CN210152605U

CN210152605U - Split type double-plug casing cement head

Info

Publication number: CN210152605U
Application number: CN201920767750.XU
Authority: CN
Inventors: 马胜利; 居建江; 张晖
Original assignee: CHANGSHU PETROLEUM CEMENTING TOOL CO LTD
Current assignee: CHANGSHU PETROLEUM CEMENTING TOOL CO LTD
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-03-17
Anticipated expiration: 2029-05-27

Abstract

The utility model belongs to the technical field of the cementing head technique and specifically relates to a split type double plug sleeve pipe cementing head, design a split type double plug sleeve pipe cementing head, including first connecting pipe, first connecting pipe is kept away from one of sealed lid and is served and be connected with the second connecting pipe through positioner, positioner includes the registration arm, the tip that sealed lid was kept away from to the coaxial fixed connection of registration arm at first connecting pipe, the second connecting pipe is close coaxial being equipped with first ring channel on the one end inner wall of first connecting pipe, but registration arm mating connection is in first ring channel, coaxial connection has the connecting cover on the outer wall of first connecting pipe, first connecting pipe is close the first limiting plate of coaxial fixedly connected with on one side outer wall of registration arm, coaxial fixedly connected with installation pipe on the one end outer wall that the second connecting pipe is close first connecting pipe. The utility model discloses not only make things convenient for the installation of plug, and improved the efficiency of installation, reduced the intensity of labour.

Description

Split type double-plug casing cement head

Technical Field

The utility model relates to a cementing head technical field especially relates to a split type double plug sleeve pipe cementing head.

Background

At present, in the drilling and development process of petroleum, the double-plug casing cement head used for well cementation and cement injection construction operation is integrated, the double-plug cement head mainly comprises a cement head cover, a rubber plug and a cement head body, and the cement head and the body are integrated, so that not only is the tool heavy and the carrying and well head installation operations inconvenient, but also the upper end of the cement head is required to be pressed in when the cement plug is loaded, the moving distance is too long when the cement plug reaches a preset position, the loading is very difficult, the labor intensity is high when the tool is used, the working efficiency is low, and the smooth implementation of well cementation construction is influenced. To this end, we propose a split double plug casing cementing head.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a split type double-plug casing cement head.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the design is a split type double-plug sleeve cement head, which comprises a first connecting pipe, wherein the top of the first connecting pipe is connected with a sealing cover, a first joint is vertically communicated and arranged on the side wall of the first connecting pipe, one end, far away from the sealing cover, of the first connecting pipe is connected with a second connecting pipe through a positioning device, a stop pin assembly and a second joint are respectively arranged on the outer wall of the second connecting pipe, one end of the second connecting pipe is provided with a third joint, the positioning device comprises a positioning pipe, the positioning pipe is coaxially and fixedly connected with the end part, far away from the sealing cover, of the first connecting pipe, the outer diameter of the positioning pipe is smaller than that of the first connecting pipe, a first annular groove is coaxially arranged on the inner wall, close to the first connecting pipe, of the second connecting pipe, the positioning pipe can be connected in the first annular groove in a matching manner, the utility model discloses a coaxial plug, including the connecting pipe, the connecting pipe is connected with the through-hole, first connecting pipe coaxial coupling is in the through-hole, the first limiting plate of coaxial fixedly connected with on the one side outer wall that first connecting pipe is close the registration arm, just the external diameter of first limiting plate is less than the internal diameter of connecting the lid, just the external diameter of first limiting plate is greater than the radius of through-hole, the second connecting pipe is close coaxial fixedly connected with installation pipe on the one end outer wall of first connecting pipe, be equipped with first screw thread on the installation pipe outer wall, be equipped with the second screw thread on the connecting lid inner wall, second screw thread and first screw thread accordant connection, the coaxial first plug that is equipped with in the first connecting pipe, the coaxial second plug that is equipped.

Preferably, the sealing cap is threadedly coupled to the top of the first connection pipe.

Preferably, the coaxial fixedly connected with annular plate of one end that first connecting pipe is close to the second connecting pipe, the one end that the second connecting pipe is close to first connecting pipe corresponds position department and is equipped with the third ring channel, the annular plate corresponds the connection in the third ring channel, just the coaxial rubber pad that is equipped with in the third ring channel.

Preferably, one end of the positioning pipe, which is far away from the first connecting pipe, is coaxially provided with a second annular groove, the outer diameter of the second annular groove is equal to the outer diameter of the positioning pipe, the inner diameter of the second annular groove is smaller than the inner diameter of the positioning pipe, an annular block is arranged at a position corresponding to the bottom of the first annular groove, the annular block can be correspondingly connected in the second annular groove, and the annular block is a rubber annular block.

