CN113627697A - Failure grade obtaining method and device for oil and gas pipeline crossing section - Google Patents
Failure grade obtaining method and device for oil and gas pipeline crossing section Download PDFInfo
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Abstract
The embodiment of the invention provides a failure grade obtaining method and device for a crossing section of an oil and gas pipeline, wherein the method comprises the following steps: determining the general failure probability of the pipeline according to the pipeline failure statistical data; inquiring a pre-established probability correction system according to index items corresponding to various hazard factors of a crossing pipe section of the pipeline, and acquiring correction factors corresponding to various hazard factors of the crossing pipe section; determining probability correction factors of the crossing pipe sections according to the correction factors corresponding to the hazard factors of the crossing pipe sections; calculating the failure probability of the crossing pipe section according to the general failure probability and the probability correction factor; and determining the failure grade of the crossing pipe section according to the failure probability of the crossing pipe section. The embodiment of the invention can carry out special failure analysis on special laying working conditions such as crossing pipelines by taking the determined universal failure probability as a reference and combining the uncertain correction factors, thereby providing technical support for special risk evaluation and management.
Description
Technical Field
The invention relates to the technical field of pipeline transportation, in particular to a failure grade acquisition method and device for a crossing section of an oil and gas pipeline.
Background
Because the long-distance oil and gas pipeline is laid in various environments along the way, natural or artificial obstacles are inevitable, and the pipeline crossing project plays a vital role. The crossing engineering is a construction engineering for a pipeline to pass through the lower part of a river, a ditch, an overground or underground artificial structure, and the common crossing modes of the pipeline at present comprise a plurality of modes such as large excavation, directional drilling, shield tunneling and the like; the crossing project is a construction project for the pipeline to pass through the upper part of the obstacle in an overhead mode, and at present, the common crossing modes of the pipeline comprise truss crossing, arch bridge crossing, suspension cable crossing, cable-stayed lock crossing, beam type direct crossing and the like.
With the continuous expansion of oil and gas pipelines, the cross-over engineering is increased, and the pipeline cross-over section is an important component of a finished oil pipeline and is also a weak link of pipeline safety. Due to special laying working conditions, the pipeline crossing section has a hazard factor different from other sections, and meanwhile, the damage result of the pipeline crossing section is serious, especially the environmental pollution caused by leakage, and the pipeline repairing difficulty is high and the cost is high. Therefore, how to effectively evaluate the failure probability of the pipeline crossing the section and scientifically manage the risks is an important problem in pipeline management and use.
The inventor finds that in the prior art, the evaluation technologies of the failure possibility and failure probability of the pipeline are all on the whole pipeline, and no special evaluation technology for crossing the pipeline section exists, so that the orderly development of pipeline risk management is inconvenient.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a failure grade obtaining method and device for a crossing section of an oil and gas pipeline.
Specifically, the embodiment of the invention provides the following technical scheme:
in a first aspect, an embodiment of the present invention provides a failure level obtaining method for a crossing section of an oil and gas pipeline, including:
determining the general failure probability of the pipeline according to the pipeline failure statistical data;
inquiring a pre-established probability correction system according to index items corresponding to various hazard factors of a crossing pipe section of the pipeline, and acquiring correction factors corresponding to various hazard factors of the crossing pipe section; the probability correction system is stored with the mapping relation between the index items of each hazard factor penetrating through the pipe section and the correction factors of each index item in advance;
determining probability correction factors of the crossing pipe sections according to the correction factors corresponding to the hazard factors of the crossing pipe sections;
calculating the failure probability of the crossing pipe section according to the general failure probability and the probability correction factor;
and determining the failure grade of the crossing pipe section according to the failure probability of the crossing pipe section.
