Expansion type packer structure

Abstract

The utility model relates to the field of packers, and discloses an expanding type packer structure which comprises a packer body, an expanding device and a sealing device. The cleaning part is arranged on the outer wall of the packer body; and the replacement part is arranged at the bottom of the packer body. The cleaning part comprises a fixing frame fixedly connected to the inner wall of the packer body. And the fixing column is fixedly connected between the interiors of the fixing frames. The outer wall of the fixing column is slidably connected with a sliding sleeve, the top of the fixing frame is fixedly connected with an air pump, an intermediate circuit of the air pump is connected with a control center, and the output end of the air pump is fixedly connected to the top of the sliding sleeve. The control center is controlled through the cleaning part to drive the air pump to start, so that the sliding sleeve at the output end of the air pump slides on the outer wall of the fixing column, the scraper blade is adjusted according to the radius of the inner wall of the pipeline under the assistance of the connecting rod, and the effect that the inner wall of the pipeline is cleaned before the packer body packs the pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the field of packers, in particular to an expansion packer structure. Background Art

[0002] It refers to a downhole tool connected to the downhole tubing string and used to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall. When it is necessary to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall, the packer is connected to the downhole tubing string. After it reaches the designed depth, the packer on the packer is expanded by hydraulic drive and other means to isolate the oil casing annulus. Different types of packers have different starting and unlocking methods.

[0003] Some current packers expand the expansion sealant tube when stratifying the pipeline, thus stratifying the pipeline. However, the inner wall of the pipeline has oil, waste, etc., which not only causes certain wear to the expansion sealant tube, shortening its service life and requiring replacement, but also has poor sealing performance. Utility Model Content

[0004] The utility model aims to provide an expandable packer structure to achieve the purpose of solving the above-mentioned background technical problems.

[0005] To achieve the above object, the utility model provides the following technical solutions: an expandable packer structure, comprising: a packer body; a cleaning portion arranged on the outer wall of the packer body; and a replacement portion arranged at the bottom of the packer body.

[0006] Preferably, the cleaning part includes: a fixing frame fixedly connected to the inner wall of the packer body; and a fixing column fixedly connected between the inside of the fixing frame.

[0007] Preferably, the outer wall of the fixed column is slidably connected with a sliding sleeve, the top of the fixed frame is fixedly connected with an air pump, the intermediate circuit of the air pump is connected with a control center, and the output end of the air pump is fixedly connected to the top of the sliding sleeve.

[0008] Preferably, the outer wall of the fixed column is rotatably connected to a connecting rod via an axle, the other end of the connecting rod is rotatably connected to a scraper via an axle, a connecting rod is arranged between the scraper and the sleeve, one end of the connecting rod is rotatably connected to one side of the scraper via an axle, and the other end is rotatably connected to the outer wall of the sleeve via an axle.

[0009] Preferably, the replacement part includes: a fixing sleeve slidably connected to the outer wall of the packer body; and a fixing block fixedly connected to the outer wall of the packer body.

[0010] Preferably, one side of the fixed block is fixedly connected to a limiting block, and the other limiting block is fixedly connected to the outer wall of the fixed sleeve, one side of the fixed block is fixedly connected to an adjusting box, and the other adjusting box is fixedly connected to the outer wall of the fixed sleeve, a sliding hole is opened inside the adjusting box, and the outer wall of the fixed sleeve is fixedly connected to a connecting column.

[0011] Preferably, one side of the fixing block is rotatably connected to a hook via a shaft, one side of the fixing block is fixedly connected to a protective shell, and another side of the protective shell is fixedly connected to an outer wall of the fixing sleeve.

[0012] Preferably, the outer wall of the connecting column is slidably connected with an adapter rod, and the adapter rod is adapted to the hook. The inside of the adjusting box is slidably connected with a card column, and the card column is adapted to the sliding hole. A spring is arranged between the card column and the adjusting box, and one end of the spring is fixedly connected to one end of the card column, and the other end is fixedly connected to the inner wall of the adjusting box.

[0013] The utility model provides an expandable packer structure, which has the following beneficial effects:

[0014] (1) The utility model controls the control center through the cleaning part, so that the control center drives the air pump to start, so that the sliding sleeve at the output end of the air pump slides on the outer wall of the fixed column. With the assistance of the connecting rod, the scraper is adjusted according to the radius of the inner wall of the pipeline, so as to achieve the effect of cleaning the inner wall of the pipeline before the packer body seals the pipeline.

