Construction system for laying subsea pipelines

Abstract

The utility model discloses a construction system for laying a subsea pipeline, which comprises a pipe laying ship for laying the subsea pipeline, the pipe laying ship is provided with a plurality of monitoring points, and the positions of the plurality of monitoring points on the pipe laying ship are different; the design route of the subsea pipeline is an arc route, and parameters of the arc route comprise a circle center, a radius, a starting point and an ending point; the pipe laying ship is provided with a pipe for pipe laying, a pipe supporting frame for bearing the pipe and a rail, one end of the pipe supporting frame is fixedly connected with the pipe laying ship and connected with the rail, and the other end of the pipe supporting frame extends out of the pipe laying ship. A pipeline located on the pipe laying ship is arranged in the track, and the track is used for conveying the pipeline to the pipe supporting frame. The positioning mechanism, the measuring mechanism and the control mechanism are arranged on the pipe laying ship; the control mechanism calculates a theoretical track line of each monitoring point according to parameters of the monitoring points and the arc route; the control mechanism is connected with the positioning mechanism and the measuring mechanism. The construction system for laying the subsea pipeline can enable the pipe laying ship to lay the subsea pipeline on the arc section route along the optimal path.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of ocean engineering surveying and mapping, and in particular to a construction system for laying a submarine pipeline. BACKGROUND

[0002] As an important transport channel for the development of marine oil and gas resources, submarine pipelines play a key role in the transportation of oil and gas, and can transport the developed energy from one place to another. The main methods for laying submarine pipelines include the stinger method, S-shaped pipe-laying method, J-shaped pipe-laying method, and reel-type pipe-laying method. Compared with each other, the stinger method is suitable for cases where the pipeline length and towing distance are short, the S-shaped pipe-laying method has the largest pipe-laying diameter and the fastest pipe-laying speed, the reel-type pipe-laying method has the smallest pipe-laying diameter and is a flexible hose, and the J-shaped pipe-laying method has the slowest pipe-laying speed. The S-shaped pipe-laying method is the most widely used method for laying submarine pipelines at present.

[0003] With the rapid increase in energy demand, the development area of marine oil and gas fields is becoming wider and wider, and is constantly developing towards deep water, so the technical requirements for laying submarine pipelines are becoming higher and higher. Among the many technical problems faced, scholars at home and abroad have conducted extensive research, and one of the research directions is to accurately lay the pipeline on the designed route. The designed route of the submarine pipeline is generally a straight line segment, an arc line segment, or a combination of the two. The pipe-laying ship needs to sail along the designed route and lay the pipeline according to the set position and direction, and for the arc line segment, the ship position and heading need to be constantly adjusted to ensure that the pipeline is laid on the arc line segment. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, one object of the present specification is to provide a construction system for laying a submarine pipeline, which can enable a pipe-laying ship to lay a submarine pipeline along an optimal path on an arc line segment route.

[0005] To achieve the above object, the embodiment of the present specification provides a construction system for laying a submarine pipeline, comprising:

[0006] A pipe-laying ship for laying a submarine pipeline, the pipe-laying ship being provided with a plurality of monitoring points, the plurality of monitoring points being located at different positions on the pipe-laying ship; the designed route of the submarine pipeline being an arc line route, the parameters of the arc line route including a center, a radius, a starting point, and an ending point; the pipe-laying ship being provided with a pipeline for pipe-laying, a stinger for carrying the pipeline, and a track, one end of the stinger being fixedly connected to the pipe-laying ship and connected to the track, and the other end of the stinger extending out of the pipe-laying ship; the pipeline located on the pipe-laying ship being arranged in the track, and the track being used for conveying the pipeline to the stinger;

[0007] A positioning mechanism arranged on the pipe-laying ship, used for monitoring the actual positions of the plurality of monitoring points;

[0008] a measuring mechanism arranged on the pipelaying vessel, for measuring the heading of the pipelaying vessel;

[0009] a control mechanism arranged on the pipelaying vessel, the control mechanism being capable of calculating a theoretical track line of each of the monitoring points according to the parameters of the arcuate route and the monitoring points; the control mechanism being connected to the positioning mechanism and the measuring mechanism respectively, for receiving the actual positions measured by the positioning mechanism and the heading measured by the measuring mechanism, and calculating the positional relationship between the actual positions and the theoretical track lines of each of the monitoring points, and calculating the deviation between the actual positions and the theoretical track lines, and giving a warning when the deviation exceeds a predetermined value.

[0010] As a preferred embodiment, the number of the monitoring points is three.

