Underground high-temperature measuring device

Abstract

According to the underground high-temperature measuring device, a measuring device body comprises a shell with heat dissipation holes, and a temperature sensor and an exhaust fan connected with the temperature sensor are arranged in the shell; furthermore, the heat dissipation hole is formed in one side of the shell, the temperature sensor is arranged on the other side of the shell, the connecting rod is connected with the bottom of the measuring device body, the connecting rod is of a hollow cylinder structure, the upper end of the hollow cylinder structure is provided with a first groove hole transversely penetrating through the cylinder wall, and the lower end of the hollow cylinder structure is provided with a second groove hole transversely penetrating through the cylinder wall. A spring is arranged in the spring sleeve, push blocks are arranged on the two sides of the spring respectively, push rods are fixedly connected to the sides, opposite to the spring, of the push blocks, the push rods penetrate through the spring sleeve and extend out of the first groove hole or the second groove hole, the inductor is arranged at the bottom of the telescopic rod, and the heat preservation cover is detachably connected with the threaded block and surrounds the inductor. The device avoids the influence of environment temperature, and is convenient to assemble and high in measurement precision.

Description

Technical Field

[0001] The present invention relates to the technical field of underground high temperature measurement, and in particular to an underground high temperature measurement device. Background Art

[0002] With the development of drilling and logging technology, the vibration of drill string has attracted more and more attention and concern from drilling and logging staff. In the process of drilling, the temperature measurement of the well is an indispensable measurement parameter. Accurate well temperature is of great significance for oil well monitoring. The existing test instruments have scattered circuit structures, large volumes, low integration and intelligence, poor reliability, and difficult maintenance. They are greatly affected by the ambient temperature. In cold weather or hot summer, the test structure of the sensor will be greatly affected. The connecting rod of the measuring device is long, which is very inconvenient to carry.

[0003] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0004] The purpose of the present invention is to provide an underground high temperature measuring device and method, which solves the problems in the prior art that weather temperature may affect the accuracy of the measuring device and that the measuring device is too long to be carried.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A downhole high temperature measuring device of the present invention comprises:

[0007] The measuring device body comprises a shell with a heat dissipation hole, wherein a temperature sensor and an exhaust fan connected to the temperature sensor are arranged in the shell; further, the heat dissipation hole is arranged on one side of the shell, and the temperature sensor is arranged on the other side of the shell,

[0008] A connecting rod is connected to the bottom of the measuring device body, the connecting rod is a hollow cylindrical structure, the upper end of the hollow cylindrical structure is provided with a first slot hole that transversely penetrates the cylinder wall, and the lower end of the hollow cylindrical structure is provided with a second slot hole that transversely penetrates the cylinder wall.

[0009] The telescopic rod is inserted into the connecting rod.

[0010] A spring sleeve is arranged at the top of the telescopic rod, a spring is arranged in the spring sleeve, push blocks are arranged on both sides of the spring, the push blocks are fixedly connected to a push rod on a side opposite to the spring, and the push rod passes through the spring sleeve and extends out of the first slot hole or the second slot hole.

[0011] A sensor is disposed at the bottom of the telescopic rod.

[0012] A threaded block is provided at the lower end of the telescopic rod,

[0013] A heat-insulating cover is detachably connected to the threaded block and surrounds the sensor.

[0014] In the underground high-temperature measuring device, the heat-insulating cover is provided with an internal thread which is threadedly connected to the threaded block.

[0015] In the underground high-temperature measuring device, two groups of springs are symmetrically arranged inside the spring sleeve.

[0016] In the underground high temperature measurement device, the first slot and the second slot are located on the same longitudinal center line.

[0017] In the underground high-temperature measuring device, three groups of heat dissipation holes are provided on one side of the surface of the measuring device body.

[0018] In the underground high-temperature measuring device, a heat-insulating layer is laid inside the heat-insulating cover.

[0019] In the underground high-temperature measuring device, the sensor is electrically connected to the measuring device body.

[0020] In the underground high-temperature measuring device, the measuring device body includes a sampling unit connected to the sensor, a filtering unit and an analog-to-digital conversion unit.

[0021] In the underground high-temperature measuring device, the measuring device body also includes a single-chip microcomputer.

[0022] In the underground high temperature measuring device, the underground high temperature measuring device is a symmetrical structure.