[0015] (2) The utility model replaces the expansion sleeve by replacing the part. When the expansion sleeve is damaged by the ravages of time, the expansion sleeve is replaced, and the adapter rod is pulled to slide upward along the trajectory of the limit block, so that the hook is no longer engaged with the adapter rod. Under the action of the bottom spring and the clamping column, the hook rotates and is no longer engaged with the upper clamping column, so as to achieve the purpose of the fixed sleeve no longer being engaged with the fixed block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a front view of the utility model;

[0018] Figure 3 This is a view of the cleaning part of the utility model;

[0019] Figure 4 This is a view of the replacement part of the utility model;

[0020] Figure 5 This is a detailed view of the replacement part of the utility model.

[0021] In the figure: 1 packer body, 2 cleaning part, 3 replacement part;

[0022] 211 fixed frame, 212 fixed column, 213 sliding sleeve, 214 air pump, 215 control center, 216 connecting rod, 217 scraper;

[0023] 311 fixing sleeve, 312 expansion sleeve, 313 limiting block, 314 hook, 315 connecting column, 316 adapter rod, 317 adjustment box, 318 clamping column, 319 spring, 320 protective shell, 321 fixing block. DETAILED DESCRIPTION

[0024] 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.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0026] A preferred embodiment of the expandable packer structure provided by the utility model is as follows Figure 1-5 As shown: an expandable packer structure, comprising: a packer body 1; a cleaning portion 2 arranged on the outer wall of the packer body 1; and a replacement portion 3 arranged at the bottom of the packer body 1.

[0027] The cleaning part 2 includes: a fixing frame 211 fixedly connected to the inner wall of the packer body 1; and a fixing column 212 fixedly connected between the inside of the fixing frame 211.

[0028] The outer wall of the fixed column 212 is slidably connected with a sliding sleeve 213 , the top of the fixed frame 211 is fixedly connected with an air pump 214 , the intermediate circuit of the air pump 214 is connected with a control center 215 , and the output end of the air pump 214 is fixedly connected to the top of the sliding sleeve 213 .

[0029] The outer wall of the fixed column 212 is connected to a connecting rod 216 by rotation of an axis rod, and the other end of the connecting rod 216 is connected to a scraper 217 by rotation of an axis rod. A connecting rod 216 is arranged between the scraper 217 and the sleeve 213, and one end of the connecting rod 216 is connected to one side of the scraper 217 by rotation of an axis rod, and the other end is connected to the outer wall of the sleeve 213 by rotation of an axis rod.

[0030] Furthermore, this embodiment controls the control center 215 so that the control center 215 drives the air pump 214 to start, so that the sleeve 213 at the output end of the air pump 214 slides on the outer wall of the fixed column 212. With the assistance of the connecting rod 216, the scraper 217 is adjusted according to the radius of the inner wall of the pipeline, so as to achieve the effect of cleaning the inner wall of the pipeline before the pipeline is sealed by the sealing device body 1. Example 2

[0031] Based on Example 1, a preferred embodiment of an expandable packer structure provided by the utility model is as follows: Figure 1-5 As shown, the replacement part 3 includes: a fixing sleeve 311 slidably connected to the outer wall of the packer body 1 ; and a fixing block 321 fixedly connected to the outer wall of the packer body 1 .

[0032] One side of the fixed block 321 is fixedly connected to the limiting block 313, and the other limiting block 313 is fixedly connected to the outer wall of the fixed sleeve 311. One side of the fixed block 321 is fixedly connected to the adjusting box 317, and the other adjusting box 317 is fixedly connected to the outer wall of the fixed sleeve 311. A sliding hole is opened inside the adjusting box 317, and the outer wall of the fixed sleeve 311 is fixedly connected to the connecting column 315.

[0033] One side of the fixing block 321 is rotatably connected to the hook 314 via a shaft, one side of the fixing block 321 is fixedly connected to the protective shell 320 , and the other side of the protective shell 320 is fixedly connected to the outer wall of the fixing sleeve 311 .

