CN112800570A

CN112800570A - Method and device for determining pipeline failure consequence and storage medium

Info

Publication number: CN112800570A
Application number: CN201911111858.4A
Authority: CN
Inventors: 崔鹏; 邹晓燕; 王树好; 王建伟; 易博
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2021-05-14
Anticipated expiration: 2039-11-14
Also published as: CN112800570B

Abstract

The application discloses a method and a device for determining a pipeline failure consequence and a storage medium, and belongs to the technical field of oil and gas pipelines. The method comprises the following steps: acquiring a pipeline parameter of a target pipeline, wherein the target pipeline is any one of a plurality of pipelines to be evaluated; determining a safety impact level, an environmental impact level and a production impact level of the target pipeline based on the pipeline parameters; and multiplying the power of the safety influence level, the power of the environment influence level and the power of the production influence level to obtain the failure consequence of the target pipeline. In the method and the device, when the failure consequence of the target pipeline is determined, the influence of the pipeline failure on safety, environment and production is expressed in a product form, and meanwhile, each influence weight is reflected on the index, so that the interactive influence of the pipeline failure consequence is more met, and the accuracy of determining the failure consequence is ensured.

Description

Method and device for determining pipeline failure consequence and storage medium

Technical Field

The application relates to the technical field of oil and gas pipelines, in particular to a method for determining a pipeline failure consequence.

Background

The pipeline risk is a comprehensive measure of the possibility of an accident and the severity of the consequences caused by the accident, and the evaluation of the pipeline risk can enable pipeline managers to comprehensively master the pipeline risk. The pipe risk is equal to the product of the pipe failure probability and the severity of the failure outcome. Therefore, in order to perform a pipe risk assessment, the pipe failure consequences need to be determined.

However, the existing method for determining the pipeline failure consequence has incomplete consideration factors, so that the determined pipeline failure consequence is inaccurate.

Disclosure of Invention

The application provides a method and a device for determining a pipeline failure consequence and a storage medium, which can solve the problem of inaccurate determination of the pipeline failure consequence in the related art. The technical scheme is as follows:

in one aspect, a method for determining a pipeline failure consequence is provided, the method comprising:

acquiring a pipeline parameter of a target pipeline, wherein the target pipeline is any one of a plurality of pipelines to be evaluated;

determining a safety impact level, an environmental impact level and a production impact level of the target pipeline based on the pipeline parameters;

and multiplying the power of the safety influence level, the power of the environment influence level and the power of the production influence level to obtain the failure consequence of the target pipeline.

In some embodiments, the pipeline parameter includes at least one of a transport medium, a laying pattern, a type of buried ground, a pipeline specification, a pipeline type, a pipeline throughput, and a pipeline pressure of the target pipeline;

determining a safety impact level, an environmental impact level, and a production impact level of the target pipeline based on the pipeline parameters includes:

determining the safety level and the environment level of the target pipeline from the corresponding relation among the conveying medium, the safety level and the environment level based on the conveying medium of the target pipeline;

determining a first safety influence factor and a first environment influence factor of the target pipeline from the corresponding relation among the laying mode, the first safety influence factor and the first environment influence factor based on the laying mode of the target pipeline;

determining a second safety influence factor and a second environmental influence factor of the target pipeline from the corresponding relationship among the buried ground class, the second safety influence factor and the second environmental influence factor based on the buried ground class of the target pipeline;

determining a first production impact level of the target pipeline from a correspondence between pipeline specifications and/or pipeline output and/or pipeline pressure and the first production impact level based on the pipeline specifications and/or pipeline output and/or pipeline pressure of the target pipeline;

determining a second production impact level of the target pipeline from a corresponding relationship between the pipeline type and a second production safety level based on the pipeline type of the target pipeline;

determining the security impact level based on the security level, a first security impact factor, and a second security impact factor;

determining the environmental impact level based on the environmental level, the first environmental impact factor, and the second environmental impact factor;

and multiplying the first production influence grade and the second production influence grade to obtain the production influence grade.

In some embodiments, said multiplying said power of said safety impact level, said power of said environmental impact level, and said power of said production impact level to obtain said target pipe's failure consequence comprises:

determining a first weight corresponding to the safety influence level, a second weight corresponding to the environment influence level and a third weight corresponding to the production influence level;

determining a first power of weight of the security impact level, a second power of weight of the environmental impact level, and a third power of weight of the production impact level;

and multiplying the first power of the weight of the safety influence level, the second power of the weight of the environment influence level and the third power of the weight of the production influence level to obtain the failure consequence of the target pipeline.

In some embodiments, after multiplying the power of the safety impact level, the power of the environmental impact level, and the power of the production impact level to obtain the failure consequence of the target pipeline, the method further comprises:

comparing the failure consequence of the target pipeline with a failure consequence range;

and determining the severity of the failure consequence of the target pipeline from the corresponding relation between the failure consequence range and the severity according to the failure consequence range where the failure consequence is located so as to evaluate the failure consequence of the target pipeline.

sequencing the failure consequences of the plurality of pipelines to obtain a sequencing result of the plurality of failure consequences;

determining the sequencing position of the failure consequence of the target pipeline in the sequencing result;

and determining the severity of the failure consequence of the target pipeline according to the sequencing position so as to evaluate the failure consequence of the target pipeline.

