Casing clamp device and drilling apparatus

Abstract

The present application relates to the technical field of drilling equipment, and discloses a casing clamping device and drilling equipment. The casing clamping device comprises a mounting bracket, a rotary clamping structure and a driving structure. The rotary clamping structure is mounted on the mounting bracket, and is used for clamping or releasing the casing. When the casing is clamped, the rotary clamping structure is also used for driving the casing to rotate around its own axis. The driving structure is mounted on the mounting bracket, and is used for detachable connection with a derrick, and is used for driving the rotary clamping structure through the mounting bracket, so as to drive the casing to reciprocate along its own axis. Through the cooperation of the rotary clamping structure and the driving structure, the casing can rotate around its own axis when moving along its own axis, so that the casing running operation and the drilling operation can be carried out synchronously, that is, the wellbore protection effect is achieved, and the time for running the casing after drilling and completion is saved, the casing running operation process is simplified, and the defect that the casing running operation process in the prior art is relatively complex is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling equipment, in particular to a casing clamping device and drilling equipment. BACKGROUND

[0002] The conventional drilling will generally carry out the casing operation after the one-opening and two-opening drilling is completed. During the operation process, there is a certain risk due to the complex downhole formation, especially the partial collapse of the well wall caused by the loose formation. The casing, such as seamless steel pipe, is generally lowered in advance to reinforce the orifice and prevent the basic formation from being washed away during the drilling fluid circulation. The casing lowering process is relatively complex. Therefore, how to simplify the casing operation process is an urgent problem to be solved in the industry. SUMMARY

[0003] The present application provides a casing clamping device and drilling equipment to solve the defect that the casing operation process in the prior art is relatively complex.

[0004] The present application provides a casing clamping device, comprising:

[0005] a mounting bracket;

[0006] a rotating clamping structure mounted on the mounting bracket; the rotating clamping structure is used for clamping or loosening the casing, and when the casing is clamped, the rotating clamping structure is also used for driving the casing to rotate around its own axis;

[0007] a driving structure mounted on the mounting bracket, the driving structure is used for detachable connection with a derrick, and is used for driving the rotating clamping structure through the mounting bracket, so as to drive the casing to reciprocate along its own axis.

[0008] According to the casing clamping device provided by the present application, the rotating clamping structure comprises:

[0009] a clamping component comprising a plurality of clamping assemblies; the clamping assemblies are connected with the mounting bracket; the plurality of clamping assemblies are arranged in a circumferential direction of the casing, and the plurality of clamping assemblies are used for clamping or loosening the casing;

[0010] a first rotating driving component mounted on the mounting bracket; the first rotating driving component is in circumferential limiting cooperation with the clamping assemblies, and the first rotating driving component is used for driving the casing to rotate around its own axis through the plurality of clamping assemblies.

[0011] According to the casing clamping device provided by the present application, the first rotating driving component comprises:

[0012] A core pipe is arranged outside the sleeve pipe and is in axial rotation cooperation with the mounting bracket around the sleeve pipe. A plurality of sliding holes are formed in the pipe wall of the core pipe. The plurality of sliding holes are arranged in a circumferential direction of the core pipe. The plurality of sliding holes correspond to the plurality of clamping assemblies one by one and are in circumferential positioning with the clamping assemblies.

[0013] A rotation driving assembly is installed in the mounting bracket and is connected with the core pipe. The rotation driving assembly drives the plurality of clamping assemblies to rotate the sleeve pipe through the core pipe.

[0014] According to the sleeve pipe clamping device provided by the application, the core pipe comprises:

[0015] A pipe body is arranged outside the sleeve pipe and is in axial rotation cooperation with the mounting bracket around the sleeve pipe.

[0016] Gear teeth are formed on the outside of the pipe body in the circumferential direction of the pipe body. The gear teeth are in meshing connection with the rotation driving assembly.

[0017] According to the sleeve pipe clamping device provided by the application, the clamping component further comprises:

[0018] A clamping driving assembly is connected with the plurality of clamping assemblies. The clamping driving assembly is used to press the clamping assemblies towards the sleeve pipe so that the plurality of clamping assemblies clamp the sleeve pipe.

[0019] According to the sleeve pipe clamping device provided by the application, the clamping assembly is in sliding cooperation with the sliding hole in the up-down direction. The side of the clamping assembly away from the sleeve pipe is an inclined surface. The clamping driving assembly comprises:

[0020] A first connecting piece is hingedly connected at one end with the mounting bracket and is hingedly connected at the other end with the clamping assembly.

