Through cable while-drilling inclinometry device based on PowerBus bus communication

Abstract

The invention relates to the technical field of through-cable while-drilling inclinometry devices, and discloses a through-cable while-drilling inclinometry device based on PowerBus bus communication, which comprises an inclinometry mechanism and a communication unit, adopts a PowerBus bus communication mode to carry out transmission communication, has a transmission distance of 3000 meters, improves the data transmission distance, provides data measurement guarantee for long-distance directional drilling, and is suitable for large-scale popularization and application. The communication Baud rate reaches 9600bps, about 20 frames of inclinometry data are transmitted per second, the transmission rate is improved, remote efficient data transmission can be achieved, the requirement for obtaining high-reliability data within a short time is met, the drilling construction precision is improved, the data are optimized and analyzed through the host, and the accuracy of drilling construction is improved. Data collected by the exploring tube is transmitted to the host through the through cable drill rod, the host obtains a large amount of inclinometry data in a short time, large deviation data and abnormal data are removed through calculation analysis and data processing, accuracy and reliability of measured data can be guaranteed, and accurate data support can be provided for well drilling work.

Description

Technical Field

[0001] The invention relates to the technical field of cable-based inclination measurement while drilling devices, and in particular to a cable-based inclination measurement while drilling device based on PowerBus communication. Background Art

[0002] The cable-based inclinometer while drilling is an instrument specially used to measure the wellbore trajectory during drilling. It is mainly used to monitor the inclination and direction of the wellbore in real time during drilling, providing accurate data support for drilling engineers to ensure the safety and efficiency of drilling operations.

[0003] The cable-based inclinometer while drilling instrument consists of the following three parts:

[0004] Probe: The probe is the core component of the instrument, responsible for measuring the inclination and direction of the wellbore. It is usually installed inside the drill pipe and communicates with the host through the cable drill pipe.

[0005] Host: The host is the control center of the instrument, responsible for receiving, processing and analyzing the data transmitted by the probe. The host is usually installed on the drilling platform to facilitate engineers to operate and monitor.

[0006] Cable drill pipe: Cable drill pipe is used to connect the probe and the host to transmit data and power.

[0007] At present, the transmission distance of cable-based inclinometer while drilling instruments is mostly 1000 meters, and a few can reach 1500 meters and 2000 meters. The transmission rate is usually 1 frame of data per second. Under the existing communication mode, the transmission distance is small and it cannot be applied to the measurement while drilling greater than 2000 meters. In addition, the data transmission rate is slow and the waiting time is long, which cannot meet the requirements of obtaining high-reliability data in a short time. Therefore, a cable-based inclinometer while drilling device based on PowerBus communication is proposed. Summary of the invention

[0008] The object of the present invention is to provide a cable-based downhole inclinometer device based on PowerBus bus communication, so as to solve the problems raised in the above background technology that under the existing communication mode, the transmission distance is small and it cannot be applied to downhole measurement greater than 2000 meters, and the data transmission rate is slow and the waiting time is long, which cannot meet the requirement of obtaining highly reliable data in a short time.

[0009] To achieve the above object, the present invention provides the following technical solutions: a cable-based inclination measurement while drilling device based on PowerBus bus communication, comprising an inclination measurement mechanism and a communication unit, wherein the inclination measurement mechanism is used for drilling data collection, and the inclination measurement mechanism comprises a probe, a host and a cable-based drill pipe;

[0010] The probe is installed inside the drill pipe and is used to measure the inclination and direction of the wellbore;

[0011] The host is installed on the upper part of the drilling platform. The host is used for receiving and analyzing the data transmitted by the probe. The host includes an industrial computer, a power module, a display, an input module and a data USB disk;

[0012] The cable drill rod is installed between the main unit and the probe, and is used for data transmission and power supply of components in the device;

[0013] The communication unit is used for communication transmission of probe data collection, and includes a PowerBus communication master station and a PowerBus communication slave station. The PowerBus communication master station is installed on the upper part of the host, and the PowerBus communication slave station is installed on the upper part of the probe.

[0014] Preferably, the industrial computer is the core computing device for receiving data for analysis and calculation, and the power supply module is used to supply power for the overall operation of the device. The power supply module is connected and installed with the power input terminal of the industrial computer and the PowerBus communication master station.

