KR101259466B1 - System and method for detecting set-up error of drilling apparatus - Google Patents

Abstract

Disclosed are an installation error detection system and method for drilling equipment. Installation error detection system of the drilling equipment according to an embodiment of the present invention, the measurement unit for measuring the installation state of the drilling equipment installed on the drill floor of the drilling vessel; Normal data generation unit for generating the normal data based on the design data of the drilling equipment, and setting the coordinate system to the normal data based on the center line segment connecting the well center of the drilling line and the vertical upper center point; A measurement information processing unit for analyzing measurement data collected from the measurement unit and generating installation state information of the drilling rig based on this; And a correction amount calculating unit comparing the normal data of the drilling rig with corresponding measurement data to calculate an error value based on the coordinate system, and calculating a correction amount of the drilling rig based on the calculated error value.

Description

Installation error detection system and method of drilling equipment {SYSTEM AND METHOD FOR DETECTING SET-UP ERROR OF DRILLING APPARATUS}

The present invention relates to an installation error detection system and method for drilling equipment installed on the drill floor of the drilling vessel.

With the development of undersea resource development technology, a drill ship that can be equipped with drilling equipment and sail on its own power has recently been developed and used for underwater drilling and resource exploration.

1 is a partial cross-sectional view schematically showing the structure of a general drilling line.

As shown in FIG. 1, the drilling line has a drilling tower 110 formed on an upper portion of a drill floor in which drilling is performed, and a drill pipe for drilling through a door pool 120 at a lower portion thereof. By sending the 130 to the bottom of the seabed, it is possible to drill seabed resources stored in the well deep below the seabed.

In general, in the drilling tower 110 formed on the drill floor 140 of the drilling vessel, various equipment necessary for drilling (hereinafter, referred to as "drilling equipment") are installed.

Drilling equipment installed in the drilling tower 110, for example, Traveling Block (Top Traveling Block), Top Drive (Retractable Dolly), Guide Track (Guide Track, Dolly Track), Vertical pipe transport Devices, horizontal pipe feeders, pipe storage devices and motion compensators such as Crown Mounted Compensator (CMC) blocks.

In order to install these drilling equipment, first, the drilling tower 110 is mounted on the drill floor 140, and the drilling equipment is installed in the drilling tower 110, and the drilling equipment at this time drills the drilling pipe for several kilometers. (Km) It is very important to install it in the correct position according to the design drawing so that it can be interlocked to descend vertically to the depth.

However, installation errors occur in the installation of actual drilling equipment, it is almost impossible to install correctly according to the design drawings. Therefore, it is cumbersome to repeatedly perform measurement and calibration operations to manage the drilling equipment installation accuracy within a certain tolerance.

In addition, it is difficult to calculate the organic error range between drilling equipments because only the ideal design state is described on the design drawing when installing the drilling equipment.In the calculation of the error range, the reliability of the measurement data and its reference point are not clear, so it is corrected There is a problem that the work is not performed smoothly or the reliability is low.

An embodiment of the present invention is to provide an installation error detection system and method of the drilling equipment for automatically detecting the installation error for the drilling equipment installed on the drill floor of the drilling vessel.

According to an aspect of the invention, the measurement unit for measuring the installation state of the drilling equipment is installed on the drill floor of the drilling vessel; A normal data generation unit generating normal data based on design data of the drilling rig, and setting a coordinate system to the normal data based on a center line segment connecting the well center of the drilling line and an upper center point perpendicular to the drilling center; A measurement information processing unit for analyzing measurement data collected from the measurement unit and generating installation state information of the drilling equipment based on the measurement data; And comparing a measurement data corresponding to the normal data of the drilling rig to calculate an error value based on the coordinate system, and calculating a correction amount calculating unit calculating a correction amount of the drilling rig based on the calculated error value. A detection system is provided.

In addition, the design unit having the design data for installing the drilling equipment; A communication unit which receives the measurement data from the measurement unit; A database unit for storing various programs and data for detecting installation errors of the drilling rig; And a controller for storing data of the correction amount reflecting the installation error of the drilling rig and transmitting the correction amount to a terminal of an operator.