Further, the querying a pre-established probability correction system according to the index items corresponding to the hazard factors of the crossing pipe section of the pipeline to obtain the correction factors corresponding to the hazard factors of the crossing pipe section specifically includes:
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
wherein, the five failure modes of the cross pipe section comprise: third party failures, corrosion failures, design errors, mis-operations, and, fatigue and strength failures;
wherein, the third party destroys the hazard factors under the failure mode including: minimum burial depth, activity level, line marker, line patrol frequency, and bank and bottom revetment status;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and the corrosivity of the soil;
wherein, the design fault failure mode hazard factors include: crossing point selection, soil movement capacity, operation safety allowance, hazard identification, slope protection measures, pipe stabilizing measures and anticorrosive coating design;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction maloperation, and material preservation, maintenance work rules, staff training, monitoring measures and service life belonging to the category of maintenance maloperation;
among the hazards in the form of fatigue and strength failure include: the fatigue load, the suspension degree, the water flow speed and the flood-fighting water scouring capability which belong to the special factors of the pipeline crossing;
wherein the five failure modes across the pipe section include: third party failures, corrosion failures, design errors, mis-operations, and fatigue failures;
wherein, the third party destroys the hazard factors under the failure mode including: regional level, public propaganda and education, line patrol frequency and warning signs;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and atmospheric corrosivity;
wherein, the design fault failure mode hazard factors include: selection of crossing points, engineering types, operation safety margins, hazard identification, anticorrosive coating design and additional measures;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction misoperation, and material preservation, maintenance operation rules, staff training, monitoring measures and service life major structures belonging to the category of maintenance misoperation;
wherein, the hazard factors in the form of fatigue failure comprise: internal and external loads.
Further, the determining a probability correction factor of the cross-over pipe section according to the correction factor corresponding to each hazard factor of the cross-over pipe section specifically includes:
if the crossing pipe section of the pipeline is a crossing pipe section, respectively calculating correction factors of five failure modes of the crossing pipe section, and taking the product of the correction factors of the five failure modes as a probability correction factor of the crossing pipe section; wherein, the correction factor of each failure mode of the traversing tube is obtained by multiplying the correction factors of all hazard factors contained in the corresponding failure mode;
if the crossing pipe section of the pipeline is a crossing pipe section, respectively calculating correction factors of five failure modes of the crossing pipe section, and taking the product of the correction factors of the five failure modes as a probability correction factor of the crossing pipe section; wherein the correction factor for each failure mode across the pipe section is obtained by multiplying the correction factors of the hazard factors contained in the corresponding failure mode.
Further, the calculating the failure probability of the crossing pipe segment according to the general failure probability and the probability correction factor specifically includes:
if the crossing pipe section of the pipeline is a crossing pipe section, taking the product of the general failure probability and the probability correction factor of the crossing pipe section as the failure probability of the crossing pipe section;
and if the crossing pipe section of the pipeline is the crossing pipe section, taking the product of the general failure probability and the probability correction factor of the crossing pipe section as the failure probability of the crossing pipe section.
Further, the determining a general failure probability of the pipeline according to the pipeline failure statistical data specifically includes:
determining the pipe diameter of a pipeline, and inquiring a universal failure probability table according to the pipe diameter of the pipeline to obtain the universal failure probability of the pipeline;
the general failure probability table stores general failure probabilities of pipelines calculated according to the pipeline failure statistical data of all pipe diameters.
Further, the determining the failure level of the crossing pipe section according to the failure probability of the crossing pipe section specifically includes:
determining a failure probability range interval in which the failure probability is positioned according to the failure probability of the crossing pipe section;
inquiring a failure grade table according to the failure probability range to obtain the failure grade of the crossing pipe section;
and the failure grade table is pre-established with the corresponding relation between each failure grade and each failure probability range interval.
