Well temperature measuring instrument for well logging

Abstract

The well temperature measuring instrument comprises an installation rod and a temperature sensor, the temperature sensor is fixedly arranged at the lower end inside the installation rod, and limiting seats are fixedly arranged on the left side and the right side of the lower end outside the installation rod. Through the design of an adjusting function, the first rotating rod, the second rotating rod, the first rolling wheel and the second rolling wheel can be switched from a folded state to an unfolded state, and then the first rolling wheel and the second rolling wheel can be matched with well mouths with different diameters for use; therefore, the temperature sensor can measure the temperature in well mouths with different diameters. Through mutual cooperation of a first baffle and a second baffle, a mounting rod and a temperature sensor can be prevented from being separated from a positioning plate, the temperature sensor is prevented from falling into a well body, the temperature sensor is protected, after the device is used, a worker can screw a screw pin into a threaded hole, and the temperature sensor is prevented from falling into the well body. In this way, the mounting rod and the positioning plate are locked after being attached to each other and stored.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measuring devices, in particular to a well temperature measuring instrument for well logging. Background Art

[0002] Well temperature logging is a method that uses the temperature variation with depth within a borehole to study geological structures, rock formation properties, identify useful minerals, and verify the technical status of the borehole. It uses a downhole instrument equipped with a temperature sensor to measure the wellbore temperature (usually the wellbore fluid temperature) and its spatial distribution along the well axis or circumference. However, existing measuring instruments have poor protection for their sensors. If the sensor contacts the wellbore wall during operation, it can cause damage to the device and affect the measurement results.

[0003] The patent, published under the publication number "CN220036653U," is titled "A Well Temperature Logging Instrument." While the device described in this publication addresses the aforementioned issues, the distance the stopper can move along the blind hole is limited, preventing the overall device from adjusting to a wide range of diameters. This in turn makes the device incompatible with wellbores of varying diameters, reducing its effectiveness. Based on this, the present utility model designs a well temperature measuring instrument for well logging to address these issues. Utility Model Content

[0004] The purpose of the present invention is to provide a well temperature measuring instrument for well logging, so as to solve the problems raised by the above-mentioned background technology.

[0005] The control rod of the said invention can change the control rod into the control rod, and the control rod has the function of adjusting the position of the first control rod and the control rod respectively.

[0006] Furthermore, the first roller and the second roller are made of plastic and have a deformable function, and the cross-sections of the connecting block and the guide groove are T-shaped.

[0007] Furthermore, a pull rope is fixedly provided on the top of the installation rod, a cable is fixedly passed through the top of the pull rope, and the cable is connected to the temperature sensor through a wire.

[0008] Furthermore, a positioning plate is sleeved on the outer upper end of the pull rope, a controller is fixed on the top of the positioning plate, and the controller is connected to the cable through a wire.

[0009] Furthermore, the upper outer end fixing sleeve of the mounting rod is provided with a first baffle, and the upper outer end fixing sleeve of the pull rope is provided with a second baffle. The first baffle and the second baffle are of the same size, and the first baffle and the second baffle are concentric with the positioning plate.

[0010] Furthermore, a sealing cover is provided on the threaded sleeve at the lower end of the outer portion of the mounting rod, and a scale is integrally provided inside the pull rope from top to bottom.

[0011] Furthermore, a screw pin is threaded through the right side of the top of the positioning plate, and a threaded hole is integrally provided on the right side of the inside of the first baffle, and the threaded hole and the screw pin correspond to each other one to one.

[0012] Furthermore, a clearance hole is integrally provided on the right side inside the second baffle, and the clearance hole is designed as a through hole, and the clearance hole and the threaded hole correspond to each other one to one.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present invention, through the design of the adjustment function, can switch the first rotating rod and the second rotating rod together with the first roller and the second roller from a stored state to an expanded state, thereby allowing the first roller and the second roller to be matched with wellheads of different diameters. It can be seen that by using the device in this application, the temperature sensor can measure the temperature inside wellheads of different diameters.

[0015] 2. The utility model can prevent the installation rod and the temperature sensor from separating from the positioning plate through the cooperation of the first baffle and the second baffle, and prevent the temperature sensor from falling into the well body, thereby protecting the temperature sensor. When the device is finished using, the staff can screw the screw into the threaded hole to lock the installation rod and the positioning plate in a state where they are fitted together and stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a front perspective view of a well temperature measuring instrument for well logging according to the present invention;

[0018] Figure 2 It is an exploded perspective view of the connecting block and the guide groove;

[0019] Figure 3 It is an expanded three-dimensional view of the first rotating rod and the second rotating rod;

[0020] Figure 4 A perspective view of the mounting rod and temperature sensor;

[0021] Figure 5 This is a three-dimensional view of the interior of the installation sleeve.