[0034] The outer wall of the connecting column 315 is slidably connected with an adapter rod 316, and the adapter rod 316 is adapted to the hook 314. The inside of the adjusting box 317 is slidably connected with a card column 318, and the card column 318 is adapted to the sliding hole. A spring 319 is arranged between the card column 318 and the adjusting box 317, and one end of the spring 319 is fixedly connected to one end of the card column 318, and the other end is fixedly connected to the inner wall of the adjusting box 317.

[0035] Furthermore, in this embodiment, when the expansion sleeve 312 is damaged due to the ravages of time, the expansion sleeve 312 is replaced, pulling the adapter rod 316, causing the adapter rod 316 to slide upward along the trajectory of the limit block 313, so that the hook 314 is no longer engaged with the adapter rod 316, and under the action of the bottom spring 319 and the clamping column 318, the hook 314 is rotated and no longer engaged with the upper clamping column 318, thereby achieving the purpose of the fixed sleeve 311 no longer being engaged with the fixed block 321.

[0036] When in use, first, control the control center 215 so that the control center 215 drives the air pump 214 to start, so that the sliding sleeve 213 at the output end of the air pump 214 slides on the outer wall of the fixed column 212, and with the assistance of the connecting rod 216, the scraper 217 is adjusted according to the radius of the inner wall of the pipeline, so as to achieve the effect of cleaning the inner wall of the pipeline before the pipeline is isolated by the sealing device body 1; secondly, when the expansion sleeve 312 is damaged by the ravages of time, the expansion sleeve 312 is replaced, and the adapter rod 316 is pulled to slide upward along the trajectory of the limit block 313, so that the hook 314 is no longer engaged with the adapter rod 316, and under the action of the bottom spring 319 and the clamping column 318, the hook 314 is rotated and no longer engaged with the upper clamping column 318, so that the fixed sleeve 311 is no longer engaged with the fixed block 321.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An expandable packer structure, characterized in that: include: Packer body (1); A cleaning portion (2) disposed on the outer wall of the packer body (1); A replacement portion (3) arranged at the bottom of the packer body (1); The cleaning part (2) includes: A fixing frame (211) fixedly connected to the inner wall of the packer body (1); A fixing column (212) fixedly connected between the inner parts of the fixing frame (211); The outer wall of the fixed column (212) is slidably connected to a sliding sleeve (213), the top of the fixed frame (211) is fixedly connected to an air pump (214), the intermediate circuit of the air pump (214) is connected to a control center (215), and the output end of the air pump (214) is fixedly connected to the top of the sliding sleeve (213); The outer wall of the fixed column (212) is rotatably connected to a connecting rod (216) via an axle, and the other end of the connecting rod (216) is rotatably connected to a scraper (217) via an axle. A connecting rod (216) is provided between the scraper (217) and the sliding sleeve (213), and one end of the connecting rod (216) is rotatably connected to one side of the scraper (217) via an axle, and the other end is rotatably connected to the outer wall of the sliding sleeve (213) via an axle.

2. An expandable packer structure according to claim 1, characterized in that: The replacement part (3) includes: A fixing sleeve (311) slidably connected to the outer wall of the packer body (1); The fixing block (321) is fixedly connected to the outer wall of the packer body (1).

3. An expandable packer structure according to claim 2, characterized in that: One side of the fixed block (321) is fixedly connected to a limit block (313), and the other limit block (313) is fixedly connected to the outer wall of the fixed sleeve (311); one side of the fixed block (321) is fixedly connected to an adjustment box (317), and the other adjustment box (317) is fixedly connected to the outer wall of the fixed sleeve (311); a sliding hole is provided inside the adjustment box (317), and the outer wall of the fixed sleeve (311) is fixedly connected to a connecting column (315).

4. An expandable packer structure according to claim 2, characterized in that: One side of the fixed block (321) is rotatably connected to a hook (314) via a shaft, one side of the fixed block (321) is fixedly connected to a protective shell (320), and the other side of the protective shell (320) is fixedly connected to the outer wall of the fixed sleeve (311).

5. An expandable packer structure according to claim 3, characterized in that: An adapting rod (316) is slidably connected to the outer wall of the connecting column (315), and the adapting rod (316) is adapted to the hook (314). A clamping column (318) is slidably connected to the inside of the regulating box (317), and the clamping column (318) is adapted to the sliding hole. A spring (319) is provided between the clamping column (318) and the regulating box (317), and one end of the spring (319) is fixedly connected to one end of the clamping column (318), and the other end is fixedly connected to the inner wall of the regulating box (317).

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