Ground pulse signal detection device

Abstract

The invention relates to the technical field of water drive reservoir oil extraction, in particular to a ground pulse signal detection device which comprises a detection component and a dial indicator device, the dial indicator device comprises a dial indicator and a dial indicator extension bar, the detection component comprises an end cover, an outer cylinder and a proximity switch, the proximity switch is arranged in the outer cylinder, and the end cover is arranged at the left end of the outer cylinder; the center of the left end face of the end cover is provided with a circular through hole, a dial indicator and a dial indicator lengthening rod are inserted into the outer cylinder through the through hole, the right end of the end cover is provided with a switch connecting plate integrated with the end cover, the switch connecting plate is provided with a proximity switch, the proximity switch is fixedly connected with the switch connecting plate, and a power supply signal line is arranged in a wire hole in the left end face of the end cover. The ground pulse signal detection device is connected with the pulser, the distance signal generated by the telescopic action of the pulser is converted into the electric signal, the pulser is detected by simulating the action of the pulser on the ground, the detection process of the pulser is simplified, and the labor intensity of the detection work is reduced.

Description

Technical Field

[0001] This invention relates to the field of water-drive oil reservoir production technology, and in particular to a ground pulse signal detection device. Background Technology

[0002] Measurement while drilling (MSW) technology plays a crucial role in oil and gas exploration and development. It allows drilling teams to acquire downhole information in real time during the drilling process, thereby optimizing the drilling trajectory, improving drilling efficiency, and ensuring well control safety. Mud pulse transmission is one of the most commonly used downhole signal transmission methods. It relies on a pulse generator to generate pressure fluctuations in the drilling fluid. These fluctuations carry data information, which is decoded by surface equipment to obtain drilling parameters and geological data. The working principle of a pulse generator typically involves a mechanical component, such as a telescopic valve or rotary valve, which generates pressure pulses by changing the flow state of the drilling fluid. These pulses propagate within the drill string and are captured by pressure sensors on the surface. These sensors convert the pressure signals into electrical signals and transmit them to a surface decoding box for processing. The decoding box parses the data encoding in these signals and converts them into readable information for use by the drilling team. To ensure that the pulse generator can work properly downhole, surface testing is an essential step. Traditional testing methods require the measurement-while-drilling instrument to be fully assembled and placed in a circulation manifold system that simulates the downhole environment. While this method can accurately evaluate the pulse generator performance, it does have problems such as complex operation, long time consumption, and the need for more manpower and resources. Summary of the Invention

[0003] (a) Technical problems to be solved This invention provides a ground pulse signal detection device to overcome the problems of existing technologies that require the use of a circulating manifold system simulating a downhole environment for detection, which is complex, time-consuming, and requires a lot of manpower and resources.

[0004] (II) Technical Solution To achieve the above objectives, the present invention provides a ground pulse signal detection device, comprising: a detection component and a dial indicator device; The dial indicator device includes: a dial indicator and a dial indicator extension rod, wherein the dial indicator extension rod is located at the right end of the dial indicator; The detection component includes: an end cap, an outer cylinder, and a proximity switch. The outer cylinder has a circular through hole in its center outer wall, and the proximity switch is located inside the outer cylinder. The outer cylinder is provided with an end cap on the left end. The end cap is a cylindrical structure and has a circular through hole at the center of the left end face. The right end of the dial indicator and the dial indicator extension rod are inserted into the outer cylinder through the circular through hole. The right end of the end cover is provided with a switch connecting plate, which is integral with the end cover. The switch connecting plate is provided with a proximity switch, which is fixedly connected to the switch connecting plate. The left end face of the end cap has a wire hole, and a power supply signal line is provided in the wire hole. One end of the power supply signal line is connected to a proximity switch, and the other end is connected to the test host. The proximity switch has a target disk on its right end, and a small shaft on the right end of the target disk. The small shaft is embedded in the outer cylinder, and a return spring is sleeved on the outer wall of the right end of the small shaft.

[0005] Preferably, the dial indicator extension rod is a cylindrical structure with a tapered structure at the right end and a thread at the left end, and the dial indicator extension rod is threadedly connected to the dial indicator.

[0006] Preferably, a transparent circular partition is embedded in the circular through hole on the outer wall of the outer cylinder, through which the interior of the outer cylinder can be observed.

