Turntable bushing for high-pressure wellhead

Abstract

The utility model discloses a turntable bushing for a high-pressure wellhead. The turntable bushing comprises a mounting cylinder formed by assembling a first semicircular cylinder body and a second semicircular cylinder body. The first semicircular cylinder is provided with a semicircular first bearing plate, the second semicircular cylinder is provided with a semicircular second bearing plate, the first bearing plate and the second bearing plate jointly form a bearing assembly, the inner wall face of the first semicircular cylinder is further provided with a first semi-ring body, and the first semi-ring body and the first bearing plate are arranged at intervals. The turntable bushing for the high-pressure wellhead further comprises a second semi-ring body, the two ends of the second semi-ring body are detachably connected with the two ends of the first semi-ring body respectively, and the first semi-ring body and the second semi-ring body are jointly matched with the bearing assembly to form a first limiting structure for limiting a bearing ring of the high-pressure wellhead. Relative movement of the mounting cylinder and the high-pressure wellhead in the mounting and dismounting process is avoided, and mounting and dismounting safety is effectively improved. And the turntable bushing for the high-pressure wellhead is relatively simple in structure and convenient and efficient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum and natural gas drilling and mining equipment technical field especially relates to a high pressure well mouth uses rotary table supplement heart. BACKGROUND

[0002] High pressure well mouth is the indispensable component part of underwater well mouth, because high pressure well mouth maximum outer diameter is greater than the maximum gauge of the rotary table supplement heart commonly used in the drilling platform, when connecting down high pressure well mouth, need to take out the rotary table main supplement heart, after high pressure well mouth enters water, install back, but, in the case of no main supplement heart on the rotary table surface, high pressure well mouth and casing string cannot be hung on the rotary table surface, cannot carry out operation. UTILITARY MODEL CONTENTS

[0003] The utility model solves the technical problem in, provide a kind of rotary table supplement heart for high pressure well mouth.

[0004] The utility model discloses a kind of rotary table supplement hearts for high pressure well mouth, it is equipped with installation cylinder by first half cylinder and second half cylinder, the installation cylinder has the receiving cavity for high pressure well mouth is contained therein;

[0005] The lower end of the inner wall surface of the first half cylinder is provided with the first bearing plate of semicircle, the lower end of the inner wall surface of the second half cylinder is provided with the second bearing plate of semicircle, the first bearing plate and the second bearing plate form bearing assembly, the inner wall surface of the first half cylinder is further provided with first half ring body, the first half ring body is spaced apart from the first bearing plate, the rotary table supplement heart for high pressure well mouth further includes second half ring body, two ends of the second half ring body are respectively detachably connected with two ends of the first half ring body, the first half ring body and the second half ring body cooperate with the bearing assembly to form the first limiting structure for limiting the bearing ring of high pressure well mouth.

[0006] In some embodiments, the inner wall surface of the first half cylinder is provided with a plurality of first inner support plates close to its upper end, a plurality of the first inner support plates are spaced apart along the circumferential direction of the installation cylinder, the inner wall surface of the second half cylinder is provided with a plurality of second inner support plates close to its upper end, a plurality of the second inner support plates are spaced apart along the circumferential direction of the installation cylinder, the first inner support plates and the second inner support plates cooperate to form the second limiting structure for limiting the main body of high pressure well mouth.

[0007] In some embodiments, the side surface of the first inner support plate towards the center side of the installation cylinder is a plane; the side surface of the second inner support plate towards the center side of the installation cylinder is a plane.

[0008] In some embodiments, two ends of the lower surface of the first bearing plate are respectively provided with first connecting ears, two ends of the lower surface of the second bearing plate are respectively provided with second connecting ears, and the first connecting ears and the second connecting ears are connected by a first fastener.

[0009] The upper end surface of the first semi-cylindrical body is provided with a semi-circular first mounting plate, two ends of the upper surface of the first mounting plate are respectively provided with third connecting ears, the upper end surface of the second semi-cylindrical body is provided with a semi-circular second mounting plate, two ends of the upper surface of the second mounting plate are respectively provided with fourth connecting ears, and the third connecting ears and the fourth connecting ears are connected by a second fastener.

[0010] In some embodiments, the first fastener and the second fastener each include a fastening bolt.

[0011] In some embodiments, the upper surface of the first mounting plate is provided with a plurality of first lifting lugs, and the upper surface of the second mounting plate is provided with a plurality of second lifting lugs.

