KR20160011789A - A Dynamic Positioning System - Google Patents
A Dynamic Positioning System Download PDFInfo
- Publication number
- KR20160011789A KR20160011789A KR1020140092791A KR20140092791A KR20160011789A KR 20160011789 A KR20160011789 A KR 20160011789A KR 1020140092791 A KR1020140092791 A KR 1020140092791A KR 20140092791 A KR20140092791 A KR 20140092791A KR 20160011789 A KR20160011789 A KR 20160011789A
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- KR
- South Korea
- Prior art keywords
- external force
- marine structure
- sea
- sensing unit
- marine
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Feedback Control In General (AREA)
Abstract
Description
The present invention relates to a position control system.
Due to the recent rapid industrialization, the use of resources such as oil has skyrocketed, and the stable production and supply of oil is becoming a very important issue. However, the oil field in the continental or coastal waters has already been drilled. In recent years, interest has been focused on the development of a deep-sea deep-sea oil field. Drilling is generally used to drill deep-sea oilfields.
Drill ship is an offshore structure that is equipped with advanced drilling equipment and is built in a shape similar to that of a ship so that it can be sailed by its own power. It is capable of collecting raw oil or gas in deep sea area where an offshore platform can not be installed, It is advantageous that the drilling can be terminated and the drilling can be carried out by moving to another point.
Such drillings include Derrick, which has a Moonpool structure in a vertically penetrating form and is located above the drum and has drilling rigs. Hereinafter, the process of drilling the bottom of the drill ship will be described.
First, the drill ship uses its own power to move to the drilling area and drives a Dynamic Positioning System (DPS) using a plurality of thrusters to maintain the position.
Thereafter, the drill bit is connected to a drill pipe by a drill bit, and a plurality of drill pipes are connected by a sufficient length by using a Hoisting System and a Handling System provided in Derrick, And the drilling pipe is rotated through a rotating system to form a borehole.
Once drilling is completed, Derek picks up the drill pipe, installs the casing pipe on the borehole, and performs the cementing process to fill the concrete between the casing pipe and the borehole. The drilling operation used and the casing and cementing work for installing the casing pipe are repeatedly performed to maintain the shape of the borehole having a certain depth.
When the casing pipe is installed enough to prevent the borehole from falling down, BOP (Blow Out Preventer) is connected to the riser to be connected to the borehole. In this case, the inside of the riser becomes the path of movement of the drill pipe and casing pipe.
However, lubrication and cooling of the drill bit in the drilling process, and processing of the crushed material such as rock mass produced in the borehole are required. Therefore, the drill feeds the mud to the inside of the drill pipe so that the mud is discharged at the end of the drill bit, and after the mud performs lubrication and cooling of the drill bit, (Mud Circulation System) is used. The recovered mud is re-used after the pulverized material is filtered.
The drillship repeatedly performs drilling, casing and cementing operations until the drill bit reaches the well, while driving this mud circulation system. In this case, as the diameter of the casing pipe used in the casing work becomes smaller, Drilling can be implemented continuously by replacing small drill bits.
As such, the drill rig has a system for installing and using pipes and risers, a system using a mud, and the like. In order to smoothly perform drilling work using such a system, a drill hole structure, a derrick structure, and a load structure Is required to be disposed within a certain space, so that research and development are being continuously carried out as a result of a high technological power being required.
However, in order to fix the position of the drill bit to a predetermined point, conventionally, after locating the drill bit through GPS, the position of the drill bit is adjusted by operating the thruster afterwards, And there is also a problem in that the influence of the external force applied to the drill can not be considered at all.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a method and apparatus for measuring a wave or the like using an external force sensing unit floating on a sea surface or provided outside a sea structure, And to provide a position control system that enables lexical position control instead of posterior position control.
It is also an object of the present invention to provide a position control system capable of detecting an external force such as a wave and analyzing how the position of a marine structure is to be changed thereby to minimize a position change by operating a thruster in advance .
According to another aspect of the present invention, there is provided a position control system for controlling a position of a marine structure including a vessel, the system comprising: an external force sensing unit for sensing an external force in a space where the marine structure is located; An analysis unit for analyzing an influence of the external force applied to the marine structure; And a position compensating unit for controlling the position of the sea structure in consideration of the influence of the external force, wherein the external force sensing unit senses an external force in a state in which the sea structure is spaced apart from the sea structure by a predetermined distance, Wherein the analysis unit calculates an extent to which the position of the marine structure is changed by the external force, and the position compensating unit calculates the position of the marine structure before or at the time when the external force affects the marine structure, In the direction for canceling the positional change caused by the positional change.
Specifically, the external force sensing unit may sense an external force that changes the position of the sea structure.