[0007] Preferably, the outer cylinder is a hollow cylindrical structure with a rectangular notch on one side. The right end of the switch connecting plate is inserted into the rectangular notch on one side of the outer cylinder, and the inner wall of the left end of the end cap is in close contact with the left end of the outer cylinder.

[0008] Preferably, the end cap sidewall is provided with a through hole, and a fixing bolt is provided in the through hole, the fixing bolt positioning the dial indicator.

[0009] Preferably, the small shaft is a cylindrical structure with a thread on the left end, and the small shaft is threadedly connected to the target disk.

[0010] Preferably, the inner wall of the outer cylinder is provided with a step, and the step limits the return spring.

[0011] Preferably, the target disk consists of two parts: a disc structure on the left and a cylindrical structure on the right. The right end of the cylindrical structure is provided with a thread, which matches the thread provided on the left end of the small shaft.

[0012] Preferably, the tapered structure at the right end of the dial indicator extension rod is closely attached to the left end of the target disc. (III) Beneficial Effects This invention provides a ground pulse signal detection device. By connecting the device to a pulse generator, the small shaft in the detection device is tightly pressed against the valve rod inside the pulse generator. When the valve rod extends, it pushes the small shaft, causing the target disk on the left end of the small shaft to approach a proximity switch. This action triggers the proximity switch to generate a pulse signal, thereby recording the working state of the pulse generator. When the pulse generator valve rod retracts, the reset spring in the device drives the small shaft back to its initial position. At this time, the proximity switch does not generate a pulse signal. Through this reciprocating motion, the device can continuously generate a series of pulse signals and transmit these signals to the test host for analysis and processing via the power supply signal line. To ensure the accuracy and reliability of the testing process, the device is also equipped with a dial indicator and a dial indicator extension rod. The dial indicator and dial indicator extension rod can check the stroke of the target disk at any time to ensure that the extension and retraction of the pulser is not hindered in any way, thereby improving the accuracy of the test results. By using the ground pulse signal detection device, not only is the pulser testing process simplified, but the labor intensity of the testing work is also reduced. Attached Figure Description

[0013] Figure 1 This diagram illustrates the structure of a ground pulse signal detection device according to the present invention. Figure 2 The diagram shows a signal detection circuit of a ground pulse signal detection device according to the present invention.

