Novel rock-soil energy storage geothermal well casing lowering auxiliary device

Abstract

The utility model relates to the technical field of heat exchange systems, in particular to a rock-soil energy storage circulating heat exchange system, and discloses a novel rock-soil energy storage geothermal well casing lowering auxiliary device which comprises a lifting ring and a lifting hook, a steel barrel is fixedly connected to the outer portion of the lifting ring, and a male buckle and a thread are fixedly connected to the bottom of the steel barrel. The top of the lifting hook is fixedly connected with a fixing rod, the outer part of the fixing rod is fixedly connected with a connecting buckle, the outer part of the lifting hook is fixedly connected with an anti-unhooking device, and the outer part of the anti-unhooking device is in contact with the outer part of the lifting hook. According to the device, the male buckle head is connected into the female buckle of the sleeve, the other end of the device is connected with an upper auxiliary device, and when the sleeve is put down, a crane can be used for hoisting the sleeve through the device, so that manpower can be effectively saved, the sleeve can be vertically aligned to a wellhead, and the sleeve can be put down into a hole efficiently and smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange systems, and more specifically to geotechnical energy storage and circulation heat exchange systems. The device can assist in lifting steel pipes, saving a lot of manpower. When using a crane to lift the casing, the casing can be kept vertical, allowing the entire string of casing to be lowered into the hole stably and efficiently. Background Art

[0002] A heat exchange geothermal well is a system that uses underground heat for heat exchange. It is primarily used for geothermal energy development and utilization, particularly in heating, hot water supply, and power generation. These wells are designed to extract heat from underground reservoirs efficiently and sustainably while minimizing environmental impact.

[0003] After drilling, the wellbore stagnates for a long time, and the upper mud settles and dilutes, which can easily cause the upper wellbore wall to become unstable or even collapse. Therefore, it is very necessary to safely, promptly and accurately lower the casing into the wellbore.

[0004] Therefore, it is necessary to propose an auxiliary casing lowering structure to solve the problem of how to lower the steel pipe safely, efficiently and accurately. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a new rock and soil energy storage geothermal well casing lowering auxiliary device, which aims to improve the problem of how some devices in the existing technology can lower steel pipes safely, efficiently and accurately.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A novel geothermal well casing lowering auxiliary device for geothermal energy storage includes a lifting ring and a lifting hook. The outside of the lifting ring is fixedly connected to a steel drum, and the bottom of the steel drum is fixedly connected to a male buckle and a thread.

[0008] As a further description of the above technical solution:

[0009] The top of the hook is fixedly connected to a fixing rod, and the outside of the fixing rod is fixedly connected to a connecting buckle;

[0010] As a further description of the above technical solution:

[0011] The interior of the connecting buckle is fixedly connected to a connecting rod, and the exterior of the connecting rod is threadedly connected to nuts on both left and right sides;

[0012] As a further description of the above technical solution:

[0013] The outside of the hook is fixedly connected with an anti-hook device, and the outside of the anti-hook device is in contact with the outside of the hook.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, the device is connected to the female buckle of the casing through the male buckle head, and the other end is connected to the upper auxiliary device. During the casing lowering operation, the casing can be lifted by a crane through the device, which can effectively save manpower and at the same time enable the casing to be vertically aligned with the wellhead, so that the casing can be lowered into the hole efficiently and smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of a new type of rock and soil energy storage geothermal well casing lowering auxiliary device proposed in the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the male buckle and thread of a new type of geothermal well casing lowering auxiliary device for rock and soil energy storage proposed in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a steel barrel of a new type of geothermal well casing lowering auxiliary device for rock and soil energy storage proposed in the utility model;

[0019] Figure 4 This is a structural schematic diagram of a hook for a new rock and soil energy storage geothermal well casing lowering auxiliary device proposed in the utility model.

[0020] Legend:

[0021] 1. Lifting ring; 2. Steel drum; 3. Male buckle and thread; 4. Connecting rod; 5. Connecting buckle; 6. Nut; 7. Fixing rod; 8. Lifting hook; 9. Anti-unhooking device. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Reference Figures 1 to 3 At the pipe laying site, the new device uses two lower devices, which can effectively save pipe laying time, reduce construction period and the risk of well wall instability and wellbore collapse.

[0024] Reference Figures 3 and 4 , tighten the male buckle position of the lower device and the female buckle of the casing manually or with a tool such as a wrench, and the lifting rope made of flexible aramid (not limited to) material is hoisted by the crane, and the lower part of the lifting rope is connected Figure 4As shown in the buckle, the buckle clamps and hooks the lower device lifting ring 1. In this way, the lifting rope is hooked by the crane, and the lifting rope is connected to the buckle to hook the lower device, and the lower device is connected to the casing, thereby playing the role of using the crane to lift the casing.

[0025] Reference Figure 3 During use, the other lower auxiliary device is pre-tightened onto the casing to be lowered. After the current casing is lowered and installed, the buckle of the upper auxiliary device is disconnected from the lifting ring 1 of the lower auxiliary device. The casing to be lowered, which is already connected to the lower auxiliary device, can then be lifted. Simultaneously, the lower auxiliary device is disconnected from the lowered casing, and the auxiliary device is then pre-installed on the next casing to be lowered. The cycle is repeated. Both the lower and upper parts of the auxiliary device are strong enough to ensure that they will not fall off when the entire string of casing is lifted.

[0026] Working Principle: First, two lower units are prepared on-site to improve lowering efficiency and reduce construction time and the risk of wellbore instability and collapse. At the start of the operation, the operator secures the pintle of the lower unit to the box of the casing manually or with a wrench. Next, a flexible aramid lifting rope is hoisted from a crane. The lower end of the rope is connected to a buckle, which securely hooks onto the lifting ring 1 of the lower unit. At this point, the crane hoists the lower unit and the casing together, completing the lowering of the casing.

[0027] During the lowering process, another lower auxiliary device is pre-tightened onto the casing to be lowered. Once the current casing is lowered and installed, the operator disconnects the upper auxiliary device's clip from the lower auxiliary device's lifting ring 1. The crane then lifts the casing to be lowered, attached to the lower auxiliary device, while simultaneously separating the lower auxiliary device from the lowered casing. The operator then reinstalls the auxiliary device onto the next casing to be lowered, preparing for the next operation. This efficient and safe process ensures that no casing falls during the entire string of casing, improving operational reliability and efficiency.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel geothermal well casing lowering auxiliary device for geothermal energy storage, comprising a lifting ring (1) and a lifting hook (8), characterized in that: The outside of the lifting ring (1) is fixedly connected to a steel drum (2), and the bottom of the steel drum (2) is fixedly connected to a male buckle and a thread (3).

2. The novel rock-soil energy storage geothermal well casing lowering auxiliary device according to claim 1 is characterized by: The top of the hook (8) is fixedly connected to a fixing rod (7), and the outside of the fixing rod (7) is fixedly connected to a connecting buckle (5).

3. The novel rock-soil energy storage geothermal well casing lowering auxiliary device according to claim 2 is characterized by: The interior of the connecting buckle (5) is fixedly connected to a connecting rod (4), and the exterior of the connecting rod (4) is threadedly connected to nuts (6) on both left and right sides.

4. The novel rock-soil energy storage geothermal well casing lowering auxiliary device according to claim 3 is characterized by: The outside of the hook (8) is fixedly connected to an anti-hook device (9), and the outside of the anti-hook device (9) is in contact with the outside of the hook (8).

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