Anti-collision structure for perforation fracturing device and perforation fracturing device

Abstract

The utility model relates to an anti-collision structure for a perforating and fracturing device, which comprises a connecting component, an anti-collision component and a connecting component, the crimping assembly is arranged at the bottom of the connecting assembly; the buffer assembly is arranged at the bottom of the crimping assembly and is elastically connected with the bottom of the crimping assembly; and when the bottom of the buffering assembly is subjected to upward pressure, the crimping assembly drives the connecting assembly to move towards the interior of the buffering assembly and then elastically reset, and buffering and collision prevention of the perforating and fracturing device body above the connecting assembly are achieved. The perforating and fracturing device can provide buffering support for the perforating and fracturing device body, in the using process, the buffering and anti-collision capacity can be effectively improved, it is guaranteed that parts of the perforating and fracturing device body cannot be damaged due to impact force generated by collision, and the service life is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of deep well oil production equipment, in particular to an anti-collision structure for a perforating and fracturing device and the perforating and fracturing device. Background Art

[0002] In the practical use of the existing cylindrical charge composite perforating and fracturing device for oil and gas wells, it is easy for the barrel to be blown up and the casing of the oil well to be damaged.

[0003] A conventional solution (CN201080818Y) discloses a downhole thermal chemical reservoir perforating and fracturing device, wherein a depth-calibrating short section whose lower end is connected to a screen tube is arranged at the lower end of the lowest oil pipe in the well pipe, a detonator connected to an uphole control device through a wire is arranged at the lower end of the screen tube, a centralizer connected to a gun head at the lower end of the detonator, at least one perforating gun is arranged at the lower end of the gun head, perforating bullets arranged in staggered manner at different positions and heights are arranged on the magazine in the perforating gun, one perforating bullet is connected to an adjacent perforating bullet by a detonating cord, a gun tail is arranged at the lower end of the perforating gun to prevent the perforating gun from being directly damaged by collision when it reaches the bottom of the well, and a metal particle chemical composite sleeve is arranged on the outside of the perforating gun. The metal particle chemical composite sleeve explodes after the perforating bullet is fired. By controlling the time when the gas acts on the bottom section of the oil layer, a multi-level pulse impact pressure is formed. The metal particles form a large number of cracks and micro cracks in the oil layer along with the high-pressure airflow, which improves the porosity and permeability structure of the oil layer and solves the pollution of the near-well zone. There will be no phenomenon of the gun barrel being blown up and the oil well casing being damaged.

[0004] However, the above-mentioned traditional solution only relies on the tail of the gun to buffer the collision. When the collision force is large, the buffering effect is insufficient, which can easily cause damage to the parts of the device and seriously affect the service life. Utility Model Content

[0005] The utility model aims to solve at least one technical problem in the background technology and provides an anti-collision structure for a perforating and fracturing device and a perforating and fracturing device.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an anti-collision structure for a perforating and fracturing device, comprising:

[0007] A connecting assembly is installed at the bottom of the perforating and fracturing device body;

[0008] A crimping assembly, arranged at the bottom of the connecting assembly;

[0009] A buffer assembly is arranged at the bottom of the crimping assembly and is elastically connected to the bottom of the crimping assembly;

[0010] When the bottom of the buffer assembly is subjected to upward pressure, the crimping assembly drives the connection assembly to move toward the inside of the buffer assembly and then elastically resets, thereby achieving buffering and collision prevention of the perforating and fracturing device body above the connection assembly.

[0011] According to one aspect of the utility model, the buffer assembly includes: a base, a center tube, a sliding ring, a first spring and a limiting ring;

[0012] The base is provided with a first installation cavity and has an upper end opening, and the central tube, the first spring and the sliding ring are arranged in the first installation cavity;

[0013] The first spring is sleeved on the periphery of the central tube, and the sliding ring is sleeved on the periphery of the central tube so as to be reciprocatingly movable along the vertical direction and supported on the top end of the first spring;

[0014] The limiting ring is arranged at the top end of the base foot, and is used to prevent the sliding ring from sliding out of the first installation cavity.

[0015] According to one aspect of the utility model, the buffer assembly further includes: a slider and a second spring;

[0016] The central tube is provided with a second installation cavity and has an upper end opening, and the second spring and the slider are arranged in the second installation cavity;

[0017] The slider is supported on the second spring so as to be reciprocatable in a vertical direction.