In another aspect, there is provided a pipe failure consequence determination apparatus, the apparatus comprising:

the system comprises an acquisition module, a judgment module and a judgment module, wherein the acquisition module is used for acquiring the pipeline parameters of a target pipeline, and the target pipeline is any one of a plurality of pipelines to be evaluated;

a first determination module for determining a safety impact level, an environmental impact level and a production impact level of the target pipeline based on the pipeline parameters;

and the computing module is used for multiplying the power of the safety influence level, the power of the environment influence level and the power of the production influence level to obtain the failure result of the target pipeline.

the first determining module includes:

the first determining submodule is used for determining the safety level and the environment level of the target pipeline from the corresponding relation among the conveying medium, the safety level and the environment level based on the conveying medium of the target pipeline;

the second determining submodule is used for determining a first safety influence factor and a first environment influence factor of the target pipeline from the corresponding relation among the laying mode, the first safety influence factor and the first environment influence factor based on the laying mode of the target pipeline;

the third determining submodule is used for determining a second safety influence factor and a second environment influence factor of the target pipeline from the corresponding relation among the buried ground type, the second safety influence factor and the second environment influence factor based on the buried ground type of the target pipeline;

a fourth determining submodule, configured to determine a first production impact level of the target pipeline from a correspondence between a pipeline specification and/or a pipeline output and/or a pipeline pressure and the first production impact level, based on the pipeline specification and/or the pipeline output and/or the pipeline pressure of the target pipeline;

a fifth determining submodule, configured to determine, based on the pipeline category of the target pipeline, a second production impact level of the target pipeline from a correspondence between the pipeline category and a second production safety level;

a sixth determining submodule, configured to determine the security impact level based on the security level, the first security impact factor, and the second security impact factor;

a seventh determining submodule for determining the environmental impact level based on the environmental level, the first environmental impact factor and the second environmental impact factor;

and the calculation submodule is used for multiplying the first production influence level and the second production influence level to obtain the production influence level.

In some embodiments, the computing module is to:

In some embodiments, the apparatus further comprises:

the comparison module is used for comparing the failure consequence of the target pipeline with the failure consequence range;

and the second determining module is used for determining the severity of the failure consequence of the target pipeline from the corresponding relation between the failure consequence range and the severity according to the failure consequence range where the failure consequence is located so as to evaluate the failure consequence of the target pipeline.

In some embodiments, the apparatus further comprises:

the sequencing module is used for sequencing the failure consequences of the pipelines to obtain a sequencing result of the failure consequences;

the third determining module is used for determining the sequencing position of the failure consequence of the target pipeline in the sequencing result;

and the fourth determining module is used for determining the severity of the failure consequence of the target pipeline according to the sequencing position so as to evaluate the failure consequence of the target pipeline.

In another aspect, a terminal is provided, where the terminal includes a memory for storing a computer program and a processor for executing the computer program stored in the memory to implement the steps of the method for determining the consequences of a pipeline failure.

In another aspect, a computer-readable storage medium is provided, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for determining the consequences of a failure of a pipeline as described above.

In another aspect, a computer program product is provided comprising instructions which, when run on a computer, cause the computer to perform the steps of the pipe failure consequence determination method described above.

The technical scheme provided by the application can at least bring the following beneficial effects:

according to the method and the device, the pipeline parameters of the target pipeline can be obtained, and the failure consequence of the target pipeline is determined according to the safety influence level, the environment influence level and the production influence level of the target pipeline, which are determined by the pipeline parameters. When the failure consequence of the target pipeline is determined, the influence of the pipeline failure on safety, environment and production is expressed in a product form, and meanwhile, each influence weight is reflected on the index, so that the interactive influence of the pipeline failure consequence is more met, and the accuracy of determining the failure consequence is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of an implementation environment provided by an embodiment of the present application;

FIG. 2 is a flow chart of a method for determining the consequences of a pipeline failure according to an embodiment of the present application;

FIG. 3 is a flow chart of another method for determining the consequences of a pipeline failure provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a device for determining the consequences of a pipeline failure according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first determining module provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of another pipeline failure consequence determining device provided by the embodiment of the application;

FIG. 7 is a schematic structural diagram of another pipeline failure consequence determining device provided by the embodiment of the application;

fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Before explaining the method for determining the pipeline failure consequence provided by the embodiment of the present application in detail, an application scenario and an implementation environment provided by the embodiment of the present application are introduced.

First, an application scenario related to the embodiment of the present application is described.

The pipeline risk evaluation is a core link of pipeline integrity management and is an important means for pipeline managers to comprehensively master pipeline risks. The pipeline risk is a composite measure of the likelihood of an accident occurring and the severity of the consequences of the accident, which is equal to the product of the probability of a pipeline failure and the severity of the consequences of the failure. Therefore, implementing a risk assessment requires an accurate determination of the consequences of a pipeline failure.

However, the existing pipeline failure consequence determination method mainly aims at oil and gas long-distance transmission pipelines and is not suitable for determining the failure consequence of oil and gas field gathering and transmission pipelines. Firstly, the existing method for determining the consequence of pipeline failure does not cover the influence of pipeline failure on the production of an enterprise. Once a pipeline fails, the pipeline not only can cause personal casualties and environmental pollution, but also can cause the pressure production and the production stop of an oil well, and can also cause the shutdown of a combined station or a transfer station in serious cases, thereby bringing greater impact to the normal production of an oil and gas field; secondly, the index evaluation items covered by the existing pipeline failure consequence determination method adopt an equal weight configuration method, and the severity of the failure consequence cannot be represented. The oil and gas field pipeline generally has the effects of safety, environmental protection and production after failure, the influence degrees of the pipeline on the three indexes after failure are different, and the adoption of an equal weight configuration method is unreasonable; thirdly, index evaluation items covered by the existing pipeline failure consequence determination method cannot meet the evaluation requirements of oil and gas fields. The oil-gas field gathering and transportation pipeline is divided into an oil-gas-water mixed transportation pipeline, a water-containing oil pipeline, a purified oil pipeline, a water injection/polymer injection pipeline, a natural gas pipeline and the like according to a transportation medium, the pipeline transportation medium is various, and the existing index evaluation item is not completely covered.