[0021] A second connecting piece is arranged in the up-down direction. A sliding groove is formed in the side of the second connecting piece facing the clamping assembly. The groove bottom of the sliding groove is in contact with the inclined surface.

[0022] A clamping driving piece is hingedly connected at one end with the mounting bracket and is hingedly connected at the other end with the second connecting piece. The clamping driving piece is used to drive the second connecting piece and the clamping assembly to slide in the up-down direction.

[0023] According to the sleeve pipe clamping device provided by the application, the second connecting piece comprises:

[0024] A sleeve ring is arranged outside the clamping assembly and is used to rotate with the sleeve pipe along the axial direction of the sleeve pipe; a plurality of sliding grooves are arranged on the inner side of the sleeve ring and are arranged along the circumference of the sleeve ring, and the plurality of sliding grooves correspond to the plurality of clamping assemblies one by one.

[0025] According to the sleeve pipe clamping device provided in the application, the clamping assembly comprises:

[0026] A first clamping piece is connected with the mounting bracket;

[0027] A second clamping piece is arranged on the side of the first clamping piece facing the sleeve pipe and is detachably connected with the first clamping piece.

[0028] According to the sleeve pipe clamping device provided in the application, the clamping assembly further comprises:

[0029] A circumferential limiting piece is used to connect the first clamping piece and the second clamping piece;

[0030] Or / and;

[0031] An axial limiting piece is used to connect the first clamping piece and the second clamping piece.

[0032] The second aspect of the application provides a drilling device comprising the sleeve pipe clamping device according to any one of the above.

[0033] The sleeve pipe clamping device provided in the application can provide a mounting base for the rotating clamping structure and the driving structure by arranging the mounting bracket. When the sleeve pipe needs to be lowered, the driving structure is connected with the derrick. At this time, the rotating clamping structure mounted on the mounting bracket can be used to clamp and drive the sleeve pipe to rotate, and the driving structure mounted on the mounting bracket can be used to drive the rotating clamping structure to reciprocate along the axial direction of the sleeve pipe, so as to drive the sleeve pipe to reciprocate along the axial direction of the sleeve pipe and provide an upward lifting force and a downward feeding force. Through the cooperation of the rotating clamping structure and the driving structure, the sleeve pipe can rotate around the axial direction of the sleeve pipe when moving along the axial direction of the sleeve pipe, so that the sleeve pipe lowering operation and the drilling operation can be performed synchronously, the sleeve pipe does not need to be lowered in advance, the wellbore protection effect is achieved, the time for lowering the sleeve pipe after drilling and well completion is saved, the sleeve pipe lowering operation process is simplified, and the defect that the sleeve pipe lowering operation process is relatively complex in the prior art is solved.

[0034] The drilling device provided in the application comprises the sleeve pipe clamping device described above, and thus at least has the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to make the technical solutions in the present application or prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those ordinary skilled in the art without any creative effort based on these drawings.

[0036] Figure 1 is one of the structural schematic diagrams of the sleeve clamping device provided by the present application.

[0037] Figure 2 is the second structural schematic diagram of the sleeve clamping device provided by the present application.

[0038] Figure 3 is the third structural schematic diagram of the sleeve clamping device provided by the present application.

[0039] Figure 4 is the sectional structural schematic diagram of Figure 3 .

[0040] Figure 5 is the exploded structural entity of the sleeve clamping device provided by the present application.

[0041] Figure 6 is the structural schematic diagram of the second connecting piece of the sleeve clamping device provided by the present application.

[0042] Figure 7 is one of the structural schematic diagrams of the clamping assembly of the sleeve clamping device provided by the present application.

[0043] Figure 8 is the second structural schematic diagram of the clamping assembly of the sleeve clamping device provided by the present application.

[0044] Figure 9 is the third structural schematic diagram of the clamping assembly of the sleeve clamping device provided by the present application.

