Casing running grouting pressurizing device

Abstract

The utility model relates to the technical field of casing running, in particular to a casing running grouting pressurizing device which comprises a protection pipe sleeve, and connecting threads are arranged on the outer walls of the two ends of the protection pipe sleeve respectively. Through the structure of the connecting sleeve and the connecting inserting sleeve which are convenient to connect, pressure borne between the connecting positions of pipelines can be conveniently transmitted into the protective pipe sleeve, the connecting sleeve and the connecting inserting sleeve through the buffer limiting block, and the situation that high pressure affects connection of the sleeve is avoided; and internal air can be extruded to the outside in the grouting process through the pressurizing grooves communicated in the protective pipe sleeve, the situation that other tools are used for releasing air is reduced, the economical efficiency is saved, the operation difficulty is reduced, and the grouting efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casing installation, in particular to a casing installation grouting pressure device. Background Art

[0002] Casing running is a routine operation in drilling engineering. It is the operation of lowering large diameter casing to the predetermined depth of the open hole according to the design. It is a reliable and effective measure to prevent in-hole accidents such as hole wall collapse and flushing fluid leakage.

[0003] The existing casing technology generally inserts the casings into the borehole one by one, connects them to form a complete pipeline, and then injects concrete or other fillers between the outer wall of the pipeline and the borehole to perform grouting operations to protect the casing. However, the existing technology has a relatively weak pipe connection. When squeezing into the borehole, a high-strength and complex connection structure is required to fix the pipe sleeve, which is time-consuming and labor-intensive, and the casing connection efficiency is relatively low. To this end, we propose a casing grouting pressurization device. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a casing grouting pressure device.

[0005] The technical solution adopted by the utility model to solve the technical problem is a casing grouting pressure device, comprising a protective sleeve, the outer walls of both ends of the protective sleeve are respectively provided with connecting threads, the top end of the protective sleeve is threadedly connected with a connecting sleeve, the inner wall of the connecting sleeve is provided with a connecting internal thread, and the outer periphery of the connecting sleeve is provided with a plurality of equidistant and evenly distributed connecting grooves;

[0006] A plurality of positioning blocks are fixedly connected to the inner wall of the protective sleeve, one end of the positioning block away from the inner wall of the protective sleeve is fixedly connected to a buffer limit block, a sleeve is inserted through the interior of the protective sleeve, and a pressure groove for grouting is provided between the protective sleeve and the sleeve on both sides of the positioning block and the buffer limit block.

[0007] By adopting the above technical scheme, the pressure between the joints of the pipelines can be easily transferred to the protective sleeve, the connecting sleeve and the connecting plug sleeve through the buffer limit block through the convenient connecting connecting sleeve and the connecting plug sleeve structure, so as to avoid the high pressure from affecting the connection of the sleeve, and the internal air can be squeezed to the outside during the grouting process through the pressurized grooves connected between the protective sleeves, thereby reducing the need to release the air with other tools, saving money and reducing the difficulty of operation, and effectively improving the grouting efficiency.

[0008] Specifically, a clamping limit leg is spliced ​​in the groove of the connecting groove, and the clamping limit leg is fixedly connected to the bottom end of the connecting plug sleeve.

[0009] By adopting the above technical solution, the limiting legs are used to engage with the connecting sleeve to limit and initially fix it.

[0010] Specifically, the inner walls of the connecting plug sleeve and the connecting sleeve are both provided with connecting internal threads for installation at both ends of the protective pipe sleeve.

[0011] By adopting the above technical solution, the connecting pipe, the connecting plug sleeve and the protective pipe sleeve are connected by connecting the internal threads.

[0012] Specifically, the outer periphery of the connecting plug sleeve is threadedly connected with a threaded fixing sleeve for tightening and fixing the clamping limit support leg clamped in the connecting groove.

