Measurement and supervision device for measuring and adjusting cable depth

Abstract

The utility model provides a measuring and adjusting cable depth measuring and monitoring device, which comprises a measuring and controlling host, a Martin-decker measuring device, a roller rotating turn number sensor, a roller, a roller rotating shaft and a roller fixing frame, the roller rotation turn number sensor records the rotation turn number of the roller and transmits rotation turn number information to the measurement and control host, and the Martin-decker metering device is connected to a cable, collects depth metering pulses generated by pulling of the cable and transmits the metering pulses to the measurement and control host. And the measurement and control host compares two groups of depth values according to the rotation turn number information and the depth measurement information, and detects the depth measurement error of the Martin-decker measurement device in real time. The measuring and adjusting cable depth measurement monitoring device solves the problem that random errors are generated due to the fact that a measuring wheel of an existing Martin-decker depth measuring device slips, and the purpose of monitoring whether depth data are accurate or not is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield water injection well testing equipment, in particular to a depth measurement and monitoring device for measuring and adjusting cables. Background Art

[0002] The promotion and popularization of integrated testing and adjustment technology for oilfield water injection wells is the premise and guarantee for fine development of oilfields, fine interpretation of data, and precise implementation of oil well policies. The accuracy and reliability of depth data in the integrated testing and adjustment construction is not only crucial to obtaining high-quality test data, but also plays an important guiding role in safe construction.

[0003] The existing logging depth metering system consists of a Martindike and a winch panel. The metering wheel on the Martindike contacts the cable. The friction of the cable drives the metering wheel to rotate. The metering wheel drives the photoelectric encoder to rotate to generate two depth pulses AB. The winch panel collects the pulses and processes them to display the depth and speed data.

[0004] Disadvantages of Martindike depth measurement system:

[0005] 1. If there is oil or water on the cable, the friction transmission may cause slippage, especially in winter when the cable is frozen, the slippage is more serious;

[0006] 2. Due to the large mass of the metering wheel, when the cable running speed changes greatly, a large acceleration will be generated, especially the steel tube cable with a small friction coefficient will cause the metering wheel to slip frequently, thereby increasing the depth measurement error.

[0007] The above two points will lead to random errors in depth measurement, and this error is inherent in this measurement method and can only be reduced but not eliminated. When the error is large, it will seriously affect the qualification rate of logging data and construction safety.

[0008] For a long time, accidents such as unqualified test data, broken cables, instruments falling into the well, instruments caving and impacting the sky pulley, and even injuries have occasionally occurred due to inaccurate depth data. Especially with the popularization of steel pipe cables, such problems have tended to occur more and more.

[0009] In the Chinese patent application with application number: CN201822227634.7, a logging cable depth acquisition device is involved. The main purpose is to solve the problem that the existing logging cable depth tension acquisition device uses a split measuring instrument, which makes the volume too large and the cost high. It is characterized in that: a clamp (3) is fixed on the left side of the support plate (1), the upper part of the clamp (3) is connected to two encoders (5), and the lower part is connected to two depth measuring wheels (12), the depth measuring wheel (12) is connected to the counter (13), the left end of the support plate (1) is connected to a guide (2), and the two sides of the right end are respectively connected to a clamp (7), and the clamp (7) is respectively connected to a clamp wheel (11), a magnetometer (10) and a tension meter (8), and the right end of the clamp (7) is connected to a cable degreaser (9). The logging cable depth acquisition device integrates the tension and depth measurement functions, has a small volume and accurate measurement.

[0010] In the Chinese patent application with application number: CN201911352609.4, a logging cable measurement system is involved, which includes an arc pulley measuring device, a wireless intelligent winch panel, a surface instrument and a cloud center. The photoelectric encoder of the invention is coaxially arranged with the metering wheel, and is used to obtain the depth metering signal according to the metering wheel. When the logging cable is running, the logging cable drives the metering wheel to rotate under the action of the clamping wheel. The metering wheel is connected to the photoelectric encoder, and the photoelectric encoder sends the acquired depth metering signal to the arc pulley controller for signal processing. The system can effectively correct the errors caused by the wear of the depth wheel and the tensile deformation of the cable, and has the advantages of short time, simple operation and low cost.