The utility model provides a split type double plug sleeve pipe cement head, beneficial effect lies in: the utility model discloses threaded connection between the connection lid that sets up and the installation pipe has made things convenient for installation and dismantlement between first connecting pipe and the second connecting pipe, simultaneously under the combined action of third ring channel, annular slab and annular piece, second ring channel for the holistic leakproofness of device obtains very big improvement, has not only made things convenient for the installation of plug, and has improved the efficiency of installation, has reduced the intensity of labour, and is specific:

(1) when using, with first plug, the second plug is installed respectively at first connecting pipe, in the second connecting pipe, extend to the first ring channel at second connecting pipe top with the one end of first connecting pipe again, and through connecting the lid and installing carrying out threaded connection between the pipe, can be to first connecting pipe, carry out stable connection between the second connecting pipe, the third ring channel that sets up simultaneously, the annular piece has improved the holistic leakproofness of device, not only improved the efficiency of installation and saved a large amount of manpowers.

(2) Threaded connection between sealed lid and the first connecting pipe has not only made things convenient for installation and the dismantlement between sealed lid and the first connecting pipe, and has made things convenient for the installation of first plug in first connecting pipe.

(3) The sealing performance of connection between the first connecting pipe and the second connecting pipe is improved due to the matching connection between the annular plate and the third annular groove, and the overall sealing performance of the device is further improved under the action of the rubber pad.

(4) The annular block and the second annular groove are matched, so that the sealing performance of connection between the positioning pipe and the first annular groove is greatly improved, and the secondary sealing effect is achieved.

Drawings

Fig. 1 is the utility model provides a structural schematic diagram of split type double plug casing cementing head.

Fig. 2 is a structural cross-sectional view of a split double-plug casing cement head provided by the utility model.

Fig. 3 is the utility model provides a first connecting pipe and the first articulate cross-sectional view of split type double plug casing cementing head.

In the figure: the rubber plug sealing device comprises a first connecting pipe 1, a first joint 2, a first limiting plate 3, a connecting cover 4, a positioning pipe 5, a first thread 6, a stop pin assembly 7, a second connecting pipe 8, a second joint 9, a third joint 10, a first annular groove 11, a first rubber plug 12, an annular block 13, a through hole 14, a second thread 15, a second annular groove 16, a third annular groove 17, an annular plate 18, a mounting pipe 19, a second rubber plug 20 and a sealing cover 21.

Detailed Description

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

Referring to fig. 1-3, a split type double-plug casing pipe cement head comprises a first connecting pipe 1, a sealing cover 21 is connected to the top of the first connecting pipe 1, a first joint 2 is vertically communicated with the side wall of the first connecting pipe 1, one end of the first connecting pipe 1 far away from the sealing cover 21 is connected with a second connecting pipe 8 through a positioning device, a stop pin assembly 7 and a second joint 9 are respectively arranged on the outer wall of the second connecting pipe 8, one end of the second connecting pipe 8 is provided with a third joint 10, the positioning device comprises a positioning pipe 5, the positioning pipe 5 is coaxially and fixedly connected to the end portion of the first connecting pipe 1 far away from the sealing cover 21, the outer diameter of the positioning pipe 5 is smaller than that of the first connecting pipe 1, a first annular groove 11 is coaxially arranged on the inner wall of one end of the second connecting pipe 8 close to the first connecting pipe 1, the positioning pipe 5 can be connected in the first annular groove 11 in a, the connecting cover 4 is coaxially connected with a through hole 14, the first connecting pipe 1 is coaxially connected in the through hole 14, the outer wall of one side of the first connecting pipe 1, which is close to the positioning pipe 5, is coaxially and fixedly connected with a first limiting plate 3, the outer diameter of the first limiting plate 3 is smaller than the inner diameter of the connecting cover 4, the outer diameter of the first limiting plate 3 is larger than the radius of the through hole 14, the outer wall of one end of the second connecting pipe 8, which is close to the first connecting pipe 1, is coaxially and fixedly connected with a mounting pipe 19, the outer wall of the mounting pipe 19 is provided with a first thread 6, the inner wall of the connecting cover 4 is provided with a second thread 15, the second thread 15 is in matching connection with the first thread 6, the first rubber plug 12 is coaxially arranged in the first connecting pipe 1, the second rubber plug 20 is coaxially arranged in the second connecting pipe 8, the second connecting pipe 8 is connected with the first connecting pipe 1 through the connecting cover, thereby improving the efficiency of installation.

The utility model discloses threaded connection between the connection lid 4 that sets up and the installation pipe 19 has made things convenient for installation and dismantlement between first connecting pipe 1 and the second connecting pipe 8, simultaneously under the combined action of third ring channel 17, annular slab 18 and annular piece 13, second ring channel 16 for the holistic leakproofness of device obtains very big improvement, has not only made things convenient for the installation of plug, and has improved the efficiency of installation, has reduced the intensity of labour.

Specifically, when using, with first plug 12, second plug 20 is installed respectively in first connecting pipe 1, in the second connecting pipe 8, extend to the one end of first connecting pipe 1 again to the first ring channel 11 at 8 tops of second connecting pipe, and through connecting the threaded connection that carries out between lid 4 and the installation pipe 19, can be to first connecting pipe 1, carry out stable connection between the second connecting pipe 8, the third ring channel 17 that sets up simultaneously, annular piece 13 has improved the holistic leakproofness of device, not only improved the efficiency of installation and saved a large amount of manpowers.