[0045] Reference signs:

[0046] 100, mounting bracket; 110, first mounting sleeve; 120, second mounting sleeve; 130, mounting plate;

[0047] 200, rotating clamping structure; 210, clamping component; 220, first rotating driving component; 211, clamping assembly; 212, clamping driving assembly; 221, core pipe; 222, rotating driving assembly; 223, pipe body; 224, gear tooth; 225, sliding hole; 2111, first clamping piece; 2112, second clamping piece; 2113, inclined surface; 2114, abutting portion; 2116, first groove; 2117, first protrusion; 2118, second groove; 2119, second protrusion; 2121, first connecting piece; 2122, second connecting piece; 2123, clamping driving piece; 2124, sliding groove; 2125, collar;

[0048] 300, driving structure;

[0049] 400, sleeve pipe;

[0050] 500, derrick; 510, hole board; 520, stand column. DETAILED DESCRIPTION

[0051] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0052] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0053] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; 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. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature is "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0056] The specific embodiments of the first aspect of the present application will be described below in combination with Figures 1 to 9 The sleeve clamping device provided by the present application will be described in detail.

[0057] As Figures 1 to 9 shown, the specific embodiments of the first aspect of the present application provide a sleeve clamping device. The sleeve clamping device comprises a mounting bracket 100, a rotating clamping structure 200 and a driving structure 300.

[0058] The rotating clamping structure 200 is mounted on the mounting bracket 100, and the rotating clamping structure 200 is used for clamping or loosening the sleeve 400. When the sleeve 400 is clamped, the rotating clamping structure 200 is also used to drive the sleeve 400 to rotate around its own axis. The driving structure 300 is mounted on the mounting bracket 100, and the driving structure 300 is used for detachable connection with the derrick 500, and is used for driving the rotating clamping structure 200 through the mounting bracket 100, so as to drive the sleeve 400 to reciprocate along its own axis.

[0059] In the embodiment, the mounting bracket 100 is arranged to provide a mounting base for the rotary clamping structure 200 and the driving structure 300. When the casing 400 needs to be lowered, the driving structure 300 is connected to the derrick 500. At this time, the rotary clamping structure 200 mounted on the mounting bracket 100 can clamp the casing 400 and drive the casing 400 to rotate. Then, the driving structure 300 mounted on the mounting bracket 100 drives the rotary clamping structure 200 to reciprocate along the axial direction of the casing 400, thereby driving the casing 400 to reciprocate along the axial direction of the casing 400 to provide the casing 400 with a lifting force in the upward direction and a feeding force in the downward direction. Through the cooperation of the rotary clamping structure 200 and the driving structure 300, the casing 400 can rotate around the axial direction of the casing 400 when moving along the axial direction of the casing 400, so that the casing 400 lowering operation and the drilling operation can be performed synchronously, and the casing 400 does not need to be lowered in advance. In this way, the casing 400 can play a role in protecting the wellbore, the time for lowering the casing 400 after drilling and well completion is saved, the casing 400 lowering operation process is simplified, and the defect that the casing 400 lowering operation process in the prior art is relatively complex is solved.

[0060] In addition, when the casing 400 does not need to be lowered, the driving structure 300 can be separated from the derrick, and the casing clamping device as a whole can be detached from the derrick to realize conventional drilling.

[0061] As shown in FIG. 2, Figures 3 to 6 In some embodiments, the rotary clamping structure 200 includes a clamping component 210 and a first rotary driving component 220. The clamping component 210 includes a plurality of clamping assemblies 211. The clamping assemblies 211 are connected to the mounting bracket 100. The plurality of clamping assemblies 211 are arranged along the circumferential direction of the casing 400 and are used to clamp or release the casing 400. The first rotary driving component 220 is mounted on the mounting bracket 100. The first rotary driving component 220 is in circumferential limiting cooperation with the clamping assemblies 211, and the first rotary driving component 220 is used to drive the casing 400 to rotate around the axial direction of the casing 400 through the plurality of clamping assemblies 211.

[0062] In the embodiment, the rotary clamping structure 200 is arranged along the circumferential direction of the casing 400 through the plurality of clamping assemblies 211, which can limit the degrees of freedom of the casing 400 in space, so that the casing 400 does not displace during clamping, thereby improving the stability and reliability of clamping. By adjusting the spacing and clamping force of the clamping assemblies 211, the rotary clamping structure 200 can adapt to casings 400 of different diameters, thereby improving the versatility and adaptability thereof. By arranging the first rotary driving component 220 in circumferential limiting cooperation with the clamping assemblies 211, the first rotary driving component 220 can drive the plurality of clamping assemblies 211 to rotate, thereby driving the casing clamped by the clamping assemblies 211 to rotate around the axial direction of the casing 400.

