a tubing head and an oil production tree.

When current wellhead assembly and well head installation, adopt the machine hoist and mount, accomplish the assembly through artificial supplementary again, wherein the in-process that the last flange of wellhead assembly and lower flange butt joint takes place the skew very easily, leads to wellhead assembly and well head to lead to the damage of flange very easily in the process of installation, thereby influence the progress of work.

To this end, we propose an integrated wellhead.

Disclosure of Invention

The present invention is directed to solving the problems of the background art by providing a unitary wellhead.

In order to achieve the purpose, the invention adopts the following technical scheme:

an integral wellhead device comprises a bearing plate, a wellhead body and a wellhead device body, wherein the upper end of the bearing plate is rotatably connected with a sleeve, the upper end of the sleeve is in threaded connection with a threaded rod, the outer wall of the sleeve is fixedly sleeved with a first belt pulley, the upper end of the bearing plate is fixedly connected with a motor positioned on one side of the sleeve, the driving end of the motor is fixedly connected with a second belt pulley, the outer walls of the first belt pulley and the second belt pulley are commonly sleeved with a belt, the outer wall of the threaded rod is in threaded connection with a threaded plate, the upper end of the threaded plate is provided with a balance mechanism, the outer wall of the threaded rod is sleeved with a mounting plate positioned above the threaded plate, one end of the mounting plate is fixedly connected with a first clamping plate, one side of the mounting plate is fixedly connected with a connecting plate arranged in a U shape, the other side of the connecting plate is in threaded connection with a screw rod, the tail end of the screw rod is fixedly connected with a second clamping plate corresponding to the first clamping plate, the utility model discloses a well head device, including splint two, connecting plate, lower extreme fixedly connected with upper flange of well head device body, the lower terminal surface of upper flange is provided with and is annular bulge loop, the fixed cover of downside outer wall of well head device body is equipped with the annular slab, the upper end threaded connection of well head body has the lower flange, the outer wall symmetry fixedly connected with backup pad of lower flange, two the equal fixedly connected with of last lateral wall of backup pad and the tangent guide block of lower flange lateral wall, the last lateral wall of lower flange seted up with bulge loop assorted annular groove, through a plurality of screw fixed connection between upper flange and the lower flange, the lower lateral wall symmetry fixedly connected with heel post of heel post, every the equal fixed mounting of lower extreme of heel post has the universal wheel that has the foot brake.

Preferably, the balance mechanism includes that the symmetry sets up the support column on the threading board, two the common fixedly connected with cover in top of support column establishes the lantern ring board on the threaded rod, the outer wall symmetry of lantern ring board slides and inserts and is equipped with the carriage release lever that extends to lantern ring inboard, two the equal fixedly connected with of one side that the carriage release lever is relative supports the board with threaded rod outer wall sliding contact, two the equal fixedly connected with baffle of tip that the carriage release lever was kept away from mutually is located same one side equal fixedly connected with slide sleeve establishes the spring on the carriage release lever outer wall between the outer wall of baffle one and lantern ring board, the last lateral wall of lantern ring board and the lower lateral wall fixed connection of mounting panel.

Preferably, a bearing is fixedly embedded in the upper side wall of the bearing plate, and an inner ring of the bearing is fixedly connected with the outer wall of the sleeve.

Preferably, the threaded plate is symmetrically provided with first sliding grooves matched with the two supporting columns.

Preferably, the upper side wall fixedly connected with of bearing plate extends to the spacing post of mounting panel top, set up on the mounting panel with spacing post assorted spout two.

Preferably, the upper side walls of the first clamping plate and the second clamping plate are fixedly connected with anti-skid plates which are abutted to the lower side walls of the annular plates.