Based on the application scene, the pipeline failure consequence determining method is suitable for oil and gas field gathering and transportation pipelines and improves accuracy of determining pipeline failure consequences.

Next, an implementation environment related to the embodiments of the present application will be described.

Referring to FIG. 1, FIG. 1 is a schematic diagram illustrating an implementation environment in accordance with an example embodiment. The implementation environment includes at least one terminal 101 and/or server 102, and the terminal 101 may be communicatively coupled to the server 102. The communication connection may be a wired or wireless connection, which is not limited in this application.

The terminal 101 may be any electronic product capable of performing human-Computer interaction with a user through one or more modes such as a keyboard, a touch pad, a touch screen, a remote controller, voice interaction, or handwriting equipment, for example, a PC (Personal Computer), a mobile phone, a smart phone, a PDA (Personal Digital Assistant), a wearable device, a pocket PC (pocket PC), a tablet Computer, a smart car, a smart television, a smart sound box, and the like.

The server 102 may be a server, a server cluster composed of a plurality of servers, or a cloud computing service center.

Those skilled in the art will appreciate that the terminal 101 and the server 102 are only examples, and other existing or future terminals or servers may be suitable for the application, and are included within the scope of the present application and are incorporated by reference herein.

The method for determining the consequences of pipeline failure provided by the embodiments of the present application will be explained in detail with reference to the accompanying drawings.

Fig. 2 is a flowchart of a method for determining a pipeline failure consequence, which is applied to a terminal according to an embodiment of the present application. Referring to fig. 2, the method includes the following steps.

Step 201: the method comprises the steps of obtaining pipeline parameters of a target pipeline, wherein the target pipeline is any one of a plurality of pipelines to be evaluated.

Step 202: a safety impact level, an environmental impact level, and a production impact level of the target pipeline are determined based on the pipeline parameters.

Step 203: and multiplying the power of the safety influence level, the power of the environment influence level and the power of the production influence level to obtain the failure consequence of the target pipeline.

this safety impact level, environmental impact level and production impact level of confirming this target pipeline based on this pipeline parameter include:

determining a first production impact level of the target pipeline from a correspondence between the pipeline specification and/or pipeline output and/or pipeline pressure and the first production impact level based on the pipeline specification and/or pipeline output and/or pipeline pressure of the target pipeline;

determining a second production impact level of the target pipeline from the corresponding relationship between the pipeline type and the second production safety level based on the pipeline type of the target pipeline;

determining the security impact level based on the security level, the first security impact factor, and the second security impact factor;

multiplying the first production impact level by the second production impact level to obtain the production impact level.

In some embodiments, multiplying the power of the safety impact level, the power of the environmental impact level, and the power of the production impact level to obtain the failure consequence of the target pipeline comprises:

comparing the failure consequence of the target pipeline with the failure consequence range;

and determining the severity of the failure consequence of the target pipeline from the corresponding relation between the failure consequence range and the severity according to the failure consequence range where the failure consequence is located, so as to evaluate the failure consequence of the target pipeline.

All the above optional technical solutions can be combined arbitrarily to form an optional embodiment of the present application, and the present application embodiment is not described in detail again.

Fig. 3 is a flowchart of a method for determining a pipeline failure consequence according to an embodiment of the present application, and referring to fig. 3, the method includes the following steps.

Step 301: the terminal acquires the pipeline parameters of a target pipeline, wherein the target pipeline is any one of a plurality of pipelines to be evaluated.

In general, in order to know the conditions of each pipeline, some data acquisition devices are usually set to acquire the pipeline parameters of each pipeline, and the consequences of the pipelines with different pipeline parameters after failure may be different, so that in order to determine the failure consequences of each pipeline after failure, a terminal needs to acquire the pipeline parameters of a target pipeline.

As an example, since a data acquisition device that acquires the pipe parameters may be provided, and the pipe of the acquired target pipe may be recorded in the data acquisition device. Therefore, the terminal can acquire the pipeline parameters of the target pipeline from the data acquisition devices. The data acquisition equipment may send the acquired pipeline parameters to the server and/or the terminal after acquiring the pipeline parameters of each pipeline, so that the terminal may acquire the corresponding pipeline parameters from the local storage space according to the identifier of the target pipeline, or acquire the corresponding pipeline parameters from the server according to the identifier of the target pipeline.

The pipeline parameter includes at least one of a transport medium, a laying method, a kind of buried ground, a pipeline specification, a pipeline type, a pipeline transport amount, a pipeline pressure, and the like of a target pipeline. The transport medium may include oil and gas water, aqueous oil, purified oil, natural gas, produced water, polymer solutions, clean water, and the like. The laying means may include crossing highways, crossing railways, crossing bridges, trusses, or by-or through sea areas, by-or through rivers, by-or through salt fields, brine ponds, shrimp ponds, by-or through drainage channels, underground, and the like. Buried ground may include urban residential and/or residential areas, villages, national and/or highway roadsides, natural conservation areas and/or ecological areas, sea and/or river, salt and/or brine and/or shrimp ponds, drainage canals, cultivated and/or woodland, wasteland, and the like. The pipe specifications may include different pipe inside diameters, etc. Pipeline categories may include oil and gas export pipelines, terminal-to-terminal and/or terminal-to-gas treatment stations, transfer stations-to-terminal and/or terminal-to-transfer stations, gathering mains (oil, gas, water), single well pipelines (oil, gas, water), water supply branches, and so forth.

For example, the parameters of the target pipeline acquired by the terminal may include that the transport medium is low-water crude oil, the laying mode is buried laying, the buried type is to pass through a village and/or a cultivated land along the way, the pipeline specification is 205mm (millimeter) of the inner diameter of the pipeline, and the pipeline type is from a transfer station to a combined station.