In a second aspect, an embodiment of the present invention provides a failure level obtaining device for an oil and gas pipeline crossing section, including:
the first determining module is used for determining the universal failure probability of the pipeline according to the pipeline failure statistical data;
the query module is used for querying a pre-established probability correction system according to the index items corresponding to the hazard factors of the crossing pipe section of the pipeline, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section; the probability correction system is stored with the mapping relation between the index items of each hazard factor penetrating through the pipe section and the correction factors of each index item in advance;
the second determination module is used for determining the probability correction factor of the crossing pipe section according to the correction factor corresponding to each hazard factor of the crossing pipe section;
the calculation module is used for calculating the failure probability of the crossing pipe section according to the general failure probability and the probability correction factor;
and the third determining module is used for determining the failure grade of the crossing pipe section according to the failure probability of the crossing pipe section.
Further, the query module is specifically configured to:
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
wherein, the five failure modes of the cross pipe section comprise: third party failures, corrosion failures, design errors, mis-operations, and, fatigue and strength failures;
wherein, the third party destroys the hazard factors under the failure mode including: minimum burial depth, activity level, line marker, line patrol frequency, and bank and bottom revetment status;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and the corrosivity of the soil;
wherein, the design fault failure mode hazard factors include: crossing point selection, soil movement capacity, operation safety allowance, hazard identification, slope protection measures, pipe stabilizing measures and anticorrosive coating design;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction maloperation, and material preservation, maintenance work rules, staff training, monitoring measures and service life belonging to the category of maintenance maloperation;
among the hazards in the form of fatigue and strength failure include: the fatigue load, the suspension degree, the water flow speed and the flood-fighting water scouring capability which belong to the special factors of the pipeline crossing;
wherein the five failure modes across the pipe section include: third party failures, corrosion failures, design errors, mis-operations, and fatigue failures;
wherein, the third party destroys the hazard factors under the failure mode including: regional level, public propaganda and education, line patrol frequency and warning signs;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and atmospheric corrosivity;
wherein, the design fault failure mode hazard factors include: selection of crossing points, engineering types, operation safety margins, hazard identification, anticorrosive coating design and additional measures;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction misoperation, and material preservation, maintenance operation rules, staff training, monitoring measures and service life major structures belonging to the category of maintenance misoperation;
wherein, the hazard factors in the form of fatigue failure comprise: internal and external loads.
In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to implement the method for obtaining the failure level of the oil and gas pipeline crossing segment according to the first aspect.
In a fourth aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for obtaining the failure level of the oil and gas pipeline crossing segment according to the first aspect.
According to the technical scheme, the failure grade acquisition method and device for the oil and gas pipeline crossing section, provided by the embodiment of the invention, can be used for carrying out special failure analysis on special laying working conditions such as crossing pipelines by taking the determined general failure probability as a reference and combining uncertain correction factors, so as to provide technical support for special risk evaluation and management; by formulating a configurable acceptable level of failure, the individual requirements of different objects can be met, and references are provided for implementing targeted management measures.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a failure level obtaining method for a crossing section of an oil and gas pipeline according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a hazard factor analysis for a cross-pipe section according to an embodiment of the present invention;
FIG. 3 is a graph illustrating a hazard factor analysis across a pipe segment according to one embodiment of the present invention;
fig. 4 is a schematic structural diagram of a failure level obtaining device of an oil and gas pipeline crossing section according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a flowchart of a failure level obtaining method for a crossing section of an oil and gas pipeline provided by an embodiment of the invention. As shown in fig. 1, the method for acquiring the failure level of the oil and gas pipeline crossing section provided by the embodiment of the invention comprises the following steps:
step 101: determining the general failure probability of the pipeline according to the pipeline failure statistical data;
in this step, the general failure frequency of the pipeline, usually in units of (every kilometer per year), can be calculated from the statistical data of the pipeline failure database, and then the general failure frequency is regarded as the general failure probability for use, and the general failure probability of the pipeline is expressed by aff. The failure database is subject to the internal statistical data of the enterprise, and if the enterprise lacks the statistics in the aspect, the failure database can be replaced by the statistical data of the same industry at home and abroad.