In addition, the drilling equipment is a traveling block, a top drive, a dolly system, a guide track, a drill pipe storage device, a drill pipe feeder, a motion compensation device compensator).

The measurement data may include identification information of the drilling rig and measurement point information which is actual measurement coordinates of a measurement origin, which is a target portion requiring measurement.

The measurement information processing unit may overlap the first figure displaying the installation state information and the second figure displaying the normal data based on the upper center point of the well center and the well center. .

The correction amount calculator may calculate a relative correction amount of a corresponding measurement origin by reflecting a conversion matrix required for converting the measurement data.

According to another aspect of the present invention, a) generating the normal data based on the design data of the drilling rig is installed on the drill floor of the drilling vessel, and based on the center line segment connecting the upper center point perpendicular to the well center of the drilling vessel Setting a coordinate system in the normal data; b) collecting the measurement data by measuring the installation state of the drilling equipment; c) analyzing the measurement data and generating installation state information of the drilling rig based on the measurement data; And d) comparing the measurement data corresponding to the normal data of the drilling rig to calculate an error value based on the coordinate system, and calculating a correction amount of the drilling rig based on the calculated error value. An error detection method may be provided.

Further, after the step d), if the error amount exceeds a setting allowance, correcting the installation position according to the error amount; And re-measuring and verifying the installation state of the drilling rig according to the installation position correction.

In addition, the step d) may include transmitting the correction amount reflecting the installation error of the drilling equipment to the terminal of the operator.

In addition, the step a), the step of generating a plane by measuring a stool (Stool) for supporting the drilling tower to set the virtual space on the drill floor; Measuring a center point of an auxiliary well center and a main well sunter, and connecting two center points of the auxiliary well center and the main well center to generate plane coordinates (x, y) of the main well center as a lower center point; Measuring a preset upper center point located at the center of the drilling tower, and generating a z-axis vertically connected to the upper center point at a main well center, which is a lower center point; And setting a coordinate system for detecting installation errors of the drilling tower and drilling equipment based on the normal data by matching normal data with actual data based on the main well center.

Embodiment of the present invention has the effect of automatically detecting the installation error for the drilling equipment based on the line segment connecting the well center and the upper center point.

In addition, there is an advantage that can increase the efficiency of the operation by transmitting the error amount of the drilling equipment detected to the operator in the field and performing the correction and verification accurately according to the error amount.

1 is a partial cross-sectional view schematically showing the structure of a general drilling line.
2 shows some drilling equipment installed in a drilling tower according to an embodiment of the present invention.
3 is a structural diagram schematically showing a system for detecting installation error of drilling equipment according to an exemplary embodiment of the present invention.
4 shows an example of generating regular data for a drilling rig according to an embodiment of the present invention.
5 and 6 illustrate a method of generating installation state information of a drilling tower according to an embodiment of the present invention.
7 illustrates a method of setting coordinate systems of normal data according to an embodiment of the present invention.
8 is a flowchart illustrating a method for detecting an installation error of drilling equipment according to an exemplary embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. Also, the terms " part, "" module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have.

Now, the installation error detection system and method for drilling equipment according to an embodiment of the present invention will be described in detail with reference to the drawings.

Prior to explaining the drilling equipment installation error detection system according to an embodiment of the present invention will be described for the drilling equipment through Figures 1 and 2.

Referring back to FIG. 1, the drilling tower 110 is installed on a drill floor in which drilling work is performed to support the entire weight of various drilling equipments such as a drill string, and generates dynamics when drilling. It refers to a steel tower-shaped structure designed to withstand dynamic loads.

The drilling tower 110 has a dual drilling tower structure including an auxiliary drilling tower 111 and a main drilling tower 112 in order to increase the efficiency of drilling operations as the drilling depth is recently increased. .

On the other hand, Figure 2 shows some of the drilling equipment installed in the drilling tower according to an embodiment of the present invention.

Referring to FIG. 2, key drilling equipment installed in the drilling tower 110 includes a traveling block 150 that vertically moves to vertically move the drill pipe 130 downward. ), A top drive (160), a dolly system (Retractable Dolly) 170, a guide track (Guide Track, Dolly Track) 180 is included.

The traveling block 150 is connected to the top of the top drive 160 to allow the top drive 160 to move up and down through a device such as a drawwork or a cylinder.