[0015] Preferably, the display is connected to the image output interface of the industrial computer and installed, and the display is used for image display of the industrial computer.

[0016] Preferably, the input module is used for inputting operation information, and the input module includes a keyboard and a mouse. The keyboard, mouse and data USB disk are connected and installed with the industrial computer through a data interface.

[0017] Preferably, the PowerBus communication master station is connected to the industrial computer in the host computer for communication upwards through USB communication, and is connected to the PowerBus communication slave station for communication downwards through the cable drill rod and supplies power to it.

[0018] Preferably, a PowerBus bus interface is provided on the upper part of the above-mentioned PowerBus communication master station, and the PowerBus communication slave station is communicatively connected to the PowerBus bus interface of the PowerBus communication master station upward through the cable drill rod, and the PowerBus communication slave station is communicatively connected to the industrial control computer in the host through the PowerBus communication master station.

[0019] Preferably, the PowerBus communication slave station is connected to communicate with the inclinometer unit in the probe tube through a TTL serial port and supplies power to it.

[0020] Preferably, the inclinometer unit is installed inside the probe tube to measure and collect data parameters of the formation, and the inclinometer unit includes a gyroscope, a geomagnetic sensor and a temperature sensor.

[0021] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0022] 1. This device adopts PowerBus communication mode for transmission communication, and the transmission distance can reach 3000 meters, which improves the data transmission distance and provides data measurement guarantee for long-distance directional drilling. The communication baud rate reaches 9600bps, and about 20 frames of inclination data are transmitted per second, which improves the transmission rate and can realize remote and efficient transmission of data, meet the requirements of obtaining highly reliable data in a short time, and is conducive to improving the accuracy of drilling construction.

[0023] 2. The host optimizes and analyzes the data, and uses the cable drill pipe to transmit the data collected by the probe to the host. The host obtains a large amount of inclination data in a short time, and processes the data through calculation and analysis, and eliminates large deviation data and abnormal data, which can ensure the accuracy and reliability of the measurement data and provide accurate data support for drilling work. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the principle of the inclinometer mechanism of the present invention;

[0026] Figure 2 It is a schematic diagram of the host principle of the present invention;

[0027] Figure 3 It is a schematic diagram of the probe principle of the present invention;

[0028] Figure 4 It is a schematic diagram of the PowerBus communication master station circuit of the present invention;

[0029] Figure 5 It is a schematic diagram of the PowerBus communication slave station circuit of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the 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 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 creative work are within the scope of protection of the present invention.

[0031] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0032] Example

[0033] In the prior art, under the existing communication mode, the transmission distance is short and cannot be applied to the measurement while drilling of more than 2000 meters. In addition, the data transmission rate is slow and the waiting time is long, which cannot meet the requirement of obtaining highly reliable data in a short time.

[0034] See also Figure 1-5 The present invention provides a technical solution: a cable-based inclination measurement while drilling device based on PowerBus bus communication, including an inclination measurement mechanism and a communication unit, the inclination measurement mechanism is used for drilling data collection, the inclination measurement mechanism includes a probe, a host and a cable-based drill pipe, specifically:

[0035] The probe is a data acquisition device. The probe mainly contains a PowerBus communication slave station and an inclinometer unit, and is powered by the PowerBus communication master station. The probe is installed inside the drill pipe to measure the inclination and azimuth of the wellbore. In order to accurately collect data, the inclinometer unit is installed inside the probe to measure the data parameters of the formation in which it is located. The inclinometer unit uses the RMC-160 three-dimensional magnetic compass. The module integrates a gyroscope of model ADXL-203, a geomagnetic sensor of model RM-3100, and a temperature sensor. After normal operation, each sensor can measure the wellbore inclination and azimuth of the current wellbore and measure the magnetic field strength, temperature and other data of the formation. After the measurement is completed, a frame of data is formed and sent to the PowerBus communication slave station through the TTL serial port. After that, the PowerBus communication slave station sends the data to the PowerBus communication master station through the cable drill pipe.