[0011] As a preferred embodiment, the monitoring points include a touchdown point, which is the position where the pipeline contacts the seabed when the pipelaying vessel is laying the pipeline.

[0012] As a preferred embodiment, the monitoring points further include a stinger end point, which is the end of the stinger far away from the pipelaying vessel.

[0013] As a preferred embodiment, the monitoring points further include a pipeline welding point.

[0014] As a preferred embodiment, the positioning mechanism includes a GNSS positioning instrument.

[0015] As a preferred embodiment, the measuring mechanism includes a compass.

[0016] As a preferred embodiment, the control mechanism is provided with a display part for displaying the deviation.

[0017] As a preferred embodiment, the control mechanism includes a computer, and the display part is a display of the computer.

[0018] As a preferred embodiment, the control mechanism uses wireless network to transmit data and communicate with the positioning mechanism and the measuring mechanism. Advantages

[0019] The construction system for laying the submarine pipeline provided by the embodiment is provided with a pipelaying ship, and a positioning mechanism, a measuring mechanism and a control mechanism are arranged on the pipelaying ship, the theoretical track lines of the monitoring points can be calculated by the control mechanism according to the parameters of the monitoring points and the arc line route before the pipelaying operation, and the theoretical track lines of different monitoring points are different; during the pipelaying operation, the actual positions of the monitoring points and the heading of the pipelaying ship are monitored in real time by the positioning mechanism and the measuring mechanism and are sent to the control mechanism, the positional relationship between the actual positions of the monitoring points and the theoretical track lines is solved by the control mechanism, the deviation amount between the actual positions and the theoretical track lines is calculated, and a pre-warning is made when the deviation amount exceeds a predetermined value, so that the pipelaying ship can lay the submarine pipeline along the optimal path on the arc line segment route.

[0020] Specific embodiments of the present application are described in detail below with reference to the following illustrations and drawings, indicating the principles of the present application can be used. It should be understood that the embodiments of the present application are not limited in scope as a result.

[0021] Features described and / or illustrated with respect to one embodiment can be used in one or more other embodiments in the same or similar manner, in combination with or in place of features in other embodiments.

[0022] It should be emphasized that the term "comprises / comprising" as used herein indicates the presence of the stated features, integers, steps or components, but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a structural schematic view of a construction system for laying a submarine pipeline provided in the embodiment;

[0025] Figure 2 is a top view of Figure 1

[0026] Figure 3 is a schematic view of a design route of a submarine pipeline provided in the embodiment;

[0027] Figure 4 is a schematic view of the theoretical track lines of the monitoring points;

[0028] ​Figure 5 A schematic view of a profile structure of a stinger provided for one embodiment.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, pipelaying vessel; 2, positioning mechanism; 3, measuring mechanism; 4, pipeline; 5, stinger; 6, sea surface; 7, seabed; 8, theoretical track line of touchdown point; 9, theoretical track line of stinger end point; 10, theoretical track line of pipeline weld point; 11, track; O, center of circle; A, start point; B, end point; R, radius; Z, touchdown point; T, stinger end point; H, pipeline weld point. DETAILED DESCRIPTION

[0031] In order to make the technical personnel in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0032] It should be noted that when an element is referred to as being "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Please refer to Figures 1 to 4 The embodiment of the present application provides a construction system for laying a submarine pipeline, comprising: a pipelaying vessel 1, a positioning mechanism 2, a measuring mechanism 3 and a control mechanism.

[0035] The pipelaying vessel 1 is used for laying a submarine pipeline. The pipelaying vessel 1 is provided with a plurality of monitoring points, and the positions of the plurality of monitoring points on the pipelaying vessel 1 are different. The number of the monitoring points is at least 3. For example, the number of the monitoring points is 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 or more. Figure 3As shown, the design route of the submarine pipeline is an arc route, and the shape of the arc route is an arc. The parameters of the arc route include a center O, a radius R, a starting point A, and an ending point B, i.e., the shape of the design route is an arc segment from the point A to the point B. The pipe laying ship 1 is provided with a pipeline 4 for pipe laying, a pipe supporting frame 5 for carrying the pipeline 4, and a track 11. One end of the pipe supporting frame 5 is fixedly connected to the pipe laying ship 1 and connected to the track 11, and the other end extends out of the pipe laying ship 1. The pipeline 4 located on the pipe laying ship 1 is arranged in the track 11, and the track 11 is used to deliver the pipeline 4 to the pipe supporting frame 5.