[0012] In some embodiments, the high-pressure wellhead rotary table backup includes a plurality of first outer support plates and a plurality of second outer support plates, the first outer support plates connect the outer wall surface of the first semi-cylindrical body and the lower surface of the first mounting plate, and the second outer support plates connect the outer wall surface of the second semi-cylindrical body and the lower surface of the second mounting plate.

[0013] In some embodiments, the lower surface of the first bearing plate is provided with a plurality of third lifting lugs, and the lower surface of the second bearing plate is provided with a plurality of fourth lifting lugs.

[0014] In some embodiments, the second semi-ring body and the inner wall surface of the second semi-cylindrical body are spaced apart.

[0015] In some embodiments, the second semi-ring body includes a first semi-ring portion, two ends of the length direction of the first semi-ring portion are respectively provided with a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion are respectively detachably connected to two ends of the first semi-ring body.

[0016] The utility model discloses a following beneficial effect has: the high pressure well mouth is with the carousel core of supplementing including the installation cylinder that is assembled by first half cylinder and second half cylinder, and the installation cylinder has the containing cavity that is used to contain high pressure well mouth. The lower end of the inner wall surface of first half cylinder is equipped with the first bearing plate of semicircle, and the lower end of the inner wall surface of second half cylinder is equipped with the second bearing plate of semicircle, and first bearing plate and second bearing plate form bearing assembly together, and the inner wall surface of first half cylinder is equipped with first half ring body, and first half ring body is arranged at the interval with first bearing plate, and the carousel core of supplementing of high pressure well mouth still includes second half ring body, and the both ends of second half ring body are respectively with the both ends of first half ring body detachable connection, and first half ring body and second half ring body cooperate with bearing assembly to form the first limiting structure that is used for limiting the bearing ring of high pressure well mouth, avoid the relative movement of installation cylinder and high pressure well mouth during installation, dismounting process, effectively improve installation, dismounting safety. The carousel core of supplementing of high pressure well mouth can be used for hanging high pressure well mouth and casing string on the carousel surface, and simultaneously makes a part of high pressure well mouth sink below the carousel surface, makes the end surface of high pressure well mouth closer to the carousel, and is convenient for installing cementing string and rubber plug in high pressure well mouth. In addition, the carousel core of supplementing of high pressure well mouth is relatively simple in structure, and convenient and efficient in dismounting. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in combination with the drawings and examples, and it should be understood that the following drawings only show some examples of the utility model, and therefore should not be regarded as the limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0018] Figure 1 It is one of the structure schematic diagram of the carousel core of supplementing of high pressure well mouth in some examples of the utility model;

[0019] Figure 2 It is one of the structure schematic diagram of the carousel core of supplementing of high pressure well mouth in some examples of the utility model;

[0020] Figure 3 It is the sectional view of the carousel core of supplementing of high pressure well mouth in some examples of the utility model;

[0021] Figure 4 It is the structure schematic diagram of the first limiting structure in some examples of the utility model;

[0022] Figure 5 It is the structure schematic diagram of the carousel core of supplementing of high pressure well mouth and high pressure well mouth cooperation in some examples of the utility model;

[0023] Figure 6 It is Figure 5 the sectional view along A-A line in it. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and do not indicate that the devices or elements referred to must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0025] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly include one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the following description, specific details such as specific system structures, technologies, etc. are presented for the purpose of illustration, not for the purpose of limitation, so as to thoroughly understand the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits and methods are omitted to avoid unnecessary details that hinder the description of the present application.

[0027] Referring to Figures 1 to 6 The present application shows a kind of high pressure well mouth with rotary table core, it can be used to hang high pressure well mouth 100 and casing string on rotary table surface, simultaneously let high pressure well mouth 100 part sink to rotary table surface below, make high pressure well mouth 100 end face distance rotary table closer, it is convenient to install cementing string and rubber plug in high pressure well mouth 100.

[0028] Referring toFigures 1 to 6 The high-pressure wellhead rotary table compensating core can include a mounting cylinder assembled by the first half-cylinder 10 and the second half-cylinder 20, which has a receiving cavity a (as shown in Figure 6 ) for accommodating the high-pressure wellhead 100. The mounting cylinder has a substantially cylindrical structure.

