KR20140011576A - Drilling simulation system interfaced with a dynamic positioning module and for simulating drilling equipment of the same - Google Patents

Abstract

The present invention relates to a drilling simulation system connected to a DP module and a simulation method thereof capable of simulating drilling equipment by controlling the movement of a drilling ship which responses to marine environments. According to an aspect of the present invention, provided is a drilling simulation system comprising: a DP module for generating control power in each thruster for maintaining the horizontal position of the drilling ship during a drilling process based on marine environments and for providing the control power to the thrusters installed under the drilling ship; a movement interpretation module for calculating the horizontal movement value of the corresponding drilling ship using the control power generated by the DP module and external fluid power applied to the drilling ship with the marine environments; and a simulator for simulating the drilling equipment with the movement of the drilling ship based on the horizontal movement value calculated by the movement analysis module. [Reference numerals] (11) Controller; (13) DP module; (15) Motion analysis module; (16) Interface; (17) Simulator; (19) Viewer

Description

DRILLING SIMULATION SYSTEM INTERFACED WITH A DYNAMIC POSITIONING MODULE AND FOR SIMULATING DRILLING EQUIPMENT OF THE SAME}

The present invention relates to a drilling simulation system associated with a DP module and a simulation method thereof, and more particularly, to a DP module capable of performing simulation of drilling equipment by controlling the movement of a drilling vessel responding to a marine environment with a DP module. It relates to a linked drilling simulation system and a simulation method thereof.

In recent years, limited global resources have gradually come to an end due to the rapid industrialization and industrial development trends internationally, and stable production and supply of crude oil has become a very important issue. Recently, along with the development of oil exploration technology on the seabed, large oil companies have felt the necessity of drilling rig with drilling facilities suitable for development of marginal field or deep sea oil field, It is a reality that is actively searching for development.

The drill ship is a device that explores and drills marine underground resources such as crude oil and gas from the ocean. The drill ship is designed to enable the extraction of crude oil and gas from the deep sea area where the offshore platform can not be installed or the sea where the waves are severe. The drill ship has semi-submersible drilling rig and drill ship In order to perform operations at sea, advanced manufacturing techniques are required.

In case of offshore drilling, DP (Dynamic Positioning) module is equipped to minimize movement during drilling. The DP module controls to maintain a fixed position during drilling by moving a plurality of thrusters (Thrusters) attached to the lower part of the drilling vessel, and moves the drilling vessel.

Such drilling vessels are moved horizontally under the influence of the marine environment (waves, tidal currents), providing a thrust force to a plurality of thrusters so that the DP module maintains a specified magnetic position. At this time, the DP module receives the position coordinates from the GPS satellites and generates a propulsion force corresponding to the deviation level when the position coordinates are out of a predetermined range, and controls them to return to their positions.

However, the conventional drilling simulator does not consider the influence of the marine environment, and since only the simulation of drilling equipment is performed on a fixed platform, it is impossible to perform the simulation according to the marine environment considered for the drilling ship in the actual sea.

An object of the present invention is to provide a drilling simulation system and a simulation method associated with a DP module that can perform the simulation of the drilling equipment by controlling the movement of the drilling vessel in response to the marine environment with the DP module.

According to an embodiment of the present invention for achieving the above object, to generate a plurality of thruster-specific control force for maintaining the horizontal position of the drilling vessel during drilling at sea in accordance with the marine environment, the generated control force to the lower portion of the drilling vessel A DP module provided to a plurality of installed thrusters; A motion analysis module for calculating a horizontal plane motion value of the corresponding drilling line by using the external force of the fluid acting on the drilling line by the marine environment and the control force generated by the DP module; And it provides a drilling simulation system including a simulator for performing a simulation of the drilling equipment reflecting the movement of the drilling line based on the horizontal plane motion value calculated from the motion analysis module.

Drilling simulation system according to the invention preferably further comprises an interface for connecting the motion analysis module and the DP module with the simulator.

In addition, the drilling simulation system according to the present invention preferably further includes an operation controller for inputting a movement command for manually instructing the movement of the drilling line to the DP module.

In addition, the drilling simulation system according to the present invention preferably further comprises a viewer for displaying the movement of the drilling line reflecting the calculated horizontal motion value through the interface.

Preferably, the DP module further generates pitch angles and rotational speeds of the plurality of thrusters and displays the generated pitch angles and rotational speeds through the viewer.

In addition, according to another embodiment of the present invention, in accordance with the marine environment to generate a plurality of thruster-specific control force for maintaining the horizontal position of the drilling vessel during drilling at sea and the generated control force to a plurality of thrusters installed below the drilling vessel Providing; Calculating a horizontal plane motion value of the drilling line by using the external force of the fluid acting on the drilling line by the marine environment and the control force generated by the generating step; And performing a simulation of the drilling rig reflecting the movement of the drilling line based on the horizontal plane motion value calculated by the calculating step.