[0036] As shown in the figure, Figure 5 The pipe supporting frame 5 includes oppositely arranged support main inclined plates 51 and a bottom supporting plate fixedly connected between the two support main inclined plates 51. The inner wall of the support main inclined plate 51 is connected with a rolling unit 52. In order to ensure the structural support strength, the bottom supporting plate includes an upper bottom supporting plate 53 and a lower bottom supporting plate 54 arranged in parallel. The thickness of the upper bottom supporting plate 53 is greater than that of the lower bottom supporting plate 54. The lower end of the support main inclined plate 51 is fixedly connected to the deck of the pipe laying ship 1. The rolling unit 52 includes a rolling support fixedly connected to the inner wall of the support main inclined plate and a roller rolling connected to the rolling support, so as to facilitate the pipeline delivery.

[0037] Specifically, the number of monitoring points is preferably 3. Too few monitoring points will lead to inaccurate monitoring. For example, when there are two monitoring points, if the pipe laying ship 1 deviates greatly during operation, the positions of the two monitoring points may not deviate significantly, so that the operation cannot be stopped in time, resulting in that the pipe laying path does not meet the requirements. Too many monitoring points will increase the monitoring cost and is not conducive to the improvement of construction efficiency.

[0038] As shown in the figure, Figure 1 and Figure 2 As shown in the figure, the pipe laying ship 1 is located on the sea surface 6, and the pipe laying ship 1 is provided with a pipeline 4 for pipe laying. The monitoring points include a touchdown point Z, which is the position where the pipeline 4 contacts the seabed 7 when the pipe laying ship 1 lays the pipeline.

[0039] Further, the pipe laying ship 1 is provided with a pipe supporting frame 5 for carrying the pipeline 4, and the pipeline 4 on the pipe laying ship 1 enters the sea through the pipe supporting frame 5. The monitoring points further include a pipe supporting frame end point T. The pipe supporting frame 5 is relatively fixed in position with the pipe laying ship 1. The pipe supporting frame end point T is the end of the pipe supporting frame 5 away from the pipe laying ship 1.

[0040] Further, the monitoring points further include a pipeline welding point H. The three monitoring points are all related to the pipeline 4 and are positions of the pipeline 4 in different states, so that the actual positions can be better monitored and the deviation of the pipelaying vessel 1 can be prevented. For a single pipeline 4, the pipeline 4 moves along the track of the pipelaying vessel 1, the stinger 5, the sea surface 6 and the seabed 7. When a pipeline 4 finishes the installation of the seabed 7, a new pipeline 4 needs to be welded at the pipeline welding point H of the pipelaying vessel 1.

[0041] In the embodiment, the positioning mechanism 2 is fixedly arranged on the pipelaying vessel 1 and is used for monitoring the actual positions of the monitoring points. Preferably, the positioning mechanism 2 is a GNSS (Global Navigation Satellite System) positioning instrument.

[0042] In the embodiment, the measuring mechanism 3 is fixedly arranged on the pipelaying vessel 1 and is used for measuring the heading of the pipelaying vessel 1. The measuring mechanism 3 is arranged adjacent to the positioning mechanism 2. Preferably, the measuring mechanism 3 is a compass. The compass and the GNSS positioning instrument complement each other in the navigation system and provide accurate navigation information together; the compass provides basic heading indication in the case that there is no GNSS positioning instrument signal, and the GNSS positioning instrument provides accurate position information of the monitoring points when there is a signal, and the combination of the two can improve the reliability and accuracy of navigation.

[0043] In the embodiment, the control mechanism is fixedly arranged on the pipelaying vessel 1. The control mechanism can calculate the theoretical track lines of the monitoring points according to the parameters of the monitoring points and the arc route. Figure 4 As shown in the figure, the control mechanism calculates the theoretical track line 8 of the touchdown point Z, the theoretical track line 9 of the stinger end point T and the theoretical track line 10 of the pipeline welding point H.

[0044] Specifically, the control mechanism is connected with the positioning mechanism 2 and the measuring mechanism 3 respectively, is used for receiving the actual positions measured by the positioning mechanism 2 and the heading measured by the measuring mechanism 3, and is used for calculating the positional relationship between the actual positions and the theoretical track lines of the monitoring points, calculating the deviation amount between the actual positions and the theoretical track lines, and making a pre-warning when the deviation amount exceeds a predetermined value. The control mechanism is provided with a display part for displaying the deviation amount.

[0045] Preferably, the control mechanism is a computer, and the display part is a display of the computer. The control mechanism and the positioning mechanism 2 and the measuring mechanism 3 adopt wireless network for data transmission and communication.

