Downhole high temperature measuring device

Abstract

The application discloses a downhole high-temperature measuring device, which comprises a measuring device body, a temperature sensor and an exhaust fan connected to the temperature sensor. The measuring device body comprises a shell with heat dissipation holes. The heat dissipation holes are 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 cylinder structure. The upper end of the hollow cylinder structure is provided with a first slot hole penetrating through the cylinder wall in a transverse direction, and the lower end of the hollow cylinder structure is provided with a second slot hole penetrating through the cylinder wall in a transverse direction. A spring sleeve is arranged on the top of the connecting rod. The spring sleeve is provided with a spring. Push blocks are arranged on the two sides of the spring. The push blocks are fixedly connected to push rods on the side opposite to the spring. The push rods extend out of the first slot hole or the second slot hole through the spring sleeve. The sensor is arranged on the bottom of the connecting rod. A heat preservation cover is detachably connected to a threaded block and surrounds the sensor. The device avoids the influence of the ambient temperature, is convenient to assemble and has high measuring precision.

Description

Technical Field

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

[0002] With the development of drilling and logging technology, drill string vibration has attracted more and more attention and concern from drilling and logging personnel. During the drilling process, downhole temperature measurement is an essential measurement parameter. Accurate downhole temperature is of great significance for oil well monitoring. However, existing test instruments have scattered circuit structures, large size, low integration and intelligence, poor reliability, and difficult maintenance. They are greatly affected by ambient temperature. In relatively cold weather or relatively 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 affects the accuracy of the measuring device and that the measuring device is long and inconvenient to carry.

[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 includes a shell with a heat dissipation hole, 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 passes through the cylindrical wall transversely, and the lower end is provided with a second slot hole that passes through the cylindrical wall transversely.

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

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

[0011] A sensor is provided 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 that is threadedly connected to the threaded block.

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

[0016] In the downhole 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 thermal insulation layer is laid inside the thermal insulation cover.

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

[0020] In the downhole 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 downhole high-temperature measuring device, the downhole high-temperature measuring device has a symmetrical structure.

[0023] In the above technical solution, the present invention provides an underground high-temperature measurement device, which has the following beneficial effects: it changes the situation of traditional test instruments with dispersed circuit structures, large volumes, low integration and intelligence, poor reliability, and difficult maintenance, making high-temperature underground 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 is performing underground high-temperature measurement, thereby greatly improving 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 the push rod is retracted into the interior of the connecting rod, and then the telescopic rod is slid into the interior of the connecting rod to retract it. This avoids 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 following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described 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 by an embodiment of the present invention.

[0026] Figure 2 The present invention provides a schematic diagram of a 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 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 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] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, 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 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 shall fall 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 as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also 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, it does not need to be further defined or explained 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 to 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0035] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean 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 includes a shell with a heat dissipation hole, a temperature sensor and an exhaust fan connected to the temperature sensor are provided in the shell; further, the heat dissipation hole is provided on one side of the shell, and the temperature sensor is provided on the other side of the shell. Further, the measuring device body 1 has a temperature and humidity semiconductor sensor provided 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 provided on one side of the shell, and the temperature sensor is provided 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 12 that passes through the cylindrical wall horizontally, and the lower end is provided with a second slot 13 that passes through the cylindrical wall horizontally.

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

[0042] A spring sleeve 8 is provided at the top of the telescopic rod 3. A spring 9 is provided in the spring sleeve 8. Push blocks 10 are provided on both sides of the spring 9. The push blocks 10 are fixedly connected to a push rod 11 on the 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 located at the bottom of the telescopic rod 3.

[0044] The threaded block 5 is provided 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 downhole high-temperature measuring device, the heat-insulating cover 6 is provided with an internal thread 7 threadedly connected to the threaded block 5 .

[0047] In the preferred embodiment of the downhole 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 a preferred embodiment of the downhole 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 a preferred embodiment of the downhole high-temperature measuring device, a thermal insulation layer is laid inside the thermal insulation cover 6 .

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

[0052] In a preferred embodiment of the downhole 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 downhole high-temperature measuring device, the measuring device body 1 further includes a single-chip microcomputer.

