CN217327222U

CN217327222U - Auxiliary device for installing casing head

Info

Publication number: CN217327222U
Application number: CN202220463718.4U
Authority: CN
Inventors: 姚志刚; 杨则云; 李金洪; 周在翔; 王丰君; 常灵
Original assignee: China Petroleum and Chemical Corp
Current assignee: China Petroleum and Chemical Corp
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-08-30
Anticipated expiration: 2032-03-04

Abstract

The utility model relates to a well head operation appurtenance technical field, concretely relates to casing head installation auxiliary device, including fixing the fixing base on the casing head flange, be equipped with the connecting hole with casing head flange releasable connection on the fixing base, it has the top that is used for rightting the sleeve pipe to go back threaded connection on the fixing base and pushes away the screw rod, and the first end that pushes away the screw rod is equipped with twists the structure soon, and the second end normal running fit that pushes away the screw rod installs the gyro wheel support, installs the gyro wheel that is used for with sleeve pipe surface rolling contact through the roller shaft on the gyro wheel support, and the rotation axis level of gyro wheel extends during the use. When the pushing screw is rotated by the screwing structure, the force of the pushing screw can be transmitted to the roller bracket to drive the roller bracket to move forwards, and the roller bracket cannot rotate; meanwhile, as the roller is in rolling contact with the surface of the sleeve, the friction force is greatly reduced, the pushing screw rod is convenient to rotate, the labor intensity is reduced, the scratch on the surface of the sleeve is greatly reduced, and the subsequent use performance of the sleeve is ensured.

Description

Auxiliary device for installing casing head

Technical Field

The utility model relates to a well head operation appurtenance technical field, concretely relates to auxiliary device who uses when casing head changes installation.

Background

The casing head is a wellhead device part which is arranged at the upper end of a surface casing string and used for suspending each layer of casing outside the surface casing and sealing the annular space of the casing, is a casing head and a root of a gas production tree, is a more critical part in a well, and has the direct influence on the safety production of the well due to the material grade, the compressive strength, the corrosion resistance and the quality of the casing head.

In the gas storage construction, old well leakproofness can not satisfy the gas storage well requirement, the well head has corroded seriously, intensity greatly reduced, and its design, installation and pressure testing are all gone on according to the development well standard, no matter be pressure grade, the material level, the installation, the pressure testing can not reach the standard of gas storage well, and the size is also inconsistent, can't be connected with the gas production tree, so the gas storage utilizes the casing head of well no matter from the safety requirement or the installation requirement must be changed, change into with the technical parameter of notes production well operating mode assorted specification, just can guarantee safe production.

However, the phenomenon that the oil casing is not centered can occur in the casing head replacement process, so that the oil casing sealing device cannot be installed, the construction is blocked, and the site work is lost. In contrast, patent document No. CN2032648U discloses a wellhead casing centering device, which includes a semicircular upper flange, a semicircular lower flange, a support rod, a nut, and a centripetal jacking screw rod, wherein the semicircular upper flange and the semicircular lower flange are connected through the support rod, the semicircular lower flange is provided with a threaded hole for being fixed on a casing head flange through a bolt, the nut is connected with the semicircular upper flange, and the centripetal jacking screw rod is in threaded connection with the nut. When the centering sleeve is used, the semicircular upper flange and the semicircular lower flange are aligned to the offset position of the sleeve, and the centripetal jacking force screw rod is rotated to push the sleeve to move towards the center, so that the sleeve is centered.

The righting device adopts the screw to directly push the casing pipe, and in the process that the casing pipe is inclined to be centered, the surface of the casing pipe and the screw relatively move to generate relatively large friction force, so that the rotating operation of the screw is very laborious, and the surface of the casing pipe is scratched to influence subsequent use performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a casing head installation auxiliary device to produce great frictional force and lead to the operation hard and the problem on fish tail sleeve pipe surface when pushing away the sleeve pipe among the solution prior art.