[0014] The components are: 1: dial indicator; 2: end cap; 3: switch connection plate; 4: outer cylinder; 5: proximity switch; 6: dial indicator extension rod; 7: target disk; 8: small shaft; 9: return spring; 10: power supply signal line. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the description of this invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "inner," "outer," "top," and "bottom" are based on the orientations or positional relationships shown in the accompanying drawings. They are intended only to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the components referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] like Figure 1-2As shown, the present invention provides a ground pulse signal detection device, comprising: a detection component and a dial indicator device; The dial indicator device includes a dial indicator 1 and a dial indicator extension rod 6, which is located at the right end of the dial indicator 1. The dial indicator 1 and the extension rod 6 can check the stroke of the target disk 7 at any time, ensuring that the extension and retraction of the pulser is not obstructed, thereby improving the accuracy of the test results. The detection component includes: end cap 2, outer cylinder 4, and proximity switch 5. The outer cylinder 4 is a hollow cylindrical structure, which provides installation space for other internal components and ensures the stability and durability of the overall structure. A rectangular notch is provided on one side of the outer cylinder 4 for installing the switch connecting plate 3. The right end of the end cap 2 is provided with the switch connecting plate 3, which is integrated with the end cap 2. This integrated design not only enhances the overall structure but also improves the sealing performance of the device, preventing external impurities from entering the interior and affecting the detection accuracy. The right end of the switch connecting plate 3 is inserted into the rectangular notch on one side of the outer cylinder 4, and the inner wall of the left end of the end cap 2 is close to the left end of the outer cylinder 4. The end cap 2 serves to seal the outer cylinder 4. The outer cylinder 4 has a circular through hole on its central outer wall. A transparent circular partition is embedded in the circular through hole, providing an observation window for the operator to monitor the internal condition of the outer cylinder 4 in real time. The outer cylinder 4 is equipped with a proximity switch 5, which is an important component of the detection component. The proximity switch 5 generates a pulse signal by sensing the position change of the target disk 7, thereby monitoring the working status of the pulse generator. The proximity switch 5 is equipped with an indicator light. This design not only simplifies the signal transmission path but also effectively reduces the impact of external interference on the detection results, improving the reliability and accuracy of the detection. The outer cylinder 4 has an end cap 2 on its left end. The end cap 2 is cylindrical and has a circular through hole at the center of its left end face. The right end of the dial indicator 1 and the dial indicator extension rod 6 are inserted into the outer cylinder 4 through the circular through hole. The dial indicator extension rod 6 is cylindrical and has a tapered structure at its right end. The left end of the dial indicator extension rod 6 is threaded and is threaded to the dial indicator 1. The side wall of the end cap 2 has a through hole with a fixing bolt in it, which positions the dial indicator 1. The right end of the end cover 2 is provided with a switch connecting plate 3, which is integrally formed with the end cover 2. A proximity switch 5 is provided on the switch connecting plate 3 and is fixedly connected to it. A wire hole is located on the left end face of the end cover 2, through which a power supply signal line 10 is installed. One end of the power supply signal line 10 is connected to the proximity switch 5, and the other end is connected to the test host. A target disk 7 is provided on the right end of the proximity switch 5. The tapered structure on the right end of the dial indicator extension rod 6 is closely attached to the left end of the target disk 7. The target disk 7 consists of two parts: a disc structure on the left and a cylindrical structure on the right. The right end of the cylindrical structure is threaded, which matches the thread on the left end of the small shaft 8. The right end of the target disk 7 is equipped with a small shaft 8, which is cylindrical and threaded on the left end. The small shaft 8 is threaded to the target disk 7 and is embedded in the outer cylinder 4. A return spring 9 is fitted on the outer wall of the right end of the small shaft 8. The inner wall of the outer cylinder 4 is provided with a step, which limits the return spring 9. The return spring 9 resets the small shaft 8. In this ground pulse signal detection device, the end cap 2 at the left end of the outer cylinder 4 serves to seal and protect the internal components. The center of the end cap 2 has a circular through hole, allowing the dial indicator 1 and the dial indicator extension rod 6 to be inserted into the outer cylinder 4 through the through hole. The right end of the dial indicator extension rod 6 has a tapered structure, and the left end has a thread, which connects to the dial indicator 1 by thread. This connection method is not only firm and reliable, but also facilitates the installation and disassembly of the dial indicator 1. The side wall of the end cap 2 has a through hole with a fixing bolt for positioning the dial indicator 1 and ensuring its stability during operation. This design effectively prevents the dial indicator 1 from shifting when subjected to external forces, thereby ensuring the accuracy of the detection results.

[0018] like Figure 2 As shown, the ground pulse signal detection device includes a signal detection circuit. In the signal detection circuit, the VIN pin of J1 is connected to the signal output terminal of the proximity switch 5. The pulse signal generated by the proximity switch 5 is input into the signal detection circuit through the VIN pin of J1. Then, by controlling the conduction and cutoff of the field-effect transistor Q1, the pulse signal is processed and converted. At the VOUT pin of J2, a pulse signal with the same frequency but different amplitude as the input pulse signal will be generated. This pulse signal is output through the VOUT pin of J2 and supplied to the ground detection host for acquisition and analysis.

[0019] The following is a detailed description of the actual working scenario of a ground pulse signal detection device.

[0020] In practical work, after connecting the ground pulse signal detection device to the signal transmitter, the power supply signal line connected to the signal transmitter is used to power the ground pulse signal detection device. When there is no external force pressing on the top of the external dial indicator extension rod 6, the signal light of the proximity switch 5 remains constantly lit, and there is no signal display at the ground receiver. When the top of the dial indicator extension rod 6 is pressed by external force, the signal light remains off, generating a pulse signal, and the ground receiver displays the generated pulse signal.

[0021] It is understood that the various embodiments mentioned above in this invention can be combined with each other to form combined embodiments without violating the principle and logic. Due to space limitations, this invention will not elaborate further.