[0023] In the above technical scheme, the present invention provides a downhole high temperature measuring device, which has the following beneficial effects: it changes the situation of traditional test instruments with dispersed circuit structure, large volume, low integration and intelligence, poor reliability and difficult maintenance, making high-temperature downhole temperature detection a reality. When the weather is hot or cold, the sensor can be insulated by a heat-insulating cover to avoid the problem of inaccurate data caused by the weather when the sensor performs downhole high temperature measurement, which greatly improves the accuracy of the measurement. When the connecting rod needs to be retracted, the push rods on both sides can be pressed so that the push block squeezes the spring and retracts the push rod into the interior of the connecting rod, and then the telescopic rod is slid into the interior of the connecting rod to retract it, thus avoiding the problem of the connecting rod being too long and inconvenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of the axonometric structure of a downhole high-temperature measurement device provided in an embodiment of the present invention.

[0026] Figure 2 A schematic diagram of the main cross-sectional structure of a downhole high-temperature measurement device provided in an embodiment of the present invention.

[0027] Figure 3 for Figure 2 A schematic diagram of the A-enlarged structure of a downhole high-temperature measurement device provided by an embodiment of the present invention.

[0028] Figure 4 for Figure 2 A schematic diagram of the B-enlarged structure of a downhole high temperature measurement device provided by an embodiment of the present invention.

[0029] Figure 5 A schematic cross-sectional view of a measuring device body of a downhole high-temperature measuring device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 directly connected or indirectly connected 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.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] See also Figure 1-5 As shown, in one embodiment, a downhole high temperature measurement device of the present invention includes:

[0039] The measuring device body 1 comprises a shell with a heat dissipation hole, wherein a temperature sensor and an exhaust fan connected to the temperature sensor are arranged in the shell; further, the heat dissipation hole is arranged on one side of the shell, and the temperature sensor is arranged on the other side of the shell. Further, the measuring device body 1 has a temperature and humidity semiconductor sensor arranged in the shell for measuring humidity, temperature, dew point temperature, and wet bulb temperature, which can be used by relevant staff, management personnel, professionals, mobile staff, coal mine communication and defense personnel, etc. The heat dissipation hole is arranged on one side of the shell, and the temperature sensor is arranged on the other side of the shell.

[0040] The connecting rod 2 is connected to the bottom of the measuring device body 1. The connecting rod 2 is a hollow cylindrical structure. The upper end of the hollow cylindrical structure is provided with a first slot hole 12 that passes through the cylinder wall transversely, and the lower end is provided with a second slot hole 13 that passes through the cylinder wall transversely.

[0041] The telescopic rod 3 is inserted into the connecting rod 2.

[0042] A spring sleeve 8 is arranged at the top of the telescopic rod 3. A spring 9 is arranged inside the spring sleeve 8. Push blocks 10 are respectively arranged on both sides of the spring 9. The push block 10 is fixedly connected to a push rod 11 on a side opposite to the spring 9. The push rod 11 passes through the spring sleeve 8 and extends out of the first slot 12 or the second slot 13.

[0043] The sensor 4 is arranged at the bottom of the telescopic rod 3.

[0044] The thread block 5 is arranged at the lower end of the telescopic rod 3.

[0045] The heat-insulating cover 6 is detachably connected to the threaded block 5 and surrounds the sensor 4 .

[0046] In a preferred embodiment of the underground high-temperature measuring device, the heat-insulating cover 6 is provided with an internal thread 7 which is threadedly connected to the threaded block 5 .

[0047] In the preferred embodiment of the underground high temperature measuring device, two groups of springs 9 are symmetrically arranged inside the spring sleeve 8 .

[0048] In a preferred embodiment of the downhole high temperature measurement device, the first slot 12 and the second slot 13 are located on the same longitudinal center line.

[0049] In the preferred embodiment of the underground high-temperature measuring device, three groups of heat dissipation holes are provided on one side of the surface of the measuring device body 1 .

[0050] In the preferred embodiment of the underground high-temperature measuring device, a heat-insulating layer is laid inside the heat-insulating cover 6 .

[0051] In a preferred embodiment of the underground high-temperature measuring device, the sensor is electrically connected to the measuring device body 1.

[0052] In a preferred embodiment of the underground high temperature measuring device, the measuring device body 1 includes a sampling unit connected to the sensor, a filtering unit and an analog-to-digital conversion unit.

[0053] In a preferred embodiment of the underground high-temperature measuring device, the measuring device body 1 also includes a single-chip microcomputer.

[0054] In a preferred embodiment of the downhole high temperature measuring device, the downhole high temperature measuring device is a symmetrical structure.