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

[0055] In one embodiment, a downhole high-temperature measurement device is housed in a heat- and pressure-resistant housing, ensuring that temperature measurement, storage, and processing at various depths can be completed in a single trip, even in harsh environments up to 200°C. In particular, the high-temperature compensation feature ensures accurate measurement directly into the oil reservoir, eliminating the need for intermediate transmission media and preventing distortion. The main technical parameters of the measuring device body 1 are as follows: Dimensions: φ203mm; Inner diameter: 80mm; Buckle type: 631*630mm; Measurement error less than 5%; Material grade: P550; Annular temperature: 0-150°C / ±1°C.

[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, and the sensor 4 is connected to one end of the telescopic rod 3. A protective mechanism is provided on the surface of the sensor 4, and the protective mechanism includes a threaded block 5, a thermal insulation 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 provided on both sides of the interior of the thermal insulation cover 6, the spring sleeve 8 is provided at the top of the telescopic rod 3, the spring 9 is provided inside the spring sleeve 8, the push block 10 is provided 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 provided on one side of the interior of the measuring device body 1, the heat dissipation hole 15 is provided on one side of the surface of the measuring device body 1, and the temperature sensor 16 is provided 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 temperature measurement of the sensor 4 is affected by high or low weather temperatures.

[0058] Preferably, the size of the heat-insulating cover 6 is larger than that of the sensor 4, and the heat-insulating cover 6 is threadedly connected to the threaded block 5 via the internal thread 7. During use, when it is necessary to use the measuring device body 1 to measure downhole, the heat-insulating cover 6 can be removed from the surface of the threaded block 5 via the internal thread 7, and then the measurement can be carried out using the sensor 4. The threaded connection can make the heat-insulating cover 6 more stable when protecting the sensor 4, and prevent the heat-insulating 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 sets of springs 9 are symmetrically arranged inside the spring sleeve 8. When using the measuring device body 1 to measure the downhole temperature, you can first pinch the push rods 11 on both sides to push the push block 10, so that the push block 10 squeezes the spring 9 and inserts the push rod 11 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. During use, the telescopic rod 3 is then held and slowly withdrawn from the interior of the connecting rod 2. When the push rod 11 slides into the second slot 13, since it is not squeezed, the spring 9 pushes the push block 10 and pushes the push rod 11 into the second slots 13 on both sides for fixation, 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 blocks 10 squeeze the springs 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 first slot 12, the spring 9 pushes the push block 10 and inserts the push rod 11 into the first slots 12 on both sides for fixation, thus completing the retraction of the connecting rod 2, avoiding the problem of the connecting rod 2 being 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. During use, when the temperature of the measuring device body 1 is high, the temperature sensor 16 senses it and activates the exhaust fan 14 to dissipate heat from within the measuring device body 1, preventing prolonged high temperatures from 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 has the effect of insulation, avoiding the problem that the accuracy of the temperature measurement by the sensor 4 is affected by 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 interior of the connecting rod 2 through the first slot 12, then hold the telescopic rod 3 and slowly pull the telescopic rod 3 out from the interior 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 in it, thus completing the extension of the connecting rod 2. When the connecting rod 2 needs to be retracted, you can first pinch the push rods 11 on both sides so that the push block 10 squeezes the spring 9, and then slowly insert the telescopic rod 3 into the interior 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 slot 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 long and inconvenient to carry, and improving the convenience of carrying. 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 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 this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of this application.

[0064] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A downhole high temperature measuring device, characterized in that: These include, The measuring device body includes a shell with a heat dissipation hole, 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 passes through the cylindrical wall transversely, and the lower end is provided with a second slot hole that passes through the cylindrical wall transversely. The telescopic rod is inserted into the connecting rod. A spring sleeve is provided at the top of the telescopic rod, a spring is provided in the spring sleeve, push blocks are provided on both sides of the spring, the push blocks are fixedly connected to the push rod on the side opposite to the spring, and the push rod passes through the spring sleeve and extends out of the first slot or the second slot. A sensor is provided 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. The 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 measurement device according to claim 1, characterized in that: Two groups of springs are symmetrically arranged inside the spring sleeve.

4. The 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 measurement device according to claim 1, characterized in that: Three groups of heat dissipation holes are opened 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: An insulation layer is laid inside the insulation cover.

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

8. The downhole high-temperature measurement device according to claim 1, characterized in that: The measuring device body includes 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 measurement device according to claim 1, characterized in that: The downhole high temperature measuring device has a symmetrical structure.

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