Drill hole casing pipe

Abstract

The utility model discloses a drilling casing, which relates to the technical field of exploration drilling engineering, and comprises at least two casing main bodies and a pipe clamp which are detachably connected, a sealing structure is arranged on each casing main body, the sealing structure comprises a sealing ring and a sealing slot, and the sealing ring and the sealing slot are respectively arranged at two ends of each casing main body. The two casing pipe bodies can be sealed in an inserted mode through the sealing structures. A connecting structure is further arranged on the sleeve main bodies, the connecting structure comprises a movable clamping groove and a clamping piece, the movable clamping groove and the clamping piece are arranged at the two ends of the sleeve main bodies respectively, when the two sleeve main bodies are inserted and sealed, the two sleeve main bodies can be rotationally clamped through the connecting structure, and the pipe clamp can be inserted into a connecting gap between the two sleeve main bodies. And the two sleeve main bodies are extruded and supported. According to the drilling casing, the casing bodies are convenient to disassemble and assemble, and the construction progress is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of exploration and drilling engineering, in particular to a drilling casing. Background Art

[0002] During exploration drilling operations, the borehole often needs to pass through different strata.

[0003] When drilling or constructing wells for different purposes under various complex geological conditions such as loose alluvial strata, structural damage zones, and aquifers, it is inevitable to lay casing to protect the wall, prevent collapse, and isolate water.

[0004] At present, during casing drilling, two casings are usually connected by threads. However, the casing threads are not suitable for frequent disassembly, and the joints of the casings are easily damaged. At the same time, the cost of repairing and replacing the joints of the casings is high, which affects the construction progress. Utility Model Content

[0005] The utility model aims to provide a drilling casing to solve the problems existing in the above-mentioned prior art. The casing main bodies of the drilling casing are easy to disassemble and assemble, and the construction progress is not affected.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a drilling casing, comprising at least two detachably connected casing bodies and pipe clamps, wherein a sealing structure is arranged on the casing body, wherein the sealing structure comprises a sealing ring and a sealing slot, wherein the sealing ring and the sealing slot are respectively arranged at the two ends of the casing body, and the two casing bodies can be plugged and sealed through the sealing structure; a connecting structure is also arranged on the casing body, wherein the connecting structure comprises an active card slot and a clamping piece, wherein the active card slot and the clamping piece are respectively arranged at the two ends of the casing body, and when the two casing bodies are plugged and sealed, the two casing bodies can be rotatably clamped through the connecting structure, and the pipe clamp can be plugged in the connecting gap between the two casing bodies to extrude and support the two casing bodies.

[0008] Preferably, the pipe clamp is a C-shaped pipe clamp.

[0009] Preferably, the movable slot is arranged at one end of the sleeve body close to the sealing ring, and the clamping piece is arranged at one end of the sleeve body close to the sealing slot.

[0010] Preferably, the movable slot includes an L-shaped slot, which is formed on the inner wall of one end of the sleeve body close to the sealing ring, the horizontal end of the L-shaped slot extends along the circumference of the sleeve body, and the vertical end of the L-shaped slot extends outward along the axial direction of the sleeve body and is formed with a notch; the clamping member includes an L-shaped member, the vertical end of the L-shaped member is connected to the edge of one end of the sleeve body close to the sealing slot, the horizontal end of the L-shaped member extends along the circumference of the sleeve body, and the L-shaped member matches the L-shaped slot.

[0011] Preferably, a positioning bayonet is provided on one side of the horizontal end of the L-shaped groove close to the sealing ring, and a positioning block is provided on the L-shaped member, and the positioning block matches the positioning bayonet.

[0012] Preferably, the positioning bayonet is arranged at the horizontal end of the L-shaped groove; and the positioning block is arranged at the horizontal end of the L-shaped member.

