A device for quickly taking out the test plug coil of a water injection well

Abstract

The utility model relates to oilfield downhole tool and equipment technical field especially relates to a kind of injection well test plug packing quick extraction device.The injection well test plug packing quick extraction device includes: insertion structure, center pole and sliding hammer.The insertion structure is conical structure, the head diameter of the conical structure is less than packing center hole diameter, the tail diameter of conical structure is greater than packing center hole diameter, the insertion structure connects center pole front end, the sliding hammer is sleeved on center pole, and sliding hammer slides along center pole.The injection well test plug packing quick extraction device provided by the utility model can realize the plug packing extraction operation using the device, the transition platform part of nail head contacts with packing, the impact force of sliding hammer impacting connector or handle sleeve is used when lifting or pressing handle, and packing is completely extracted, so as to shorten operation time, improve work efficiency and device practicality.

Description

Technical Field

[0001] This utility model relates to the field of oilfield downhole tools and equipment technology, and in particular to a device for quickly removing packing plugs from water injection wells. Background Technology

[0002] Accurate water injection well test results help understand reservoir characteristics, production status, and optimize development plans to improve production and economic benefits, serving as a crucial basis for oilfield development decisions. Test plug packing, as a key sealing element in water injection well testing, functions to fill equipment gaps during testing, prevent fluid leakage, ensure accurate and reliable testing, prevent external fluid interference with results, and thus provide accurate water injection well performance data.

[0003] However, in actual use, the packing plug will wear and age due to long-term use, losing its elasticity and sealing performance, requiring removal and replacement. Furthermore, after prolonged use, the packing plug is prone to expansion and deformation under the influence of fluid pressure and temperature, causing it to adhere tightly to the inner wall, increasing removal resistance, and loosening the fit between the plug and packing, significantly increasing the difficulty of removal. Existing technologies suffer from problems such as the limited space of the plug structure, the small contact area between the existing operating tools and the packing, the easy detachment of the packing during operation, the need for repeated operations, affecting work efficiency, and the reliance on operator-assisted rotation of the tool for removal, limiting applicability. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] This utility model provides a device for quickly removing packing from test plugs in water injection wells, which overcomes the problems of limited space in the existing plug structure, small contact area between existing operating tools and packing, easy detachment, limited applicability, and the need for repeated operations, resulting in reduced work efficiency.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides a quick removal device for packing plugs used in water injection well testing, comprising: an insertion structure, a central rod, and a sliding hammer;

[0008] The insertion structure is a conical structure, wherein the diameter of the head of the conical structure is smaller than the diameter of the packing center hole, and the diameter of the tail of the conical structure is larger than the diameter of the packing center hole;

[0009] The insertion structure is connected to the front end of the central rod, and the sliding hammer is sleeved on the central rod, sliding along the central rod.

[0010] Preferably, the insertion structure includes a nail head and a connector, wherein the nail head is connected to the center rod via the connector;

[0011] The nail head has a pointed tip, which is conical and connected to a frustum structure.

[0012] Preferably, the radius of the bottom surface of the tip is greater than the radius of the upper surface of the frustum structure, the radius of the upper surface of the frustum structure is less than the radius of the lower surface, and the transition part between the two frustum structures and the connecting surface between the tip and the frustum structure is a platform.

[0013] Preferably, a handle is connected to the tail end of the central rod;

[0014] The handle includes a glove sleeve and a handle.

[0015] Preferably, the handle sleeve has two through holes evenly distributed around its circumference, and the handle passes through the through holes to connect to the handle sleeve.

[0016] Preferably, the nail head is threaded to the connector head, and the nail head is provided with external threads.

[0017] Preferably, when using this device, the slide weight reciprocates along the central rod, striking the connector or handle sleeve.

[0018] (III) Beneficial Effects

[0019] This invention provides a device for quickly removing packing plugs from water injection wells. When using this device to remove packing plugs, the sliding hammer impacts the connector, providing impact force to the insertion structure. This forces the nail head into the packing plug cavity, ensuring full contact between the tip of the nail head and the transition platform between the frustum-shaped structure and the packing. The impact force from the sliding hammer striking the handle then quickly removes the packing along with the nail head from the packing cavity. This shortens operation time, avoids repetitive operations, and improves work efficiency and the device's practicality. Attached Figure Description

[0020] Figure 1 This invention relates to a schematic diagram of a partial structure of the nail head in a device for quickly removing packing plugs from a water injection well.

[0021] Figure 2 This invention provides a schematic diagram of a device for quickly removing packing plugs from water injection wells.

[0022] Figure 3 This invention relates to a cross-sectional view of a device for quickly removing packing plugs from a water injection well.

[0023] Wherein: 1: nail head; 11: tip; 12: frustum structure; 2: connector; 3: center rod; 4: sliding hammer; 5: handle sleeve; 6: handle. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] In the description of this utility model, it is necessary to understand that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "top", and "bottom" are all based on the orientation or positional relationship shown in the accompanying drawings. The purpose is only to facilitate the description of this utility model and simplify the description, and is not intended to indicate or imply that the indicated component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0026] like Figure 1-3 As shown, the present invention provides a quick removal device for packing plugs used in water injection well testing, comprising an insertion structure, a central rod 3, and a sliding hammer 4.

[0027] The insertion structure is a conical structure. The diameter of the head of the conical structure is smaller than the diameter of the packing center hole, and the diameter of the tail of the conical structure is larger than the diameter of the packing center hole. The insertion structure is connected to the front end of the central rod 3, and the sliding hammer 4 is sleeved on the central rod 3. When using this device, the sliding hammer 4 slides along the central rod 3.