Step 102: inquiring a pre-established probability correction system according to index items corresponding to various hazard factors of a crossing pipe section of the pipeline, and acquiring correction factors corresponding to various hazard factors of the crossing pipe section; the probability correction system is stored with the mapping relation between the index items of each hazard factor penetrating through the pipe section and the correction factors of each index item in advance;
in the step, aiming at the engineering practice of large-scale crossing in the finished oil pipeline, on the basis of extensive investigation and technical theory, the hazard factors of the finished oil crossing pipe section and the crossing pipe section are respectively divided. Wherein the failure mode of the cross pipe section is divided into the following five aspects: third party damage, corrosion damage, design errors, misoperation, fatigue and strength damage, and the identification result is shown in FIG. 2; the failure modes across the pipe sections are summarized in the following five aspects, including: third party failures, corrosion failures, design errors, misoperations, and fatigue failures, the recognition results are shown in fig. 3.
As can be seen from fig. 2 and 3, each failure mode of traversing a pipe segment or spanning a pipe segment includes a corresponding hazard factor, for example, a hazard factor in a failure mode of third party damage to traversing a pipe segment includes: minimum burial depth, activity level, line marking, line patrol frequency, and bank and bottom revetment status. In actual engineering, the actual situations corresponding to each hazard factor are different, for example, for line patrol frequency, there are multiple situations such as 2 times a day, 1 time a day, 2 times a week, 1 time a week, etc., and the multiple situations corresponding to each hazard factor herein can be understood as multiple index items corresponding to each hazard factor. In this step, a plurality of index items corresponding to each hazard factor are predetermined, and the magnitude of the correction factor corresponding to each index item is predetermined (for example, for the line patrol frequency, the correction factor corresponding to the index item 2 times a day is 0.8, and the correction factor corresponding to the index item 1 time a day is 1, etc.), and then a probability correction system is established in advance. The probability correction system stores in advance mapping relationships between index items of each hazard factor penetrating through the pipe section and correction factors of each index item, which can be specifically referred to contents shown in tables 1 to 10 in the following embodiments.
In this step, based on a pre-established probability correction system, according to the index items corresponding to the hazard factors of the crossing pipe section of the pipeline, the pre-established probability correction system is queried, and correction factors corresponding to the hazard factors of the crossing pipe section are obtained.
Step 103: determining probability correction factors of the crossing pipe sections according to the correction factors corresponding to the hazard factors of the crossing pipe sections;
in the step, the probability correction factor of the crossing pipe section is determined according to the correction factor corresponding to each hazard factor of the crossing pipe section. For example, the correction factors corresponding to the hazard factors of the crossing pipe section can be multiplied to determine the probability correction factor of the crossing pipe section; or, the weight coefficient of the correction factor corresponding to each hazard factor may be determined first, then the correction factor corresponding to each hazard factor is further adjusted by using the weight coefficient to obtain the adjusted correction factor corresponding to each hazard factor, and finally the adjusted correction factors corresponding to each hazard factor are multiplied to determine the probability correction factor of the cross-over pipe section. In addition, the correction factors corresponding to the hazard factors of the crossing pipe section can be added to determine the probability correction factor of the crossing pipe section. The processing process is not particularly limited in the step, and the probability correction factor of the crossing pipe section can be determined by adopting different calculation modes according to actual needs and according to the correction factors corresponding to the hazard factors of the crossing pipe section.
Step 104: calculating the failure probability of the crossing pipe section according to the general failure probability and the probability correction factor;
in the step, in the process of calculating the pipeline failure probability, the uncertainty correction should be performed on the pipeline general failure probability predicted by using the certainty calculation method, that is, the pipeline general failure probability aff is calculated according to the statistical data of the pipeline failure database, the probability correction factor fcy (fky) is calculated according to different practical situations in the specific evaluation work, and the failure probability PoF of the pipeline is calculated by combining the general failure probability and the probability correction factor. The expression for the probability of failure PoF across a pipe is therefore as follows:
PoF＝aff×F
wherein: f represents a cross-pipe failure probability correction factor, i.e., a cross-pipe failure probability correction factor FCY or a cross-pipe failure probability correction factor FKY.