[0036] The host is installed on the upper part of the drilling platform. The host is used to receive and analyze the data transmitted by the probe. The host includes an industrial computer, a power module, a display, an input module and a data USB flash drive. Specifically, the industrial computer is the core computing device for analyzing and calculating the received data. The industrial computer has built-in measurement software. By operating the measurement software, commands are sent to the PowerBus communication master station. The PowerBus communication master station starts working, supplies power to the probe containing the PowerBus communication slave station and exchanges data. After obtaining the probe inclination data, the measurement software processes the data based on algorithms such as standard deviation, and optimizes the data through the host. Analysis: The host obtains a large amount of inclination data in a short time, and processes the data through calculation and analysis, and eliminates data with large deviations and abnormal data, which can ensure the accuracy and reliability of the measured data and provide accurate data support for drilling work. The power module is used to supply power to the overall operation of the device. The power module is connected and installed with the power input end of the industrial control computer and the PowerBus communication master station. The display is connected and installed with the image output interface of the industrial control computer. The display is used for image display of the industrial control computer. The input module is used for inputting operation information. The input module includes a keyboard and a mouse. The keyboard, the mouse and the data U disk are all connected and installed with the industrial control computer through the data interface.

[0037] The cable drill rod is installed between the main engine and the probe, and is used for transmitting data and supplying power to the components inside the device.

[0038] The communication unit is used for the communication transmission of the probe collection data. The communication unit includes the PowerBus communication master station and the PowerBus communication slave station. Specifically:

[0039] The PowerBus communication master station is installed on the upper part of the host, as shown in the attached Figure 2 As shown in the figure, the PowerBus communication master station communicates with the industrial computer in the host through USB communication, and the PowerBus communication master station communicates with the PowerBus communication slave station through the cable drill rod and supplies power to it, as shown in the figure. Figure 4 Shown is the working circuit diagram of the PowerBus communication master station.

[0040] The PowerBus communication slave station is installed on the upper part of the probe, as shown in the attached Figure 2As shown, in order to communicate and connect with the cable drill pipe, a PowerBus bus interface is provided on the upper part of the PowerBus communication master station. The PowerBus communication slave station communicates and connects with the PowerBus bus interface of the PowerBus communication master station upward through the cable drill pipe. The PowerBus communication slave station communicates and connects with the industrial control computer in the host through the PowerBus communication master station. The PowerBus communication slave station communicates and connects with the inclinometer unit in the probe tube downward through the TTL serial port and supplies power to it. The specific parameter information of the PowerBus bus is as follows:

[0041] Communication distance: 3000 meters;

[0042] Communication level: downstream voltage, upstream current loop;

[0043] Power supply voltage: 12V-48V;

[0044] Wiring mode: two buses, power supply, no polarity;

[0045] Wiring method: arbitrary branch;

[0046] Single node functional capacity: not less than 500mA.

[0047] The PowerBus communication mode is adopted for transmission communication, and the transmission distance can reach 3000 meters, which improves the data transmission distance and provides data measurement guarantee for long-distance directional drilling. The communication baud rate reaches 9600bps, and about 20 frames of inclination data are transmitted per second, which improves the transmission rate and can realize remote and efficient transmission of data, meeting the requirements of obtaining highly reliable data in a shorter time, which is conducive to improving the accuracy of drilling construction.

[0048] Working principle or structural principle: during drilling, the industrial computer has built-in measurement software, and the command is sent to the PowerBus communication master station by operating the measurement software. Then the PowerBus communication master station starts working, supplies power to the probe containing the PowerBus communication slave station and exchanges data. At the probe, the sensor in the inclination unit measures the well inclination and azimuth of the current wellbore and the magnetic field strength, temperature and other data of the formation. After the measurement is completed, a frame of data is formed and sent to the PowerBus communication slave station through the TTL serial port. The PowerBus communication slave station then sends it to the PowerBus communication master station through the cable drill pipe. Then the PowerBus communication master station transmits the data to the industrial computer. After obtaining the probe inclination data, the measurement software processes the data based on algorithms such as standard deviation, eliminates large deviation data and abnormal data, and ensures the accuracy and reliability of the measurement data. The specific calculation and analysis process is as follows:

[0049] ① Calculate the average value of the data: First, calculate the average value of the data set;

[0050] ② Calculate the standard deviation of the data: Then calculate the standard deviation of the data set;

[0051] ③ Determine the range of outliers: According to the 3σ principle, the range of outliers is determined to be plus or minus 3 times the standard deviation of the mean;

[0052] ④ Identify and remove outliers: By taking values ​​from a range, data points outside this range are considered outliers and removed from the data set;

[0053] ⑤Data optimization and correction: After removing outliers, average the remaining data to obtain corrected reliable data and complete the data calculation and analysis;

[0054] Afterwards, the optimized and corrected data is transmitted to the control terminal of the drilling equipment through the industrial control computer, providing accurate data support for the drilling work.