[0011] A Chinese patent application with application number: CN201720061066.0 relates to a logging cable depth and tension measuring device. The device mainly solves the problem that most existing cable depth and tension measuring instruments use a single measuring wheel and the measurement is inaccurate. The device is characterized in that: an upper measuring instrument (3) is connected to the upper clamping plate (7), a lower measuring instrument (14) is connected to the lower clamping plate (10), a main photoelectric counter (5) is fixed to the upper measuring instrument (3), and a secondary photoelectric counter (13) is fixed to the lower measuring instrument (14); a tension device (11) is fixed in the middle of the upper clamping plate (7) and the lower clamping plate (10), and a cable ice scraper and oil remover (9) is connected to the right end of the upper clamping plate (7) and the lower clamping plate (10). The logging cable depth and tension measuring device uses a double measuring wheel to measure the depth, so that the measurement result is more accurate, and the tension meter is built-in, so that the structure is more compact and the volume is reduced.

[0012] The above existing technologies are all significantly different from the present invention and fail to solve the technical problem we want to solve. For this reason, we have invented a new cable depth measurement and supervision device. Utility Model Content

[0013] The utility model aims to provide a cable depth metering monitoring device which can solve the problem of random error caused by slipping of metering wheels in current Martindike depth metering devices and achieve the purpose of monitoring whether depth data is accurate.

[0014] The purpose of the utility model can be achieved through the following technical measures: a cable depth measurement and supervision device, which includes a measurement and control host, a Martindike metering device, a roller rotation number sensor, a roller, a roller shaft and a roller fixed frame, the roller shaft is fixed on the roller fixed frame, the roller rotates around the roller shaft, and drives the cable up and down when rotating, the roller rotation number sensor is fixed on the roller fixed frame, records the number of rotations of the roller, and transmits the number of rotations information to the measurement and control host, the Martindike metering device is connected to the cable, collects the depth measurement pulse generated by the cable rising and falling, and transmits the measurement pulse to the measurement and control host, the measurement and control host compares two groups of depth values ​​according to the number of rotations information and the depth measurement information, and detects the depth measurement error of the Martindike metering device in real time.

[0015] The purpose of the utility model can also be achieved through the following technical measures:

[0016] The measurement and control host is fixed in the operation compartment and connected to the Martindike metering device and the drum rotation number sensor through a data line.

[0017] The drum rotation number sensor includes a strong magnetic signal magnet, which is installed on the drum shaft. When the drum shaft rotates, the strong magnetic signal magnet installed on the drum shaft rotates, and the drum rotation number sensor generates a counting pulse reflecting the number of rotations.

[0018] The measurement and control host includes a signal preprocessing unit, a single-chip microcomputer and a display alarm unit. The single-chip microcomputer is respectively connected to the signal processing unit and the display alarm unit. The signal preprocessing unit filters and shapes the signals transmitted from the drum rotation number sensor and the Martindike metering device, and then sends the two groups of signals to the single-chip microcomputer for counting and corresponding depth conversion. The single-chip microcomputer compares the two groups of depth values ​​to obtain the depth difference, and transmits it to the display alarm unit for real-time display.

[0019] The display alarm unit includes an audible and visual alarm module. When the depth difference exceeds a set value, the single chip microcomputer controls the display alarm unit to give an audible and visual alarm to alert the operator.

[0020] The measurement and control host also includes a keyboard input unit, which is connected to the single-chip microcomputer to set the early warning depth difference.

[0021] The keyboard input unit is also used to input a set value of the number of remaining turns of the cable.

[0022] The drum rotation number sensor adopts a Hall bidirectional sensor and has a bidirectional counting function.

[0023] The drum rotation number sensor is connected to the signal processing unit. When the cable is lifted, the drum rotation number is counted down and the rotation number information is transmitted to the signal processing unit. The signal processing unit transmits the rotation number information to the single-chip microcomputer. When the single-chip microcomputer determines that the remaining number of cable turns is less than the set value of the remaining number of cable turns, it controls the display alarm unit to sound an alarm.

[0024] The cable depth measurement and supervision device of the utility model is equipped with a Hall bidirectional sensor for the number of rotations of the drum above the rotating shaft of the winch drum of the construction vehicle to collect the number of rotations of the drum, and transmit the data to the measurement and control host located in the operation room. At the same time, the depth measurement pulse of the Martindike depth system is also transmitted to the measurement and control host. The measurement and control host calculates the two data to obtain the cable drum counting depth and the Martindike counting depth. The two depth values ​​are compared to detect the depth measurement error caused by the slippage of the Martindike metering wheel in real time.