Step 105: and determining the failure grade of the crossing pipe section according to the failure probability of the crossing pipe section.
In this step, an acceptable standard of the cross-over pipeline failure possibility can be formulated according to the failure acceptable level of the enterprise, the cross-over pipeline failure possibility is graded, the failure grade of the cross-over pipeline is determined by combining the calculated cross-over pipeline failure probability, and the cross-over pipeline failure possibility is further judged.
According to the technical scheme, the failure grade obtaining method for the oil and gas pipeline crossing section provided by the embodiment of the invention can be used for carrying out special failure analysis on special laying conditions of the crossing pipeline by taking the determined general failure probability as a reference and combining uncertain correction factors, and provides technical support for special risk evaluation and management; by formulating a configurable acceptable level of failure, the individual requirements of different objects can be met, and references are provided for implementing targeted management measures.
Based on the content of the foregoing embodiment, in this embodiment, the querying a pre-established probability correction system according to the index items corresponding to the hazard factors of the crossing pipe section of the pipeline, and obtaining the correction factors corresponding to the hazard factors of the crossing pipe section specifically includes:
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
wherein, the five failure modes of the cross pipe section comprise: third party failures, corrosion failures, design errors, mis-operations, and, fatigue and strength failures;
wherein, the third party destroys the hazard factors under the failure mode including: minimum burial depth, activity level, line marker, line patrol frequency, and bank and bottom revetment status;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and the corrosivity of the soil;
wherein, the design fault failure mode hazard factors include: crossing point selection, soil movement capacity, operation safety allowance, hazard identification, slope protection measures, pipe stabilizing measures and anticorrosive coating design;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction maloperation, and material preservation, maintenance work rules, staff training, monitoring measures and service life belonging to the category of maintenance maloperation;
among the hazards in the form of fatigue and strength failure include: the fatigue load, the suspension degree, the water flow speed and the flood-fighting water scouring capability which belong to the special factors of the pipeline crossing;
wherein the five failure modes across the pipe section include: third party failures, corrosion failures, design errors, mis-operations, and fatigue failures;
wherein, the third party destroys the hazard factors under the failure mode including: regional level, public propaganda and education, line patrol frequency and warning signs;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and atmospheric corrosivity;
wherein, the design fault failure mode hazard factors include: selection of crossing points, engineering types, operation safety margins, hazard identification, anticorrosive coating design and additional measures;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction misoperation, and material preservation, maintenance operation rules, staff training, monitoring measures and service life major structures belonging to the category of maintenance misoperation;
wherein, the hazard factors in the form of fatigue failure comprise: internal and external loads.
In the present embodiment, a cross-pipe failure probability correction system is established in advance based on the analysis result of the cross-pipe hazard factor, as shown in tables 1 to 10 below. Index items of each hazard factor and correction factors of each index item are determined in tables 1 to 10.
For a traversing pipe segment, five failure modes include: third party failures, corrosion failures, design errors, mishandling, and, fatigue and strength failures. Among them, the third party destruction correction system is shown in table 1, the corrosion destruction correction system is shown in table 2, the design error correction system is shown in table 3, the misoperation correction system is shown in table 4, and the fatigue and strength destruction correction system is shown in table 5.
For a spanning pipe segment, five failure modes include: third party failures, corrosion failures, design errors, mis-operations, and fatigue failures. The third-party damage correction system is shown in table 6, the corrosion damage correction system is shown in table 7, the design error correction system is shown in table 8, the misoperation correction system is shown in table 9, and the fatigue damage correction system is shown in table 10.