As an example, the terminal may obtain the pipe parameters of the target pipe when receiving the parameter obtaining instruction. The parameter acquisition instruction can be automatically triggered every first preset time, and/or triggered by appointed operation acting on the terminal when a worker needs to know the result of the pipeline failure.

It should be noted that the first preset time period may be set in advance according to requirements, for example, the first preset time period may be 1 day, 3 days, 7 days, and so on. The specified operation may be a click operation, a slide operation, a long press operation, a voice operation, or the like.

Step 302: and the terminal determines the safety influence level, the environment influence level and the production influence level of the target pipeline based on the pipeline parameters.

After the pipeline fails, the consequences caused by the pipelines with different parameters are different, the different pipeline parameters have different influences on the pipeline failure consequences, and the pipeline failure can affect the safety aspect, the environmental aspect and the production aspect. Thus, the terminal may determine the safety impact level, the environmental impact level, and the production impact level of the target pipeline based on the pipeline parameters.

As an example, the operation of the terminal determining the safety impact level, the environmental impact level and the production impact level of the target pipeline based on the pipeline parameters may be: determining the safety level and the environment level of the target pipeline from the corresponding relation among the conveying medium, the safety level and the environment level based on the conveying medium of the target pipeline; determining a first safety influence factor and a first environment influence factor of the target pipeline from the corresponding relation among the laying mode, the first safety influence factor and the first environment influence factor based on the laying mode of the target pipeline; determining a second safety influence factor and a second environment influence factor of the target pipeline from the corresponding relationship among the buried ground class, the second safety influence factor and the second environment influence factor based on the buried ground class of the target pipeline; determining a first production impact level of the target pipeline from a corresponding relationship between the pipeline specification and/or the pipeline output and/or the pipeline pressure and the first production impact level based on the pipeline specification and/or the pipeline output and/or the pipeline pressure of the target pipeline; determining a second production impact level of the target pipeline from the corresponding relationship between the pipeline type and the second production safety level based on the pipeline type of the target pipeline; determining a security impact level based on the security level, the first security impact factor and the second security impact factor; determining an environmental impact level based on the environmental level, the first environmental impact factor and the second environmental impact factor; and multiplying the first production influence grade and the second production influence grade to obtain the production influence grade.

Because the conveying medium can affect two aspects of safety and environment, and different consequence levels possibly caused by safety and environment are caused after the target pipeline fails, the safety level and the environment level of the target pipeline can be determined from the corresponding relation among the conveying medium, the safety level and the environment level based on the conveying medium of the target pipeline.

It should be noted that, the correspondence between the conveying medium, the safety level, and the environmental level may be set in advance, the safety level and the environmental level may be represented by numerical values, and the larger the numerical value is, the larger the influence degree is. The numerical ranges of the security level and the environment level may be set in advance, for example, the numerical range of the security level may be 1 to 5, the numerical range of the environment level may be 1 to 5, and so on.

As an example, since the transportation medium may include natural gas, produced water (polymer solution), and the like, not only the transportation medium itself may affect the safety level and the environmental level, but also the magnitude of the operating pressure of the transportation medium, different safety levels and environmental levels may be set for different operating pressures in the correspondence relationship between the transportation medium, the safety level, and the environmental level.

For example, when the transmission medium of the target pipeline acquired by the terminal is low-water crude oil, the terminal may determine that the safety level of the target pipeline is 3 and the environmental level is 4 from the correspondence among the transmission medium, the safety level and the environmental level shown in table 1 below.

TABLE 1

As aiming at different landforms, the pipeline can adopt different laying modes such as crossing, burying and the like. When the target pipeline has a failure event, the additional influence results generated by different laying modes are different. The laying mode can affect the safety and the environment, and different consequences possibly caused to the safety and the environment can be caused after the target pipeline fails, so that the first safety influence factor and the first environment influence factor of the target pipeline can be determined from the corresponding relation among the laying mode, the first safety influence factor and the first environment influence factor based on the laying mode of the target pipeline.

It should be noted that, the laying mode, the correspondence between the first safety factor and the first environmental factor may be set in advance, the first safety factor and the first environmental factor may be represented by numerical values, and the larger the numerical value is, the larger the influence degree is. The first safety factor and the first environmental factor may be preset, for example, the first safety factor may have a value ranging from 1 to 5, the first environmental factor may have a value ranging from 1 to 5, and so on.

For example, when the laying mode of the target pipeline is buried, the terminal may determine that the first safety influence factor of the target pipeline is 1 and the first environment influence factor is 1 from the corresponding relationship among the laying mode, the first safety influence factor and the first environment influence factor shown in table 2 below.

TABLE 2

	Laying method	First safety factor	First environmental impact factor
				1	Road crossing	4	1
2	Railway crossing	5	1
				3	Bridge and truss	3	1
4	Is imminent or passing through sea area	2	5
				5	By being endangered or crossing a river	2	4
6	Salt field, bittern pool and shrimp pool	2	3
				7	By lying or passing through drainage channel	2	2
8	Buried, other	1	1

As an example, when the target pipeline has multiple laying modes, the terminal may determine the first safety impact factor and/or the first environmental impact factor with the highest value as the first safety impact factor and the first environmental impact factor of the target pipeline.

Due to different areas for burying the pipelines, the influence results are different after the pipelines are invalid. When the target pipe fails, the buried ground of the target pipe may have an influence on safety and environment. Therefore, the terminal may determine the second safety impact factor and the second environmental impact factor of the target pipeline from the corresponding relationship among the buried ground class, the second safety impact factor and the second environmental impact factor based on the buried ground class of the target pipeline.

It should be noted that the correspondence between the buried land type and the second safety factor and the second environmental factor may be set in advance, the second safety factor and the second environmental factor may be represented by numerical values, and the larger the numerical value is, the larger the influence degree is. The value ranges of the second safety factor and the second environmental factor may be set in advance, for example, the value range of the second safety factor is 1-5, the value range of the second environmental factor is 1-5, and so on.