The providing step includes receiving a movement command for instructing the movement of the drilling line manually by an operation controller, wherein the movement command includes the plurality of thruster-specific control forces, pitch angles, and rotational speeds. Do.

In addition, in the simulation method of the drilling simulation system according to the present invention, after the calculating step, the movement of the drilling line and the plurality of thrusters according to the horizontal plane motion value of the drilling line and the pitch angle and rotation angle for each of the plurality of thrusters. Preferably, the method further includes displaying an operating state.

According to an embodiment of the present invention, there is an effect that the drilling simulation can be performed under the horizontal plane motion of the drilling line caused by the marine environment. In particular, it is possible to simulate drilling under a variety of environmental conditions, and to simulate work in offshore environments, such as drilling in extreme conditions.

In addition, according to an embodiment of the present invention can be instructed to manually move the drilling line through the operation controller, there is an effect that can be manually controlled the horizontal movement of the drilling line.

In addition, according to an embodiment of the present invention through the viewer there is an effect that can observe the horizontal movement of the drilling line and the operating state of the plurality of thrusters installed on the lower portion of the drilling line.

1 is a block diagram for explaining a drilling simulation system according to an embodiment of the present invention,
2 is an operation flowchart for explaining a simulation method of a drilling simulation system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a drilling simulation system according to an embodiment of the present invention.

Referring to FIG. 1, a drilling simulation system 10 according to an embodiment of the present invention may include a manipulation controller 11, a DP module 13, a motion analysis module 15, an interface 16, a simulator 17, and a viewer ( 19).

The operation controller 11 can select on / off of the DP module 13 and automatic control and manual control options of the DP. In the manual control, the transfer command is transferred to the DP module 13 to the desired position. In this case, the movement command includes a plurality of thrusters (not shown) for each control force, pitch angle, and rotational speed installed below the drilling line. Pitch angles and rotational speeds for each of the plurality of thrusters are information displayed to the user through the viewer 19.

When the DP is selected for automatic control of the DP by the operation controller 11, the DP module 13 compares the reference position coordinates with the position coordinates calculated by the motion analysis module 15 to determine whether thrust should be generated. For example, the DP module 13 generates a plurality of thruster control force, pitch angle and rotation angle to return to the reference position coordinate when the calculated position coordinate is out of a predetermined range from the reference position coordinate. Provide the angle and rotation angle to the corresponding thrusters respectively. In this case, a plurality of thrusters may be installed at the bow and the stern, and two pairs of thrusters may be installed at each of the eight thrusters at the bow and the stern.

The marine environment includes waves, tides, and the like, and may select one of the marine environments that can be considered on the drilling vessel, or directly enter the marine environment.

In such a marine environment, the DP module 13 generates a plurality of thruster-specific control forces, pitch angles, and rotational speeds to maintain the horizontal position of the drilling line during drilling, and transfers the generated control force, pitch angles, and rotational speeds to the corresponding thrusters. In addition, the control force, pitch angle, and rotational speed included in the movement command received by the operation controller 11 are provided to the thruster to move the thruster so as to maintain a fixed position during drilling.

The DP module 13 is a device for maintaining a constant position of a ship through positioning and using a propulsion device using a GPS (Global Positioning System) without using an existing mooring device. Unlike fixed offshore structures with subsea drilling, drill ships can be drilled at different positions, semi-submersible rigs, or can be operated independently while breaking ice at the poles. It is provided in an ice breaker or the like.

Thrusters, which are omnidirectional propellers capable of turning 360 degrees of propellers, are used as propellers used in the DP module 13 so that ships can freely propel, reverse propel or rotate by these thrusters. do.

The motion analysis module 15 calculates the external force of the fluid acting on the drilling line in the marine environment. In addition, the motion analysis module 15 calculates the horizontal plane motion value of the drilling line using the following equation 1 for the external force of the fluid and the control force generated by the DP module 13.

Equation 1 is an equation of motion considering the external force (wave) due to the fluid, and has a linear and rotational displacement in the x, y, z axis direction of the drilling line floating on the water, but only the motion in the horizontal plane Therefore, x is a vector value having three types of x-axis, y-axis linear motion, and z-axis rotational motion. M is mass, A is added mass, B is damping force, C is restoring force coefficient, and M, A, B and C are preset constant values. X (t) is an external force and includes the control force calculated by the DP module 13 and the force by current.

The DP module 13 and the exercise analysis module 15 are communicatively connected to the simulator 17 via the interface 16 and communicatively connected to the viewer 19 via the interface 16. The simulator 17 is electrically connected to the viewer 19 so that the observation information (for example, the movement of the drilling line, the operation state of the thruster, etc.) among the drilling simulation results can be displayed without passing through the interface 16. .