[0063] Further, the first rotating driving component 220 comprises a core pipe 221 and a rotating driving assembly 222. The core pipe 221 is arranged outside the casing pipe and is rotationally connected with the mounting bracket 100 around the casing pipe 400. The pipe wall of the core pipe 221 is provided with a plurality of sliding holes 225 which are arranged along the circumference of the core pipe 221 and correspond to the plurality of clamping assemblies 211 and limit the clamping assemblies 211 in the circumferential direction. The rotating driving assembly 222 is mounted on the mounting bracket 100 and is connected with the core pipe 221. The rotating driving assembly 222 drives the plurality of clamping assemblies 211 to rotate the casing pipe 400 through the core pipe 221.

[0064] In the embodiment, the core pipe 221 is arranged outside the casing pipe and is rotationally connected with the mounting bracket 100 around the casing pipe 400. This design makes the whole rotating driving component compact in structure and small in space occupation, which is beneficial to realize efficient transmission in limited space and improve the rotation stability and reliability of the casing pipe 400. The rotating driving assembly 222 is directly mounted on the mounting bracket 100 and is connected with the core pipe 221, and drives the plurality of clamping assemblies 211 to rotate the casing pipe 400 through the core pipe 221. This direct driving mode reduces the intermediate links in the transmission chain and improves the transmission efficiency. The pipe wall of the core pipe 221 is provided with a plurality of sliding holes 225 which are arranged along the circumference of the core pipe 221 and correspond to the plurality of clamping assemblies 211. This design not only limits the clamping assemblies 211 in the circumferential direction, but also ensures the stability of the clamping assemblies 211 during rotation. Due to the circumferential limiting connection between the sliding holes 225 and the clamping assemblies 211, the clamping assemblies 211 can maintain a relatively fixed position during rotation, thereby realizing stable clamping of the casing pipe 400.

[0065] Specifically, the mounting bracket 100 comprises a first mounting sleeve 110. The first mounting sleeve 110 is arranged outside the core pipe 221 and is rotationally connected with the core pipe 221 through a bearing. The first mounting sleeve 110 is further connected with a mounting plate 130 which is slidably connected with the stand column 520 of the derrick 500 along the axial direction of the casing pipe 400. When the driving structure 300 drives the rotating clamping structure 200 and the mounting bracket 100 to reciprocate along the axial direction of the casing pipe 400, the mounting plate 130 is slidably connected with the stand column 520, which can improve the stability and reliability of the casing pipe clamping device.

[0066] As Figure 3 and Figure 4As shown, further, the core tube 221 includes a tube body 223 and gear teeth 224. The tube body 223 is sleeved on the outside of the sleeve pipe and is in axial rotation cooperation with the mounting bracket 100 around the sleeve pipe 400. Along the circumference of the tube body 223, the gear teeth 224 are formed on the outside of the tube body 223 and are in meshing connection with the rotary drive assembly 222. The meshing connection of the gear teeth 224 and the rotary drive assembly 222 can achieve efficient transmission, reduce energy loss, and improve transmission efficiency. Due to the accuracy of gear transmission, the rotation angle and speed of the sleeve pipe 400 can be accurately controlled, meeting the high-precision processing requirements. The design of the core tube 221 makes the entire first rotary drive part 220 more compact in structure, reduces the occupied space, and is conducive to efficient transmission and clamping in limited space. The circumferential arrangement of the gear teeth 224 and the meshing connection with the rotary drive assembly 222 enhance the stability of the entire structure, making the sleeve pipe 400 more stable during rotation and reducing vibration and noise. By adjusting the number of teeth and the module of the gear teeth 224, different diameters and materials of the sleeve pipe can be adapted, improving the versatility and adaptability of the rotary clamping structure 200. The design of the gear teeth 224 makes the structure of the rotary drive part simpler and easier to maintain and maintain.

[0067] Further, the rotary drive assembly 222 includes a speed reducer.

[0068] In some embodiments, the rotary clamping structure 200 further includes a clamping jaw assembly and a second rotary drive part; the clamping jaw assembly includes two clamping jaws and a clamping jaw drive, the two clamping jaws are hinged, and the clamping jaw drive drives the two clamping jaws to close or expand. When the two clamping jaws are closed, a clamping jaw assembly with a receiving cavity in the middle is formed, and when the two clamping jaws are closed, the sleeve pipe 400 is clamped; when the two clamping jaws are expanded, the sleeve pipe 400 is released. The second rotary drive part is connected to the outside of the clamping jaw assembly for driving the sleeve pipe to rotate around its axis through the clamping jaw assembly.