[0022] In the accompanying drawings, the components represented by the respective reference numerals are listed as follows:

[0023] 1-Mounting rod, 2-Temperature sensor, 3-Limiting seat, 4-First rotating rod, 5-First rotating pin, 6-Limiting plate, 7-First roller, 8-Drive assembly, 801-Slide, 802-Connecting block, 803-Mounting sleeve, 804-Guide groove, 805-Second rotating rod, 806-Second rotating pin, 807-Second roller, 9-Pull rope, 10-Cable, 11-Positioning plate, 12-Controller, 13-First baffle, 14-Second baffle, 15-Sealing cover, 16-Scale, 17-Screw, 18-Threaded hole, 19-Gap hole. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying 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.

[0025] Example 1

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5As shown, the device includes a mounting rod 1 and a temperature sensor 2. The temperature sensor 2 is fixedly mounted on the lower end of the mounting rod 1. A limit seat 3 is fixedly mounted on the left and right sides of the lower end of the mounting rod 1. A first rotating rod 4 is connected to the limit seat 3. The first rotating rod 4 is rotated through the end away from the limit seat 3. A first rotating pin 5 is rotated through the front and rear ends of the first rotating pin 5. A limit plate 6 is rotated on the middle end of the first rotating pin 5. A driving assembly 8 is rotated on the outer wall of the mounting rod 1. The driving assembly 8 includes a sliding member arranged on the left and right sides of the upper end of the mounting rod 1. The slide 801 has a connecting block 802 fixed on the top of the slide 801, a mounting sleeve 803 is threadedly sleeved on the upper end of the outer side of the mounting rod 1, and a guide groove 804 is integrally provided on the lower end of the inner side of the mounting sleeve 803. The guide groove 804 is slidably sleeved on the outside of the connecting block 802. A second rotating rod 805 is connected to the inside of the slide 801, and a second rotating pin 806 is rotated through the end of the second rotating rod 805 away from the slide 801, and the second rotating pin 806 rotates through the upper end of the limit plate 6, and a second roller 807 is fixedly sleeved on the outer middle end of the second rotating pin 806.

[0027] The first roller 7 and the second roller 807 are made of deformable plastic. The cross-sections of the connecting block 802 and the guide slot 804 are T-shaped. The temperature sensor 2 is embedded in the exterior of the mounting rod 1, allowing the mounting rod 1 to protect the outer wall of the temperature sensor 2. During use, the operator first rotates the mounting sleeve 803 forward. The mounting sleeve 803 drives the guide slot 804 to push the connecting block 802, which in turn moves the slide 801 and the second rotating rod 805, along with the first rotating pin 5, the stop plate 6, the second rotating pin 806, and the second rotating rod 805, from a stowed state to an extended state. This means that the first rotating pin 5 and the second rotating pin 806 drive the first roller 7 and the second roller 807 to move in the opposite direction along the mounting rod 1 until the spacing between the axes of the first rotating pin 5 and the second rotating pin 806 and the mounting rod 1 is adjusted to the operator's desired distance. The operator then releases the mounting sleeve 803. This allows the first roller 7 and the second roller 807 to fit snugly against the wellbore walls of varying diameters.

[0028] Example 2

[0029] like Figure 1 、 Figure 4 、 Figure 5As shown, a pull rope 9 is fixed on the top of the mounting rod 1, and a cable 10 is fixedly passed through the top of the pull rope 9. The cable 10 is connected to the temperature sensor 2 through a wire. A positioning plate 11 is sleeved on the outer upper end of the pull rope 9. A controller 12 is fixed on the top of the positioning plate 11. The controller 12 is connected to the cable 10 through a wire. A first baffle 13 is fixedly sleeved on the outer upper end of the mounting rod 1, and a second baffle 14 is fixedly sleeved on the outer upper end of the pull rope 9. The first baffle 13 and the second baffle 14 are of the same size. The first baffle 13 is The second baffle 14 and the positioning plate 11 are in a concentric design, the outer lower end of the mounting rod 1 is threadedly sleeved with a sealing cover 15, the inside of the pull rope 9 is integrally provided with a scale 16 from top to bottom, a screw pin 17 is threaded through the top right side of the positioning plate 11, a threaded hole 18 is integrally provided on the right side of the first baffle 13, and the threaded hole 18 and the screw pin 17 correspond one to one with each other, and a clearance hole 19 is integrally provided on the right side of the second baffle 14, and the clearance hole 19 is a through hole design, and the clearance hole 19 and the threaded hole 18 correspond one to one with each other.