Compared with the prior art, this integral wellhead assembly's advantage lies in:

1. by arranging the motor, the first belt pulley, the second belt pulley, the sleeve, the threaded rod and the mounting plate, starting the motor, driving the second belt pulley to rotate clockwise by the driving end of the motor, further driving the first belt pulley, the sleeve and the threaded rod to rotate clockwise, further driving the threaded plate, the mounting plate, the first clamping plate, the second clamping plate and the wellhead device body to move downwards, driving the second belt pulley to rotate anticlockwise by the driving end of the motor, further driving the first belt pulley, the sleeve and the threaded rod to rotate anticlockwise, further driving the threaded plate, the mounting plate, the first clamping plate, the second clamping plate and the wellhead device body to move downwards, and therefore height adjustment between the wellhead device body and a lower flange is;

2. the first clamping plate and the second clamping plate are sleeved outside the wellhead device body by arranging the first clamping plate, the second clamping plate, the lead screw, the annular plate and the antiskid plate, so that the top end of the antiskid plate is tightly attached to the lower side wall of the annular plate to position the antiskid plate, the wellhead device body is prevented from sliding after clamping is finished, the lead screw is screwed clockwise to drive the clamping plate to move in a direction close to the outer wall of the wellhead device body, and therefore the wellhead device body is fixedly clamped, and the stability of the wellhead device body during installation is ensured;

3. by arranging the lower flange, the supporting plate, the guide block, the convex ring, the annular groove and the balance mechanism, the upper flange of the wellhead device is accurately aligned to the lower flange along the direction of the guide block under the action of the guide block in the process of butting the lower flange, and the balance mechanism plays a role in fine adjustment in the left and right directions of the wellhead device body, so that the condition that the wellhead device cannot be butted when the upper flange and the lower flange deviate in position is avoided, the rapid installation of the wellhead device is further improved, and the working efficiency is further improved;

in conclusion, the wellhead device body and the lower flange are adjusted in height through the up-and-down movement of the mounting plate, the clamping plate moves in the direction close to the outer wall of the wellhead device body in two directions, so that the wellhead device body is fixedly clamped, the stability of the wellhead device during installation is ensured, the condition that the wellhead device cannot be in butt joint due to the fact that the upper flange and the lower flange are deviated in butt joint positions under the cooperation of the guide block and the balance mechanism is avoided, the wellhead device is rapidly installed, and the working efficiency is further improved.

Drawings

FIG. 1 is a perspective view of a one-piece wellhead according to the present invention;

FIG. 2 is an enlarged view of the junction between the casing, threaded plate, collar plate, mounting plate, threaded rod of the integrated wellhead assembly of the present invention;

FIG. 3 is an enlarged view of the junction between the lower flange, the support plate, the guide block and the annular groove of an integrated wellhead assembly in accordance with the present invention;

fig. 4 is an enlarged view of an upper flange of a unitary wellhead according to the present invention.

In the figure: the device comprises a bearing plate 1, a bearing 2, a sleeve 3, a threaded rod 4, a belt pulley I5, a belt pulley II 6, a motor 7, a threaded plate 8, a supporting column 9, a sliding chute I10, a baffle I11, a ring plate 12, a baffle II 13, a limiting column 14, a spring 15, a pushing plate 16, a sliding chute II 17, a moving rod 18, a mounting plate 19, a clamping plate I20, a connecting plate 21, a screw rod 22, a clamping plate II 23, a guide rod 24, an upper flange 25, a screw 26, a convex ring 27, a lower flange 28, an annular groove 29, a supporting plate 30, a guide block 31, a wellhead body 32, an annular plate 33, an antiskid plate 34 and a wellhead device body 35.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, an integrated wellhead assembly includes a bearing plate 1, the wellhead device comprises a wellhead body 32 and a wellhead device body 35, the upper end of a bearing plate 1 is rotatably connected with a sleeve 3, the upper side wall of the bearing plate 1 is fixedly embedded with a bearing 2, the inner ring of the bearing 2 is fixedly connected with the outer wall of the sleeve 3, the upper end of the sleeve 3 is in threaded connection with a threaded rod 4, the outer wall of the sleeve 3 is fixedly sleeved with a first belt pulley 5, the upper end of the bearing plate 1 is fixedly connected with a motor 7 positioned on one side of the sleeve 3, the motor 7 adopts a servo motor with the model of MR-J2S-10A, the driving end of the motor 7 is fixedly connected with a second belt pulley 6, the outer walls of the first belt pulley 5 and the second belt pulley 6 are commonly sleeved with belts, the outer wall of the threaded rod 4 is in threaded connection with a threaded plate 8, the outer wall of the threaded rod 4 is sleeved with a mounting plate 19 positioned above the threaded plate 8, and the mounting plate 19 is provided with a third chute matched with the threaded rod 4; after the motor 7 is started, the sleeve 3 rotates under the action of the first belt pulley 5, so that the threaded rod 4 moves up and down, and the up-down position of the wellhead device body 35 is adjusted.