[0069] Further, the second rotary drive part and the clamping jaw assembly are in meshing connection through a gear set to drive the clamping jaw assembly to rotate around the axis of the sleeve pipe 400.

[0070] In some embodiments, the clamping part 210 further includes a clamping drive assembly 212; the clamping drive assembly 212 is connected to the plurality of clamping assemblies 211; the clamping drive assembly 212 is used to press the clamping assemblies 211 towards the sleeve pipe 400, so that the plurality of clamping assemblies 211 clamp the sleeve pipe 400.

[0071] In this embodiment, the clamping force of the clamping assembly 211 on the sleeve 400 can be precisely controlled by the clamping driving assembly 212. By adjusting the output force of the clamping driving assembly 212, precise adjustment of the clamping force can be achieved, ensuring that the sleeve 400 neither falls off due to insufficient clamping force nor is damaged due to excessive clamping force during the clamping process. The cooperation of the clamping driving assembly 212 and the plurality of clamping assemblies 211 makes the clamping process more stable and reliable. The plurality of clamping assemblies 211 simultaneously clamp the sleeve 400, which can disperse the clamping force and reduce the deformation of the sleeve 400 during the clamping process, thereby improving the stability and reliability of clamping.

[0072] In addition, the clamping driving assembly 212 can also be connected with an automatic control system, which can realize remote control and programming control. This makes the entire clamping process more intelligent and automated, reducing the complexity and risk of manual operation.

[0073] As shown in Figures 3 to 6 Further, the side of the clamping assembly 211 away from the sleeve 400 is an inclined surface 2113; the clamping driving assembly 212 includes a first connecting piece 2121, a second connecting piece 2122 and a clamping driving piece 2123. The first connecting piece 2121 is hinged at one end to the mounting bracket 100 and at the other end to the clamping assembly 211. Along the up-down direction, a sliding groove 2124 is formed on the side of the second connecting piece 2122 facing the clamping assembly 211, and the groove bottom of the sliding groove 2124 is in contact with the inclined surface 2113. The clamping driving piece 2123 is hinged at one end to the mounting bracket 100 and at the other end to the second connecting piece 2122, and is used to drive the second connecting piece 2122 and the clamping assembly 211 to slide along the up-down direction, so as to press the clamping assembly 211 towards the sleeve 400.

[0074] In this embodiment, the design of the inclined surface 2113 enables the clamping assembly 211 to gradually approach the sleeve 400 along the inclined surface 2113 when subjected to the driving force of the clamping driving piece 2123, thereby achieving effective transmission of the clamping force. This design avoids sudden increase or decrease of the clamping force during transmission, ensuring the stability and uniformity of the clamping force. The groove bottom of the sliding groove 2124 is in contact with the inclined surface 2113, which ensures the stability and reliability of the clamping assembly 211 during movement. The inclined surface 2113 can guide the clamping assembly 211 to move along a predetermined path, avoiding shaking or deviation of the clamping assembly 211 during movement. The first connecting piece 2121 and the second connecting piece 2122 are respectively hinged to the mounting bracket 100 and the clamping assembly 211, which allows the clamping assembly 211 to maintain a certain flexibility during clamping to adapt to changes in shape and size of the sleeve 400. At the same time, the hinged connection can reduce friction and wear during clamping, prolonging the service life of the clamping assembly 211.

[0075] Specifically, the clamping assembly 211 is in sliding cooperation with the sliding hole 225 in the up-down direction. The design of the sliding hole 225 can provide the clamping assembly 211 with a displacement amount in the up-down direction, ensuring that the clamping assembly 211 can move up and down under the action of the clamping driving member 2123 to clamp or loosen the sleeve 400.

[0076] Preferably, the clamping driving member 2123 can be a tension cylinder, an electric push rod, or a pneumatic cylinder.

[0077] Illustratively, the number of second connecting members 2122 can be multiple, and the clamping driving member 2123 can drive multiple second connecting members 2122 to move synchronously, ensuring that the clamping assembly 211 exerts the same force on the sleeve 400, avoiding the problem of deformation of the sleeve 400 during clamping.