[0013] By adopting the above technical solution, the threaded fixing sleeve is rotated and moved to the outer periphery of the clamping limit support leg to limit the clamping limit support leg, thereby fixing the connection plug sleeve and the connecting sleeve.

[0014] Specifically, the surfaces of the clamping limit support leg and the threaded fixing sleeve are both provided with fixing holes for auxiliary fixing.

[0015] By adopting the above technical solution, the auxiliary fixing piece is screwed into the fixing hole to fix the threaded fixing sleeve and the clamping limit support foot.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The technical solution of the present application is convenient for splicing the protective sleeves with the protective sleeves, and the sleeves with the sleeves, and then connecting and fixing them through the structural design of the protective sleeves, the connecting sleeves, the connecting grooves, the connecting plug sleeves, the clamping limit support feet, the positioning blocks, the buffer limit blocks, the pressurizing grooves and the threaded fixing sleeves, so as to facilitate the rapid splicing of the sleeves during the process of lowering the sleeves and grouting, improve the efficiency of lowering the sleeves, and fix the verticality of the sleeves through the built-in buffer limit mechanism and align them for pressure relief, thereby reducing the pressure received during lowering the sleeves and avoiding damage to the sleeves. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is an axonometric drawing of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the connecting sleeve and the connecting plug sleeve of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the protective sleeve and the connecting sleeve of the utility model;

[0022] In the figure: 1. Protective tube sleeve; 2. Connecting sleeve; 3. Connecting groove; 4. Connecting plug sleeve; 5. Card-connecting limit support foot; 6. Connecting internal thread; 7. Connecting thread; 8. Positioning block; 9. Buffer limit block; 10. Pressurizing groove; 11. Sleeve; 12. Threaded fixing sleeve; 13. Fixing hole. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] See also Figure 1-3 The embodiment of the utility model provides a technical solution: a casing 11 grouting pressure device, comprising a protective sleeve 1, the outer walls of both ends of the protective sleeve 1 are respectively provided with connecting threads 7, the top of the protective sleeve 1 is threadedly connected with a connecting sleeve 2, the inner wall of the connecting sleeve 2 is provided with a connecting internal thread 6, and the outer periphery of the connecting sleeve 2 is provided with a plurality of equidistant and evenly distributed connecting grooves 3;

[0025] The inner wall of the protective sleeve 1 is fixedly connected with a plurality of positioning blocks 8, one end of the positioning block 8 away from the inner wall of the protective sleeve 1 is fixedly connected with a buffer limit block 9, a sleeve 11 is inserted through the inside of the protective sleeve 1, and a pressurized groove 10 for grouting is provided between the protective sleeve 1 and the sleeve 11 on both sides of the positioning block 8 and the buffer limit block 9.

[0026] When in use, the pressure between the joints of the pipelines is conveniently transferred to the protective sleeve 1, the connecting sleeve 2 and the connecting plug sleeve 4 through the buffer limit block 9, so as to avoid high pressure affecting the connection of the sleeve 11, and the pressurized grooves 10 communicating with each other in the protective sleeve 1 can be used to squeeze the internal air to the outside during the grouting process, thereby reducing the need to release air with the help of other tools, saving money and reducing the difficulty of operation, and effectively improving the grouting efficiency.

[0027] As shown in the figure, a clamping limit leg 5 is spliced ​​in the groove of the connecting groove 3, and the clamping limit leg 5 is fixedly connected to the bottom end of the connecting plug sleeve 4.

[0028] When in use, the limiting legs are used to engage with the connecting sleeve 2 to limit and initially fix it.

[0029] As shown in the figure, the inner walls of the connecting plug sleeve 4 and the connecting sleeve 2 are both provided with connecting internal threads 6 for installation at both ends of the protective sleeve 1.

[0030] When in use, the connecting pipe and the connecting plug sleeve 4 are connected to the protective pipe sleeve 1 by connecting the internal thread 6 .