For example, when the buried ground of the target pipeline passes through a village or a cultivated land along the way, the terminal may determine that the second safety factor of the target pipeline is 4 and the second environmental factor is 3 from the correspondence among the buried ground, the second safety factor, and the second environmental factor shown in table 3 below.

TABLE 3

	Buried ground	Second safety factor	Second environmental factor
				1	Urban residential area and building area	5	4
2	Village	4	3
				3	Roadside of national road and highway	3	2
4	Natural conservation area and ecological area	1	5
				5	Sea area and river	1	5
6	Salt pan, bittern pool and shrimp pool	1	3
				7	Drainage canal	1	2
8	Cultivated land, forest land	2	2
				9	Wasteland	1	1

As an example, when the target pipeline has multiple buried ground classes, the terminal may determine the second safety impact factor and/or the second environmental impact factor with the highest value as the second safety impact factor and the second environmental impact factor of the target pipeline.

The pipeline can cause the oil well to be pressed and stopped once a failure event occurs, and can also cause the shutdown of the united station or the transfer station in serious cases, thereby bringing great impact to the normal production of the oil and gas field. Therefore, the influence degree of different pipelines after failure on the production of the enterprise can be respectively evaluated through the pipeline specification, the pipeline output and/or the pipeline pressure and the pipeline type. Accordingly, the terminal may determine a first production impact level of the target pipeline from the correspondence between the pipeline specification and/or pipeline throughput and/or pipeline pressure and the first production impact level based on the pipeline specification and/or pipeline throughput and/or pipeline pressure of the target pipeline, and determine a second production impact level of the target pipeline from the correspondence between the pipeline category and the second production safety level based on the pipeline category of the target pipeline.

It should be noted that, the corresponding relationship between the pipeline specification and/or the pipeline output and/or the pipeline pressure and the first production impact level, and the corresponding relationship between the pipeline type and the second production safety level may be set in advance, the first production impact level and the second production impact level may be represented by numerical values, and the larger the numerical value is, the larger the impact degree is. The first production impact level and the second production impact level may be set in advance, for example, the numerical range of the first production impact level may be 1-5, the numerical range of the second production impact level may be 1-5, and so on.

For example, when the pipeline specification of the target pipeline is 205mm, and the pipeline type is from the transfer station to the joining station, the terminal may determine that the first production impact level of the target pipeline is 4 from the correspondence between the pipeline specification and/or the pipeline output and/or the pipeline pressure and the first production impact level as shown in table 4 below, and determine that the second production impact level of the target pipeline is 3 from the correspondence between the pipeline type and the second production safety level as shown in table 5 below.

TABLE 4

	Inner diameter of pipeline	First productionImpact grade
			1	Over 400mm	5
2	200-400mm	4
			3	100-200mm	3
4	60-100mm	2
			5	Less than 60mm	1

TABLE 5

	Pipe classification	Second production impact grade
			1	Oil gas outward transport pipeline	5
2	Combined station to combined station, combined station to natural gas treatment station	4
			3	Transfer station to joint station, transfer station to transfer station	3
4	Gathering main line (gathering oil, gas, water injection, water supply)	2
			5	Single well pipeline (collecting oil, collecting gas, injecting water) and water supply branch line	1

It should be noted that the correspondence relationships shown in tables 1 to 5 are exemplary descriptions in the embodiments of the present application, and are not limited to the embodiments of the present application.

As an example, the terminal may determine the security impact level based on the security level, the first security impact factor, and the second security impact factor by: adding or multiplying the security level, the first security influence factor and the second security influence factor to obtain a security influence level; alternatively, the security impact level is determined by a first formula below based on the security level, the first security impact factor, and the second security impact factor.

CoF₁＝S*(S₁+S₂) (1)

In the first formula (1), CoF₁For the safety impact level, S is the safety level, S₁Is a first safety factor, S₂Is the second safety impact factor.

For example, when the security level is 3, the first security impact factor is 1, and the second security impact factor is 4, the security impact level can be determined to be 15 by the second formula.

As an example, the terminal may determine the environmental impact level based on the environmental level, the first environmental impact factor and the second environmental impact factor by: adding or multiplying the environment grade, the first environment influence factor and the second environment influence factor to obtain an environment influence grade; alternatively, the environmental impact level is determined by a third formula described below based on the environmental level, the first environmental impact factor, and the second environmental impact factor.

CoF₂＝E*(E₁+E₂) (2)

In the second formula (2), CoF₂For environmental impact rating, E for environmental rating, E₁Is a first environmental influence factor, E₂Is the second environmental impact factor.

Step 303: and the terminal multiplies the power of the safety influence level, the power of the environment influence level and the power of the production influence level to obtain the failure consequence of the target pipeline.

After the pipeline fails, the safety aspect, the environment aspect and the production aspect can be affected, so that the terminal can determine the failure consequence of the target pipeline based on the safety influence level, the environment influence level and the production influence level, for example, the terminal can multiply the power of the safety influence level, the power of the environment influence level and the power of the production influence level to obtain the failure consequence of the target pipeline.

As an example, the terminal multiplies the power of the safety impact level, the power of the environmental impact level, and the power of the production impact level to obtain the failure consequence of the target pipeline may be: determining a first weight corresponding to the safety influence level, a second weight corresponding to the environment influence level and a third weight corresponding to the production influence level; determining a first power of a weight of a security impact level, a second power of a weight of an environmental impact level, and a third power of a weight of a production impact level; and multiplying the first weight power of the safety influence level, the second weight power of the environment influence level and the third weight power of the production influence level to obtain the failure result of the target pipeline.