[0029] The lower end of the inner wall surface of the first half-cylinder 10 is provided with a semicircular first bearing plate 11, and the lower end of the inner wall surface of the second half-cylinder 20 is provided with a semicircular second bearing plate 21. The first bearing plate 11 and the second bearing plate 21 together form a bearing assembly, which can be substantially annular. The inner wall surface of the first half-cylinder 10 is also provided with a first half-ring 12, which is spaced apart from the first bearing plate 11. The high-pressure wellhead rotary table compensating core also includes a second half-ring 22, both ends of which are detachably connected to both ends of the first half-ring 12. The first half-ring 12 and the second half-ring 22 cooperate with the bearing assembly to form a first limiting structure for limiting the bearing ring 102 of the high-pressure wellhead 100, thereby avoiding relative movement between the mounting cylinder and the high-pressure wellhead 100 during installation and disassembly, effectively improving the safety of installation and disassembly. In some embodiments, the first bearing plate 11 can be defined as a first eave, and the second bearing plate 21 can be defined as a second eave.

[0030] As shown in Figures 1 to 3 , in some embodiments, the inner wall surface of the first half-cylinder 10 is provided with a plurality of first inner support plates 13 near the upper end thereof, and a plurality of the first inner support plates 13 are spaced apart along the circumferential direction of the mounting cylinder. The inner wall surface of the second half-cylinder 20 is provided with a plurality of second inner support plates 23 near the upper end thereof, and a plurality of the second inner support plates 23 are spaced apart along the circumferential direction of the mounting cylinder. The first inner support plates 13 and the second inner support plates 23 cooperate to form a second limiting structure for limiting the main body 101 of the high-pressure wellhead 100. Figure 5 and Figure 6 , the second limiting structure can be used to limit and right the main body 101 of the high-pressure wellhead 100.

[0031] As shown in Figures 1 to 3 , the side surface of the first inner support plate 13 towards the center side of the mounting cylinder is a plane; and the side surface of the second inner support plate 23 towards the center side of the mounting cylinder is a plane.

[0032] As shown in Figures 1 to 3 , the lower surface of the first bearing plate 11 is provided with a first connecting lug 111 at both ends thereof, and the lower surface of the second bearing plate 21 is provided with a second connecting lug 211 at both ends thereof. The first connecting lug 111 and the second connecting lug 211 are connected by a first fastener 30.

[0033] The upper end face of the first semi-cylindrical body 10 is provided with a semi-circular first mounting plate 14, and the two ends of the upper surface of the first mounting plate 14 are respectively provided with third connecting ears 141. The upper end face of the second semi-cylindrical body 20 is provided with a semi-circular second mounting plate 24, and the two ends of the upper surface of the second mounting plate 24 are respectively provided with fourth connecting ears 241. The third connecting ears 141 and the fourth connecting ears 241 are connected by a second fastener 40. In some embodiments, the upper end of the first semi-cylindrical body 10 extends radially outward to form the first mounting plate 14, and the upper end of the second semi-cylindrical body 20 extends radially outward to form the second mounting plate 24. In some embodiments, the first mounting plate 14 can also be defined as a third eave, and the second mounting plate 24 can also be defined as a fourth eave.

[0034] like Figures 1 to 3 As shown, both the first fastener 30 and the second fastener 40 include fastening bolts, or both the first fastener 30 and the second fastener 40 include a combination of fastening bolts and fastening nuts.

[0035] like Figures 1 to 3 As shown, the upper surface of the first mounting plate 14 is provided with a plurality of first lifting lugs 142, which are evenly spaced apart. The upper surface of the second mounting plate 24 is provided with a plurality of second lifting lugs 242, which are also evenly spaced apart. The first lifting lugs 142 facilitate the lifting of the first semi-cylindrical body 10, and the second lifting lugs 242 facilitate the lifting of the second semi-cylindrical body 20. Furthermore, the first lifting lugs 142 and the second lifting lugs 242 facilitate the lifting of the assembled mounting cylinder.

[0036] like Figures 1 to 3 As shown, the high-pressure wellhead rotary manifold includes several first outer support plates 15 and several second outer support plates 25. The first outer support plates 15 are spaced apart along the circumference of the mounting cylinder, connecting the outer wall of the first semi-cylindrical body 10 to the lower surface of the first mounting plate 14. The several second outer support plates 25 are spaced apart along the circumference of the mounting cylinder, connecting the outer wall of the second semi-cylindrical body 20 to the lower surface of the second mounting plate 24. The first outer support plates 15 enhance the structural strength of the first semi-cylindrical body 10 and better support the first mounting plate 14. The second outer support plates 25 enhance the structural strength of the second semi-cylindrical body 20 and better support the second mounting plate 24. Furthermore, the first outer support plates 15 and second outer support plates 25 can be used for rotary manifold alignment.

