Multi-node temperature acquisition probe tube

Abstract

The utility model relates to a kind of multi-node temperature acquisition probe pipes, including several pipe bodies and node parts, the node part is detachably arranged between two pipe bodies, and is connected with pipe body to form linear type, the node part includes heat insulation ring, protective sleeve, sealing seat and temperature probe, the protective sleeve is installed on heat insulation ring, and extend along the radial direction of heat insulation ring, the front end of the protective sleeve is closed, the rear end of the protective sleeve is sealed by sealing seat, the temperature probe is arranged in protective sleeve, the protective sleeve is filled with heat-conducting liquid. The temperature of different depths in well is measured using node part, and the depth of node part is adjustable, the temperature of multiple depth positions is measured at one time, the operation difficulty is reduced, the measurement efficiency is improved, and the sealing is strong, the liquid in well is avoided to penetrate into pipe body, the internal wire harness electrical connection of pipe body is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of drilling and detection technology, and in particular to a multi-node temperature acquisition probe. Background Technology

[0002] In geological exploration, geological drilling is conducted, and formation temperature data is collected by lowering a well temperature probe into the borehole. In existing well temperature probes, the temperature sensor is located on the outer side of the lower end of the probe, exposed outside the probe. The outside of the temperature probe is encased in a rubber hose, and the temperature probe is connected to a circuit board sealed inside the probe cavity via a signal transmission line to process the detected temperature signal. For example, application number CN201510200107.5 discloses a well temperature probe for geological drilling, which uses a sealed temperature probe structure and can stably detect downhole temperature. However, it can only detect the downhole temperature at a single depth at a time, and cannot simultaneously detect the temperature of formations at different depths. This necessitates multiple adjustments to the downhole depth, making on-site operation difficult. Therefore, improvements are needed. Utility Model Content

[0003] Therefore, it is necessary to provide a multi-node temperature acquisition probe to address the above problems.

[0004] A multi-node temperature acquisition probe includes several tube bodies and node sections. The node section is detachably disposed between two tube bodies and connected to the tube bodies to form a straight line. The node section includes a heat insulation ring, a protective sleeve, a sealing seat, and a temperature probe. The protective sleeve is installed on the heat insulation ring and extends along the radial direction of the heat insulation ring. The front end of the protective sleeve is closed, and the rear end of the protective sleeve is sealed by the sealing seat. The temperature probe is disposed inside the protective sleeve, and the protective sleeve is filled with a heat-conducting liquid.

[0005] Preferably, the upper and lower ends of the heat insulation ring are respectively provided with spiral openings for threaded connection with the pipe body.

[0006] Preferably, a sealing gasket is provided at the top of the spiral opening, and a stop ring is provided inside the tube, the stop ring cooperating with the spiral opening to clamp the sealing gasket.

[0007] Preferably, the heat-conducting liquid is an aqueous solution of ethylene glycol.

[0008] The advantages of this invention are: it uses a node to measure the temperature at different depths downhole, and the position and depth of the node are adjustable, allowing for simultaneous measurement of the temperature at multiple depths, reducing operational difficulty, improving measurement efficiency, and providing strong sealing to prevent downhole liquid from seeping into the pipe body, ensuring stable and reliable electrical connections of the wiring harness inside the pipe body. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a multi-node temperature acquisition probe as one embodiment;

[0010] Figure 2 This is a schematic diagram of a multi-node temperature acquisition probe structure. Detailed Implementation