Top drive 160 is a key equipment for drilling work while vertically descending while rotating the drill pipe 130 to proceed with the drilling work.

Dolly system 170 is coupled to the side of the top drive 160 to hold the top drive 160 to move vertically and accurately according to the guide of the guide track 180, and moves up and down with the top drive 160 .

Guide track 180 is a kind of rail system formed in the longitudinal direction perpendicular to the plane of the drill floor 140 is formed with a 'H' shaped guide groove 181 facing each other, the dolly system 170 The wheel part 171 of the guide is inserted to allow the vertical movement. The guide track 180 is also called a dolly track (Dolly Track) and the drill drive 140 of the design drawing as much as to guide the top drive 160 to perform the drilling operation by lowering the drill pipe 130 exactly in the vertical direction Ideally, it is installed perpendicularly from the plane of the.

In addition, although omitted in the drawings, the pipe storage device for storing the drill pipe 130, a vertical pipe feeder for the transfer of the drill pipe 130, a horizontal pipe feeder and a motion compensator (Motion Compensator), etc. do.

The motion compensation device is also called a vertical oscillation compensation device, and not only corrects a drill string from a vertical rock of a drilling line and a rig during drilling, but also subsea equipment such as a BOP. It is also used when installing on. Such a motion compensation apparatus may be classified into a crown mounted compensator (CMC), an active heave compensator (AHC), a direct line compensator (DLC), or a drill string compensator (DSC).

Among these, embodiments of the present invention will be described with reference to CMC as an example of the vertical motion compensation device. CMC is a passive heave compensator, which is installed on the top of the drilling tower to fix the relative position of the drill pipe 130 according to the vertical motion of the drilling line and the rig.

On the other hand, Figure 3 is a schematic diagram showing the installation error detection system of the drilling equipment according to an embodiment of the present invention.

Referring to FIG. 3, the installation error detection system 200 for drilling equipment according to an embodiment of the present invention includes a measurement unit 210 and an installation error detection server 220 (hereinafter referred to as a server).

The measuring unit 210 measures the installation state of the drilling tower and the drilling equipment installed on the drill floor 140 and transmits it to the server 220. Such a measurement unit 210 may include a three-dimensional position measuring device such as an optical wave and an IGPS (Indoor Global Positioning System) for the measurement.

 For example, the measurement unit 210 measures the four points of the stool supporting the drilling tower 110 and the well centers (Well Center, 2 points) of the auxiliary drilling tower 111 and the main drilling tower 112, respectively, and the auxiliary drilling Two center points (2 points) of the CMC block located on the vertical line are measured from the auxiliary well center of the tower 111 and the main well center of the main drilling tower 112, respectively. The auxiliary well center and the main well center mean a center point (center coordinate) of the through hole through which the drill pipe 130 penetrates toward the door pool. In the following description, the center points of the main well center and the auxiliary well center are referred to as the lower center point, and two center points of the CMC block respectively located on the vertical line are referred to as the upper center point.

In addition, the upper center point is not limited to measuring two points on the lower side of the CMS block located on the vertical line of the main well center and the auxiliary well center on the design data, and the main well center and the auxiliary well on the design data. Measurements may be made by setting two points of other facilities or devices, such as the top of a drilling tower, located on the vertical line of the center, to the measurement origin (target area where measurement is required).

In addition, the measurement unit 210 senses the position of at least one or more preset measurement origins for each drilling equipment, and transmits the measurement data measured accordingly to the server 220. The measurement data may include drilling equipment information and measurement point information which is actual measurement coordinates for the measurement origin, which is a target portion requiring measurement.

The server 220 includes a communication unit 221, a design unit 222, a regular data generation unit 223, a measurement information processing unit 224, a correction amount calculation unit 225, a database unit 226, and a control unit 227. .

The communication unit 221 communicates with the measurement unit 210 and receives measurement data about the structure and the drilling equipment installed on the drill floor 140.

The design unit 222 has design data for installing the drilling rig on the drill floor 140, the design data is the position, dimension value and for the organic operation between the drilling equipment installed on the drill floor 140 Includes ideal setting information such as installation intervals. Such design data may be stored in the form of a design program file such as a CAD.