To facilitate understanding of the above process, the process may be described by the following third formula in the present application.

It should be noted that, in the third formula (3), CoF is a failure consequence of the target pipeline, and CoF₁For safety impact class, CoF₂For environmental impact rating, CoF₃To produce an impact rating, w₁First weight, w, corresponding to a security impact level₂A second weight, w, corresponding to the environmental impact level₃A third weight corresponding to the production impact level.

In this embodiment, the terminal may determine the failure consequence of the target pipeline by the above method based on the security impact level, the environmental impact level, and the production impact level, and may also determine the failure consequence of the target pipeline by other methods, for example, the terminal adds the first power of the security impact level, the second power of the environmental impact level, and the third power of the production impact level to obtain the failure consequence of the target pipeline. Or the terminal adds the safety influence level, the environment influence level and the production influence level to obtain the failure result of the target pipeline; alternatively, the failure consequence of the target pipeline is determined by the following fourth formula based on the safety impact level, the environmental impact level and the production impact level.

CoF＝CoF₁*w₁+CoF₂*w₂+CoF₃*w₃ (4)

In the fourth formula (4), CoF is a failure consequence of the target pipeline, and CoF is a failure consequence of the target pipeline₁For safety impact class, CoF₂For environmental impact rating, CoF₃To produce an impact rating, w₁First weight, w, corresponding to a security impact level₂A second weight, w, corresponding to the environmental impact level₃A third weight corresponding to the production impact level.

After the pipeline fails, the influence degrees on safety, environment and production are different, so that a first weight corresponding to the safety influence level, a second weight corresponding to the environment influence level and a third weight corresponding to the production influence level can be obtained in advance.

It should be noted that the first weight corresponding to the safety influence level, the second weight corresponding to the environmental influence level, and the third weight corresponding to the production influence level may be set in advance according to requirements, for example, the first weight corresponding to the safety influence level may be 40%, the second weight corresponding to the environmental influence level may be 40%, and the third weight corresponding to the production influence level may be 20%.

Step 304: and evaluating the failure consequence of the target pipeline by the terminal.

Since the value describing the target pipeline failure can be determined through the steps 301 to 303, and the value can reflect the severity of the target pipeline failure result. Therefore, the terminal can evaluate the failure consequence of the target pipeline through the numerical value.

As an example, the operation of the terminal for evaluating the failure consequence of the target loop may be: comparing the failure consequence of the target pipeline with the failure consequence range; and determining the severity of the failure consequence of the target pipeline from the corresponding relation between the failure consequence range and the severity according to the failure consequence range where the failure consequence is located so as to evaluate the failure consequence of the target pipeline.

It should be noted that, the terminal may set the failure consequence range in advance and the severity corresponding to the failure consequence range, for example, the failure consequence range is 1 to 9, which is determined as not serious, the failure consequence range is 10 to 15, which is determined as medium serious; the range of the failure consequences is above 15, determined to be very serious, and the like. After the terminal determines the failure consequence range where the failure consequence is, the severity of the failure consequence of the target pipeline can be determined according to the corresponding relation between the failure consequence range and the severity.

As an example, the operation of the terminal for evaluating the failure consequence of the target loop may further be: sequencing the failure consequences of the pipelines to obtain a sequencing result of the failure consequences; determining the sequencing position of the failure consequence of the target pipeline in the sequencing result; and determining the severity of the failure consequence of the target pipeline according to the sequencing position so as to evaluate the failure consequence of the target pipeline.

It should be noted that the terminal may perform sorting in order from large to small or from small to large, and when determining the severity of the failure consequence of the target pipeline according to the sorting position, may determine the severity of the failure consequence of the pipeline which is arranged ahead by a first percentage (which may be set in advance) of the pipeline output as very severe in order from large to small, that is, when the first percentage is 10%, the severity of the failure consequence of the pipeline which is arranged ahead by 10% may be determined as very severe.

In the embodiment of the application, the terminal can acquire the pipeline parameters of the target pipeline, determine the safety influence level, the environment influence level and the production influence level of the target pipeline according to the pipeline parameters, give weight coefficients to safety, environment and production to determine the failure consequence of the target pipeline, and then evaluate the failure consequence of the target pipeline. When the failure consequence of the target pipeline is determined, the influence of the pipeline failure on safety, environment and production is expressed in a product form, and meanwhile, each influence weight is reflected on the index, so that the interactive influence of the pipeline failure consequence is more met, and the accuracy of determining the failure consequence is ensured.

After explaining the method for determining the pipeline failure consequence provided by the embodiment of the present application, a device for determining the pipeline failure consequence provided by the embodiment of the present application is introduced next.

Fig. 4 is a schematic structural diagram of a device for determining a result of a pipeline failure according to an embodiment of the present application, where the device for determining a result of a pipeline failure may be implemented by software, hardware, or a combination of the two, and is a part or all of a terminal, and the terminal may be the terminal shown in fig. 1. Referring to fig. 4, the apparatus includes: an acquisition module 401, a first determination module 402 and a calculation module 403.