[0028] The insertion structure includes a nail head 1 and a connector 2, which is used to connect the nail head 1 and a center rod 3. A sliding hammer 4 is fitted on the center rod 3. The center rod 3 is connected to a handle, which includes a handle sleeve 5 and a handle 6.

[0029] like Figure 1 As shown, the nail head 1 has a pointed tip 11, which is conical. The pointed tip 11 connects to a frustum structure 12. The radius of the base of the pointed tip 11 is larger than the radius of the lower surface of the frustum structure 12, and the radius of the upper surface of the frustum structure 12 is smaller than the radius of the lower surface. The transition portion between the two frustum structures 12 and / or the connecting surface between the bottom surface of the pointed tip 11 and the frustum structure 12 is a platform. After the nail head 1 enters the packing cavity, it makes full contact with the packing through this platform, thus preventing the packing from slipping when the test plug packing is removed using this device.

[0030] like Figure 2 As shown, the central rod 3 has a cylindrical structure with external threads at both ends. The connector 2 is a hollow hexagonal prism structure with internal threads. One end of the connector 2 is threaded to the nail head 1, and the other end is threaded to the central rod 3, ensuring a stable connection between the nail head 1 and the central rod 3. At the same time, the connector 2 makes the disassembly of the various components of the device easier and provides convenience for subsequent maintenance of the device.

[0031] like Figure 2-3As shown, the glove sleeve 5 has a hollow cylindrical structure. One end of the glove sleeve 5 has an internal thread, and the other end has two through holes evenly distributed around its circumference. A limiter is installed next to the through holes. The handle 6 has a cylindrical structure. The handle 6 passes through the two through holes and connects to the glove sleeve 5. Its position is fixed by the limiter to prevent the handle 6 from shaking or falling off.

[0032] The sliding hammer 4 is a hollow cylindrical structure. The sliding hammer 4 is sleeved on the central rod 3. When using the device, the sliding hammer 4 reciprocates along the central rod 3, striking the connector 2 and the handle sleeve 5, providing impact force to the device. Through inertia, the packing in the packing cavity can be removed more conveniently and quickly, improving work efficiency.

[0033] It should be noted that the packing cavity with a bottom through hole diameter of 5mm was selected as the test object for this embodiment. Based on this, the nail head diameter set in the above content is 4mm and the number of truncated cones in the middle of the nail head is 4.

[0034] It should be noted that the dimensions of the packing plugs used in actual work vary, and the size of the nail head and the number of truncated cones in the middle of the nail head can be adjusted according to work requirements.

[0035] The following is a detailed description of the actual working scenario of a device for quickly removing packing plugs from water injection wells.

[0036] In actual work, the nail head 1 and the center rod 3 are firmly connected by the connector 2. The sliding hammer 4 is put on the center rod 3, so that the handle sleeve 5 is threadedly connected and fixed to the center rod 3. The handle 6 is passed through the through hole set in the handle sleeve 5 and fixed in position, thus completing the assembly of the device.

[0037] When using the device to remove the test plug packing from the water injection well, align the nail head 1 with the center of the packing to be removed, hold the handle 6 and press down to make the sliding hammer 4 strike the connector 2. Through inertia, the nail head 1 will reach the bottom. Then lift the handle 6 to drive the sliding hammer 4 to strike the handle sleeve 5. The stepped plane will bring out the connected packing, thereby shortening the operation time, improving work efficiency, and enhancing the practicality of the device.

[0038] It is understood that the above-mentioned embodiments mentioned in this utility model can be combined with each other to form combined embodiments without violating the principle and logic. Due to space limitations, this utility model will not elaborate further.

[0039] Those skilled in the art will understand that, in the above-described method of the specific implementation, the order in which each step is written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0040] The various embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Those skilled in the art can make various changes and modifications without departing from the technical spirit of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the market of the embodiments, or to enable those skilled in the art to understand the embodiments disclosed herein.

Claims

1. A device for quickly removing packing plugs from water injection wells, characterized in that, include: Insertion structure, center rod (3) and slide (4); The insertion structure is a conical structure, wherein the diameter of the head of the conical structure is smaller than the diameter of the packing center hole, and the diameter of the tail of the conical structure is larger than the diameter of the packing center hole; The insertion structure is connected to the front end of the central rod (3), and the sliding hammer (4) is sleeved on the central rod (3) and slides along the central rod (3); The insertion structure includes a nail head (1) and a connector (2), wherein the nail head (1) is connected to the center rod (3) through the connector (2); The nail head (1) is provided with a tip (11), which is conical and connected to a frustum structure (12). The bottom radius of the tip (11) is greater than the upper surface radius of the frustum structure (12), the upper surface radius of the frustum structure (12) is less than the lower surface radius, and the transition part between the two frustum structures (12) and the connecting surface between the tip (11) and the frustum structure (12) is a platform.

2. The device for quickly removing packing plugs from a water injection well according to claim 1, characterized in that, The handle is connected to the tail end of the central rod (3).

3. The device for rapid removal of packing plugs from water injection wells according to claim 2, characterized in that, The handle includes a glove sleeve (5) and a handle (6). The glove sleeve (5) has two through holes evenly distributed around the circumference, and the handle (6) passes through the through holes and connects to the glove sleeve (5).

4. The device for quickly removing packing plugs from water injection wells according to claim 1, characterized in that, The nail head (1) is threadedly connected to the connector (2), and the nail head (1) is provided with external threads.

5. A device for rapid removal of packing plugs from water injection wells according to any one of claims 1-4, characterized in that, Using the device, the slide (4) reciprocates along the central rod (3) to strike the connector (2) or the handle sleeve (5).

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