The normal data generator 223 automatically extracts design data for designing the drilling rigs from the design unit 222 and automatically generates normal data. In this case, the regular data generator 223 may set a coordinate system for detecting installation errors of the respective drilling rigs based on the main well center and its upper center point.

In general, the design drawings show the location of all drilling equipment, including the drilling tower. In general, workers check the design drawings to determine the location of the drilling rig. At this time, the coordinates are not displayed based on a certain point, but only relative distances are displayed.

Therefore, in the exemplary embodiment of the present invention, the coordinates of the measurement origin, which require measurement of the drilling equipment, are converted into a coordinate system based on a preset reference, calculated, and stored. Here, the coordinate system is a value in which coordinates are converted based on a main well center and an upper center point thereof.

On the other hand, Figure 4 shows an example of generating regular data for the drilling equipment according to an embodiment of the present invention.

Referring to FIG. 4, the design data for the guide track 180, which is one of the drilling rigs, is taken to generate regular data based on the position of the main well center. In this case, each dimension (eg, D01 to D06) of the design data may be displayed in a three-dimensional shape such as a point, a straight line, or a curve so as to be used by a user. In addition, when the dimension of the design of the guide track 180 is changed from the initial design dimension by using the regular data generation tab, the user can directly change the value.

The measurement information processing unit 224 generates the installation state information of the drilling tower 110 and the drilling equipment actually installed on the drill floor 140 based on the measurement data collected through the communication unit 221.

At this time, the measurement information processing unit 224 analyzes the measurement data of the drilling equipment based on this can generate the installation state information of the drilling equipment installed on the actual drill floor 140, as well as the position value of the virtual figure.

5 and 6 illustrate a method of generating installation state information of a drilling tower according to an embodiment of the present invention.

Referring to FIG. 5, the measurement information processor 224 connects four points of the stool to generate an average plane, and uses the two center points of the auxiliary well center and the main well center to connect the x-axis connected in the bow direction of the drilling line. Create In addition, a direction perpendicular to the main well center x-axis on the average plane and the plane is determined by the y-axis.

In addition, referring to the accompanying FIG. 6, four stools are equipped with a drilling tower and generate a vertical z axis at two center points of the auxiliary well center and the main well center, wherein the z axis is the upper center point of the CMC block located at the top of the well center. Is connected to. At this time, the center line connecting the main center of the main well center and the upper center of the CMC block is a reference line for setting up the drilling rig so that it is exactly perpendicular to the plane before the installation of the drilling rig.

The measurement information processing unit 224 may display the figure showing the installation state information in the regular data so as to overlap the main well center and the upper center point so that the user may intuitively check the installation error.

The correction amount calculating unit 225 calculates an error value based on a preset coordinate system by comparing the actual measurement data corresponding to the normal data of the drilling rig, and calculates a correction amount indicating the correction degree of the installation position of the drilling rig based on the calculated error value. Calculate.

The correction amount calculating unit 225 sets the error of the upper center point connected to the main well center to 0, and calculates a correction amount (correction value) relative to the corresponding measurement origin by reflecting the conversion determinant required for conversion in the measurement data. In this case, it is ideal to set the error of the upper center point to 0, but if there is an allowable error in the x and y directions, the correction amount relative to the measurement origin may be calculated.

The database unit 225 stores various programs and data for driving the server 220 for detecting installation error of the drilling rig, and records and stores data generated by the driving.

The controller 227 controls the operation of each unit for driving the server 220.

The controller 227 may store and store the data of the correction amount reflecting the installation error for each drilling rig, and transmit the data to the terminal of the operator in the field so as to directly apply the correction to the drilling rig.

Meanwhile, according to the exemplary embodiment of the present invention, the CMC block is installed at a position corresponding to the upper center point of the main well center, and the upper center point of the CMC block is present on a vertical line of the main well center by design. In other words, all the drilling equipment for vertical movement moves between the upper center point and the main well center of the CMC block, so installing the drilling equipment based on the line segment between the upper center point and the main well center is the ideal setting for operating the equipment. It becomes (Setting).