The simulator 17 receives the horizontal plane motion value from the motion analysis module 15 via the interface 16 and receives control force for each thruster installed in the bow and the stern through the interface 16 to reflect the marine environment. Drilling equipment can be simulated according to movement.

 At this time, the simulator 17 may transmit the drilling operation and the operation state (pitch angle and rotational speed) of the thruster to the viewer 19 and display it on the viewer 19. Here, the viewer 19 may display the movement of the drilling line according to the horizontal motion value received through the interface 16.

The simulation method of the drilling simulation system having such a configuration is as follows.

2 is an operation flowchart for explaining a simulation method of a drilling simulation system according to an embodiment of the present invention.

2, the drilling simulation system 10 designates the marine environment (S11). The marine environment includes waves, tides, and the like, or may be designated directly or selected from a variety of pre-stored environments, ie marine environments considered in the drilling vessel.

The drilling simulation system 10 generates a plurality of thruster-specific control forces for maintaining the horizontal plane position of the drilling ship in the designated marine environment, for example, when the automatic control option of the DP is selected (S13). Here, in addition to the plurality of thruster-specific control force, the pitch angle and rotation speed for each thruster may be further generated.

When the manual control option of the DP is selected, a movement command including a plurality of thruster-specific control forces, pitch angles, and rotational speeds input through the operation controller 11 is transmitted to the DP module 13.

The drilling simulation system 10 calculates the external force of the fluid acting on the drilling vessel in the marine environment (S15).

Thereafter, the drilling simulation system 10 calculates the horizontal plane motion value of the drilling line using the external force of the fluid and the control force generated in the above-described step S13 (S17). The horizontal plane motion value is calculated by substituting the external force and the control force of the fluid in Equation 1 described above. The calculated horizontal motion values of the drilling line are transmitted to the simulator 17 and the viewer 19 via the interface 16.

Drilling simulation system 10 performs a simulation of the drilling equipment reflecting the movement of the drilling line based on the horizontal plane motion value of the drilling line (S19). Simulation results of the drilling equipment may provide observation information through the viewer (17). In particular, the viewer 19 may display the movement of the drilling line, the drilling operation, and the pitch angle and rotation speed for each of the plurality of thrusters.

With such a configuration, the drilling work reflecting the movement of the drilling ship in the marine environment during the drilling work in the drilling ship can be trained.

For example, in the case of a blow out preventer (BOP) landing operation, the BOP can be lowered in the correct position by the horizontal motion calculated for the marine environment and the control of the DP module. BOP landing simulations reflecting horizontal motion values are possible.

The invention being thus described, it will be obvious that the same way may be varied in many ways. Such modifications are intended to be within the spirit and scope of the invention as defined by the appended claims.

10: drilling simulation system
11: operation controller 13: DP module
15: motion analysis module 16: interface
17: Simulator 19: Viewer

Claims (8)

A DP module for generating a plurality of thruster-specific control forces for maintaining the horizontal position of the drilling vessel during drilling at sea in accordance with the marine environment, and providing the generated control force to the plurality of thrusters installed under the drilling vessel;
A motion analysis module for calculating a horizontal plane motion value of the corresponding drilling line by using the external force of the fluid acting on the drilling line by the marine environment and the control force generated by the DP module; And
Drilling simulation system including a simulator for performing a simulation of the drilling equipment reflecting the movement of the drilling line based on the horizontal plane motion value calculated from the motion analysis module. The method according to claim 1,
And an interface for connecting the motion analysis module and the DP module to the simulator. The method according to claim 1,
And a manipulation controller for inputting a movement command for manually instructing movement of the drilling line to the DP module. The method according to claim 2,
Drilling simulation system further comprises a viewer for displaying the movement of the drilling line reflecting the calculated horizontal plane motion value through the interface. The method of claim 4,
The DP module further generates a pitch angle and rotational speed for each of the plurality of thrusters, and displays the generated pitch angle and rotational speed through the viewer. Generating a plurality of thruster-specific control forces for maintaining the horizontal position of the drilling line during drilling at sea in accordance with the marine environment, and providing the generated control force to the plurality of thrusters installed under the drilling line;
Calculating a horizontal plane motion value of the drilling line by using the external force of the fluid acting on the drilling line by the marine environment and the control force generated by the generating step; And
And a simulation of drilling equipment reflecting the movement of the drilling line based on the horizontal plane motion value calculated by the calculating step. For claim 6,
The providing step
Receiving a movement command for instructing movement of the drilling line manually by an operation controller,
The movement command is a simulation method of the drilling simulation system, characterized in that it comprises a control force, a pitch angle and a rotational speed for each of the plurality of thrusters. The method of claim 7,
After the calculating step,
Simulating the drilling simulation system, characterized in that further comprising the step of displaying the movement of the drilling line and the operation state of the plurality of thrusters in accordance with the horizontal motion value of the drilling line and the pitch angle and rotation angle for each of the plurality of thrusters Way.

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