[0055] In summary, this device adopts PowerBus communication mode for transmission communication, and the transmission distance can reach 3000 meters, which improves the data transmission distance and provides data measurement guarantee for long-distance directional drilling. The communication baud rate reaches 9600bps, and about 20 frames of inclination data are transmitted per second, which improves the transmission rate and can realize remote and efficient transmission of data, meet the requirements of obtaining highly reliable data in a shorter time, and is conducive to improving the accuracy of drilling construction. The data is optimized and analyzed by the host, and the data collected by the probe is transmitted to the host by the cable drill pipe. The host obtains a large amount of inclination data in a short time, and processes the data through calculation and analysis, eliminates large deviation data and abnormal data, which can ensure the accuracy and reliability of the measurement data and provide accurate data support for drilling work.

[0056] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

Claims

1. A cable-based inclination measurement while drilling device based on PowerBus communication, comprising an inclination measurement mechanism and a communication unit, characterized in that: The inclinometer is used for drilling data collection, and comprises a probe, a main engine and a cable drill pipe; The probe is installed inside the drill pipe and is used to measure the inclination and direction of the wellbore; The host is installed on the upper part of the drilling platform. The host is used for receiving and analyzing the data transmitted by the probe. The host includes an industrial computer, a power module, a display, an input module and a data USB disk; The cable drill rod is installed between the main unit and the probe, and is used for data transmission and power supply of components in the device; The communication unit is used for communication transmission of probe data collection, and includes a PowerBus communication master station and a PowerBus communication slave station. The PowerBus communication master station is installed on the upper part of the host, and the PowerBus communication slave station is installed on the upper part of the probe.

2. The cable-based inclination-while-drilling device based on PowerBus communication according to claim 1, characterized in that: The industrial computer is a core computing device used for analysis and calculation of received data. The power module is used to supply power for the overall operation of the device. The power module is connected and installed with the power input terminal of the industrial computer and the PowerBus communication master station.

3. The cable-based inclination-while-drilling device based on PowerBus communication according to claim 2, characterized in that: The display is connected and installed with the image output interface of the industrial computer, and the display is used for image display of the industrial computer.

4. The cable-based inclination-while-drilling device based on PowerBus communication according to claim 3, characterized in that: The input module is used for inputting operation information, and the input module includes a keyboard and a mouse. The keyboard, the mouse and the data U disk are all connected and installed with the industrial control computer through a data interface.

5. The cable-based inclination-while-drilling device based on PowerBus communication according to claim 1, characterized in that: The PowerBus communication master station is connected to the industrial computer in the host computer for communication upwards through USB communication, and is connected to the PowerBus communication slave station for communication downwards through the cable drill rod and supplies power to it.

6. The cable-based inclination-while-drilling device based on PowerBus communication according to claim 5, characterized in that: The upper part of the PowerBus communication master station is provided with a PowerBus bus interface, the PowerBus communication slave station is upwardly connected to the PowerBus bus interface of the PowerBus communication master station through the cable drill rod, and the PowerBus communication slave station is connected to the industrial control computer in the host through the PowerBus communication master station.

7. The cable-based inclination-while-drilling device based on PowerBus communication according to claim 6, characterized in that: The PowerBus communication slave station is connected to the inclinometer unit in the probe tube through the TTL serial port and supplies power to the inclinometer unit.

8. The cable-based inclination-while-drilling device based on PowerBus communication according to claim 7, characterized in that: The inclinometer unit is installed inside the probe tube and is used to measure and collect data parameters of the formation. The inclinometer unit includes a gyroscope, a geomagnetic sensor and a temperature sensor.

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