[0018] According to one aspect of the utility model, the crimping assembly comprises: a lower crimping cylinder;

[0019] The lower pressure cylinder comprises a mounting portion and an annular protrusion;

[0020] The mounting portion is mounted on the bottom of the connecting assembly, and one end of the annular protrusion is mounted on a side of the mounting portion facing the buffer assembly;

[0021] The other end of the annular protrusion is supported on the sliding ring.

[0022] According to one aspect of the utility model, the crimping assembly further includes: a connecting rod;

[0023] One end of the connecting rod is mounted on a side of the mounting portion facing the buffer assembly and is located at the center of the annular protrusion;

[0024] The other end of the connecting rod is supported on the sliding block.

[0025] According to one aspect of the utility model, the connection assembly includes: a mounting sleeve, an engagement column, a latch pin and a nut;

[0026] The mounting sleeve is installed at the bottom of the downhole thermal energy chemical reservoir perforation fracturing device, and a mounting groove is provided on the side thereof facing the crimping assembly;

[0027] The top end of the engagement column is detachably mounted in the mounting groove, and the bottom end thereof is connected to the top end of the crimping assembly;

[0028] The mounting sleeve and the engaging column are provided with corresponding through holes;

[0029] The latch passes through the through hole to connect the mounting sleeve and the engagement column;

[0030] The nut is arranged on the outer wall of the mounting sleeve and is arranged corresponding to the through hole of the mounting sleeve;

[0031] The free end of the latch is provided with an external thread, and is threadedly connected to the nut through the external thread;

[0032] The operating end of the latch is provided with a pull ring.

[0033] According to one aspect of the utility model, it further includes: a chassis, the chassis is coaxially connected to the buffer assembly, and the diameter of the chassis is greater than the diameter of the buffer assembly.

[0034] To achieve the above purpose, the utility model also provides a perforating and fracturing device, including the above-mentioned anti-collision structure for the perforating and fracturing device, and also includes: a perforating and fracturing device body, and the perforating and fracturing device body is supported on the top of the connecting assembly.

[0035] According to the scheme of the utility model, the utility model can provide buffer support for the body of the perforating and fracturing device. During use, it can effectively improve the buffering and anti-collision capabilities, ensure that the components of the body of the perforating and fracturing device will not be damaged due to the impact force generated by the collision, and effectively improve the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A diagram schematically showing a use state of an anti-collision structure for a perforating and fracturing device according to an embodiment of the utility model;

[0037] Figure 2 A cross-sectional view schematically showing the structural arrangement of an anti-collision structure for a perforating and fracturing device according to an embodiment of the utility model;

[0038] Figure 3 The figure schematically shows the use state of the anti-collision structure for the perforating and fracturing device according to another embodiment of the utility model. DETAILED DESCRIPTION

[0039] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.

[0040] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0041] Figure 1 A diagram schematically showing a use state of an anti-collision structure for a perforating and fracturing device according to an embodiment of the utility model; Figure 2 The schematic diagram shows a cross-sectional view of the structure arrangement of the anti-collision structure for the perforation and fracturing device according to one embodiment of the utility model. Figure 1 and Figure 2 As shown, in this embodiment, the anti-collision structure 102 for the perforating and fracturing device is installed at the bottom of the perforating and fracturing device body 101, and plays a role of buffering and anti-collision for the perforating and fracturing device body 101. Specifically, the anti-collision structure 102 for the perforating and fracturing device includes:

[0042] The connection assembly 103 is installed at the bottom of the perforating and fracturing device body 101;

[0043] A crimping assembly, arranged at the bottom of the connecting assembly 103;

[0044] A buffer assembly is arranged at the bottom of the crimping assembly and is elastically connected to the bottom of the crimping assembly;

[0045] When in contact with the bottom of the well, the bottom of the buffer assembly will be subjected to upward pressure, and at this time, the crimping assembly drives the connection assembly 103 to move toward the inside of the buffer assembly, and can be elastically reset after moving to a certain distance to buffer and unload the force, thus achieving buffering and collision prevention of the perforating and fracturing device body above the connection assembly. Such a setting can make the perforating and fracturing device have better buffering and collision prevention performance during use, effectively avoid the damage of parts caused by collision with the bottom of the well, and effectively improve the service life.

[0046] Furthermore, if Figure 2 As shown, in this embodiment, the connection assembly 103 includes: a mounting sleeve 113, an engagement column 114, a latch 115, a nut 116 and a pull ring 117. The crimping assembly includes: a lower pressing cylinder 108 and a connecting rod 112. The buffer assembly includes: a base 104, a center cylinder 105, a sliding ring 106, a first spring 107, a limiting ring 109, a second spring 110 and a slider 111.