[0046] The construction system for laying seabed pipeline provided by the embodiment is provided with a pipelaying vessel 1, and a positioning mechanism 2, a measuring mechanism 3 and a control mechanism are arranged on the pipelaying vessel 1, the theoretical track lines of the monitoring points can be calculated by the control mechanism according to the parameters of the monitoring points and the arc route before the pipelaying operation, and the theoretical track lines of different monitoring points are different; during the pipelaying operation, the actual positions of the monitoring points and the heading of the pipelaying vessel 1 are monitored in real time by the positioning mechanism 2 and the measuring mechanism 3 and are sent to the control mechanism, the positional relationship between the actual positions of the monitoring points and the theoretical track lines is solved by the control mechanism, the deviation between the actual positions and the theoretical track lines is calculated, and a pre-warning is made when the deviation exceeds a predetermined value, so that the pipelaying vessel 1 can lay the seabed pipeline along the optimal path on the arc segment route.

[0047] Furthermore, in the description of the present specification, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0048] All articles and references, including patent applications and publications, disclosed in the present description are incorporated herein by reference for all purposes. The term "consisting essentially of to describe combinations shall include elements, ingredients, components or steps that do not materially affect the basic and novel characteristics of the combination. The use of the term "comprising" or "including" to describe combinations of elements, ingredients, components or steps herein also is taken to mean that other elements, ingredients, components or steps can be present in addition to those specifically recited, unless stated otherwise. Throughout this description, use of the term "may" in the context "may" include is intended to mean that a described property, condition, event or circumstance can or can not occur or exist.

[0049] Multiple elements, ingredients, components or steps can be provided by a single integrated element, ingredient, component or step. Alternatively, a single integrated element, ingredient, component or step might be divided into separate multiple elements, ingredients, components or steps. To the extent that a disclosure of multiple elements, ingredients, components or steps is presented in this description as "comprising" or "including" one or more of the recited elements, ingredients, components or steps, it is understood that all combinations of the recited elements, ingredients, components or steps are specifically contemplated.

[0050] It is understood that the above description is intended to be illustrative and not restrictive. Many embodiments and many applications besides the examples provided herein will be apparent to those of skill in the art upon reading the above description. The scope of the teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated by reference for all purposes. The omission of any aspect of the subject matter disclosed herein does not preclude coverage of that aspect, nor does it relinquish any right to use such subject matter under the teachings of the present disclosure.

Claims

1. A construction system for laying submarine pipelines, characterized in that, include: A pipelaying vessel used for laying subsea pipelines is equipped with multiple monitoring points located at different positions on the vessel; the number of monitoring points is at least three; the designed route of the subsea pipeline is an arc route, the parameters of which include the center, radius, start point, and end point; the pipelaying vessel is equipped with a pipe for laying, a support frame for carrying the pipe, and a track; one end of the support frame is fixedly connected to the pipelaying vessel and to the track, and the other end extends outside the pipelaying vessel; the pipe located on the pipelaying vessel is disposed within the track, which is used to transport the pipe to the support frame; A positioning mechanism fixedly installed on the pipelaying vessel is used to monitor the actual positions of multiple monitoring points; A measuring mechanism is arranged adjacent to the positioning mechanism for measuring the heading of the pipelaying vessel; the measuring mechanism is fixedly mounted on the pipelaying vessel. A control mechanism is connected to the positioning mechanism and the measuring mechanism respectively, and the control mechanism is fixedly installed on the pipelaying vessel.

2. The construction system for laying submarine pipelines according to claim 1, characterized in that, The number of monitoring points is 3.

3. The construction system for laying submarine pipelines according to claim 2, characterized in that, The monitoring points include mud contact points, which are the locations where the pipe contacts the seabed during pipelaying by the pipelaying vessel.

4. The construction system for laying submarine pipelines according to claim 3, characterized in that, The monitoring point also includes the end point of the pipelaying rack, which is the end of the pipelaying rack that is furthest from the pipelaying vessel.

5. The construction system for laying submarine pipelines according to claim 4, characterized in that, The monitoring points also include pipeline welding points.

6. The construction system for laying submarine pipelines according to claim 1, characterized in that, The positioning mechanism includes a GNSS positioning device.

7. The construction system for laying submarine pipelines according to claim 1, characterized in that, The measuring mechanism includes a compass.

8. The construction system for laying submarine pipelines according to claim 1, characterized in that, The control mechanism is equipped with a display unit for displaying the deviation between the actual position and the theoretical trajectory.

9. The construction system for laying submarine pipelines according to claim 8, characterized in that, The control mechanism includes a computer, and the display unit is the computer's monitor.

10. The construction system for laying submarine pipelines according to claim 1, characterized in that, The control mechanism, positioning mechanism, and measuring mechanism communicate and transmit data via a wireless network.

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