[0055] In one embodiment, the downhole high temperature measuring device is packaged in a temperature and pressure resistant housing, ensuring that the temperature measurement, storage and processing of different depths can be completed in a single trip to the well in a 200°C harsh environment. In particular, the high temperature compensation setting enables the system to ensure the measurement accuracy and directly enter the oil layer for measurement, eliminating the intermediate transmission medium and avoiding distortion. The main technical parameter requirements of the measuring device body 1 are as follows: size: φ203mm; inner diameter: 80; buckle type: 631*630; measurement error less than 5%; material grade: P550; annulus temperature: 0~150 / ±1.

[0056] In one embodiment, an underground high-temperature measuring device includes a measuring device body 1, a connecting rod 2, a telescopic rod 3 and a sensor 4. The bottom of the measuring device body 1 is connected to the connecting rod 2, the telescopic rod 3 is inserted into the inside of the connecting rod 2, the sensor 4 is connected to one end of the telescopic rod 3, and a protective mechanism is provided on the surface of the sensor 4. The protective mechanism includes a threaded block 5, a heat preservation cover 6, an internal thread 7, a spring sleeve 8, a spring 9, a push block 10, a push rod 11, a first slot 12, a second slot 13, an exhaust fan 14, a heat dissipation hole 15 and a temperature sensor 16. The threaded block 5 is connected to the side of the telescopic rod 3 close to the sensor 4, internal threads 7 are arranged on both sides of the interior of the heat preservation cover 6, the spring sleeve 8 is arranged at the top of the telescopic rod 3, the spring 9 is arranged inside the spring sleeve 8, the push block 10 is arranged at one end of the spring 9, the push rod 11 is connected to one side of the push block 10, the first slot 12 and the second slot 13 are opened at the upper and lower ends of one side of the surface of the connecting rod 2, the exhaust fan 14 is arranged on one side of the interior of the measuring device body 1, the heat dissipation hole 15 is opened on one side of the surface of the measuring device body 1, and the temperature sensor 16 is arranged on the other side of the interior of the measuring device body 1.

[0057] Preferably, the inner material of the heat-insulating cover 6 is a heat-insulating material. When in use, the heat-insulating cover 6 has a heat-insulating effect, avoiding the problem that the accuracy of the temperature measurement by the sensor 4 is affected due to high or low weather temperature.

[0058] Preferably, the size of the heat preservation cover 6 is larger than that of the sensor 4, and the heat preservation cover 6 is threadedly connected to the thread block 5 through the internal thread 7. When in use, when it is necessary to use the measuring device body 1 to measure downhole, the heat preservation cover 6 can be removed from the surface of the thread block 5 through the internal thread 7, and then the measurement is performed through the sensor 4, and the threaded connection can make the heat preservation cover 6 more stable when protecting the sensor 4, and prevent the heat preservation cover 6 from accidentally falling off.

[0059] Preferably, the push block 10 forms an elastic structure between the spring sleeve 8 and the spring 9, and two groups of springs 9 are symmetrically arranged inside the spring sleeve 8. When in use, when the measuring device body 1 is used to measure the downhole temperature, the push rods 11 on both sides can be pinched to push the push block 10, so that the push block 10 squeezes the spring 9, and the push rod 11 is inserted into the interior of the connecting rod 2 through the first slot 12.

[0060] Preferably, the first slot 12 and the second slot 13 are on the same longitudinal center line. When in use, the telescopic rod 3 is held and slowly pulled out from the inside of the connecting rod 2. When the push rod 11 slides into the position of the second slot 13, since it is not squeezed, the spring 9 will push the push block 10 and push the push rod 11 into the second slots 13 on both sides for fixing, thus completing the extension of the connecting rod 2. When the connecting rod 2 needs to be retracted, the push rods 11 on both sides can be pinched first so that the push block 10 squeezes the spring 9, and then the telescopic rod 3 is slowly inserted into the inside of the connecting rod 2. When the push rod 11 slides into the position of the first slot 12, the spring 9 will push the push block 10 to insert the push rod 11 into the first slots 12 on both sides for fixing, thus completing the contraction of the connecting rod 2, avoiding the problem that the connecting rod 2 is too long and inconvenient to carry, and improving the convenience of carrying.

