B annulus cement injection packaging structure

Abstract

The utility model discloses a B annulus cement injection packaging structure, and relates to the technical field of B annulus cement injection, the structure comprises a surface layer sleeve, a left connecting sleeve and a right connecting sleeve, the surface of the surface layer sleeve is movably connected with the left connecting sleeve and the right connecting sleeve; and one side of the surface of the left connecting sleeve is provided with a cement injection and pipe feeding interface for ensuring that the cement injection pipe can be smoothly recycled and taken out. After the ash injection hole formed in the surface casing is in butt joint with the opening in the bottom of the ash injection and delivery pipe connector, the ash injection pipe is inserted into the ash injection hole through the ash injection and delivery pipe connector, so that the ash injection pipe smoothly enters a position 50-100 meters deep in an annular space of a wellhead B, and ash is injected into the surface casing and an oil-string casing through the ash injection pipe; and furthermore, the missing part of the annulus cement sheath within 50-100 meters can be accurately filled with the mortar, and the mortar injection pipe can be smoothly recycled and taken out through the arrangement of the mortar injection and delivery pipe interface, so that the effect of preventing the mortar injection pipe from being adhered to the inside of the oil-string casing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of B-ring empty ash injection, in particular to a B-ring empty ash injection packaging structure. Background Art

[0002] In the field of oil drilling, it is necessary to seal the B annulus by injecting ash, thereby sealing the fluid channels that are not needed during the drilling process. However, when the ash injection pipe is inserted into the oil layer casing for ash injection, the ash injection pipe may stick to the oil layer casing, making it impossible to smoothly recover and remove the ash injection pipe.

[0003] Based on this, a B-ring empty ash injection packaging structure is now provided to eliminate the disadvantages of the existing device. Utility Model Content

[0004] The utility model aims to provide a B-ring hollow ash injection packaging structure to solve the problem in the background art that the ash injection pipe may be stuck in the oil layer casing and the ash injection pipe cannot be smoothly recovered and taken out.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The B-annular hollow ash injection packaging structure includes a surface casing, a left connecting sleeve and a right connecting sleeve. The surface of the surface casing is movably connected with the left connecting sleeve and the right connecting sleeve. One side of the surface of the left connecting sleeve is provided with an ash injection delivery pipe interface for ensuring that the ash injection pipe can be smoothly recovered and removed.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: two ends of one side of the left connecting sleeve are fixedly connected with connecting blocks, two ends of one side of the right connecting sleeve are provided with connecting grooves, and the inner wall of the connecting groove is fixedly connected with a connecting block.

[0009] In an optional solution, the inner wall size of the connecting groove matches the outer wall size of the connecting block.

[0010] In an optional solution: a sealing strip is fixedly connected to one side of the connecting block.

[0011] In an optional solution: a first ring sleeve groove glue injection hole is opened on the top of the left connecting sleeve, and a second ring sleeve groove glue injection hole is opened on the top of the right connecting sleeve.

[0012] In an optional solution: a first fixing block is fixedly connected to the surface of the left connecting sleeve, and a second fixing block is fixedly connected to the surface of the right connecting sleeve. The first and second fixing blocks are internally threadedly connected with bolts, and one end of the bolt is threadedly connected with a nut.

[0013] In an optional solution: the surface casing is fixedly connected to the oil layer casing, a ash injection hole is opened on the bottom side of the surface casing, and a ash injection pipe interface is opened on the top side of the left connecting sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model connects the ash injection hole opened in the surface casing with the bottom opening of the ash injection pipe interface, and then inserts the ash injection pipe into the ash injection hole through the ash injection pipe interface, so that the ash injection pipe can smoothly enter the wellhead B annulus at a depth of 50 to 100 meters, and ash is injected into the surface casing and the oil layer casing through the ash injection pipe, so that the mortar can accurately fill the missing part of the cement ring in the annulus within 50 to 100 meters, and then the ash injection pipe interface is set so that the ash injection pipe can be smoothly recovered and taken out, thereby achieving the effect of preventing the ash injection pipe from sticking in the oil layer casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 The utility model is a schematic diagram of the matching structure of the bolt and the nut.

[0018] Figure 3 It is a schematic diagram of the matching structure of the left connecting sleeve and the right connecting sleeve of the utility model.