[0013] Preferably, there are multiple L-shaped grooves, all of which are evenly distributed at one end of the sleeve body close to the sealing ring; there are multiple L-shaped parts, all of which are evenly distributed at one end of the sleeve body close to the sealing slot, and the L-shaped parts are arranged in one-to-one correspondence with the L-shaped grooves.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] The drilling casing provided by the utility model comprises at least two detachably connected casing bodies and pipe clamps, and the casing bodies are provided with sealing structures and connecting structures. When connecting two casing bodies, first, the two casing bodies are butted together by plugging and sealing through the sealing ring and the sealing slot between the two casing bodies, and then the two casing bodies are rotated and clamped by the movable clamping groove and the clamping piece between the two casing bodies, and then the pipe clamp is inserted into the connection gap between the two casing bodies, and the two casing bodies are squeezed and supported to make the two firmly connected; when the connection between the two casing bodies is disassembled, the casing bodies can be rotated and separated after the pipe clamp is knocked out. The casing bodies of the drilling casing provided by the utility model are easy to disassemble and assemble, and do not affect the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1A schematic diagram of a drilling casing provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a state where a C-shaped pipe clamp is knocked out of a drilling casing provided by an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a sleeve body in a cut-open state provided in an embodiment of the utility model.

[0020] In the figure: 1-sleeve body, 101-sealing ring, 102-sealing slot, 103-L-shaped groove, 1031-positioning bayonet, 104-L-shaped piece, 1041-positioning block, 2-C-shaped pipe clamp. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model aims to provide a drilling casing to solve the problems existing in the prior art. The casing main bodies of the drilling casing are easy to disassemble and assemble, and the construction progress is not affected.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1-Figure 2As shown, the present embodiment provides a drilling casing, comprising at least two detachably connected casing bodies 1 and C-shaped pipe clamps 2, a sealing structure is arranged on the casing body 1, the sealing structure comprises a sealing ring 101 and a sealing slot 102, the sealing ring 101 and the sealing slot 102 are respectively arranged at the two ends of the casing body 1, and the two casing bodies 1 can be plugged and sealed through the sealing structure; a connecting structure is also arranged on the casing body 1, the connecting structure comprises an active card slot and a card connector, the active card slot and the card connector are respectively arranged at the two ends of the casing body 1, when the two casing bodies 1 are plugged and sealed, the two casing bodies 1 can be rotated and clamped through the connecting structure, and the C-shaped pipe clamp 2 can be inserted into the connection gap between the two casing bodies 1 to squeeze and support the two casing bodies 1 so that the two are firmly connected; when the connection between the two casing bodies 1 is disassembled, the casing bodies 1 can be rotated to separate after the C-shaped pipe clamp 2 is knocked out. The drilling casing provided in this embodiment is suitable for large-diameter drilling construction. The casing body 1 of the drilling casing is easy to disassemble and assemble without affecting the construction progress, and solves the problem that the existing casing threaded joints are easily damaged due to frequent disassembly and have high maintenance and replacement costs.

[0025] In this embodiment, the movable card groove is arranged at one end of the sleeve body 1 close to the sealing ring 101, and the clamping piece is arranged at one end of the sleeve body 1 close to the sealing slot 102; specifically, the upper end of the sleeve body 1 in this embodiment is provided with the sealing ring 101 and the movable card groove, and the lower end is provided with the sealing slot 102 and the clamping piece.

[0026] Furthermore, if Figure 3 As shown, the movable slot includes an L-shaped slot 103, which is opened on the inner wall of the upper end of the sleeve body 1, the horizontal end of the L-shaped slot 103 extends along the circumference of the sleeve body 1, and the vertical end of the L-shaped slot 103 extends upward along the axial direction of the sleeve body 1 and is formed with a notch; the clamping member includes an L-shaped member 104, the vertical end of the L-shaped member 104 is connected to the lower end edge of the sleeve body 1, the horizontal end of the L-shaped member 104 extends along the circumference of the sleeve body 1, and the L-shaped member 104 matches the L-shaped slot 103.

[0027] In this embodiment, a positioning slot 1031 is disposed on the upper side of the horizontal end of the L-shaped groove 103 , and a positioning block 1041 is disposed on the L-shaped member 104 . The positioning block 1041 matches the positioning slot 1031 .

[0028] Furthermore, a positioning socket 1031 is provided at the horizontal end of the L-shaped groove 103; a positioning block 1041 is provided at the horizontal end of the L-shaped member 104; when the L-shaped member 104 of one sleeve body 1 is rotated and engaged in the L-shaped groove 103 of another sleeve body 1, the positioning block 1041 of the L-shaped member 104 is engaged with the positioning socket 1031 of the L-shaped groove 103, and at the same time, by inserting the C-shaped pipe clamp 2 into the connection gap between the two sleeve bodies 1, the two sleeve bodies 1 are pressurized and supported, so that the positioning block 1041 and the positioning socket 1031 are firmly squeezed, thereby avoiding the problem of decoupling between the L-shaped member 104 and the L-shaped groove 103.