TABLE 1 third party damage correction system for pipeline crossing
TABLE 2 correcting system for corrosion damage of crossing pipe
TABLE 3 correction system for design errors in pipeline crossing
TABLE 4 pipeline crossing misoperation correction system
TABLE 5 correction system for fatigue and strength failure of crossing pipe
TABLE 6 third party damage correction architecture for cross-over pipelines
TABLE 7 correction system for corrosion damage across pipelines
TABLE 8 correction system for design errors across pipelines
TABLE 9 correction system for pipeline crossing misoperation
TABLE 10 fatigue failure correction system for crossover piping
In this embodiment, if the crossing pipe section of the pipeline is a crossing pipe section, querying pre-established probability correction system tables 1 to 5 according to index items corresponding to hazard factors in five failure modes of the crossing pipe section to obtain correction factors corresponding to the hazard factors of the crossing pipe section; if the crossing pipe section of the pipeline is the crossing pipe section, inquiring pre-established probability correction system tables 6-10 according to index items corresponding to the hazard factors under the five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section.
In the embodiment, the correction factors corresponding to various hazard factors of the crossing pipe section in various failure modes are considered, so that the probability correction factors of the crossing pipe section, which are finally calculated according to the correction factors, can be fully expressed in the degree of correction required on the basis of the general failure probability of the pipeline, and the finally obtained failure probability of the crossing pipe section can accurately reflect the failure possibility of the crossing pipe section.
In this embodiment, it is assumed that the pipeline passes through a large navigable river, the river channel shipping frequency is high, pipeline enterprises make one line patrol every day, and the pipeline internal detection is completed 2 years ago, and the passing pipe section has no abnormal wall thickness. In addition, the design, construction, operation and maintenance of the pipeline all meet the standard requirements. Therefore, according to the above tables 1 to 5, it can be obtained that the correction factor corresponding to the hazard factor (activity level) of the crossing pipe section is 2, the correction factor corresponding to the hazard factor (patrol frequency) of the crossing pipe section is 1, the correction factor corresponding to the hazard factor (in-pipe detection) of the crossing pipe section is 1, and the correction factor corresponding to the hazard factor (residual wall thickness of the pipe) of the crossing pipe section is 1. In addition, because the design, construction, operation and maintenance of the pipeline all meet the standard requirements, the correction factors of the index items corresponding to the design, construction, operation and maintenance are all 1.
Based on the content of the foregoing embodiment, in this embodiment, the determining a probability correction factor for a crossing pipe segment according to correction factors corresponding to hazard factors of the crossing pipe segment specifically includes:
if the crossing pipe section of the pipeline is a crossing pipe section, respectively calculating correction factors of five failure modes of the crossing pipe section, and taking the product of the correction factors of the five failure modes as a probability correction factor of the crossing pipe section; wherein, the correction factor of each failure mode of the traversing tube is obtained by multiplying the correction factors of all hazard factors contained in the corresponding failure mode;
if the crossing pipe section of the pipeline is a crossing pipe section, respectively calculating correction factors of five failure modes of the crossing pipe section, and taking the product of the correction factors of the five failure modes as a probability correction factor of the crossing pipe section; wherein the correction factor for each failure mode across the pipe section is obtained by multiplying the correction factors of the hazard factors contained in the corresponding failure mode.
In this embodiment, a cross-over pipeline failure probability correction system is established according to the analysis result of the cross-over pipeline segment hazard factors, and index items of each factor and correction factors of each index item are specified. Correction factor F for failure probability of crossing pipelineCYComprises the following steps:
FCY＝FDSF·FFS·FSJ·FWCZ·FPQ
wherein, FDSFA correction factor indicative of third party corruption; fFSA correction factor indicative of corrosion damage; fSJA correction factor representing a design error; fWCZA correction factor indicative of a malfunction; fPQCorrection factors indicating fatigue and strength failure. Wherein, the 5 subentry correction factors are the product of the correction factors of each hazard factor index item. Similarly, a similar calculation method is also adopted for the span pipe section, and the description of this embodiment is omitted.