[0031] As shown in the figure, the outer periphery of the connecting plug sleeve 4 is threadedly connected with a threaded fixing sleeve 12 for tightening and fixing the clamping limit support leg 5 clamped in the connecting groove 3.

[0032] When in use, the threaded fixing sleeve 12 is rotated and moved to the outer periphery of the clamping and limiting support leg 5 to limit the clamping and limiting support leg 5 so as to fix the connecting sleeve 4 and the connecting sleeve 2 .

[0033] As shown in the figure, the surfaces of the clamping limit support leg 5 and the threaded fixing sleeve 12 are both provided with fixing holes 13 for auxiliary fixing.

[0034] When in use, the auxiliary fixing piece is screwed into the fixing hole 13 to fix the threaded fixing sleeve 12 and the clamping limit support leg 5 .

[0035] The working principle and use process of the utility model are as follows: in the process of casing, the casing 11 is first inserted into the interior of the protective tube sleeve 1, so that the buffer limit block 9 on the inner wall surface of the positioning block 8 abuts against the casing 11, and then extends into the borehole, and the casing 11 is spliced ​​with the second casing 11, and then the connecting internal thread 6 on the inner wall of the connecting sleeve 2 is aligned with the connecting thread 7 on the outer wall of the protective tube sleeve 1 and screwed in, so as to splice the protective tube sleeve 1, and the bottom thread of the second protective tube sleeve 1 is screwed into the connecting plug sleeve 4, and After aligning the clamping limit leg 5 fixed at the bottom end of the connecting plug sleeve 4 with the connecting groove 3 and inserting it, rotate the threaded fixing sleeve 12 to tighten the clamping limit leg 5, and screw the threaded part into the fixing hole 13 to fix the clamping limit leg 5 and the threaded fixing sleeve 12 to complete the splicing. After enough pipes are drawn in, grouting is performed into the pressurized groove 10 on one side, and concrete passes through the connecting sleeve 2 and the connecting plug sleeve 4 to cover the pressurized groove 10, and the air inside the pipe is discharged through the pressurized groove 10 on the other side.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A casing grouting pressure device, characterized in that: The protective sleeve (1) comprises a protective sleeve (1), the outer walls of both ends of the protective sleeve (1) are respectively provided with connecting threads (7), the top end of the protective sleeve (1) is threadedly connected to a connecting sleeve (2), the inner wall of the connecting sleeve (2) is provided with a connecting internal thread (6), and the outer periphery of the connecting sleeve (2) is provided with a plurality of equidistant and evenly distributed connecting grooves (3); The inner wall of the protective sleeve (1) is fixedly connected to a plurality of positioning blocks (8); one end of the positioning block (8) away from the inner wall of the protective sleeve (1) is fixedly connected to a buffer limit block (9); a sleeve (11) is inserted through the interior of the protective sleeve (1); and a pressure groove (10) for grouting is provided between the protective sleeve (1) and the sleeve (11) on both sides of the positioning block (8) and the buffer limit block (9).

2. The casing grouting pressure device according to claim 1, characterized in that: A clamping limit support leg (5) is spliced ​​in the groove of the connecting groove (3), and the clamping limit support leg (5) is fixedly connected to the bottom end of the connecting plug sleeve (4).

3. The casing grouting pressure device according to claim 2, characterized in that: The inner walls of the connecting plug sleeve (4) and the connecting sleeve (2) are both provided with connecting internal threads (6) for being installed at both ends of the protective pipe sleeve (1).

4. The casing grouting pressure device according to claim 2, characterized in that: The outer periphery of the connecting plug sleeve (4) is threadedly connected to a threaded fixing sleeve (12) for tightening and fixing the clamping limit support leg (5) clamped in the connecting groove (3).

5. The casing grouting pressure device according to claim 4, characterized in that: The surfaces of the clamping limit support leg (5) and the threaded fixing sleeve (12) are both provided with fixing holes (13) for auxiliary fixing.

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