Power generation device of high-temperature underground measurement-while-drilling instrument

Abstract

The utility model relates to a power generation device of a high-temperature underground measurement-while-drilling instrument. According to the technical scheme, one end of a stator fixing seat is fixedly connected with a stator framework, a plurality of high-temperature enameled wire windings are wound on the stator framework, an annular anti-falling frame is installed at the right end of the stator framework, tile-shaped magnetic steel and a rotor yoke are installed on the left side of the anti-falling frame, and the tile-shaped magnetic steel is located on the inner ring of the rotor yoke; the left end of the rotor yoke is connected with the rotor fixing disc through a first fixing bolt, the left end of the rotor fixing disc is connected with an output shaft of the motor, and the motor drives the rotor fixing disc and the rotor yoke to rotate. The beneficial effects are that under the driving of the motor, the rotor fixing disc and the rotor yoke rotate, magnetic lines of force are cut, power generation of the power generation device is realized, and the working requirements of gamma and resistivity modules in a deep well can be met; as the lithium battery is positioned at a position closer to the ground, the time cost for replacing the lithium battery is lower; and the requirement of high-temperature work is met, and the drilling cost is reduced.

Description

Technical Field

[0001] The utility model relates to a power generation device for a measurement-while-drilling instrument, in particular to a power generation device for a high-temperature downhole measurement-while-drilling instrument. Background Art

[0002] During the process of oil drilling, especially during the drilling of horizontal wells, extended reach wells, etc., it is necessary to master the drilling parameters in real time through a measurement-while-drilling system, so as to control parameters such as the weight on bit, rotary speed, and drilling fluid displacement in a timely manner. However, the power supply system of downhole measurement-while-drilling instruments has always been an important problem for the continuous operation of the equipment. In addition, during the use of high-temperature downhole measurement-while-drilling instruments, it is often necessary to add gamma and resistivity modules. If the existing lithium batteries are used to supply power to these modules, it is difficult to meet the working requirements of the gamma and resistivity modules at deep wells. In addition, the deeper the well depth, the higher the temperature. Generally, for wells with a depth of 2000 - 3000 meters, the temperature is mostly between 60 - 80 degrees. However, as the drilling depth increases, the downhole temperature sometimes reaches nearly 200 degrees Celsius. The existing power supply system is difficult to meet the requirements, and lithium batteries cannot directly work at this temperature, but can work at a depth of 2000 - 3000 meters. Therefore, it is necessary to provide a power generation device for a high-temperature downhole measurement-while-drilling instrument to meet the power supply needs of gamma and resistivity modules. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a power generation device for a high-temperature downhole measurement-while-drilling instrument aiming at the above-mentioned defects existing in the prior art. By combining a lithium battery located in a well with a depth of 2000 - 3000 meters and a power generation device located deep down, it can meet the power supply needs of gamma and resistivity modules at deep wells.

[0004] A power generation device for a high-temperature downhole measurement-while-drilling instrument mentioned in the utility model has the following technical solution: It includes a rotor fixing plate (1), a first fixing bolt (2), a rotor yoke (3), a tile-shaped permanent magnet (4), an anti-detachment frame (5), a stator skeleton (6), a stator fixing seat (7), and a high-temperature enameled wire winding (8). One end of the stator fixing seat (7) is fixedly connected to the stator skeleton (6). A plurality of high-temperature enameled wire windings (8) are wound on the stator skeleton (6). An annular anti-detachment frame (5) is installed at the right end of the stator skeleton (6). A tile-shaped permanent magnet (4) and a rotor yoke (3) are installed on the left side of the anti-detachment frame (5). The tile-shaped permanent magnet (4) is located inside the rotor yoke (3). The left end of the rotor yoke (3) is connected to the rotor fixing plate (1) through the first fixing bolt (2). The left end of the rotor fixing plate (1) is connected to the output shaft of the motor. The motor drives the rotor fixing plate (1) and the rotor yoke (3) to rotate.

[0005] Preferably, nine wire grooves (6.1) are provided on the outer wall of the stator skeleton (6), and a high-temperature enameled wire winding (8) is wound thereon; a fixed joint (6.2) is provided at one end of the stator skeleton (6), and is connected to the outer joint of the stator fixing base (7) through the fixed joint (6.2).

[0006] Preferably, the fixed joint (6.2) and the outer joint of the stator fixing base (7) are connected by a second fixing bolt (9).

[0007] Preferably, the high-temperature enameled wire winding (8) is wound in a three-phase star shape.