Referring to fig. 1, further, a sealing cap 21 is threadedly coupled to the top of the first connecting pipe 1.

The threaded connection between the sealing cover 21 and the first connecting pipe 1 not only facilitates the installation and the disassembly between the sealing cover 21 and the first connecting pipe 1, but also facilitates the installation of the first rubber plug 12 in the first connecting pipe 1.

Referring to fig. 3, further, an annular plate 18 is coaxially and fixedly connected to one end of the first connecting pipe 1 close to the second connecting pipe 8, a third annular groove 17 is formed in a position corresponding to one end of the second connecting pipe 8 close to the first connecting pipe 1, the annular plate 18 is correspondingly connected in the third annular groove 17, and a rubber pad is coaxially arranged in the third annular groove 17.

The matching connection between the annular plate 18 and the third annular groove 17 improves the sealing performance of the connection between the first connecting pipe 1 and the second connecting pipe 8, and further improves the sealing performance of the whole device under the action of a rubber gasket.

Referring to fig. 3, further, a second annular groove 16 is coaxially disposed on an end of the positioning tube 5 away from the first connecting tube 1, an outer diameter of the second annular groove 16 is equal to an outer diameter of the positioning tube 5, an inner diameter of the second annular groove 16 is smaller than an inner diameter of the positioning tube 5, an annular block 13 is disposed at a corresponding position at the bottom of the first annular groove 11, the annular block 13 can be correspondingly connected in the second annular groove 16, and the annular block 13 is a rubber annular block.

The cooperation between the annular block 13 and the second annular groove 16 greatly improves the sealing performance of the connection between the positioning pipe 5 and the first annular groove 11, and plays a role of secondary sealing.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a split type double plug sleeve pipe cement head, includes first connecting pipe (1), first connecting pipe (1) top is connected with sealed lid (21), perpendicular intercommunication is equipped with first joint (2) on the lateral wall of first connecting pipe (1), a serial communication port, one of sealed lid (21) is kept away from in first connecting pipe (1) is served and is connected with second connecting pipe (8) through positioner, be equipped with fender round pin assembly (7), second joint (9) on the outer wall of second connecting pipe (8) respectively, the one end of second connecting pipe (8) is equipped with third joint (10), positioner includes registration arm (5), the tip of sealed lid (21) is kept away from in first connecting pipe (1) to registration arm (5) coaxial fixed connection, the external diameter of registration arm (5) is less than the external diameter of first connecting pipe (1), coaxial first ring channel groove that is equipped with on the one of second connecting pipe (8) is close to one inner wall of first connecting pipe (1) (11) The positioning pipe (5) can be connected in a first annular groove (11) in a matching manner, the outer wall of the first connecting pipe (1) is coaxially connected with a connecting cover (4), the connecting cover (4) is coaxially connected with a through hole (14), the first connecting pipe (1) is coaxially connected in the through hole (14), the first connecting pipe (1) is close to a first limiting plate (3) fixedly connected on the outer wall of one side of the positioning pipe (5), the outer diameter of the first limiting plate (3) is smaller than the inner diameter of the connecting cover (4), the outer diameter of the first limiting plate (3) is larger than the radius of the through hole (14), the second connecting pipe (8) is close to a mounting pipe (19) fixedly connected on the outer wall of one end of the first connecting pipe (1), a first thread (6) is arranged on the outer wall of the mounting pipe (19), a second thread (15) is arranged on the inner wall of the connecting cover (4), the second thread (15) is connected with the first thread (6) in a matching mode, a first rubber plug (12) is coaxially arranged in the first connecting pipe (1), and a second rubber plug (20) is coaxially arranged in the second connecting pipe (8).

2. The split double plug casing head according to claim 1, wherein the sealing cap (21) is threadedly coupled to the top of the first connecting pipe (1).

3. The split double-plug casing cement head according to claim 1, wherein an annular plate (18) is coaxially and fixedly connected to one end of the first connecting pipe (1) close to the second connecting pipe (8), a third annular groove (17) is formed in a corresponding position of one end of the second connecting pipe (8) close to the first connecting pipe (1), the annular plate (18) is correspondingly connected in the third annular groove (17), and a rubber pad is coaxially arranged in the third annular groove (17).

4. The split type double-plug casing pipe cement head as claimed in claim 1, wherein a second annular groove (16) is coaxially arranged on one end of the positioning pipe (5) far away from the first connecting pipe (1), the outer diameter of the second annular groove (16) is equal to the outer diameter of the positioning pipe (5), the inner diameter of the second annular groove (16) is smaller than the inner diameter of the positioning pipe (5), an annular block (13) is arranged at a position corresponding to the bottom of the first annular groove (11), the annular block (13) can be correspondingly connected in the second annular groove (16), and the annular block (13) is a rubber annular block.