In the embodiment, correction factors of five failure modes of crossing the pipe section are respectively calculated, and the product of the correction factors of the five failure modes is used as a probability correction factor of crossing the pipe section; the correction factors of each failure mode of the crossing pipe are obtained by multiplying the correction factors of all hazard factors contained in the corresponding failure mode, and by adopting the calculation mode, the calculated probability correction factors of the crossing pipe section can accurately reflect the degree of correction on the basis of the general failure probability of the pipeline.
For example, in this embodiment, it is assumed that a pipeline traverses a large navigable river, the shipping frequency of the river is high, a pipeline enterprise makes an inspection in the pipeline once a day 2 years ago, and the condition of abnormal wall thickness does not occur in the traversing pipe section. In addition, the design, construction, operation and maintenance of the pipeline all meet the standard requirements. Therefore, according to the above tables 1 to 5, it can be obtained that the correction factor corresponding to the hazard factor (activity level) of the crossing pipe section is 2, the correction factor corresponding to the hazard factor (patrol frequency) of the crossing pipe section is 1, the correction factor corresponding to the hazard factor (in-pipe detection) of the crossing pipe section is 1, and the correction factor corresponding to the hazard factor (residual wall thickness of the pipe) of the crossing pipe section is 1. In addition, because the design, construction, operation and maintenance of the pipeline all meet the standard requirements, the correction factors of the index items corresponding to the design, construction, operation and maintenance are all 1. Therefore, according to the correction factor calculation method described above, the correction factor F of the failure probability of the cross pipeline can be obtainedCY2. That is, in this embodiment, because the shipping frequency of the river channel passing through the pipe segment is high (corresponding to the activity level, which is a hazard factor), the failure probability of the pipe segment passing through needs to be corrected by 2 times on the basis of the general failure probability of the pipeline, so that the finally obtained failure probability of the pipe segment passing through can accurately reflect the failure possibility of the pipe segment passing through.
Based on the content of the foregoing embodiment, in this embodiment, the calculating the failure probability of the cross-pipe segment according to the general failure probability and the probability correction factor specifically includes:
if the crossing pipe section of the pipeline is a crossing pipe section, taking the product of the general failure probability and the probability correction factor of the crossing pipe section as the failure probability of the crossing pipe section;
and if the crossing pipe section of the pipeline is the crossing pipe section, taking the product of the general failure probability and the probability correction factor of the crossing pipe section as the failure probability of the crossing pipe section.
In this embodiment, in the process of calculating the pipeline failure probability, the uncertainty of the general pipeline failure probability predicted by using the deterministic calculation method should be corrected, that is, the general pipeline failure probability aff is calculated according to the statistical data of the pipeline failure database, the probability correction factor fcy (fky) is calculated according to different practical situations in the specific evaluation work, and the failure probability PoF of the pipeline is calculated by combining the general pipeline failure probability and the probability correction factor. The expression for the probability of failure PoF across a pipe is therefore as follows:
PoF＝aff×F
wherein: f represents a cross-pipe failure probability correction factor, i.e., a cross-pipe failure probability correction factor FCY or a cross-pipe failure probability correction factor FKY.
Based on the content of the foregoing embodiment, in this embodiment, the determining a general failure probability of the pipeline according to the pipeline failure statistical data specifically includes:
determining the pipe diameter of a pipeline, and inquiring a universal failure probability table according to the pipe diameter of the pipeline to obtain the universal failure probability of the pipeline;
the general failure probability table stores general failure probabilities of pipelines calculated according to the pipeline failure statistical data of all pipe diameters.
In this embodiment, the pipe diameter of the pipe is used as a condition for acquiring the general failure probability of the pipe, so that the general failure probability corresponding to the pipe can be accurately determined.