Therefore, the installation error detection method of the drilling rig will be described below. First, the installation error detection system 200 of the drilling rig according to the embodiment of the present invention uses the vertical segment of the main wheel center and the upper center point in the regular data through FIG. 7. A method of setting a reference coordinate system will be described.

7 illustrates a method of setting coordinate systems of normal data according to an embodiment of the present invention.

Referring to FIG. 7, the installation error detection system 200 for drilling equipment according to an exemplary embodiment of the present invention is normally installed by using dimension information of design data of a drilling tower and drilling equipment installed on the drill floor 140. Automatically generate data (S101).

The installation error detection system 200 of the drilling equipment measures four points of a stool supporting a drilling tower in order to set a virtual space on the drill floor 140 (S102), and connects the measured four points to a square Create a plane of (S103).

And, by measuring the center point of the secondary well center and the main wellster (S104), to generate a lower center point based on the main well center (S105), connecting the two center points of the secondary well center and the main well center to generate the x-axis (S106).

In addition, the upper center point of the preset CMC block is measured in the installed drilling tower (S107), and a z-axis is vertically connected to the upper center point in the main well center, which is the lower center point (S108).

The installation error detection system 200 of the drilling equipment sets the coordinate system for detecting the installation error of the drilling tower and the drilling equipment based on the normal data by matching the regular data and the measured data with respect to the main well center (S109). .

When the installation error detection system 200 of the drilling equipment calculates the z-axis error value of the upper center point measured based on the z-axis value of the normal data, the amount of correction for moving the z-axis of the normal data based on the calculated error value To calculate (S110). Then, by adjusting the x and y directions of the upper center point, the difference between z of the normal data and the measured upper center point z is corrected to be 0 or corrected to coincide within an allowable error range (S111). At this time, since the drilling tower is mounted on the stool in the state of assembly fabrication completed, the upper center point can be corrected in the x and y directions by adjusting the height of four points of the stool.

When the correction on the z-axis of the upper center point is completed, an environment for detecting installation errors of the drilling rigs existing at relative positions based on the line connecting the main well center and the upper center point is created (S112).

As such, when the installation error detection system 200 according to the embodiment of the present invention completes the correction of the point that is the upper center point of the CMC block within the installation error, the upper center point is reset to (0,0, z1). The installation error of the remaining drilling equipment can be detected based on the coordinate system.

On the other hand, Figure 8 is a flow chart illustrating a mounting error detection method of drilling equipment according to an embodiment of the present invention.

Referring to FIG. 8, the installation error detection system 200 of the drilling equipment selects at least one drilling equipment in an environment for detecting an installation error of the drilling equipment set through FIG. 7 (S201). In the following description, it is assumed that the guide track 180 is selected for convenience.

When the guide track 180 is selected in the server 220 of the installation error detection system 200 of the drilling equipment, the measurement unit 210 measures the position of a preset measurement origin and transmits the measurement data to the server 220 ( S202).

The server 220 analyzes the measurement data to display the installation state information of the drilling equipment (S203), and compares the measurement data based on the regular data and automatically calculates an error value of the drilling equipment (S204). In this case, the server 220 may calculate a conversion matrix for moving the measurement point of the guide track 180 to the measurement origin of the corresponding regular data, and multiply the measurement point by the conversion matrix to automatically calculate the correction amount.

If the calculated error value exceeds the preset tolerance (S205; No), the server 220 corrects the installation position according to the correction amount (S206), and re-measures the guide track 180 to verify the correction state. Return to step S202.

On the other hand, if the server 220 determines that the error amount is within the allowable value (S205; Yes), to determine whether the next installation error detection equipment exists (S207), if present, return to step S201 or if not present drilling End the installation error detection of the equipment.

As described above, according to an embodiment of the present invention, the design information of the drilling equipment installed in the drill floor of the drilling vessel is generated as regular data, and the actual measurement data is processed to grasp the installation state information based on the regular data in real time. It works. In addition, it is possible to expect the effect of improving the accuracy and work efficiency in the installation work of the drilling equipment by calculating the installation error of the drilling equipment based on the regular data, and automatically calculate and provide the correction amount accordingly.

In addition, there is an advantage that can increase the efficiency of the operation by transmitting the error amount of the drilling equipment detected to the operator in the field and performing the correction and verification accurately according to the error amount.