[0030] According to the operation method in Example 1, when the distance between the first roller 7 and the second roller 807 and the mounting rod 1 is adjusted, the staff first separates the sealing cover 15 from the mounting rod 1, so that the monitoring end of the temperature sensor 2 is exposed to the outside world, and then places the positioning plate 11 on the top of the well body, that is, the mounting rod 1 is inserted into the wellhead. At the same time, the first roller 7 and the second roller 807 are in contact with the inner wall of the well body. The staff then holds the pull rope 9 with the right hand and rotates the screw 17 with the left hand to separate the screw 17 from the threaded hole 18, that is, the fixed state of the positioning plate 11 and the mounting rod 1 after being in contact and stored is released, and then slowly moves the pull rope 9 together with the mounting rod 1 downward along the direction of the well body with both hands, so that the temperature sensor 2 monitors different depths inside the well body, and the monitored values ​​are transmitted to the controller 12 through the cable 10. In addition, the staff can move the temperature sensor 2 to the depth inside the well body for control under the guidance of the scale 16. The first baffle 13 and the second baffle 14 can prevent the installation rod 1 together with the pull rope 9 from being separated from the positioning plate 11 , and the positioning hole 19 leaves space for the screw pin 17 .

Claims

1. A well temperature measuring instrument for well logging, comprising a mounting rod (1) and a temperature sensor (2), characterized in that: The temperature sensor (2) is fixed to the lower end of the interior of the mounting rod (1), and a limit seat (3) is fixed on the left and right sides of the lower end of the exterior of the mounting rod (1). A first rotating rod (4) is connected to the interior of the limit seat (3), and a first rotating pin (5) is rotated through the end of the first rotating rod (4) away from the limit seat (3), and a limit plate (6) is rotatably sleeved on the front and rear ends of the exterior of the first rotating pin (5), and a first roller (7) is rotatably sleeved on the middle end of the exterior of the first rotating pin (5). A driving assembly (8) is provided on the outer wall of the mounting rod (1), and the driving assembly (8) includes a slide seat (801) slidably arranged on the left and right sides of the upper end of the exterior of the mounting rod (1). A connecting block (802) is fixed on the top of the slide (801), a mounting sleeve (803) is threadedly sleeved on the outer upper end of the mounting rod (1), a guide groove (804) is integrally provided on the inner lower end of the mounting sleeve (803), and the guide groove (804) is slidably sleeved on the outside of the connecting block (802), a second rotating rod (805) is connected to the inside of the slide (801), and a second rotating pin (806) is rotatably passed through the end of the second rotating rod (805) away from the slide (801), and the second rotating pin (806) is rotatably passed through the upper end of the limit plate (6), and a second roller (807) is fixedly sleeved on the outer middle end of the second rotating pin (806).

2. A well temperature measuring instrument for well logging according to claim 1, characterized in that: The first roller (7) and the second roller (807) are made of plastic material and have a deformable function. The cross-sections of the connecting block (802) and the guide groove (804) are T-shaped.

3. The well temperature measuring instrument for well logging according to claim 1, characterized in that: A pull rope (9) is fixedly provided on the top of the installation rod (1), a cable (10) is fixedly passed through the top of the pull rope (9), and the cable (10) is connected to the temperature sensor (2) via a wire.

4. A well temperature measuring instrument for well logging according to claim 3, characterized in that: A positioning plate (11) is sleeved on the outer upper end of the pull rope (9), a controller (12) is fixed on the top of the positioning plate (11), and the controller (12) is connected to the cable (10) through a wire.

5. The well temperature measuring instrument for well logging according to claim 3, characterized in that: The outer upper end of the mounting rod (1) is fixedly sleeved with a first baffle (13), and the outer upper end of the pull rope (9) is fixedly sleeved with a second baffle (14). The first baffle (13) and the second baffle (14) are of the same size, and the first baffle (13) and the second baffle (14) are concentrically designed with the positioning plate (11).

6. A well temperature measuring instrument for well logging according to claim 3, characterized in that: The lower end of the outer portion of the mounting rod (1) is threadedly sleeved with a sealing cover (15), and a scale (16) is integrally provided inside the pull rope (9) from top to bottom.

7. A well temperature measuring instrument for well logging according to claim 5, characterized in that: A screw pin (17) is threaded through the right side of the top of the positioning plate (11), and a threaded hole (18) is integrally provided on the right side inside the first baffle (13), and the threaded hole (18) and the screw pin (17) correspond to each other one by one.

8. The well temperature measuring instrument for well logging according to claim 5, characterized in that: A clearance hole (19) is integrally provided on the right side of the interior of the second baffle (14). The clearance hole (19) is a through hole design, and the clearance hole (19) and the threaded hole (18) correspond to each other one to one.

Images