[0019] Figure 4 It is a schematic diagram of the structure of the right connecting sleeve and the glue injection hole of the second ring sleeve groove matching each other in the utility model.

[0020] Figure 5 It is a schematic diagram of the structure of the surface casing and the ash injection hole matching each other in the utility model.

[0021] Notes on figure numbers: 1. Surface casing; 2. Oil layer casing; 3. Left connecting sleeve; 4. Right connecting sleeve; 5. Connecting block; 6. Sealing strip; 7. Glue injection hole in the first ring sleeve groove; 8. Ash injection and pipe interface; 9. First fixing block; 10. Bolt; 11. Nut; 12. Connecting groove; 13. Glue injection hole in the second ring sleeve groove; 14. Second fixing block; 15. Ash injection hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] In one embodiment, Figure 1-Figure 5As shown, the B-ring empty ash injection packaging structure includes a surface casing 1, a left connecting sleeve 3 and a right connecting sleeve 4. The surface of the surface casing 1 is movably connected with the left connecting sleeve 3 and the right connecting sleeve 4. One side of the surface of the left connecting sleeve 3 is provided with an ash injection pipe delivery interface 8 for ensuring that the ash injection pipe can be smoothly recovered and removed. When the ash injection pipe is used up, it is convenient to smoothly recover and remove the ash injection pipe, so that the ash injection pipe will not stick to the oil layer casing 2.

[0024] In one embodiment, Figure 2 As shown, connecting blocks 5 are fixedly connected to both ends of one side of the left connecting sleeve 3, connecting grooves 12 are opened at both ends of one side of the right connecting sleeve 4, and the inner wall of the connecting groove 12 is fixedly connected to the connecting block 5, so that the left connecting sleeve 3 is inserted into the connecting groove 12 through the connecting block 5, thereby connecting the left connecting sleeve 3 and the right connecting sleeve 4 together.

[0025] In one embodiment, Figure 2 As shown, the inner wall size of the connecting groove 12 is consistent with the outer wall size of the connecting block 5. When the connecting block 5 slides inside the connecting groove 12, the connecting groove 12 can limit the sliding of the connecting block 5 to prevent the connecting block 5 from shaking inside the connecting groove 12.

[0026] In one embodiment, Figure 4 As shown, a sealing strip 6 is fixedly connected to one side of the connecting block 5 to increase the sealing between the left connecting sleeve 3 and the right connecting sleeve 4 .

[0027] In one embodiment, Figure 3 As shown, a first ring sleeve groove injection hole 7 is provided on the top of the left connecting sleeve 3, and a second ring sleeve groove injection hole 13 is provided on the top of the right connecting sleeve 4. The sealing agent is injected into the left connecting sleeve 3 and the right connecting sleeve 4 through the first ring sleeve groove injection hole 7 and the second ring sleeve groove injection hole 13, so that the left connecting sleeve 3 and the right connecting sleeve 4 are fixed on the surface casing 1, and then the high-pressure sealant is relied on to prevent the medium in the surface casing 1 from leaking and spilling on the ground, and the colloid can be kept in the left connecting sleeve 3 and the right connecting sleeve 4, thereby avoiding the cementing material spilling on the ground during the cementing process to cause environmental pollution.

[0028] In one embodiment, Figure 2 As shown, the surface of the left connecting sleeve 3 is fixedly connected with the first fixing block 9, and the surface of the right connecting sleeve 4 is fixedly connected with the second fixing block 14. The first fixing block 9 and the second fixing block 14 are internally threadedly connected with bolts 10, and one end of the bolt 10 is threadedly connected with a nut 11. The bolt 10 is inserted into the first fixing block 9 and the second fixing block 14, and the nut 11 is screwed to thread the bolt 10 and the nut 11, thereby fixing the left connecting sleeve 3 and the right connecting sleeve 4 together.

[0029] In one embodiment, Figure 5 As shown, the surface casing 1 is fixedly connected to the oil layer casing 2, a cement injection hole 15 is provided on the bottom side of the surface casing 1, and a cement injection pipe interface 8 is provided on the top side of the left connecting sleeve 3. The cement injection pipe is inserted into the cement injection hole 15 through the cement injection pipe interface 8, and cement is injected into the surface casing 1 and the oil layer casing 2 through the cement injection pipe, thereby ensuring that the mortar can accurately fill the missing parts of the cement ring in the surface casing 1 and the oil layer casing 2.