[0029] In this embodiment, a plurality of L-shaped grooves 103 are provided, and all L-shaped grooves 103 are evenly arranged at the upper end of the sleeve body 1; a plurality of L-shaped pieces 104 are provided, and all L-shaped pieces 104 are evenly arranged at the lower end of the sleeve body 1, and the L-shaped pieces 104 are arranged one by one with the L-shaped grooves 103.

[0030] The use process of the drilling casing provided in this embodiment is as follows:

[0031] When connecting two sleeve bodies 1, first, the sealing slot 102 of the upper sleeve body 1 is plugged into the sealing ring 101 of the lower sleeve body 1, and then one of the sleeve bodies 1 is rotated to make the L-shaped piece 104 of the upper sleeve body 1 engage with the L-shaped groove 103 of the lower sleeve body 1, and the positioning block 1041 of the L-shaped piece 104 engages with the positioning slot 1031 of the L-shaped groove 103, and then, the two sleeve bodies 1 are pulled in the opposite direction to create a connection gap between the two sleeve bodies 1, and the C-shaped pipe clamp 2 is inserted into the connection gap between the two sleeve bodies 1, and the two sleeve bodies 1 are squeezed and supported so that the two are firmly connected and are not prone to decoupling; when disassembling the connection between the two sleeve bodies 1, the C-shaped pipe clamp 2 is knocked out and the sleeve bodies 1 can be rotated to separate.

[0032] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A drilling casing, characterized in that: It comprises at least two detachably connected sleeve bodies and pipe clamps, wherein a sealing structure is arranged on the sleeve body, wherein the sealing structure comprises a sealing ring and a sealing slot, wherein the sealing ring and the sealing slot are respectively arranged at the two ends of the sleeve body, and the two sleeve bodies can be plugged and sealed through the sealing structure; a connecting structure is also arranged on the sleeve body, wherein the connecting structure comprises an active card slot and a clamping piece, wherein the active card slot and the clamping piece are respectively arranged at the two ends of the sleeve body, and when the two sleeve bodies are plugged and sealed, the two sleeve bodies can be rotatably clamped through the connecting structure, and the pipe clamp can be plugged into the connecting gap between the two sleeve bodies to extrude and support the two sleeve bodies.

2. The drilling casing according to claim 1, characterized in that: The pipe clamp is a C-shaped pipe clamp.

3. The drilling casing according to claim 1, characterized in that: The movable clamping groove is arranged at one end of the sleeve body close to the sealing ring, and the clamping piece is arranged at one end of the sleeve body close to the sealing insertion slot.

4. The drilling casing according to claim 3, characterized in that: The movable slot includes an L-shaped slot, which is opened on the inner wall of one end of the sleeve body close to the sealing ring, the horizontal end of the L-shaped slot extends along the circumference of the sleeve body, and the vertical end of the L-shaped slot extends outward along the axial direction of the sleeve body and is formed with a notch; the clamping part includes an L-shaped part, the vertical end of the L-shaped part is connected to the edge of one end of the sleeve body close to the sealing slot, the horizontal end of the L-shaped part extends along the circumference of the sleeve body, and the L-shaped part matches the L-shaped slot.

5. The drilling casing according to claim 4, characterized in that: A positioning bayonet is arranged on one side of the horizontal end of the L-shaped groove close to the sealing ring, and a positioning block is arranged on the L-shaped member, and the positioning block matches the positioning bayonet.

6. The drilling casing according to claim 5, characterized in that: The positioning bayonet is arranged at the horizontal end of the L-shaped groove; and the positioning block is arranged at the horizontal end of the L-shaped piece.

7. The drilling casing according to any one of claims 4 to 6, characterized in that: There are multiple L-shaped grooves, all of which are evenly distributed at one end of the sleeve body close to the sealing ring; there are multiple L-shaped parts, all of which are evenly distributed at one end of the sleeve body close to the sealing slot, and the L-shaped parts are arranged in one-to-one correspondence with the L-shaped grooves.

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