[0078] As shown in Figure 6 Illustratively, the second connecting member 2122 includes a sleeve ring 2125; the sleeve ring 2125 is sleeved on the outside of the clamping assembly 211 and is circumferentially limited with the clamping assembly 211; the inner side of the sleeve ring 2125 is provided with multiple sliding grooves 2124, and the multiple sliding grooves 2124 are arranged at intervals along the circumference of the sleeve ring 2125, and the multiple sliding grooves 2124 correspond one-to-one to the multiple clamping assemblies 211.

[0079] In this embodiment, the sleeve ring 2125 is in circumferential limiting cooperation with the clamping assembly 211, ensuring that the clamping assembly 211 does not move or deviate in the circumferential direction when clamping the sleeve 400. This stability is crucial for maintaining uniform distribution of clamping force and preventing damage to the sleeve 400 during clamping. The design of the sleeve ring 2125 increases the overall rigidity of the clamping system, enabling the clamping assembly 211 to better resist deformation when subjected to external forces, thereby maintaining the stability and reliability of the clamping force. The multiple sliding grooves 2124 on the inner side of the sleeve ring 2125 correspond one-to-one to the multiple clamping assemblies 211, and this design enables the clamping assembly 211 to move along the trajectory of the sliding groove 2124 during movement, avoiding deviation or shaking of the clamping assembly 211. The guiding effect of the sliding groove 2124 enhances the stability and reliability of the clamping process. Since the sliding groove 2124 corresponds one-to-one to the clamping assembly 211, multiple clamping assemblies 211 can simultaneously act on the sleeve 400, achieving uniform distribution of clamping force. This uniform distribution of clamping force helps to reduce deformation and damage to the sleeve 400 during clamping.

[0080] Preferably, the sleeve ring 2125 is a tapered ring sleeve. The diameter of the tapered ring sleeve gradually decreases in the direction from top to bottom.

[0081] Preferably, the number of clamping driving members 2123 can be multiple, and the multiple clamping driving members 2123 are arranged at intervals along the circumference of the collar 2125, which can improve the stability of the upward and downward movement of the collar 2125.

[0082] As shown in Figure 3 and Figure 4 Preferably, the mounting bracket 100 further comprises a second mounting sleeve 120, which is sleeved on the outside of the core pipe 221 and rotationally matched with the core pipe 221 through a bearing. The lower side of the collar 2125 abuts against or separates from the upper side of the second mounting sleeve 120. When the clamping driving member 2123 drives the collar 2125 to move upward to press the clamping assembly 211 against the sleeve pipe, the lower side of the collar 2125 separates from the upper side of the second mounting sleeve 120. When the clamping driving member 2123 drives the collar 2125 to move downward, the extrusion force of the collar 2125 on the clamping assembly 211 gradually decreases, and when the lower side of the collar 2125 abuts against the upper side of the second mounting sleeve 120, the clamping assembly 211 releases the sleeve pipe.

[0083] As shown in Figure 4 、 Figures 7 to 9 In some embodiments, the clamping assembly 211 comprises a first clamping member 2111 and a second clamping member 2112. The first clamping member 2111 is connected with the mounting bracket 100. The second clamping member 2112 is installed on the side of the first clamping member 2111 facing the sleeve pipe 400 and detachably connected with the first clamping member 2111.

[0084] In the present embodiment, by arranging the second clamping member 2112 detachably connected with the first clamping member 2111, the clamping assembly 211 can clamp sleeve pipes of different diameters. For example, when it is necessary to clamp a sleeve pipe with a large diameter, the second clamping member 2112 is detached from the first clamping member 2111. When it is necessary to clamp a sleeve pipe with a small diameter, the second clamping member 2112 is connected with the first clamping member 2111.

[0085] Specifically, the side of the first clamping member 2111 away from the sleeve pipe 400 is an inclined surface 2113. The first clamping member 2111 is located in the sliding groove 2124 of the second connecting member 2122, the inclined surface 2113 is in contact with the groove bottom of the sliding groove 2124, and the second connecting member 2122 can slide along the sliding groove 2124.