[0061] Preferably, three groups of heat dissipation holes 15 are provided on one side of the surface of the measuring device body 1. When in use, when the device temperature of the measuring device body 1 is high, the temperature sensor 16 will be sensed and the exhaust fan 14 will be turned on to dissipate heat inside the measuring device body 1, so as to avoid long-term high temperature affecting the normal use of the measuring device body 1.

[0062] When it is necessary to use the measuring device body 1 to measure the underground, the heat-insulating cover 6 can be removed from the surface of the threaded block 5 through the internal thread 7, and then the measurement can be carried out through the sensor 4, so that the heat-insulating cover 6 can play a heat-insulating effect, avoiding the problem that the accuracy of the temperature measurement by the sensor 4 is affected due to the large temperature difference in the weather; when it is necessary to use the measuring device body 1 to measure the underground temperature, you can first pinch the push rods 11 on both sides to push the push block 10 to squeeze the spring 9, and insert the push rod 11 into the inside of the connecting rod 2 through the first slot 12, and then hold the telescopic rod 3 to slowly pull the telescopic rod 3 out of the inside of the connecting rod 2, and when the push rod 11 slides into the position of the second slot 13, the spring 9 will push the push block 10 to insert the push rod 11 into the second slot 1 on both sides 3 is fixed, thus completing the extension of the connecting rod 2. When the connecting rod 2 needs to be retracted, the push rods 11 on both sides can be pinched first so that the push block 10 squeezes the spring 9, and then the telescopic rod 3 is slowly inserted into the interior of the connecting rod 2. When the push rod 11 slides into the position of the first slot hole 12, the spring 9 will push the push block 10 to insert the push rod 11 into the first slot holes 12 on both sides for fixation. In this way, the contraction of the connecting rod 2 is completed, avoiding the problem that the connecting rod 2 is too long and inconvenient to carry, and improving the convenience of carrying. When the equipment temperature of the measuring device body 1 is high, the temperature sensor 16 will be sensed and the exhaust fan 14 will be turned on to dissipate heat to the inside of the measuring device body 1, so as to avoid long-term high temperature affecting the normal use of the measuring device body 1.

[0063] Finally, it should be noted that the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present application.

[0064] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A downhole high temperature measuring device, characterized in that: These include, The measuring device body comprises a shell with a heat dissipation hole, wherein a temperature sensor and an exhaust fan connected to the temperature sensor are arranged in the shell; further, the heat dissipation hole is arranged on one side of the shell, and the temperature sensor is arranged on the other side of the shell, A connecting rod is connected to the bottom of the measuring device body, the connecting rod is a hollow cylindrical structure, the upper end of the hollow cylindrical structure is provided with a first slot hole that transversely penetrates the cylinder wall, and the lower end of the hollow cylindrical structure is provided with a second slot hole that transversely penetrates the cylinder wall. The telescopic rod is inserted into the connecting rod. A spring sleeve is arranged at the top of the telescopic rod, a spring is arranged in the spring sleeve, push blocks are arranged on both sides of the spring, the push blocks are fixedly connected to a push rod on a side opposite to the spring, and the push rod passes through the spring sleeve and extends out of the first slot hole or the second slot hole. A sensor is disposed at the bottom of the telescopic rod. A threaded block is provided at the lower end of the telescopic rod, A heat-insulating cover is detachably connected to the threaded block and surrounds the sensor.

2. A downhole high temperature measurement device according to claim 1, characterized in that: The heat-insulating cover is provided with an internal thread which is threadedly connected to the threaded block.

3. The downhole high temperature measuring device according to claim 1, characterized in that: Two groups of springs are symmetrically arranged inside the spring sleeve.

4. A downhole high temperature measurement device according to claim 1, characterized in that: The first slot and the second slot are located on the same longitudinal center line.

5. The downhole high temperature measuring device according to claim 1, characterized in that: Three groups of heat dissipation holes are provided on one side of the surface of the measuring device body.

6. The downhole high temperature measurement device according to claim 1, characterized in that: A thermal insulation layer is laid inside the thermal insulation cover.

7. The downhole high temperature measuring device according to claim 1, characterized in that: The sensor is electrically connected to the measuring device body.

8. The downhole high temperature measuring device according to claim 1, characterized in that: The measuring device body comprises a sampling unit connected to the sensor, a filtering unit and an analog-to-digital conversion unit.

9. The downhole high temperature measurement device according to claim 1, characterized in that: The measuring device body also includes a single chip microcomputer.

10. The downhole high temperature measuring device according to claim 1, characterized in that: The underground high temperature measuring device has a symmetrical structure.

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