Specifically, the external force sensing unit may sense an external force in a floating state on a sea surface in a space where the sea structure is located.
Specifically, the external force sensing unit may be installed on an outer surface of the sea structure to sense an external force.
Specifically, the external force sensing unit may be provided in the sea structure to sense an external force using a radar.
Specifically, the external force sensing unit may sense an external force to be applied to the marine structure after a predetermined time.
Specifically, the analysis unit may predict the extent to which the position of the sea structure is changed by the external force.
Specifically, the position compensating unit may adjust the position of the sea structure so as to correspond to the degree of position change of the sea structure calculated by the analyzing unit.
Specifically, the position compensating unit may adjust a position of the sea structure by operating a plurality of thruster units provided in the sea structure.
In the position control system according to the present invention, the external force sensing unit is suspended on the sea surface or installed outside the sea structure, and the influence of the external force to be applied to the sea structure is calculated by analyzing the waves sensed by the external force sensing unit, By implementing the position control, the efficiency of the position control can be maximized.
Further, the position control system according to the present invention predicts that the position of the marine structure will be changed due to an external force such as a wave, drives the thruster in consideration thereof, and minimizes the position shift by canceling the positional change caused by the external force have.
1 is a side view of a marine structure having a position control system according to an embodiment of the present invention.
2 is a plan view of a marine structure having a position control system according to an embodiment of the present invention.
3 is a side view of a marine structure having a position control system according to an embodiment of the present invention.
4 is a block diagram of a position control system in accordance with an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a side view of a marine structure having a position control system according to an embodiment of the present invention.
Referring to FIG. 1, the
The
The
However, in order to prevent the interference of the flow between the thruster (s) 30, the thruster (s) 30 may be arranged to be shifted from each other in the front and rear positions or the right and left positions. That is, the
3 is a side view of a marine structure having a position control system according to an embodiment of the present invention, and FIG. 4 is a side view of the marine structure with a position control system according to an embodiment of the present invention. Figure 2 is a block diagram of a position control system in accordance with an embodiment of the invention.
2 to 4, a
The external
The external
The external
At this time, the external
The external
The external
The external
The external
2, the external
In addition to detecting the external force through the radar, the external
The external
When the external
Of course, the present invention does not limit the arrangement of the external
The external
In order for the external
The
That is, the external
If the
At this time, a method of analyzing the change of the position of the
The degree of position change of the
The
The external force considered by the
That is, the
Specifically, the external force is a wave approaching the left side of the
Or the
Thus, the
The
As described above, in the present embodiment, the position of the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
1: marine structure 10:
20: Derrick 30: Thruster
40: Position control system 41: External force sensing unit
42: Analysis section 43: Position compensation section
Claims (9)
An external force sensing unit for sensing an external force in a space where the marine structure is located;
An analysis unit for analyzing an influence of the external force applied to the marine structure; And
And a position compensator for controlling the position of the sea structure in consideration of the influence of the external force,
The external force sensing unit senses an external force in a space where the sea structure is located and is spaced apart from the sea structure by a predetermined distance,
The analysis unit calculates an extent to which the position of the sea structure is changed by the external force,
Wherein the position compensating unit adjusts the position of the marine structure before or at the time when the external force exerts an influence on the marine structure in a direction to cancel the position change due to the external force.
And detects an external force for changing the position of the marine structure.
And detects an external force in a floating state on a sea surface in a space where the sea structure is located.
And an external force installed on an outer surface of the marine structure to sense an external force.
And an external force is detected by using a radar provided in the marine structure.
And detects an external force to be applied to the marine structure after a predetermined time.
And estimates the degree to which the position of the marine structure is changed by the external force.
And adjusts the position of the marine structure so as to correspond to the degree of change of the position of the marine structure calculated by the analysis unit.
Wherein a plurality of thruster units provided in the marine structure are operated to adjust the position of the marine structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020140092791A KR20160011789A (en) | 2014-07-22 | 2014-07-22 | A Dynamic Positioning System |
Applications Claiming Priority (1)
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KR1020140092791A KR20160011789A (en) | 2014-07-22 | 2014-07-22 | A Dynamic Positioning System |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190111842A1 (en) * | 2016-03-31 | 2019-04-18 | Faraday&Future Inc. | Camera based auto drive auto charge |
-
2014
- 2014-07-22 KR KR1020140092791A patent/KR20160011789A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190111842A1 (en) * | 2016-03-31 | 2019-04-18 | Faraday&Future Inc. | Camera based auto drive auto charge |
US11117517B2 (en) * | 2016-03-31 | 2021-09-14 | Faraday&Future Inc. | Camera based auto drive auto charge |
US11707999B2 (en) | 2016-03-31 | 2023-07-25 | Faraday & Future Inc. | Camera based auto drive auto charge |
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