In order to achieve the above object, the utility model provides a casing head installation auxiliary device adopts following technical scheme:

the utility model provides a casing head installation auxiliary device, including being used for fixing the fixing base on the casing head flange, be provided with on the fixing base be used for with casing head flange releasable connection's connecting hole, it is used for the top of rightting the sleeve pipe to go back threaded connection on the fixing base pushes away the screw rod, the first end that pushes away the screw rod is provided with and is used for rotatory top to push away the structure of revolving of screw rod, the second end normal running fit of top to push away the screw rod installs the gyro wheel support, install the gyro wheel that is used for with sleeve pipe surface rolling contact through the roller shaft on the gyro wheel support, the rotation axis level of gyro wheel extends during the use.

The beneficial effects of the above technical scheme are that: the second end of the pushing screw is provided with the roller bracket in a rotating and matching way, so that when the pushing screw is rotated through the screwing structure, the force of the pushing screw can be transmitted to the roller bracket to drive the roller bracket to move forwards, and the roller bracket can not rotate; the roller is arranged on the roller support through the roller shaft, the rotation axis of the roller horizontally extends when the roller is used, and the roller is in rolling contact with the surface of the sleeve, so that the friction force can be greatly reduced, the rotating pushing screw rod is convenient to rotate, the labor intensity is reduced, the scratch to the surface of the sleeve can be greatly reduced, and the subsequent use performance of the sleeve is ensured.

Furthermore, the fixing seat comprises a fixing plate and a vertical plate vertically connected with the fixing plate, the connecting hole is formed in the fixing plate, and the pushing screw is in threaded connection with the vertical plate.

The beneficial effects of the above technical scheme are that: the fixing seat is simple in structure and convenient to process and manufacture.

Further, the fixed plate is in a fan-shaped ring shape.

The beneficial effects of the above technical scheme are that: the shape of fan ring shape matches with the shape of casing head flange, conveniently fixes with the casing head flange to can not occupy too much space.

Furthermore, a reinforcing rib plate is welded and fixed between the fixed plate and the vertical plate.

The beneficial effects of the above technical scheme are that: the fixed connection effect between the fixed plate and the vertical plate is ensured.

Further, the roller support is U-shaped, the roller support comprises two side plates which are arranged in parallel at intervals and a connecting plate which is fixedly connected between the two side plates, the pushing screw rod is connected with the connecting plate in a rotating matching mode, the roller shaft is installed on the two side plates, and the roller is located between the two side plates.

The beneficial effects of the above technical scheme are that: the roller support is simple in structure, convenient to machine and manufacture and convenient to install the pushing screw and the roller shaft.

Furthermore, the pushing screw comprises a main screw thread section in threaded connection with the fixed seat and an auxiliary screw thread section arranged at the second end of the pushing screw, the diameter of the auxiliary screw thread section is smaller than that of the main screw thread section, and a first step surface is formed between the auxiliary screw thread section and the main screw thread section; a stepped through hole is formed in the connecting plate, the stepped through hole comprises a large hole section close to one side of the roller and a small hole section far away from one side of the roller, and a second step surface is formed between the large hole section and the small hole section; the auxiliary thread section penetrates through the small hole section and extends into the large hole section, a limiting nut is connected to the auxiliary thread section in a threaded mode, the limiting nut is located in the large hole section and used for being matched with the second step face in a blocking mode, and the first step face is used for being matched with the outer side face of the connecting plate in a blocking mode.

The beneficial effects of the above technical scheme are that: the pushing screw comprises a main thread section and an auxiliary thread section to form a first step surface, and the first step surface is used for being in stop fit with the outer side surface of the connecting plate, so that the pushing screw can push the roller wheel bracket to move forwards conveniently; the stepped through hole in the connecting plate comprises a large hole section, a small hole section and a second step surface, the auxiliary thread section penetrates through the small hole section and extends into the large hole section, the limiting nut is in threaded connection with the small hole section and is located in the large hole section, the limiting nut is prevented from protruding outwards to affect normal rotation of the roller, and meanwhile the limiting nut is used for being matched with the second step surface in a stop mode, so that the pushing screw can be limited from being separated from the roller support backwards, and the rotating matching connection between the pushing screw and the roller support is achieved.

Furthermore, the roller shaft is a bolt, the bolt penetrates through one of the two side plates and is in threaded connection with the other side plate, and the roller is sleeved outside the bolt.

