Electronic system, method, and program for controlling a variable-configuration lay ramp of a pipeline laying vessel, to lay a pipeline on the bed of a body of water

Patent metadata

Field	Value
Publication number	US-9506580-B2
Application number	US-201314374182-A
Country	US
Kind code	B2
Filing date	Jan 28, 2013
Priority date	Jan 27, 2012
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

An electronic control system configured to control a variable-configuration lay ramp of a pipeline laying vessel, to lay a pipeline on the bed of a body of water, is configured to: acquire data including data related to the configuration of the lay ramp, data related to the laying vessel, and data related to the forces transmitted by the lay ramp and the laying vessel to the pipeline; generate a plurality of step sequences to change the configuration of the lay ramp from a first to a second work configuration; and select a best step sequence as a function of the plurality of step sequences and the acquired data, so as to minimize the stress induced in the pipeline at each intermediate configuration between the first and second work configuration.

First claim

The invention is claimed as follows:

1. An electronic variable-configuration lay ramp control system comprising:
a processor; and
a memory device which stores a plurality of instructions, which when executed by the processor, cause the processor to:
acquire data related to a positional configuration of a lay ramp of a pipeline laying vessel, the acquired data related to the pipeline laying vessel and the acquired data related to an amount of stress induced in a pipeline being laid on a bed of a body of water,
generate a plurality of steps sequences to change the positional configuration of the lay ramp relative to the pipeline laying vessel from a first work configuration to a second, different work configuration,
select a designated steps sequence from the generated plurality of steps sequences, said selection being based on the acquired data to minimize the amount of stress induced in the pipeline at each intermediate configuration between the first work configuration and the second, different work configuration, and
transmit a plurality of commands to the lay ramp, the transmitted plurality of commands cause the lay ramp to implement at least one step in the designated steps sequence.

2. The electronic variable-configuration lay ramp control system of claim 1 , wherein when executed by the processor, the plurality of instructions cause the processor to:
assign estimated values to each step in the designated steps sequence, the estimated values related to the intermediate configuration of the lay ramp,
acquire data related to the configuration of the lay ramp in the intermediate configuration, and
compare the estimated values with the acquired data.

3. The electronic variable-configuration lay ramp control system of claim 2 , wherein when executed by the processor when a difference between the estimated values and the acquired data related to the intermediate configuration of the lay ramp satisfies a designated acceptance criteria, the plurality of instructions cause the processor to transmit a plurality of commands to the lay ramp, said plurality of commands cause the lay ramp to implement at least another step in the designated steps sequence.

4. The electronic variable-configuration lay ramp control system of claim 2 , wherein when executed by the processor when a difference between the estimated values and the acquired data related to the intermediate configuration of the lay ramp does not satisfy a designated acceptance criteria, the plurality of instructions cause the processor to disable implementation of any additional steps in the designated steps sequence.

5. The electronic variable-configuration lay ramp control system of claim 4 , wherein when executed by the processor, the plurality of instructions cause the processor to:
generate another plurality of steps sequences to change the configuration of the lay ramp from an initial intermediate configuration to the second, different work configuration, and
select another designated steps sequence from the generated other plurality of steps sequences, said selection being based on the acquired data to minimize the amount of stress induced in the pipeline at each intermediate configuration between the initial intermediate configuration and the second, different work configuration.

6. The electronic variable-configuration lay ramp control system of claim 1 , wherein when executed by the processor, the plurality of instructions cause the processor to:
select the designated steps sequence based on genetic algorithms, and
construct a fitness function related to the amount of stress induced in the pipeline.

7. The electronic variable-configuration lay ramp control system of claim 1 , wherein when executed by the processor, the plurality of instructions cause the processor to acquire a plurality of forces transmitted by the pipeline laying vessel and the lay ramp to the pipeline.

8. The electronic variable-configuration lay ramp control system of claim 7 , wherein when executed by the processor, the plurality of instructions cause the processor to calculate the amount of stress induced in the pipeline.

9. The electronic variable-configuration lay ramp control system of claim 1 , wherein when executed by the processor, the plurality of instructions cause the processor to calculate the configuration of the pipeline between the pipeline laying vessel and the bed of the body of water.

10. The electronic variable-configuration lay ramp control system of claim 1 , which is associated with:
a centralized monitoring system configured to acquire, monitor, and memorize detectable data related to the lay ramp and the pipeline laying vessel, and
a pipe-laying guidance system connected to the centralized monitoring system and configured to real-time monitor the amount of stress induced in the pipeline.

11. The electronic variable-configuration lay ramp control system of claim 10 , which is associated with:
a lay ramp management system including:
a computer planner configured to implement an optimization program to determine the designated steps sequence, and
a computer scheduler configured to implement and check the steps.

12. The electronic variable-configuration lay ramp control system of claim 1 , wherein when executed by the processor, the plurality of instructions cause the processor to:
generate a first plurality of steps sequences with a first designated step,
generate a second plurality of steps sequences with a second designated step, the first designated step being greater than the second designated step,
change the configuration of the lay ramp from the first configuration to the second, different work configuration,
select a first designated steps sequence from the generated first plurality of steps sequences, said selection being based on the acquired data to minimize the amount of stress induced in the pipeline at each intermediate configuration between the first work configuration and the second, different work configuration, and
select a second designated steps sequence from the generated second plurality of steps sequences, said selection being based on the acquired data to minimize the amount of stress induced in the pipeline at each intermediate configuration between the first work configuration and the second, different work configuration.

13. The electronic variable-configuration lay ramp control system of claim 1 , wherein the designated steps sequence includes an optimal steps sequence.

14. A pipeline laying vessel comprising:
a lay ramp; and
an electronic variable-configuration lay ramp control system configured to:
acquire data related to a positional configuration of the lay ramp, the acquired data related to an amount of stress induced in a pipeline being laid on a bed of a body of water,
generate a plurality of steps sequences to change the positional configuration of the lay ramp relative to the bed of the body of water from a first work configuration to a second, different work configuration,
select a designated steps sequence from the generated plurality of steps sequences, said selection being based on the acquired data to minimize the amount of stress induced in the pipeline at each intermediate configuration between the first work configuration and the second, different work configuration, and
transmit a plurality of commands to the lay ramp, the transmitted plurality of commands cause the lay ramp to implement at least one step in the designated steps sequence.

15. A pipeline laying vessel variable-configuration lay ramp comprising:
a plurality of interconnected, adjustable-tilt segments;
a plurality of a

Assignees

• Saipem Spa

Inventors

• Bianchi Stefano
• Gaggiotti Federico
• Formentini Federico
• Sovilla Stefano
• Bruschi Roberto
• Lazzarin Diego

Classifications

• F16L1/225 Primary

  Stingers · CPC title

• F16L1/205

  Pipe-laying ships (F16L1/225, F16L1/23 and F16L1/235 take precedence) · CPC title

• F16L1/207

  Pipe handling apparatus · CPC title

• F16L1/235

  Apparatus for controlling the pipe during laying · CPC title

• G05B15/02

  electric · CPC title