[0047] like Figure 2 As shown, in this embodiment, the connecting assembly 103 is fixedly connected to the perforating and fracturing device body 101 and is located at the bottom of the perforating and fracturing device body 101; the base 104 is located below the crimping assembly; the center tube 105 is fixedly connected to the base 104 and is located inside the first mounting cavity of the base 104; the sliding ring 106 is slidingly connected to the outer wall of the center tube 105 and to the inner wall of the base 104, and is sleeved on the periphery of the center tube 105; the first spring 107 is sleeved on the periphery of the center tube 105 and is located below the sliding ring 106; the top of the mounting portion 118 of the lower pressure tube 108 is fixedly connected to the connecting assembly 103, the annular protrusion 119 of the lower pressure tube 108 is fixedly connected to the sliding ring 106, and the lower pressure tube 108 is located at the bottom of the connecting assembly 103; the limiting ring 109 is fixedly connected to the base 104 and is located at the top of the base 104. The connecting assembly 103 is used to detachably install the pressure cylinder 108 at the bottom of the perforating and fracturing device body 101; the sliding ring 106 can slide in the space between the center cylinder 105 and the base 104, and the limiting ring 109 is used to limit the sliding ring 106 so that the sliding ring 106 will not separate from the base 104. When in use, if a collision occurs with the bottom of the well, the base 104 directly contacts the bottom of the well, and the pressure cylinder 108 is pressed downward by force, driving the sliding ring 106 to be pressed downward, and the sliding ring 106 presses down the first spring 107, and the first spring 107 buffers the impact force, thereby having better buffering and anti-collision performance.

[0048] Moreover, the second spring 110 is arranged inside the central tube 105; the slider 111 is slidably connected to the central tube 105 and is located on the top of the second spring 110; the connecting rod 112 is fixedly connected to the slider 111 and to the pressing cylinder 108 and is located between the slider 111 and the pressing cylinder 108. When a collision occurs, when the pressing cylinder 108 is pressed downward by force, the slider 111 is pressed downward by the connecting rod 112, and the slider 111 presses down the second spring 110, and the second spring 110 buffers the impact force.

[0049] Further, in this embodiment, the mounting sleeve 113 is fixedly connected to the body 101 of the perforating and fracturing device and is located at the bottom of the body 101 of the perforating and fracturing device; the top end of the engaging column 114 is slidably connected to the mounting sleeve 113, and the bottom end is fixedly connected to the lower pressure cylinder 108, and the top end of the engaging column 114 is located in the mounting sleeve 113; the latch 115 passes through the through holes set on the mounting sleeve 113 and the engaging column 114; the nut 116 is threadedly connected to the free end of the latch 115. The mounting sleeve 113 is welded to the bottom of the body 101 of the perforating and fracturing device, and the engaging column 114 is welded to the top of the mounting portion of the lower pressure cylinder 108. When connecting, the engaging column 114 is slidably inserted into the mounting sleeve 113 so that the pin holes (the above-mentioned through holes) of the engaging column 114 and the mounting sleeve 113 are aligned, and then the latch 115 is inserted and locked with the nut 116 so that the engaging column 114 and the mounting sleeve 113 are connected together.

[0050] In addition, the pull ring 117 is fixedly connected to the latch 115 and is located at the operating end of the latch 115. The pull ring 117 facilitates pulling out the latch 115.

[0051] According to the above arrangement of the utility model, when in use, if a collision occurs with the bottom of the well, the base 104 directly contacts the bottom of the well, and the pressure cylinder 108 is pressed downward by force, driving the sliding ring 106 downward, and the sliding ring 106 presses down the first spring 107, and the first spring 107 buffers the impact force. At the same time, the pressure cylinder 108 will drive the slider 111 to be pressed downward through the connecting rod 112, and the slider 111 presses down the second spring 110, and the second spring 110 buffers the impact force, thereby having better buffering and anti-collision performance.

[0052] Further, Figure 3 The following is a schematic diagram showing the use status of the anti-collision structure for the perforation and fracturing device according to another embodiment of the present invention. Figure 3 As shown, in this embodiment, the anti-collision structure for the perforating and fracturing device also includes: a chassis 201, the chassis 201 is coaxially connected to the buffer assembly, and the diameter of the chassis is larger than the diameter of the buffer assembly. In this way, the chassis 201 can increase the direct contact area between the buffer assembly and the bottom of the well, so that the buffer assembly has better anti-collision performance.