[0086] Further, the clamping assembly 211 further comprises a circumferential limiting member or / and an axial limiting member; the first clamping member 2111 and the second clamping member 2112 are connected through the circumferential limiting member. The first clamping member 2111 and the second clamping member 2112 are connected through the axial limiting member. In this embodiment, by arranging the circumferential limiting member, the circumferential limiting member can ensure the relative position stability of the first clamping member 2111 and the second clamping member 2112 in the circumferential direction (i.e. the direction around the axis of the sleeve 400). This helps to prevent the clamping assembly 211 from circumferential deviation when rotating or under stress, thereby ensuring the accuracy and reliability of clamping. The axial limiting member can ensure the relative position stability of the clamping assembly 211 in the axial direction (i.e. the direction along the axis of the sleeve 400). This helps to prevent the clamping assembly 211 from axial movement when under stress, thereby ensuring the firmness and safety of clamping. Through the precise design and manufacture of the circumferential limiting member, higher accuracy can be achieved when the clamping assembly 211 clamps the sleeve 400. This helps to reduce errors and deviations caused by inaccurate clamping, and improves the quality and consistency of the product. Through the arrangement of the axial limiting member, the clamping strength of the clamping assembly 211 on the sleeve 400 can be further enhanced. This helps to resist the influence of external force or vibration on the clamping assembly 211, and ensures the stability and reliability of clamping. The combination of the circumferential limiting member and the axial limiting member can significantly improve the overall performance of the clamping assembly 211. This includes improving clamping accuracy, enhancing stability, optimizing structural layout, etc.

[0087] For example, the circumferential limiting member comprises a first groove 2116 and a first protrusion 2117; the first protrusion 2117 is assembled in the first groove 2116 in a direction perpendicular to the outer side surface of the sleeve, and cooperates with the second groove 2118 to limit the circumferential direction of the sleeve. One of the first groove 2116 or the first protrusion 2117 is formed on the side of the first clamping member 2111 facing the sleeve, and the other is formed on the side of the second clamping member 2112 away from the sleeve. Through the cooperation of the groove and the protrusion, the structure is simple and easy to assemble.

[0088] For example, the axial limiting member comprises a second groove 2118 and a second protrusion 2119; the second protrusion 2119 is assembled in the second groove 2118 in a direction perpendicular to the outer side surface of the sleeve, and cooperates with the second groove 2118 to limit the axial direction of the sleeve. One of the second groove 2118 or the second protrusion 2119 is formed on the side of the first clamping member 2111 facing the sleeve, and the other is formed on the side of the second clamping member 2112 away from the sleeve. Through the cooperation of the groove and the protrusion, the structure is simple and easy to assemble.

[0089] Specifically, the first clamping member 2111 and the second clamping member 2112 are assembled through screw threads. Through the arrangement of the circumferential limiting member and the axial limiting member, the number of screws used can be reduced.

[0090] Specifically, the second clamping piece 2112 is provided with a mounting groove on the side surface facing the casing, and the abutting portion 2114 is mounted in the mounting groove, and the abutting portion 2114 is detachably connected with the second clamping piece 2112; the side surface of the abutting portion 2114 facing the casing abuts against the outer side surface of the casing. By arranging the abutting portion 2114, the replacement frequency of the second clamping piece 2112 can be reduced by replacing the abutting portion 2114, and the cost is reduced.

[0091] Preferably, the side surface of the abutting portion 2114 facing the casing has a rough area, and the rough area abuts against the outer side surface of the casing.

[0092] In some embodiments, the driving structure 300 includes a lifting oil cylinder. The lifting oil cylinder is connected with the mounting bracket 100, and the lower end of the lifting oil cylinder is detachably connected with the aperture plate 510 of the derrick. When the casing clamping device is not needed, the lifting oil cylinder is detached from the aperture plate 510.

[0093] The specific embodiments of the second aspect of the present application provide a drilling equipment. The drilling equipment includes the casing clamping device of any of the above embodiments.

[0094] The drilling equipment of the present embodiment includes the casing clamping device of any of the above embodiments, and thus has at least the above advantages, which will not be repeated here.

[0095] Further, the drilling equipment includes a derrick 500; the stand 520 of the derrick 500 is in sliding fit with the mounting bracket 100 along the axial direction of the casing 400, further improving the stability of the upward and downward movement of the casing clamping device. The driving end of the driving structure 300 is detachably connected with the aperture plate 510 of the derrick 500, ensuring that the casing 400 operation and the drilling operation can be carried out synchronously, and the driving structure 300 and the aperture plate 510 can be connected according to actual needs, expanding the use range.