[0030] Working principle: The above embodiment discloses a B-ring empty ash injection packaging structure, wherein, when in use, the left connecting sleeve 3 and the right connecting sleeve 4 are sleeved on the surface casing 1, and the left connecting sleeve 3 is inserted into the connecting groove 12 through the connecting block 5, so that the left connecting sleeve 3 and the right connecting sleeve 4 are connected together, and then the bolt 10 is inserted into the first fixing block 9 and the second fixing block 14, and the nut 11 is screwed to make the bolt 10 and the nut 11 threadedly connected, so that the left connecting sleeve 3 and the right connecting sleeve 4 are fixed together, and the sealing injection is injected into the left connecting sleeve 3 and the right connecting sleeve 4 through the first ring sleeve groove injection hole 7 and the second ring sleeve groove injection hole 13, so that the left connecting sleeve 3 and the right connecting sleeve 4 are fixed on the surface casing 1, and then the surface is prevented from being damaged by the high-pressure sealant. After the medium in the casing 1 leaks and spills on the ground, the colloid can be kept in the left connecting sleeve 3 and the right connecting sleeve 4, avoiding the cementing material from spilling on the ground and causing environmental pollution during the cementing process. After the cement injection hole 15 opened in the surface casing 1 is connected with the bottom opening of the cement injection pipe interface 8, the cement injection pipe is inserted into the cement injection hole 15 through the cement injection pipe interface 8, so that the cement injection pipe can smoothly enter the annulus of wellhead B at a depth of 50 to 100 meters, and the surface casing 1 and the oil layer casing 2 are injected with cement through the cement injection pipe, so that the mortar can accurately fill the missing part of the cement ring in the annulus within 50 to 100 meters. The setting of the cement injection pipe interface 8 allows the cement injection pipe to be smoothly recovered and taken out, avoiding the cement injection pipe sticking to the oil layer casing 2 and affecting subsequent use.

[0031] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. B annular hollow cement injection packaging structure, comprising a surface casing (1), a left connecting sleeve (3) and a right connecting sleeve (4), wherein the surface of the surface casing (1) is movably connected with the left connecting sleeve (3) and the right connecting sleeve (4), and is characterized in that: One side of the surface of the left connecting sleeve (3) is provided with an ash injection pipe interface (8) for ensuring that the ash injection pipe can be smoothly recovered and taken out.

2. The B-ring empty ash injection packaging structure according to claim 1 is characterized in that: The two ends of one side of the left connecting sleeve (3) are fixedly connected to connecting blocks (5), and the two ends of one side of the right connecting sleeve (4) are provided with connecting grooves (12), and the inner wall of the connecting groove (12) is fixedly connected to the connecting block (5).

3. The B-ring empty ash injection packaging structure according to claim 2 is characterized in that: The inner wall size of the connecting groove (12) matches the outer wall size of the connecting block (5).

4. The B-ring empty ash injection packaging structure according to claim 2 is characterized in that: A sealing strip (6) is fixedly connected to one side of the connection block (5).

5. The B-ring empty ash injection packaging structure according to claim 1 is characterized in that: A first ring sleeve groove glue injection hole (7) is provided on the top of the left connecting sleeve (3), and a second ring sleeve groove glue injection hole (13) is provided on the top of the right connecting sleeve (4).

6. The B-ring empty ash injection packaging structure according to claim 1, characterized in that: The surface of the left connecting sleeve (3) is fixedly connected with a first fixing block (9), and the surface of the right connecting sleeve (4) is fixedly connected with a second fixing block (14). The first fixing block (9) and the second fixing block (14) are internally threadedly connected with bolts (10), and one end of the bolt (10) is threadedly connected with a nut (11).

7. The B-ring empty ash injection packaging structure according to claim 1 is characterized in that: The surface casing (1) is fixedly connected to the oil layer casing (2) inside, a ash injection hole (15) is provided on one side of the bottom of the surface casing (1), and a ash injection pipe interface (8) is provided on one side of the top of the left connecting sleeve (3).

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