[0053] Furthermore, in order to achieve the above-mentioned purpose, the utility model also provides a perforation fracturing device, such as Figure 1 and Figure 3 As shown, the perforating and fracturing device includes the above-mentioned anti-collision structure for the perforating and fracturing device, and also includes: a perforating and fracturing device body 101, and the perforating and fracturing device body 101 is supported on the top of the connecting assembly. In this way, the perforating and fracturing device body 101 can be buffered and anti-collision by the anti-collision structure for the perforating and fracturing device, ensuring that the parts of the perforating and fracturing device body 101 will not be damaged due to collision, and effectively improving the service life of the perforating and fracturing device body 101.

[0054] According to the above scheme of the utility model, the utility model can provide buffer support for the body of the perforating and fracturing device. During use, it can effectively improve the buffering and anti-collision capabilities, ensure that the components of the body of the perforating and fracturing device will not be damaged due to the impact force generated by the collision, and effectively improve the service life.

[0055] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. An anti-collision structure for a perforating and fracturing device, characterized in that: include: A connection assembly is installed at the bottom of the perforating and fracturing device body; A crimping assembly, arranged at the bottom of the connecting assembly; A buffer assembly is arranged at the bottom of the crimping assembly and is elastically connected to the bottom of the crimping assembly; When the bottom of the buffer assembly is subjected to upward pressure, the crimping assembly drives the connection assembly to move toward the inside of the buffer assembly and then elastically resets, thereby achieving buffering and collision prevention of the perforating and fracturing device body above the connection assembly.

2. The anti-collision structure for the perforating and fracturing device according to claim 1, characterized in that: The buffer assembly comprises: a base, a center tube, a sliding ring, a first spring and a limiting ring; The base is provided with a first installation cavity and has an upper end opening, and the central tube, the first spring and the sliding ring are arranged in the first installation cavity; The first spring is sleeved on the periphery of the central tube, and the sliding ring is sleeved on the periphery of the central tube so as to be reciprocatingly movable along the vertical direction and supported on the top end of the first spring; The limiting ring is arranged at the top end of the base foot, and is used to prevent the sliding ring from sliding out of the first installation cavity.

3. The anti-collision structure for the perforating and fracturing device according to claim 2, characterized in that: The buffer assembly further includes: a slider and a second spring; The central tube is provided with a second installation cavity and has an upper end opening, and the second spring and the slider are arranged in the second installation cavity; The slider is supported on the second spring so as to be reciprocatable in a vertical direction.

4. The anti-collision structure for the perforating and fracturing device according to claim 3, characterized in that: The crimping assembly comprises: a lower crimping cylinder; The lower pressure cylinder comprises a mounting portion and an annular protrusion; The mounting portion is mounted on the bottom of the connecting assembly, and one end of the annular protrusion is mounted on a side of the mounting portion facing the buffer assembly; The other end of the annular protrusion is supported on the sliding ring.

5. The anti-collision structure for the perforating and fracturing device according to claim 4, characterized in that: The crimping assembly further includes: a connecting rod; One end of the connecting rod is mounted on a side of the mounting portion facing the buffer assembly and is located at the center of the annular protrusion; The other end of the connecting rod is supported on the sliding block.

6. The anti-collision structure for the perforating and fracturing device according to claim 1, characterized in that: The connecting assembly comprises: a mounting sleeve, an engagement column, a latch pin and a nut; The mounting sleeve is installed at the bottom of the downhole thermal energy chemical reservoir perforation fracturing device, and a mounting groove is provided on the side thereof facing the crimping assembly; The top end of the engagement column is detachably mounted in the mounting groove, and the bottom end thereof is connected to the top end of the crimping assembly; The mounting sleeve and the engaging column are provided with corresponding through holes; The latch passes through the through hole to connect the mounting sleeve and the engagement column; The nut is arranged on the outer wall of the mounting sleeve and is arranged corresponding to the through hole of the mounting sleeve; The free end of the latch is provided with an external thread, and is threadedly connected to the nut through the external thread; The operating end of the latch is provided with a pull ring.

7. The anti-collision structure for a perforating and fracturing device according to any one of claims 1 to 6, characterized in that: Also includes: A chassis is coaxially connected to the buffer assembly, and a diameter of the chassis is greater than a diameter of the buffer assembly.

8. Perforation and fracturing device, characterized in that: The anti-collision structure for the perforating and fracturing device comprises the anti-collision structure for the perforating and fracturing device according to any one of claims 1 to 7, and further comprises: a perforating and fracturing device body, wherein the perforating and fracturing device body is supported on the top of the connecting assembly.

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