[0096] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sleeve clamping device, characterized by The utility model relates to a kind of drilling pipe handling device, including: Mounting bracket (100); Rotary clamping structure (200), is installed in the mounting bracket (100);The rotary clamping structure (200) is used to clamp or loosen the sleeve pipe (400), when clamping the sleeve pipe (400), the rotary clamping structure (200) is also used to drive the sleeve pipe (400) rotation around itself axial; Driving structure (300), is installed in the mounting bracket (100), the driving structure (300) is used to be detachably connected with derrick (500), for driving the rotary clamping structure (200) by the mounting bracket (100), so that the sleeve pipe (400) is driven along itself axial reciprocating motion; The rotary clamping structure (200) includes: Clamping component (210), including multiple clamping assemblies (211);The clamping assembly (211) is connected with the mounting bracket (100);Multiple clamping assemblies (211) are arranged along the circumference of the sleeve pipe (400), and multiple clamping assemblies (211) are used to clamp or loosen the sleeve pipe (400); First rotary drive component (220), is installed in the mounting bracket (100);The first rotary drive component (220) is circumferentially limited with the clamping assembly (211), and the first rotary drive component (220) is used to drive the sleeve pipe (400) rotation around itself axial by multiple clamping assemblies (211); The first rotary drive component (220) includes: Core pipe (221), for being set on the outside of the sleeve pipe (400), and being circumferentially rotatable with the mounting bracket (100) around the sleeve pipe (400);Multiple sliding holes (225) are formed in the pipe wall of the core pipe (221), multiple sliding holes (225) are arranged along the circumference of the core pipe (221), multiple sliding holes (225) are one-to-one corresponding with multiple clamping assemblies (211), and are circumferentially limited with the clamping assembly (211); Rotary drive assembly (222), is installed in the mounting bracket (100), and is connected with the core pipe (221);The rotary drive assembly (222) drives multiple clamping assemblies (211) to drive the sleeve pipe (400) to rotate by the core pipe (221); The core pipe (221) includes: Pipe body (223), is set on the outside of the sleeve pipe (400), and is circumferentially rotatable with the mounting bracket (100) around the sleeve pipe (400); Gear teeth (224), along the circumference of the pipe body (223), are formed on the outside of the pipe body (223), and the gear teeth (224) are engaged with the rotary drive assembly (222).

2. The sleeve clamping device of claim 1, wherein The clamping component (210) further includes: Clamping drive assembly (212), is connected with multiple clamping assemblies (211);The clamping drive assembly (212) is used to press the clamping assembly (211) to the sleeve pipe (400), so that multiple clamping assemblies (211) clamp the sleeve pipe (400).

3. The sleeve clamping device of claim 2, wherein, The clamping assembly (211) is inclined on a side away from the sleeve (400); the clamping driving assembly (212) comprises: a first connecting piece (2121) hingedly connected to the mounting bracket (100) at one end and to the clamping assembly (211) at the other end; a second connecting piece (2122) provided with a sliding groove (2124) on one side of the clamping assembly (211) in the up-down direction, the groove bottom of the sliding groove (2124) being in contact with the inclined surface (2113); a clamping driving piece (2123) hingedly connected to the mounting bracket (100) at one end and to the second connecting piece (2122) at the other end, for driving the second connecting piece (2122) and the clamping assembly (211) to slide in the up-down direction, so as to press the clamping assembly (211) towards the sleeve (400).

4. The sleeve clamping device of claim 3, wherein The second connecting piece (2122) comprises: a sleeve ring (2125) sleeved on the outside of the clamping assembly (211) and in circumferential limiting cooperation with the clamping assembly (211); the inner side of the sleeve ring (2125) is provided with a plurality of sliding grooves (2124), the plurality of sliding grooves (2124) being arranged at intervals in the circumferential direction of the sleeve ring (2125) and corresponding to the plurality of clamping assemblies (211) one by one.

5. The sleeve-gripping device according to any one of claims 1 to 4, characterized in that The clamping assembly (211) comprises: a first clamping piece (2111) connected to the mounting bracket (100); a second clamping piece (2112) mounted on the side of the first clamping piece (2111) facing the sleeve (400) and detachably connected to the first clamping piece (2111).

6. The sleeve clamping device of claim 5, wherein, The clamping assembly (211) further comprises: a circumferential limiting piece connecting the first clamping piece (2111) and the second clamping piece (2112); or / and; an axial limiting piece connecting the first clamping piece (2111) and the second clamping piece (2112).

7. A drilling apparatus, characterized by The sleeve clamping device comprises the sleeve clamping device according to any one of claims 1 to 6.

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