[0008] Preferably, a tile-shaped permanent magnet (4) is installed on the left side of the anti-disengagement frame (5) through an embedded fit, and the tile-shaped permanent magnets (4) are installed alternately in the order of N pole and S pole from the outside to the inside.

[0009] Preferably, the inside of the rotor yoke (3) is coated with a permanent magnet adhesive and is fixedly contacted with the tile-shaped permanent magnet (4) through the permanent magnet adhesive.

[0010] The beneficial effects of the present utility model are as follows: the outer end of the rotor fixing disc is connected and fixed to the output shaft of the motor, and the power supply of the motor can be supplied by a lithium battery located at a depth of 2000-3000 meters, and is connected to the motor through a cable. Driven by the motor, the rotor fixing disc and the rotor yoke rotate, thereby cutting the magnetic force lines to realize the power generation of the power generation device, so as to meet the working needs of the gamma and resistivity modules at the deep well; and the above lithium battery can meet the working time of 200-300 hours. Then, the lithium battery is replaced by tripping according to the on-site situation. Since the lithium battery is located closer to the ground, the time cost of replacing the lithium battery is lower; it not only meets the needs of high-temperature work, but also reduces the construction cost and the drilling cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic structural diagram of the stator skeleton without the high-temperature enameled wire winding installed;

[0013] Figure 3 is a schematic structural diagram of the tile-shaped permanent magnet;

[0014] In the above figures: rotor fixing disc 1, first fixing bolt 2, rotor yoke 3, tile-shaped permanent magnet 4, anti-disengagement frame 5, stator skeleton 6, stator fixing base 7, high-temperature enameled wire winding 8, second fixing bolt 9, wire groove 6.1, fixed joint 6.2. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0016] Embodiment 1. Refer to Figures 1 - 3 , a power generation device for a high-temperature downhole measurement-while-drilling instrument mentioned in the present utility model, includes a rotor fixing plate 1, a first fixing bolt 2, a rotor yoke 3, tile-shaped permanent magnets 4, an anti-disengagement frame 5, a stator skeleton 6, a stator fixing seat 7, and a high-temperature enameled wire winding 8. One end of the stator fixing seat 7 is fixedly connected to the stator skeleton 6. A plurality of high-temperature enameled wire windings 8 are wound around the stator skeleton 6. An annular anti-disengagement frame 5 is installed at the right end of the stator skeleton 6. The tile-shaped permanent magnets 4 and the rotor yoke 3 are installed on the left side of the anti-disengagement frame 5. The tile-shaped permanent magnets 4 are located inside the inner ring of the rotor yoke 3. The left end of the rotor yoke 3 is connected to the rotor fixing plate 1 through the first fixing bolt 2. The left end of the rotor fixing plate 1 is connected to the output shaft of the motor. The motor drives the rotor fixing plate 1 and the rotor yoke 3 to rotate.

[0017] Refer to Figure 2 , the outer wall of the stator skeleton 6 mentioned in the present utility model is provided with nine wire grooves 6.1, and high-temperature enameled wire windings 8 are wound thereon; a fixed joint 6.2 is provided at one end of the stator skeleton 6, and is connected in cooperation with the outer joint of the stator fixing seat 7 through the fixed joint 6.2.

[0018] In addition, the above-mentioned fixed joint 6.2 and the outer joint of the stator fixing seat 7 are connected by a second fixing bolt 9.

[0019] The above-mentioned high-temperature enameled wire winding 8 is wound in a three-phase star connection.

[0020] In addition, the tile-shaped permanent magnets 4 are installed on the left side of the above-mentioned anti-disengagement frame 5 through an embedded fit, and the tile-shaped permanent magnets 4 are installed alternately from the outside to the inside in the order of N poles and S poles.

[0021] The inside of the above-mentioned rotor yoke 3 is coated with a magnet adhesive, and is fixedly contacted with the tile-shaped permanent magnets 4 through the magnet adhesive.

[0022] When the utility model is in use, the measurement-while-drilling instrument mentioned in the utility model is located on the upper side of the drill bit, and is equipped with gamma and resistivity modules. Its power supply device adopts the power generation device mentioned in the utility model. The outer end of the rotor fixing disk 1 is fixedly connected to the output shaft of the motor. The power supply of the motor can be powered by a lithium battery located at a depth of 2000 - 3000 meters and connected to the motor through a cable. Driven by the motor, the rotor fixing disk 1 and the rotor yoke 3 rotate, thereby cutting the magnetic field lines to realize the power generation of the power generation device, so as to meet the working requirements of the gamma and resistivity modules at the deep well. And the above lithium battery can meet the working time of 200 - 300 hours. Then, the lithium battery is replaced by tripping out of the well according to the on-site situation. Since the lithium battery is located closer to the ground, the time cost of replacing the lithium battery is lower.