The embodiments of the present invention are not limited to the above-described apparatuses and / or methods, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

110: drilling tower 120: moon grass
130: drill pipe 140: drill floor
150: Traveling Block 160: Top Drive
170: dolly system 180: guide track
200: installation error detection system 210: measurement unit
220: server 221: communication unit
222: design unit 223: regular data generation unit
224: measurement information processing unit 225: correction amount calculation unit
226: database unit 227: control unit

Claims (10)

A measurement unit for measuring an installation state of drilling equipment installed on the drill floor of the drilling vessel;
A normal data generation unit generating normal data based on design data of the drilling rig, and setting a coordinate system to the normal data based on a center line segment connecting the well center of the drilling line and an upper center point perpendicular to the drilling center;
A measurement information processing unit for analyzing measurement data collected from the measurement unit and generating installation state information of the drilling equipment based on the measurement data; And
Comparing the measurement data corresponding to the normal data of the drilling equipment to calculate an error value based on the coordinate system, and based on the calculated error value includes a correction amount calculation unit for calculating the correction amount of the drilling equipment,
The measurement information processing unit is configured to display a first figure displaying the installation state information and a second figure displaying the normal data on the basis of an upper center point of the well center and the well center so as to overlap each other. Equipment installation error detection system. The method of claim 1,
A design unit having the design data for installing the drilling rig;
A communication unit which receives the measurement data from the measurement unit;
A database unit for storing various programs and data for detecting installation errors of the drilling rig; And
Control unit for storing the correction amount reflecting the installation error of the drilling equipment to the data and transmitting the correction amount to the terminal of the worker
Installation error detection system of the drilling rig further comprising a. The method of claim 1,
The drilling equipment
At least one of a traveling block, a top drive, a dolly system, a guide track, a drill pipe storage device, a drill pipe feeder, and a motion compensator Installation error detection system of a drilling rig comprising a. The method according to any one of claims 1 to 3,
The measurement data,
The installation error detection system of the drilling equipment, characterized in that it comprises the identification information of the drilling equipment and the measurement point information, which is the actual measurement coordinates for the measurement origin that is a target portion that requires measurement. delete The method of claim 4, wherein
The correction amount calculation unit,
Installation error detection system of the drilling equipment, characterized in that for calculating the relative correction amount of the corresponding measurement origin by reflecting the conversion matrix required for the conversion of the measurement data. a) generating normal data based on design data of the drilling rig installed on the drill floor of the drilling line, and setting a coordinate system to the normal data based on the center line segment connecting the well center of the drilling line and the upper center point perpendicular to the drilling line; ;
b) collecting the measurement data by measuring the installation state of the drilling equipment;
c) analyzing the measurement data and generating installation state information of the drilling rig based on the measurement data; And
d) calculating the error value based on the coordinate system by comparing the measurement data corresponding to the normal data of the drilling equipment, and calculating the correction amount of the drilling equipment based on the calculated error value;
In the step d), the first figure displaying the installation state information and the second figure displaying the normal data on the basis of the upper center point of the well center and the well center are overlapped. How to detect installation error of equipment. The method of claim 7, wherein
After the step d)
Correcting an installation position according to the error value if the error value exceeds a set tolerance value; And
Re-measuring and verifying the installation state of the drilling equipment according to the installation position correction
Installation error detection method of the drilling rig further comprising a. 9. The method according to claim 7 or 8,
Step d),
And transmitting the correction amount reflecting the installation error of the drilling rig to the terminal of the operator. The method of claim 7, wherein
The step a)
Generating a plane by measuring a stool supporting a drilling tower to set a virtual space on a drill floor;
Measuring a center point of an auxiliary well center and a main well sunter, and connecting two center points of the auxiliary well center and the main well center to generate plane coordinates (x, y) of the main well center as a lower center point;
Measuring a preset upper center point located at the center of the drilling tower, and generating a z-axis vertically connected to the upper center point at a main well center, which is a lower center point; And
The step of setting the coordinate system for detecting the installation error of the drilling tower and drilling equipment based on the normal data by matching the normal data and the measurement data around the main well center.
Installation error detection method of a drilling rig comprising a.

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