The upper side wall of the bearing plate 1 is fixedly connected with a limiting column 14 extending to the upper side of the mounting plate 19, the limiting column 14 can prevent the mounting plate 19 from rotating together with the threaded rod 4, the mounting plate 19 is provided with a sliding groove II 17 matched with the limiting column 14, the sliding groove I10, the sliding groove II 17 and the sliding groove III enable the mounting plate 19 to move in the left and right directions, the driving end of the motor 7 drives the belt pulley II 6 to rotate clockwise, further drives the belt pulley I5, the sleeve 3 and the threaded rod 4 to rotate clockwise, further drives the driving threaded plate 8, the mounting plate 19, the clamping plate I20, the clamping plate II 23 and the wellhead device body 35 to move downwards, the driving end of the motor 7 drives the belt pulley II 6 to rotate anticlockwise, further drives the belt pulley I5, the sleeve 3 and the threaded rod 4 to rotate anticlockwise, further drives the threaded plate 8, the mounting plate 19, the clamping, thereby allowing height adjustment between the wellhead body 35 and the lower flange 28.

One end fixedly connected with splint one 20 at mounting panel 19, one side fixedly connected with of mounting panel 19 is the connecting plate 21 that the U type set up, and the opposite side threaded connection of connecting plate 21 has lead screw 22, and the terminal fixedly connected with of lead screw 22 corresponds with splint two 23 of splint one 20 positions, can the fixed wellhead assembly body 35 of centre gripping through splint one 20 and splint two 23. The right side wall of the second clamping plate 23 is symmetrically and fixedly connected with guide rods 24 extending to the right side of the connecting plate 21, and a stable guiding effect is achieved through the guide rods 24; the fixed cover of downside outer wall of wellhead assembly body 35 is equipped with annular plate 33, splint one 20 and splint two 23 the equal fixedly connected with of the last lateral wall of splint and annular plate 33 down the antiskid ribbed tile 34 of lateral wall looks butt contact, overlap splint one 20 and splint two 23 in the outside of wellhead assembly body 35, make the lower lateral wall of annular plate 33 hug closely on antiskid ribbed tile 34 top, avoid the centre gripping to finish the back because factors such as outer wall lead to the sliding or the slope of wellhead assembly body 35, be convenient for fix a position, then revolve wrong lead screw 22 clockwise, drive splint two 23 to the direction removal that is close to wellhead assembly body 35 outer wall, thereby accomplish the fixed centre gripping to wellhead assembly body 35, guarantee the stability of wellhead assembly body 35 when the installation.

Flange 25 on the lower extreme fixedly connected with of wellhead assembly body 35, the lower terminal surface of going up flange 25 is provided with and is annular bulge loop 27, the upper end threaded connection of wellhead body 32 has

lower flange

28, 32 outer wall screw threads of wellhead body need the winding sealing adhesive tape, thereby guarantee the leakproofness that wellhead body 32 and lower flange 28 are connected, the outer wall symmetry fixedly connected with backup pad 30 of lower flange 28, the equal fixedly connected with of the last lateral wall of two backup pads 30 and the tangent guide block 31 of 28 lateral walls of lower flange, be convenient for the quick centering of wellhead assembly body 35 and lower flange 28 through guide block 31.