[0023] Embodiment 2, a power generation device for a high-temperature downhole measurement-while-drilling instrument mentioned in the utility model, includes a rotor fixing disk 1, a first fixing bolt 2, a rotor yoke 3, a tile-shaped permanent magnet 4, an anti-disengagement frame 5, a stator skeleton 6, a stator fixing seat 7, and a high-temperature enameled wire winding 8. One end of the stator fixing seat 7 is fixedly connected to the stator skeleton 6. A plurality of high-temperature enameled wire windings 8 are wound on the stator skeleton 6. An annular anti-disengagement frame 5 is installed at the right end of the stator skeleton 6. A tile-shaped permanent magnet 4 and a rotor yoke 3 are installed on the left side of the anti-disengagement frame 5. The tile-shaped permanent magnet 4 is located inside the rotor yoke 3. The left end of the rotor yoke 3 is connected to the rotor fixing disk 1 through the first fixing bolt 2. The left end of the rotor fixing disk 1 is connected to the output shaft of the motor. The rotor fixing disk 1 and the rotor yoke 3 are driven to rotate by the motor.

[0024] The difference from Embodiment 1 is:

[0025] In this embodiment, seven wire grooves 6.1 are provided on the outer wall of the stator skeleton 6, and high-temperature enameled wire windings 8 are wound on them. A fixed joint 6.2 is provided at one end of the stator skeleton 6 and is connected to the outer joint of the stator fixing seat 7 through the fixed joint 6.2, which can also meet the usage requirements. In addition, the first fixing bolt 2 is a cross recessed bolt, making disassembly and assembly more convenient.

[0026] The above are only the preferred embodiments of the utility model. Any person skilled in the art may modify the utility model by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent transformation made according to the technical solutions of the utility model falls within the scope of protection required by the utility model.

Claims

1. A power generation device for a downhole measurement-while-drilling instrument at high temperature, characterized in that: It includes a rotor fixing disc (1), a first fixing bolt (2), a rotor yoke (3), tile-shaped permanent magnets (4), an anti-disengagement frame (5), a stator skeleton (6), a stator fixing seat (7), and a high-temperature enameled wire winding (8). One end of the stator fixing seat (7) is fixedly connected to the stator skeleton (6). A plurality of high-temperature enameled wire windings (8) are wound around the stator skeleton (6). An annular anti-disengagement frame (5) is installed at the right end of the stator skeleton (6). A tile-shaped permanent magnet (4) and a rotor yoke (3) are installed on the left side of the anti-disengagement frame (5). The tile-shaped permanent magnet (4) is located inside the inner ring of the rotor yoke (3). The left end of the rotor yoke (3) is connected to the rotor fixing disc (1) by a first fixing bolt (2). The left end of the rotor fixing disc (1) is connected to the output shaft of the motor. The motor drives the rotor fixing disc (1) and the rotor yoke (3) to rotate.

2. The power generation device of the high-temperature downhole measurement-while-drilling instrument according to claim 1, characterized in that: Nine wire grooves (6.1) are provided on the outer wall of the stator skeleton (6), and high-temperature enameled wire windings (8) are wound thereon; a fixing joint (6.2) is provided at one end of the stator skeleton (6), and it is connected to the outer joint of the stator fixing seat (7) through the fixing joint (6.2).

3. The power generation device of the high-temperature downhole measurement-while-drilling instrument according to claim 2, wherein: The fixing joint (6.2) and the outer joint of the stator fixing seat (7) are connected by a second fixing bolt (9).

4. The power generation device of the high-temperature downhole measurement-while-drilling instrument according to claim 3, characterized in that: The high-temperature enameled wire winding (8) is wound in a three-phase star shape.

5. The power generation device of the high-temperature downhole measurement-while-drilling instrument according to claim 4, characterized in that: The tile-shaped permanent magnet (4) is installed on the left side of the anti-disengagement frame (5) through an embedded fit, and the tile-shaped permanent magnets (4) are installed alternately with N poles and S poles from the outside to the inside in sequence.

6. The power generation device of the high-temperature downhole measurement-while-drilling instrument according to claim 5, characterized in that: The inside of the rotor yoke (3) is coated with a magnet adhesive, and it is fixedly contacted with the tile-shaped permanent magnet (4) through the magnet adhesive.

Images