The beneficial effects of the above technical scheme are that: the bolts are used as roller shafts, so that the roller is convenient to configure and process; the bolt penetrates through one of the two side plates and is in threaded connection with the other side plate, so that the installation and the disassembly are convenient; the roller sleeve is arranged outside the bolt, the structure is simple, and the assembly of the roller is convenient.

Furthermore, the roller is in a shape with two large ends and a small middle.

The beneficial effects of the above technical scheme are that: the gyro wheel forms spacing cooperation through self structure and sleeve pipe, and it is better to right the effect.

Further, the connecting hole is a threaded hole.

The beneficial effects of the above technical scheme are that: the fixing seat and the sleeve head flange are convenient to fix.

Further, the screwing structure is an outer hexagon head.

The beneficial effects of the above technical scheme are that: simple structure, convenient manufacturing, convenient operation of twisting soon simultaneously.

Drawings

Fig. 1 is a plan view of an embodiment 1 of the casing head installation assisting device according to the present invention;

fig. 2 is a side view of embodiment 1 of the casing head installation aid of the present invention;

fig. 3 is a front view of embodiment 1 of the casing head installation assisting device according to the present invention;

fig. 4 is a bottom view of embodiment 1 of the casing head installation assisting device according to the present invention.

In the figure: 1. a side plate; 2. a connecting plate; 21. a macroporous section; 22. a small pore section; 3. a fixing plate; 31. connecting holes; 4. a vertical plate; 5. reinforcing rib plates; 6. pushing the screw rod; 61. a main thread segment; 62. a secondary thread segment; 63. an outer hexagonal head; 7. a limit nut; 8. a bolt; 9. and a roller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …," or the like, does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses well casing head installation auxiliary device's embodiment 1 is as shown in fig. 1, fig. 2, fig. 3 and fig. 4, including being used for fixing the fixing base on the casing head flange, in this embodiment, the fixing base includes fixed plate 3 and the riser 4 of being connected perpendicularly with fixed plate 3, be provided with on the fixed plate 3 be used for with casing head flange releasable connection's connecting hole 31, connecting hole 31 is equipped with two and is the screw hole, consequently directly utilizes the bolt to pass casing head flange and connecting hole 31 threaded connection, can realize fixing between fixing base and the casing head flange, easy to assemble.

As shown in fig. 1 and 4, the fixing plate 3 is in a fan-shaped ring shape, the shape of the fan-shaped ring is matched with that of the casing head flange, and the size of the ring where the fan-shaped ring is located is equal to that of the casing head flange, so that the fixing plate 3 and the casing head flange are conveniently fixed, and too much space is not occupied. In addition, as shown in fig. 1 and 2, two reinforcing rib plates 5 are welded and fixed between the fixed plate 3 and the vertical plate 4, so that the fixed connection effect between the fixed plate 3 and the vertical plate 4 is ensured.

The vertical plate 4 is in threaded connection with a pushing screw 6 for centering the casing, a screwing structure for rotating the pushing screw 6 is arranged at a first end of the pushing screw 6, and the screwing structure in the embodiment is an outer hexagonal head 63. The second end of the pushing screw rod 6 is provided with a roller bracket in a rotating fit manner, a roller 9 which is used for rolling contact with the surface of the sleeve is arranged on the roller bracket through a roller shaft, and the rotation axis of the roller 9 horizontally extends when the pushing screw rod is used. Specifically, the roller support is U-shaped, the roller support includes two parallel side plates 1 arranged at intervals and a connecting plate 2 fixedly connected between the two side plates 1, the roller shaft is a bolt 8, the bolt 8 penetrates through one of the two side plates 1 and is in threaded connection with the other side plate, the roller 9 is sleeved outside the bolt 8, and the roller 9 is located between the two side plates 1. Simultaneously, gyro wheel 9 is the shape that both ends are big, the centre is little for gyro wheel 9 forms spacing cooperation through self structure and sleeve pipe, and it is better to right the effect.