The upper side wall of the lower flange 28 is provided with an annular groove 29 matched with the convex ring 27, and the arrangement of the convex ring 27 and the annular groove 29 can improve the sealing performance when the lower flange 28 is connected with the upper flange 25 and can ensure quick centering; the upper flange 25 and the lower flange 28 are fixedly connected through a plurality of screws 26, and in the process that the upper flange 25 of the wellhead body 35 is abutted to the lower flange 28, the upper flange 25 is accurately aligned to the lower flange 28 along the direction of the guide block 31 under the action of the guide block 31.

The upper end of the thread plate 8 is provided with a balance mechanism, the balance mechanism comprises support columns 9 symmetrically arranged on the thread plate 8, the thread plate 8 is symmetrically provided with a first sliding groove 10 matched with the two support columns 9, a collar plate 12 sleeved on the threaded rod 4 is fixedly connected with a common top end of the two support columns 9, an outer wall of the collar plate 12 is symmetrically slidably inserted with a moving rod 18 extending to the inner side of the collar plate 12, a supporting plate 16 in sliding contact with the outer wall of the threaded rod 4 is fixedly connected with one side of the two moving rods 18 opposite to each other, a first end part fixedly connected with baffle plate 11 far away from the two moving rods 18, a spring 15 sleeved on the outer wall of the moving rod 18 is fixedly connected with a sliding sleeve between the first baffle plate 11 on the same side and the outer wall of the collar plate 12, and an upper side wall of the collar plate 12 is fixedly connected with a lower side wall of the mounting plate 19. When the wellhead body 35 is centered with the lower flange 28, fine adjustment of the mounting plate 19 in the left-right direction can be achieved by the spring 15, facilitating docking. Can play the fine setting to wellhead assembly body 35 left and right sides ascending through balance mechanism, when avoiding

flange

25 and 28 position emergence squints down, lead to the unable condition of butt joint of wellhead assembly, and then improved wellhead assembly's quick installation, further improvement work efficiency, the lower lateral wall symmetry fixedly connected with heel post of heel plate 1, the equal fixed mounting of lower extreme of every heel post has the universal wheel that has the service brake.

Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

The operating principle of the present invention is now explained as follows:

during operation, the first clamping plate 20 and the second clamping plate 23 are sleeved on the outer side of the wellhead device body 35, so that the top end of the anti-skid plate 34 is tightly attached to the lower side wall of the annular plate 33, the phenomenon that the wellhead device body 35 slides due to outer wall factors and the like after clamping is finished is avoided, positioning is facilitated, the lead screw 22 is screwed clockwise, the second clamping plate 23 is driven to move towards the direction close to the outer wall of the wellhead device body 35, fixed clamping on the wellhead device body 35 is completed, the stability of the wellhead device body 35 during installation is ensured, the motor 7 is started, the driving end of the motor 7 drives the second belt pulley 6 to rotate clockwise, the first belt pulley 5, the sleeve 3 and the threaded rod 4 are driven to rotate clockwise, and the threaded plate 8, the mounting plate 19, the first clamping plate 20, the second clamping plate 23 and the wellhead device body 35 are driven to move downwards;

the driving end of the motor 7 drives the second belt pulley 6 to rotate anticlockwise so as to drive the first belt pulley 5, the sleeve 3 and the threaded rod 4 to rotate anticlockwise, thereby driving the driving thread plate 8, the mounting plate 19, the first clamping plate 20, the second clamping plate 23 and the wellhead device body 35 to move upwards, the height adjustment between the wellhead body 35 and the lower flange 28 is realized through up-and-down movement adjustment, and in the process that the upper flange 25 of the wellhead body 35 is butted with the lower flange 28, the upper flange 25 will be accurately aligned with the lower flange 28 in the direction of the guide block 31 under the action of the guide block 31, when fine adjustment of the wellhead body 35 in the left-right direction is enabled by the balance mechanism to avoid the upper flange 25 and the lower flange 28 from being shifted in position, the condition that the wellhead device cannot be butted is caused, so that the rapid installation of the wellhead device is improved, and the working efficiency is further improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An integral wellhead device comprises a bearing plate (1), a wellhead body (32) and a wellhead device body (35), and is characterized in that the upper end of the bearing plate (1) is rotatably connected with a sleeve (3), the upper end of the sleeve (3) is in threaded connection with a threaded rod (4), the outer wall of the sleeve (3) is fixedly sleeved with a first belt pulley (5), the upper end of the bearing plate (1) is fixedly connected with a motor (7) located on one side of the sleeve (3), the driving end of the motor (7) is fixedly connected with a second belt pulley (6), and the outer walls of the first belt pulley (5) and the second belt pulley (6) are commonly sleeved with a belt;