[0025] The technical requirements of the utility model are: the drum rotation number sensor of the device is installed on the drum fixing bracket, a strong magnetic signal magnet is installed on the drum shaft, and the distance between the magnet and the sensor is 2-3 mm to ensure the reliability of signal collection.

[0026] The utility model provides a cable depth measurement method. Since there is no slippage of the drum, there is no random measurement error of Martindike depth measurement. The utility model mainly uses the number of rotations of the winch drum to indirectly collect the cable depth, ensuring the reliability of cable depth collection. Although the depth measurement resolution is not high, there is no random error, which solves the problem of random errors caused by the slippage of the metering wheel in the current Martindike depth measurement device, and achieves the purpose of supervising whether the depth data is accurate. After field verification, the device realizes real-time supervision and proofreading of depth data, eliminates random depth errors caused by the slippage of the metering wheel, and early warning of the remaining number of turns of the cable lifting, providing technical guarantee for safe and high-quality construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a cable depth measurement and supervision device of the utility model;

[0028] Figure 2 The utility model is a schematic block diagram of the principle of a measuring and controlling host of a cable depth measurement and monitoring device. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations and / or combinations thereof.

[0031] See also Figure 1 The utility model provides a cable depth measurement and monitoring device, comprising:

[0032] The measuring and controlling host realizes the functions of depth and difference display, difference alarm and remaining laps alarm.

[0033] The drum rotation number sensor is a Hall bidirectional sensor with a bidirectional counting function and is fixed on the drum fixing frame.

[0034] Furthermore, the drum rotation number sensor also includes a strong magnetic signal magnet installed on the drum shaft.

[0035] Furthermore, the rotation of the drum drives the cable to rise and fall.

[0036] Furthermore, the drum shaft rotates, the strong magnetic signal magnet installed on the drum shaft rotates, and the drum rotation number sensor generates a counting pulse, which is sent to the measurement and control host for processing through the data line.

[0037] Furthermore, the Martindike metering device generated by the cable is sent to the measurement and control host for processing via the data line.

[0038] Furthermore, the measurement and control host obtains two depth data after processing the number of drum rotations and Martindike pulses and compares and calculates the difference. When the difference exceeds a set value (generally the set value is 20 to 100 cm), an alarm is displayed.

[0039] The utility model mainly uses the Hall bidirectional sensor installed on the frame above the drum shaft to obtain the number of drum rotations, and transmits the data to the measurement and control host located in the operating room. At the same time, the depth measurement pulse of the Martindike depth system is also transmitted to the measurement and control host. The measurement and control host calculates the two data to obtain the cable drum counting depth and the Martindike counting depth. The two depth values ​​are compared to detect the depth measurement error caused by the slip of the Martindike metering wheel in real time. The depth value obtained by the number of rotations does not have the depth random error of the Martindike depth measurement system. Using the depth data as the supervision and correction data of the original depth data has important application value.

[0040] Example 1

[0041] See also Figure 1 The utility model of the cable depth measurement and monitoring device comprises:

[0042] A measurement and control host (8), the measurement and control host (8) is fixed in the operation chamber and has the functions of depth and difference display, difference alarm and remaining lap alarm;

[0043] The drum rotation number sensor (5) is a Hall bidirectional sensor with a bidirectional counting function and is fixed on the drum fixing frame (1).

[0044] Furthermore, the drum rotation number sensor (5) also includes a strong magnetic signal magnet (4) installed on the drum shaft (3).

[0045] Furthermore, the rotation of the drum (2) drives the cable (6) to rise and fall.

[0046] Furthermore, the drum shaft (3) rotates, the strong magnetic signal magnet (5) installed on the drum shaft (3) rotates, and the drum rotation number sensor (5) generates a counting pulse, which is sent to the measurement and control host (8) for processing via a data line.

[0047] Furthermore, the Martindike metering device (7) is lifted off the cable to generate a depth metering pulse, which is sent to the measurement and control host (8) for processing via a data line.

[0048] Furthermore, the measurement and control host (8) processes the number of rotations of the drum and the Martindike pulse to obtain two depth data and compares and calculates the difference, and after judgment, displays and alarms.