[0022] Those skilled in the art will understand that, in the above-described method of the specific implementation, the order in which each step is written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0023] The ground pulse signal detection device provided by this invention connects the device to a pulse generator, and tightly presses the small shaft 8 in the detection device against the valve rod inside the pulse generator. When the valve rod inside the pulse generator extends, the valve rod pushes the small shaft 8, causing the target disk 7 on the left end of the small shaft 8 to approach the proximity switch 5. This action triggers the proximity switch 5 to generate a pulse signal, thereby recording the working state of the pulse generator. When the pulse generator valve rod retracts, the reset spring 9 in the device drives the small shaft 8 back to the initial position. At this time, the proximity switch 5 will not generate a pulse signal. Through such reciprocating motion, the device can continuously generate a series of pulse signals, and transmit these signals to the test host for analysis and processing through the power supply signal line. To ensure the accuracy and reliability of the detection process, the device is also equipped with dial indicator 1 and dial indicator extension rod 6. Dial indicator 1 and dial indicator extension rod 6 can check the stroke of target disk 7 at any time to ensure that the extension and retraction of the pulser is not hindered in any way, thereby improving the accuracy of the detection results. By using the ground pulse signal detection device, not only is the detection process of the pulser simplified, but the labor intensity of the detection work is also reduced.

[0024] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A ground pulse signal detection device, characterized in that, include: Detection components and dial indicator device; The dial indicator device includes: a dial indicator (1) and a dial indicator extension rod (6), wherein the dial indicator extension rod (6) is located at the right end of the dial indicator (1); The detection component includes: an end cap (2), an outer cylinder (4) and a proximity switch (5). The outer cylinder (4) has a circular through hole in its center outer wall and a proximity switch (5) is provided inside the outer cylinder (4). The outer cylinder (4) is provided with an end cap (2) at the left end. The end cap (2) is a cylindrical structure. A circular through hole is provided at the center of the left end face of the end cap (2). The right end of the dial indicator (1) and the dial indicator extension rod (6) are inserted into the outer cylinder (4) through the circular through hole. The right end of the end cap (2) is provided with a switch connecting plate (3), the switch connecting plate (3) and the end cap (2) are integrally formed, and a proximity switch (5) is provided on the switch connecting plate (3), the proximity switch (5) and the switch connecting plate (3) are fixedly connected; The left end face of the end cap (2) has a wire hole, and a power supply signal line (10) is provided in the wire hole. One end of the power supply signal line (10) is connected to the proximity switch (5), and the other end is connected to the test host. The proximity switch (5) has a target disk (7) on its right end, and a small shaft (8) on its right end. The small shaft (8) is embedded in the outer cylinder (4), and a return spring (9) is sleeved on the outer wall of the right end of the small shaft (8).

2. The ground pulse signal detection device according to claim 1, characterized in that, The dial indicator extension rod (6) is a cylindrical structure with a tapered structure on the right end. The left end of the dial indicator extension rod (6) is threaded, and the dial indicator extension rod (6) is threadedly connected to the dial indicator (1).

3. The ground pulse signal detection device according to claim 1, characterized in that, A transparent circular partition is embedded in the circular through hole on the outer wall of the outer cylinder (4), through which the interior of the outer cylinder (4) can be observed.

4. The ground pulse signal detection device according to claim 1, characterized in that, The outer cylinder (4) is a hollow cylindrical structure. A rectangular notch is provided on one side of the outer cylinder (4). The right end of the switch connecting plate (3) is inserted into the rectangular notch on one side of the outer cylinder (4). The inner wall of the left end of the end cap (2) is tightly attached to the left end of the outer cylinder (4).

5. The ground pulse signal detection device according to claim 1, characterized in that, The end cap (2) has a through hole on its side wall, and a fixing bolt is provided in the through hole. The fixing bolt positions the dial indicator (1).

6. The ground pulse signal detection device according to claim 1, characterized in that, The small shaft (8) is a cylindrical structure with a thread on the left end, and the small shaft (8) is threadedly connected to the target disk (7).

7. The ground pulse signal detection device according to claim 1, characterized in that, The inner wall of the outer cylinder (4) is provided with a step, which limits the resetting spring (9).

8. The ground pulse signal detection device according to claim 6, characterized in that, The target disk (7) consists of two parts: a disk structure on the left and a cylindrical structure on the right. The cylindrical structure has a thread on the right, which matches the thread on the left of the small shaft (8).

9. The ground pulse signal detection device according to claim 2, characterized in that, The tapered structure on the right end of the dial indicator extension rod (6) is closely attached to the left end of the target disk (7).

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