An obtaining module 401, configured to obtain a pipeline parameter of a target pipeline, where the target pipeline is any one of multiple pipelines to be evaluated;

a first determining module 402 for determining a safety impact level, an environmental impact level and a production impact level of the target pipeline based on the pipeline parameters;

a calculating module 403, configured to multiply the power of the safety impact level, the power of the environmental impact level, and the power of the production impact level to obtain a failure result of the target pipeline.

referring to fig. 5, the first determining module 402 includes:

the first determining submodule 4021 is configured to determine, based on the transmission medium of the target pipeline, the security level and the environment level of the target pipeline from the correspondence between the transmission medium, the security level and the environment level;

the second determining submodule 4022 is configured to determine, based on the laying mode of the target pipeline, the first safety impact factor and the first environmental impact factor of the target pipeline from the corresponding relationship among the laying mode, the first safety impact factor and the first environmental impact factor;

the third determining sub-module 4023 is configured to determine, based on the buried type of the target pipeline, the second safety impact factor and the second environmental impact factor of the target pipeline from the corresponding relationship among the buried type, the second safety impact factor and the second environmental impact factor;

a fourth determining sub-module 4024, configured to determine, based on the pipeline specification and/or the pipeline output and/or the pipeline pressure of the target pipeline, a first production impact level of the target pipeline from a correspondence between the pipeline specification and/or the pipeline output and/or the pipeline pressure and the first production impact level;

a fifth determining sub-module 4025, configured to determine, based on the pipeline category of the target pipeline, a second production impact level of the target pipeline from a correspondence between the pipeline category and a second production safety level;

a sixth determining sub-module 4026, configured to determine the security impact level based on the security level, the first security impact factor, and the second security impact factor;

a seventh determining sub-module 4027, configured to determine the environmental impact level based on the environmental level, the first environmental impact factor, and the second environmental impact factor;

the calculating submodule 4028 is configured to multiply the first production impact level by the second production impact level to obtain the production impact level.

In some embodiments, the calculation module 403 is configured to:

In some embodiments, referring to fig. 6, the apparatus further comprises:

a comparison module 404, configured to compare the failure consequence of the target pipeline with a failure consequence range;

a second determining module 405, configured to determine, according to the failure consequence range where the failure consequence is located, the severity of the failure consequence of the target pipeline from the correspondence between the failure consequence range and the severity, so as to evaluate the failure consequence of the target pipeline.

In some embodiments, referring to fig. 7, the apparatus further comprises:

a sorting module 406, configured to sort the failure consequences of the multiple pipelines to obtain a sorting result of the multiple failure consequences;

a third determining module 407, configured to determine a ranking position of the failure consequence of the target pipeline in the ranking result;

a fourth determining module 408, configured to determine the severity of the failure consequence of the target pipeline according to the sorted positions, so as to evaluate the failure consequence of the target pipeline.

It should be noted that: the device for determining the result of pipeline failure provided in the above embodiment is only illustrated by the division of the above functional modules when determining the result of pipeline failure, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the pipeline failure consequence determining device and the pipeline failure consequence determining method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.

Fig. 8 is a block diagram of a terminal 800 according to an embodiment of the present disclosure. The terminal 800 may be a portable mobile terminal such as: a smartphone, a tablet, a laptop, or a desktop computer. The terminal 800 may also be referred to by other names such as user equipment, portable terminal, laptop terminal, desktop terminal, etc.

In general, the terminal 800 includes: a processor 801 and a memory 802.

The processor 801 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so forth. The processor 801 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 801 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 801 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 801 may further include an AI (Artificial Intelligence) processor for processing computing operations related to machine learning.

Memory 802 may include one or more computer-readable storage media, which may be non-transitory. Memory 802 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 802 is used to store at least one instruction for execution by processor 801 to implement the pipeline failure outcome determination method provided by method embodiments herein.

In some embodiments, the terminal 800 may further include: a peripheral interface 803 and at least one peripheral. The processor 801, memory 802 and peripheral interface 803 may be connected by bus or signal lines. Various peripheral devices may be connected to peripheral interface 803 by a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit 804, a touch screen display 805, a camera 806, an audio circuit 807, a positioning component 808, and a power supply 809.

The peripheral interface 803 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 801 and the memory 802. In some embodiments, the processor 801, memory 802, and peripheral interface 803 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 801, the memory 802, and the peripheral interface 803 may be implemented on separate chips or circuit boards, which are not limited by this embodiment.

The Radio Frequency circuit 804 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 804 communicates with communication networks and other communication devices via electromagnetic signals. The rf circuit 804 converts an electrical signal into an electromagnetic signal to be transmitted, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 804 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuit 804 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: the world wide web, metropolitan area networks, intranets, generations of mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the radio frequency circuit 804 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.

The display screen 805 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display 805 is a touch display, the display 805 also has the ability to capture touch signals on or above the surface of the display 805. The touch signal may be input to the processor 801 as a control signal for processing. At this point, the display 805 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display 805 may be one, providing the front panel of the terminal 800; in other embodiments, the display 805 may be at least two, respectively disposed on different surfaces of the terminal 800 or in a folded design; in still other embodiments, the display 805 may be a flexible display disposed on a curved surface or a folded surface of the terminal 800. Even further, the display 805 may be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The Display 805 can be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and other materials.

The camera assembly 806 is used to capture images or video. Optionally, camera assembly 806 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. In some embodiments, the number of the rear cameras is at least two, and each rear camera is any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and VR (Virtual Reality) shooting functions or other fusion shooting functions. In some embodiments, camera assembly 806 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.

The audio circuit 807 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 801 for processing or inputting the electric signals to the radio frequency circuit 804 to realize voice communication. For the purpose of stereo sound collection or noise reduction, a plurality of microphones may be provided at different portions of the terminal 800. The microphone may also be an array microphone or an omni-directional pick-up microphone. The speaker is used to convert electrical signals from the processor 801 or the radio frequency circuit 804 into sound waves. The loudspeaker can be a traditional film loudspeaker or a piezoelectric ceramic loudspeaker. When the speaker is a piezoelectric ceramic speaker, the speaker can be used for purposes such as converting an electric signal into a sound wave audible to a human being, or converting an electric signal into a sound wave inaudible to a human being to measure a distance. In some embodiments, the audio circuitry 807 may also include a headphone jack.

The positioning component 808 is used to locate the current geographic position of the terminal 800 for navigation or LBS (Location Based Service). The Positioning component 808 may be a Positioning component based on the Global Positioning System (GPS) in the united states, the beidou System in china, or the galileo System in russia.