The jacking screw 6 is connected with the connecting plate 2 in a rotating fit manner, specifically, as shown in fig. 1, the jacking screw 6 comprises a main screw thread section 61 in threaded connection with the vertical plate 4 and an auxiliary screw thread section 62 arranged at the second end of the jacking screw 6, the diameter of the auxiliary screw thread section 62 is smaller than that of the main screw thread section 61, and a first step surface is formed between the auxiliary screw thread section 62 and the main screw thread section 61. The connecting plate 2 is provided with a step-shaped through hole, the step-shaped through hole comprises a large hole section 21 close to one side of the roller 9 and a small hole section 22 far away from one side of the roller 9, and a second step surface is formed between the large hole section 21 and the small hole section 22. The auxiliary thread section 62 penetrates through the small hole section 22 and extends into the large hole section 21, the limiting nut 7 is in threaded connection with the auxiliary thread section 62, the limiting nut 7 is located in the large hole section and is used for being matched with the second step surface in a blocking mode, the situation that the normal rotation of the roller 9 is influenced due to the fact that the limiting nut 7 protrudes out is avoided, and meanwhile the pushing screw 6 can be limited to be pulled out of the roller support backwards. The first step surface is used for being matched with the outer side surface of the connecting plate 2 in a blocking manner, so that the pushing screw 6 is convenient to push the roller bracket to move forwards, and meanwhile, the rotating matching connection between the pushing screw 6 and the roller bracket is realized.

The utility model discloses well casing head installation auxiliary device's theory of operation is:

when the device is used, the fixing plate 3 is installed and fixed on the sleeve head flange through the connecting hole 31 and is aligned with the offset position of the sleeve, then the outer hexagonal head 63 is utilized to rotate the pushing screw 6, the force of the pushing screw 6 can be transmitted to the roller bracket to drive the roller bracket to move forwards, and the roller bracket cannot rotate due to the fact that the roller bracket and the pushing screw 6 are in mutual rotation fit. The roller support drives the roller 9 to contact with the sleeve and pushes the sleeve to move so that the sleeve is placed in the middle, and the roller 9 is in rolling contact with the surface of the sleeve, so that friction force can be greatly reduced, the pushing screw 6 can be rotated conveniently, labor intensity is reduced, scratches on the surface of the sleeve can be greatly reduced, and subsequent use performance of the sleeve is guaranteed.

The utility model discloses well casing head installation auxiliary device's embodiment 2: unlike example 1, the screw structure was an internal hexagonal hole.

The utility model discloses well casing head installation auxiliary device's embodiment 3: different from the embodiment 1, the connecting hole is a smooth hole, and at the moment, a bolt needs to penetrate through the connecting hole and the sleeve head flange and then is in threaded connection with the nut, so that the fixing between the fixing seat and the sleeve head flange can be realized.

The utility model discloses well casing head installation auxiliary device's embodiment 4: unlike embodiment 1, the roller is a cylindrical roller having a constant diameter.

The utility model discloses well casing head installation auxiliary device's embodiment 5: unlike embodiment 1, the bolt as the roller shaft is directly inserted through both side plates and then coupled to the nut.

The utility model discloses well casing head installation auxiliary device's embodiment 6: different from the embodiment 1, the pin shaft is adopted as the roller shaft, the pin shaft penetrates through the two side plates, the roller is sleeved outside the pin shaft, and the two ends of the pin shaft are respectively provided with the elastic check rings so as to limit the pin shaft.

The utility model discloses well casing head installation auxiliary device's embodiment 7: different from the embodiment 1, the roller shaft is fixedly connected with the roller, and two ends of the roller shaft are respectively installed on the side plates through bearings, so that the rotation of the roller shaft and the roller is realized.

The utility model discloses well casing head installation auxiliary device's embodiment 8: different from the embodiment 1, the second end of the pushing screw is not provided with the secondary thread section but is provided with the polish rod section, the polish rod section is connected with the connecting plate in a rotating fit mode through a bearing, and the connecting plate is provided with a bearing mounting hole and is not provided with a stepped through hole.

The utility model discloses well casing head installation auxiliary device's embodiment 9: unlike embodiment 1, the roller holder is H-shaped.