[0011] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0012] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0014] like Figures 1-2As shown, a multi-node temperature acquisition probe includes several pipe bodies 1 and node sections 2. The node sections 2 are detachably disposed between two pipe body sections 1 and connected to the pipe body sections 1 to form a straight line. Each node section 2 includes a heat insulation ring 21, a protective sleeve 22, a sealing seat 23, and a temperature probe 24. The protective sleeve 22 is mounted on the heat insulation ring 21 and extends radially along the heat insulation ring 21. The front end of the protective sleeve 22 is closed, and the rear end of the protective sleeve 22 is sealed by the sealing seat 23. The temperature probe 24 is disposed inside the protective sleeve 22, which is filled with a heat-conducting liquid. Specifically, in this embodiment, there are multiple sets of pipe bodies 1 and node sections 2, which are assembled alternately. The node sections 2 are used to measure the temperature at different depths downhole, and the position of the node sections 2 is adjustable, allowing for simultaneous measurement of temperatures at multiple depths, reducing operational difficulty and improving measurement efficiency. The node 2 includes a heat insulation ring 21, a protective sleeve 22, a sealing seat 23, and a temperature probe 24. The heat insulation ring 21 is annular, with both ends detachably connected to the two pipe sections 1. The connection method can be either snap-fit ​​or spiral connection, which is not specifically limited here. The heat insulation ring 21 serves as the carrier of the protective sleeve 22, isolating the temperature and preventing heat conduction from the heat insulation ring 21 from affecting the measurement accuracy of the temperature probe 24 inside the protective sleeve 22. The protective sleeve 22 is made of a thermally conductive metal material with high structural strength and is filled with a thermally conductive liquid. This allows the temperature probe 24 to conduct heat between the thermally conductive liquid and the protective sleeve 22, thereby obtaining the downhole temperature parameters and performing analysis based on the thermal conductivity model. The protective sleeve 22 serves a protective function, preventing the temperature probe 24 from being directly exposed and easily scratched or damaged by downhole soil or other objects during downhole testing. The protective sleeve 22 also extends the service life of the temperature probe 24. It extends radially along the insulation ring 21 to the outside of the insulation ring 21, providing strong overall sealing and preventing downhole fluid from seeping into the node section 2. Simultaneously, a sealing seat 23 seals the rear end of the protective sleeve 22 to prevent leakage of heat-conducting fluid. The temperature probe 24's data acquisition harness passes through the sealing seat 23 and is electrically connected to the main line inside the node section 2, thereby summarizing and uploading the temperatures collected from each node section 2 to the surface central control unit for analysis and processing.

[0015] like Figure 2 As shown, the upper and lower ends of the heat insulation ring 21 are respectively provided with spiral openings 211 for threaded connection with the pipe body 1. The threaded openings 211 are used to cooperate with the pipe body 1 to achieve threaded connection, which is extremely convenient for disassembly and assembly.

[0016] like Figure 2As shown, a sealing gasket 212 is provided at the top of the spiral opening 211, and a stop ring 11 is provided inside the tube body 1. The stop ring 11 cooperates with the spiral opening 211 to clamp the sealing gasket 212. Specifically, the sealing gasket 212 is provided to enhance the sealing performance at the connection. The stop ring 11 cooperates with the spiral opening 211, causing the rubber sealing gasket 212 to deform and achieve an interference fit.

[0017] Specifically, the heat-conducting liquid is an aqueous solution of ethylene glycol.

[0018] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-node temperature acquisition probe, characterized in that: It includes several pipe sections and a node section. The node section is detachably disposed between two pipe sections and connected to the pipe sections to form a straight line. The node section includes a heat insulation ring, a protective sleeve, a sealing seat, and a temperature probe. The protective sleeve is installed on the heat insulation ring and extends along the radial direction of the heat insulation ring. The front end of the protective sleeve is closed, and the rear end of the protective sleeve is sealed by the sealing seat. The temperature probe is disposed inside the protective sleeve, and the protective sleeve is filled with a heat-conducting liquid.

2. The multi-node temperature acquisition probe as described in claim 1, characterized in that: The upper and lower ends of the heat insulation ring are respectively provided with spiral openings for threaded connection with the pipe body.

3. The multi-node temperature acquisition probe as described in claim 2, characterized in that: A sealing gasket is provided at the top of the spiral opening, and a stop ring is provided inside the tube. The stop ring cooperates with the spiral opening to clamp the sealing gasket.

4. The multi-node temperature acquisition probe as described in claim 1, characterized in that: The heat-conducting liquid is an aqueous solution of ethylene glycol.

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