[0037] In some embodiments, the first semi-cylindrical body 10, the first inner support plate 13, and the first outer support plate 15 are integral structures. The second semi-cylindrical body 20, the second inner support plate 23, and the second outer support plate 25 are integral structures.

[0038] In some embodiments, the lower surface of the first bearing plate 11 is provided with a plurality of third lifting lugs 112, and the lower surface of the second bearing plate 21 is provided with a plurality of fourth lifting lugs 212, so as to facilitate hoisting the first half-cylinder 10 and the second half-cylinder 20.

[0039] As shown in Figure 4 some embodiments, the second half-ring 22 is spaced apart from the inner wall surface of the second half-cylinder 20, so that a gap b is formed between the second half-ring 22 and the inner wall surface of the second half-cylinder 20, which can accommodate structures such as the lifting ring 103 on the bearing ring 102, avoiding interference.

[0040] As shown in Figure 4 some embodiments, the second half-ring 22 includes a first half-ring portion 221, and the two ends of the length direction of the first half-ring portion 221 are respectively provided with a first connecting portion 222 and a second connecting portion 223, which are respectively detachably connected to the two ends of the first half-ring 12, and can be detachably connected by fastening bolts.

[0041] In some embodiments, the high-pressure wellhead rotary table compensating core can be made of a metal material, including but not limited to stainless steel.

[0042] The high-pressure wellhead rotary table compensating core is applied as follows:

[0043] Horizontal installation condition: Place a suitable height of a sleeper on the ground or deck, place the head of the high-pressure wellhead 100 on the sleeper, and fix it well. Place the first half-cylinder 10 with the inner wall surface upward, hoist it with a 4-limb lifting sling, move it horizontally to the lower side of the high-pressure wellhead 100, adjust the direction and height of the first half-cylinder 10, make the first half-cylinder 10 hold the high-pressure wellhead 100, connect the first half-ring 12 and the second half-ring 22 through fastening bolts, etc., slowly loosen the lifting sling, and confirm that the rotary table compensating core and the high-pressure wellhead 100 can be normally connected. Place the second half-cylinder 20 with the inner wall surface downward, hoist it with a 4-limb lifting sling, make the second half-cylinder 20 buckle on the high-pressure wellhead 100, adjust the direction and height of the second half-cylinder 20, install and connect the first half-cylinder 10 and the second half-cylinder 20, to form an installation cylinder relative to the high-pressure wellhead 100.

[0044] Vertical installation condition: the high pressure well head 100 is vertically lifted and placed on a rotary table or the ground, temporary fixing work is done, the first half cylinder 10 is vertically lifted by a two-limb lifting sling, the first half cylinder 10 is moved to one side of the high pressure well head 100, the direction and height of the first half cylinder 10 are adjusted, the first half cylinder 10 is sleeved outside the high pressure well head 100. The first half ring 12 is connected with the second half ring 22, the lifting sling is slowly loosened, and it is confirmed that the rotary table compensating head can be normally connected with the high pressure well head. The second half cylinder 20 is vertically lifted by a two-limb lifting sling, is moved to one side of the high pressure well head 100, the second half cylinder 20 is buckled on the high pressure well head 100, the direction and height of the second half cylinder 20 are adjusted, the first half cylinder 10 and the second half cylinder 20 are connected, and the installation cylinder is relatively fixed to the high pressure well head 100.

[0045] Vertical dismounting condition: the high pressure well head 100 provided with the rotary table compensating head is vertically lifted, is hung on the rotary table through a casing slip, the second half cylinder 20 is vertically lifted by a two-limb lifting sling, the first half cylinder 10 and the second half cylinder 20 are dismounted and separated, the second half cylinder 20 is lifted away from the high pressure well head 100, the first half cylinder 10 is vertically lifted by a two-limb lifting sling, the first half ring 12 and the second half ring 22 are dismounted and separated, and the first half cylinder 10 is lifted away from the high pressure well head 100.

[0046] Understandably, the high pressure well head can be relatively fixed by the rotary table compensating head, the structure is relatively simple, and the dismounting is convenient and efficient.

[0047] Understandably, the above embodiment only expresses the preferred implementation manner of the utility model, the description is relatively specific and detailed, but can not be understood as the limitation on the patent range of the utility model; it should be pointed out that the above technical features can be freely combined without departing from the concept of the utility model, and a plurality of deformations and improvements can be made, which belong to the protection range of the utility model; therefore, the equivalent transformation and modification made in the patent claim range of the utility model should belong to the coverage range of the patent claim of the utility model.