The utility model discloses well casing head installation auxiliary device's embodiment 10: different from the embodiment 1, the reinforcing rib plate is not welded and fixed between the fixed plate and the vertical plate.

The utility model discloses well casing head installation auxiliary device's embodiment 11: unlike embodiment 1, the fixing plate has a rectangular shape.

The utility model discloses well casing head installation auxiliary device's embodiment 12: different from the embodiment 1, the fixing seat comprises an upper fixing plate, a lower fixing plate and a supporting rod fixedly connected between the upper fixing plate and the lower fixing plate, the lower fixing plate is used for being fixedly connected with the casing head flange, at least one nut is fixed on the upper fixing plate, and the pushing screw rod is in threaded connection with the nut.

The utility model discloses well casing head installation auxiliary device's embodiment 13: different from the embodiment 1, the fixing seat comprises a fixing plate and a nut fixed on the fixing plate, and the pushing screw rod is in threaded connection with the nut.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a casing head installation auxiliary device, is provided with connecting hole (31) that are used for with casing head flange releasable connection including being used for fixing the fixing base on the casing head flange on the fixing base, and it has top pushing screw (6) that are used for rightting the sleeve pipe still to have threaded connection on the fixing base, and the first end that top pushing screw (6) is provided with the structure of revolving soon that is used for rotatory top pushing screw (6), its characterized in that: the second end of the pushing screw rod (6) is provided with a roller bracket in a rotating fit mode, a roller (9) which is in rolling contact with the surface of the sleeve is arranged on the roller bracket through a roller shaft, and the rotating axis of the roller (9) horizontally extends in use.

2. The casing head installation aid of claim 1, wherein: the fixing seat comprises a fixing plate (3) and a vertical plate (4) vertically connected with the fixing plate (3), the connecting hole (31) is formed in the fixing plate (3), and the pushing screw rod (6) is in threaded connection with the vertical plate (4).

3. The casing head installation aid of claim 2, wherein: the fixing plate (3) is in a fan-shaped ring shape.

4. The casing head installation aid of claim 2, wherein: a reinforcing rib plate (5) is welded and fixed between the fixed plate (3) and the vertical plate (4).

5. The casing head installation assisting device according to any one of claims 1 to 4, wherein: the roller support is U-shaped, and the roller support includes curb plate (1) and the connecting plate (2) of fixed connection between two curb plates (1) of two parallel interval arrangements, and top pushing screw rod (6) are connected with connecting plate (2) normal running fit, the roller shaft is installed on two curb plates (1), and gyro wheel (9) are located between two curb plates (1).

6. The casing head installation aid of claim 5, wherein: the pushing screw (6) comprises a main thread section (61) in threaded connection with the fixed seat and an auxiliary thread section (62) arranged at the second end of the pushing screw (6), the diameter of the auxiliary thread section (62) is smaller than that of the main thread section (61), and a first step surface is formed between the auxiliary thread section (62) and the main thread section (61); a stepped through hole is formed in the connecting plate (2), the stepped through hole comprises a large hole section (21) close to one side of the roller (9) and a small hole section (22) far away from one side of the roller (9), and a second step surface is formed between the large hole section (21) and the small hole section (22); the auxiliary thread section (62) penetrates through the small hole section (22) and extends into the large hole section (21), a limiting nut (7) is in threaded connection with the auxiliary thread section (62), the limiting nut (7) is located in the large hole section (21) and used for being in stop fit with the second step surface, and the first step surface is used for being in stop fit with the outer side surface of the connecting plate (2).

7. The casing head installation aid of claim 6, wherein: the roller shaft is a bolt (8), the bolt (8) penetrates through one of the two side plates (1) and is in threaded connection with the other side plate, and the roller (9) is sleeved outside the bolt (8).

8. The casing head installation assisting device according to any one of claims 1 to 4, wherein: the roller (9) is in a shape with two large ends and a small middle.

9. The casing head installation assisting device according to any one of claims 1 to 4, wherein: the connecting hole (31) is a threaded hole.

10. The casing head installation assisting device according to any one of claims 1 to 4, wherein: the screwing structure is an outer hexagonal head (63).