[0049] Example 2

[0050] See also Figure 2 , Figure 2 The schematic diagram of the principle block diagram of the measurement and control host (8) is shown in FIG. The measurement and control host is composed of a signal preprocessing unit, a single chip microcomputer, a keyboard input unit and a display alarm unit.

[0051] The signal preprocessing unit filters and shapes the pulse signals from the drum rotation sensor and the Martindike sensor, and then sends the two sets of signals to the single-chip microcomputer for counting and corresponding depth conversion. The single-chip microcomputer compares the two sets of depth values ​​and sends them to the display alarm unit for real-time display. If the depth difference exceeds the set value, the display alarm unit will alarm to remind the operator. The keyboard input unit mainly inputs two data items: the warning depth difference and the set value of the remaining number of circles. The remaining data also includes three data items: the number of pulses per meter, the number of meters per cable circle, and the correction value of the number of cable layers.

[0052] Example 3

[0053] The remaining number of turns warning principle is: when the cable is lowered during logging, the drum rotates forward, and the device counts up the number of drum rotations. When the cable is lifted up, the drum rotates reversely, and the device counts down the number of drum rotations. The drum count value represents the depth of the cable in the well. When lifting the cable, in order to prevent roof falls, the remaining number of turns alarm value is generally set to 20 to 30 turns. When the number of cable turns is reduced to the set value when lifting the cable, the device issues a warning to remind the operator to slow down and prevent roof falls.

[0054] All components themselves and connection methods of the components in this application that are not discussed in detail are well-known technologies in this technical field and will not be described in detail.

[0055] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installation", "locking", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0057] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

Claims

1. Cable depth measurement and monitoring device, characterized in that: The cable depth metering and monitoring device comprises a measuring and controlling host, a Martindike metering device, a roller rotation number sensor, a roller, a roller shaft and a roller fixing frame, wherein the roller shaft is fixed on the roller fixing frame, the roller rotates around the roller shaft and drives the cable up and down during rotation, the roller rotation number sensor is fixed on the roller fixing frame, records the number of rotations of the roller, and transmits the number of rotations information to the measuring and controlling host, the Martindike metering device is connected to the cable, collects the depth metering pulses generated by the cable being raised and lowered, and transmits the metering pulses to the measuring and controlling host, and the measuring and controlling host compares two groups of depth values ​​according to the number of rotations information and the depth metering information, and detects the depth metering error of the Martindike metering device in real time.

2. The cable depth measurement and monitoring device according to claim 1 is characterized in that: The measurement and control host is fixed in the operation compartment and connected to the Martindike metering device and the drum rotation number sensor through a data line.

3. The cable depth measurement and monitoring device according to claim 1 is characterized in that: The drum rotation number sensor includes a strong magnetic signal magnet, which is installed on the drum shaft. When the drum shaft rotates, the strong magnetic signal magnet installed on the drum shaft rotates, and the drum rotation number sensor generates a counting pulse reflecting the number of rotations.

4. The cable depth measurement and monitoring device according to claim 1 is characterized in that: The measurement and control host comprises a signal preprocessing unit, a single chip microcomputer and a display alarm unit, and the single chip microcomputer is connected to the signal preprocessing unit and the display alarm unit respectively.

5. The cable depth measurement and monitoring device according to claim 4 is characterized in that: The display alarm unit includes an audible and visual alarm module. When the depth difference exceeds a set value, the single chip microcomputer controls the display alarm unit to give an audible and visual alarm to alert the operator.

6. The cable depth measurement and monitoring device according to claim 4 is characterized in that: The measurement and control host also includes a keyboard input unit, which is connected to the single-chip microcomputer to set the early warning depth difference.

7. The cable depth measurement and monitoring device according to claim 6 is characterized in that: The keyboard input unit is also used to input a set value of the number of remaining turns of the cable.

8. The cable depth measurement and monitoring device according to claim 7 is characterized in that: The drum rotation number sensor adopts a Hall bidirectional sensor and has a bidirectional counting function.

9. The cable depth measurement and monitoring device according to claim 8 is characterized in that: The drum rotation number sensor is connected to the signal preprocessing unit. When the cable is lifted, the drum rotation number is counted down and the rotation number information is transmitted to the signal preprocessing unit. The signal preprocessing unit transmits the rotation number information to the single-chip microcomputer. When the single-chip microcomputer determines that the remaining number of cable turns is less than the set value of the remaining number of cable turns, it controls the display alarm unit to sound an alarm.

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