Power supply 809 is used to provide power to various components in terminal 800. The power supply 809 can be ac, dc, disposable or rechargeable. When the power supply 809 includes a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.

In some embodiments, terminal 800 also includes one or more sensors 810. The one or more sensors 810 include, but are not limited to: acceleration sensor 811, gyro sensor 812, pressure sensor 813, fingerprint sensor 814, optical sensor 815 and proximity sensor 816.

The acceleration sensor 811 may detect the magnitude of acceleration in three coordinate axes of the coordinate system established with the terminal 800. For example, the acceleration sensor 811 may be used to detect the components of the gravitational acceleration in three coordinate axes. The processor 801 may control the touch screen 805 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 811. The acceleration sensor 811 may also be used for acquisition of motion data of a game or a user.

The gyro sensor 812 may detect a body direction and a rotation angle of the terminal 800, and the gyro sensor 812 may cooperate with the acceleration sensor 811 to acquire a 3D motion of the user with respect to the terminal 800. From the data collected by the gyro sensor 812, the processor 801 may implement the following functions: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.

Pressure sensors 813 may be disposed on the side bezel of terminal 800 and/or underneath touch display 805. When the pressure sensor 813 is disposed on the side frame of the terminal 800, the holding signal of the user to the terminal 800 can be detected, and the processor 801 performs left-right hand recognition or shortcut operation according to the holding signal collected by the pressure sensor 813. When the pressure sensor 813 is disposed at a lower layer of the touch display screen 805, the processor 801 controls the operability control on the UI interface according to the pressure operation of the user on the touch display screen 805. The operability control comprises at least one of a button control, a scroll bar control, an icon control and a menu control.

The fingerprint sensor 814 is used for collecting a fingerprint of the user, and the processor 801 identifies the identity of the user according to the fingerprint collected by the fingerprint sensor 814, or the fingerprint sensor 814 identifies the identity of the user according to the collected fingerprint. Upon identifying that the user's identity is a trusted identity, the processor 801 authorizes the user to perform relevant sensitive operations including unlocking a screen, viewing encrypted information, downloading software, paying for and changing settings, etc. Fingerprint sensor 814 may be disposed on the front, back, or side of terminal 800. When a physical button or a vendor Logo is provided on the terminal 800, the fingerprint sensor 814 may be integrated with the physical button or the vendor Logo.

The optical sensor 815 is used to collect the ambient light intensity. In one embodiment, the processor 801 may control the display brightness of the touch screen 805 based on the ambient light intensity collected by the optical sensor 815. Specifically, when the ambient light intensity is high, the display brightness of the touch display screen 805 is increased; when the ambient light intensity is low, the display brightness of the touch display 805 is turned down. In another embodiment, the processor 801 may also dynamically adjust the shooting parameters of the camera assembly 806 based on the ambient light intensity collected by the optical sensor 815.

A proximity sensor 816, also known as a distance sensor, is typically provided on the front panel of the terminal 800. The proximity sensor 816 is used to collect the distance between the user and the front surface of the terminal 800. In one embodiment, when the proximity sensor 816 detects that the distance between the user and the front surface of the terminal 800 gradually decreases, the processor 801 controls the touch display 805 to switch from the bright screen state to the dark screen state; when the proximity sensor 816 detects that the distance between the user and the front surface of the terminal 800 becomes gradually larger, the processor 801 controls the touch display 805 to switch from the screen-on state to the screen-on state.

Those skilled in the art will appreciate that the configuration shown in fig. 8 is not intended to be limiting of terminal 800 and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used.

In some embodiments, a computer-readable storage medium is also provided, in which a computer program is stored, which when executed by a processor implements the steps of the pipe failure consequence determination method in the above embodiments. For example, the computer readable storage medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

It is noted that the computer-readable storage medium referred to herein may be a non-volatile storage medium, in other words, a non-transitory storage medium.

It should be understood that all or part of the steps for implementing the above embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The computer instructions may be stored in the computer-readable storage medium described above.

That is, in some embodiments, there is also provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the steps of the pipe failure consequence determination method described above.

The above-mentioned embodiments are provided not to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for determining the consequences of a pipeline failure, the method comprising:

2. The method of claim 1, wherein the pipeline parameters include at least one of a transport medium, a laying mode, a type of buried ground, a pipeline specification, a pipeline type, a pipeline throughput, and a pipeline pressure of the target pipeline;

3. The method of claim 1, wherein multiplying the power of the safety impact level, the power of the environmental impact level, and the power of the production impact level to obtain the target pipe's failure consequence comprises:

4. The method of claim 1, wherein after multiplying the power of the safety impact level, the power of the environmental impact level, and the power of the production impact level to obtain the target pipe's consequences of failure, further comprising:

5. The method of claim 1, wherein after multiplying the power of the safety impact level, the power of the environmental impact level, and the power of the production impact level to obtain the target pipe's consequences of failure, further comprising:

6. A pipeline failure outcome determination apparatus, the apparatus comprising:

7. The apparatus of claim 6, wherein the pipeline parameter includes at least one of a transport medium, a laying method, a buried type, a pipeline specification, a pipeline type, a pipeline throughput, and a pipeline pressure of the target pipeline;

the first determining module includes:

8. The apparatus of claim 6, wherein the computing module is to:

9. The apparatus of claim 6, wherein the apparatus further comprises:

10. The apparatus of claim 6, wherein the apparatus further comprises:

11. A terminal, characterized in that the terminal comprises a memory for storing a computer program and a processor for executing the computer program stored in the memory to implement the steps of the method according to any of the preceding claims 1-5.

12. A computer-readable storage medium, characterized in that the storage medium has stored therein a computer program which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.