the outer wall threaded connection of threaded rod (4) has screw plate (8), the upper end of screw plate (8) is provided with balance mechanism, the outer wall cover of threaded rod (4) is equipped with mounting panel (19) that is located screw plate (8) top, the one end fixedly connected with splint (20) of mounting panel (19), one side fixedly connected with of mounting panel (19) is connecting plate (21) that the U type set up, the opposite side threaded connection of connecting plate (21) has lead screw (22), the terminal fixedly connected with of lead screw (22) is splint two (23) that correspond with splint (20) position, the right side wall symmetry fixedly connected with of splint two (23) extends to guide bar (24) on connecting plate (21) right side, the lower extreme fixedly connected with upper flange (25) of wellhead assembly body (35), the lower terminal surface of upper flange (25) is provided with and is annular bulge loop (27), an annular plate (33) is fixedly sleeved on the outer wall of the lower side of the wellhead device body (35), the upper end of the wellhead body (32) is in threaded connection with a lower flange (28), the outer wall of the lower flange (28) is symmetrically and fixedly connected with supporting plates (30), the upper side walls of the two supporting plates (30) are fixedly connected with guide blocks (31) tangent to the outer side wall of the lower flange (28), the upper side wall of the lower flange (28) is provided with annular grooves (29) matched with the convex rings (27), the upper flange (25) and the lower flange (28) are fixedly connected through a plurality of screws (26), the lower side wall of the bearing plate (1) is symmetrically and fixedly connected with bearing columns, and the lower end of each bearing column is fixedly provided with a universal wheel with a foot brake;

balance mechanism sets up support column (9) on threaded plate (8), two including the symmetry the common fixedly connected with cover in top of support column (9) establishes lantern ring board (12) on threaded rod (4), the outer wall symmetry of lantern ring board (12) slides and inserts and is equipped with carriage release lever (18) that extend to lantern ring board (12) inboard, two the equal fixedly connected with in one side that carriage release lever (18) is relative supports board (16) with threaded rod (4) outer wall sliding contact, two the equal fixedly connected with baffle of tip that carriage release lever (18) kept away from mutually is (11), is located same one side equal fixedly connected with sliding sleeve establishes spring (15) on carriage release lever (18) outer wall between the outer wall of baffle (11) and lantern ring board (12), the side wall fixed connection of going up of lantern ring board (12) and mounting panel (19).

2. An integral wellhead device according to claim 1 characterised in that the bearing (2) is fixedly embedded in the upper side wall of the bearing plate (1), and the inner ring of the bearing (2) is fixedly connected with the outer wall of the casing (3).

3. An integral wellhead assembly according to claim 1 characterised in that the threaded plate (8) is symmetrically provided with first slide grooves (10) matching with the two support columns (9).

4. The integral wellhead device according to claim 1, characterized in that the upper side wall of the bearing plate (1) is fixedly connected with a limit column (14) extending above the mounting plate (19), and the mounting plate (19) is provided with a second sliding groove (17) matched with the limit column (14).

5. A unitary wellhead according to claim 1 in which the upper side walls of the first (20) and second (23) plates are each fixedly connected with a non-slip plate (34) which contacts against the lower side wall of the annular plate (33).