Claims

1. A rotary table compensator for high pressure wellheads, characterized in that, The installation cylinder is assembled by a first half cylinder (10) and a second half cylinder (20), and has a containing cavity (a) for containing a high-pressure well head (100); A lower end of an inner wall surface of the first half cylinder (10) is provided with a first bearing plate (11) in a semicircular shape, a lower end of an inner wall surface of the second half cylinder (20) is provided with a second bearing plate (21) in a semicircular shape, the first bearing plate (11) and the second bearing plate (21) jointly form a bearing assembly, the inner wall surface of the first half cylinder (10) is further provided with a first half ring (12), the first half ring (12) is arranged in a spaced manner with the first bearing plate (11), the high-pressure well head rotary disc compensator further comprises a second half ring (22), two ends of the second half ring (22) are detachably connected with two ends of the first half ring (12), and the first half ring (12) and the second half ring (22) jointly cooperate with the bearing assembly to form a first limiting structure for limiting a bearing ring (102) of the high-pressure well head (100).

2. The high pressure wellhead rotary control device backup as claimed in claim 1, wherein, A position close to an upper end of the inner wall surface of the first half cylinder (10) is provided with a plurality of first inner support plates (13), the plurality of first inner support plates (13) are arranged in a spaced manner along a circumferential direction of the installation cylinder, a position close to an upper end of the inner wall surface of the second half cylinder (20) is provided with a plurality of second inner support plates (23), the plurality of second inner support plates (23) are arranged in a spaced manner along the circumferential direction of the installation cylinder, and the first inner support plates (13) and the second inner support plates (23) jointly cooperate to form a second limiting structure for limiting a main body (101) of the high-pressure well head (100).

3. The high pressure wellhead rotary control device backup as claimed in claim 2, wherein, A side surface of the first inner support plate (13) towards a center side of the installation cylinder is a plane, and a side surface of the second inner support plate (23) towards the center side of the installation cylinder is a plane.

4. The high pressure wellhead rotary control assembly of claim 1, wherein, Two ends of a lower surface of the first bearing plate (11) are respectively provided with first connecting ears (111), two ends of a lower surface of the second bearing plate (21) are respectively provided with second connecting ears (211), and the first connecting ears (111) and the second connecting ears (211) are connected through a first fastener (30). An upper end surface of the first half cylinder (10) is provided with a first mounting plate (14) in a semicircular shape, two ends of an upper surface of the first mounting plate (14) are respectively provided with third connecting ears (141), an upper end surface of the second half cylinder (20) is provided with a second mounting plate (24) in a semicircular shape, two ends of an upper surface of the second mounting plate (24) are respectively provided with fourth connecting ears (241), and the third connecting ears (141) and the fourth connecting ears (241) are connected through a second fastener (40).

5. The high pressure wellhead rotary control device backup as claimed in claim 4, wherein, The first fastener (30) and the second fastener (40) both comprise fastening bolts.

6. The high pressure wellhead rotary control assembly of claim 4, wherein, An upper surface of the first mounting plate (14) is provided with a plurality of first lifting lugs (142), and an upper surface of the second mounting plate (24) is provided with a plurality of second lifting lugs (242).

7. The turntable compensator for high pressure wellheads according to claim 4, characterized in that, The high-pressure wellhead rotary disc compensating head comprises a plurality of first outer support plates (15) and a plurality of second outer support plates (25), the first outer support plates (15) are connected with the outer wall surface of the first half-cylinder (10) and the lower surface of the first mounting plate (14), and the second outer support plates (25) are connected with the outer wall surface of the second half-cylinder (20) and the lower surface of the second mounting plate (24).

8. The turntable compensator for high pressure wellheads according to claim 1, characterized in that, The lower surface of the first bearing plate (11) is provided with a plurality of third lifting lugs (112), and the lower surface of the second bearing plate (21) is provided with a plurality of fourth lifting lugs (212).

9. The turntable compensator for high pressure wellheads according to claim 1, characterized in that, The second half-ring (22) is arranged in a spaced manner with the inner wall surface of the second half-cylinder (20).

10. The turntable compensator for high pressure wellheads according to claim 1, characterized in that, The second half-ring (22) comprises a first half-ring portion (221), the length direction of the first half-ring portion (221) is provided with a first connecting portion (222) and a second connecting portion (223) at two ends respectively, and the first connecting portion (222) and the second connecting portion (223) are respectively detachably connected with the two ends of the first half-ring (12).

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