In this embodiment, the general failure frequency of the pipeline is calculated from the statistics of the pipeline failure database, usually in units of (every kilometer per year), and then the general failure frequency is used as the general failure probability, which is expressed by aff.The general failure probability is shown in table 11 for different pipe diameters. In the present embodiment, it is assumed that the crossing pipe section of the pipeline is a crossing pipe section, and the pipe diameter is 400mm, so the corresponding general failure probability is 1.2 × 10-4Sub/(km. a).
TABLE 11 Universal failure probability for pipelines
| Pipe characteristics/mm | General failure probability aff (times/(km. a)] |
| Nominal diameter of pipeline is less than or equal to 200 | 1.0×10-3 |
| The nominal diameter of the pipeline is more than 200 and less than or equal to 350 | 8.0×10-4 |
| The nominal diameter of the pipeline is more than 350 and less than or equal to 550 | 1.2×10-4 |
| The nominal diameter of the pipeline is more than 550 and less than or equal to 700 | 2.5×10-4 |
| Nominal diameter of pipeline is more than 700 | 2.5×10-4 |
Based on the content of the foregoing embodiment, in this embodiment, the determining the failure level of the cross-over pipe segment according to the failure probability of the cross-over pipe segment specifically includes:
determining a failure probability range interval in which the failure probability is positioned according to the failure probability of the crossing pipe section;
inquiring a failure grade table according to the failure probability range to obtain the failure grade of the crossing pipe section;
and the failure grade table is pre-established with the corresponding relation between each failure grade and each failure probability range interval.
In the embodiment, an acceptable standard of the failure possibility of the crossing pipeline is formulated according to the failure acceptable level of the enterprise, the acceptable standard is graded, and the failure possibility of the crossing pipeline is judged by combining the calculated failure probability.
In this embodiment, the classification of the failure probability of the pipeline can be referred to in table 12.
TABLE 12 failure probability rating
| Level of probability of failure | Interval(s) |
| 1 | 0.00000<PoF≤0.00001 |
| 2 | 0.00001<PoF≤0.00010 |
| 3 | 0.00010<PoF≤0.00100 |
| 4 | 0.00100<PoF≤0.01000 |
| 5 | 0.01000<PoF≤1.00000 |
In this embodiment, since the failure probability of the crossing pipe section is an absolute value, the failure degree of the crossing pipe section or the acceptability of the failure status cannot be reflected, so that the embodiment establishes a failure level table in which the correspondence between each failure level and each failure probability range section is stored in advance, and thus the failure level of the crossing pipe section can be determined according to the range section in which the failure probability of the crossing pipe section is located, and further whether the failure probability of the crossing pipe section is within the acceptability range can be determined according to the determined failure level.
In this example, assume that a general failure probability of 1.2 × 10 is combined-4The order/(km · a) and a correction factor of 2 result in a failure probability across the pipeline PoF of 2.4 × 10-4Second/(km · a), then it can be judged that its failure probability level is "3".
In this embodiment, it is assumed that the acceptance criteria according to the predetermined failure probability of the traversing pipe segment are: when the failure probability level of the pipeline is "4" and above, the failure probability is unacceptable. Since the failure probability level calculated in this embodiment is "3", the failure probability across the pipe segment in this embodiment is within an acceptable range.
According to the technical scheme, the method for acquiring the failure grade of the oil-gas pipeline crossing section is used for acquiring the failure probability of the crossing pipeline by starting from a definite universal failure probability with certainty and combining a probability correction factor with uncertainty, and the failure possibility grade of the pipeline is judged according to a failure acceptable standard.
Therefore, the failure probability evaluation model of the crossing section of the finished oil pipeline is established, the hazard factors of the crossing section are analyzed, the acceptability of the crossing pipeline failure is judged, the barrier of the prior art is broken, and the special risk management is facilitated.
Fig. 4 shows a schematic structural diagram of a failure level acquisition device for an oil and gas pipeline crossing section provided by the embodiment of the invention. As shown in fig. 4, the failure level obtaining apparatus for an oil and gas pipeline crossing section provided by this embodiment includes: a first determining module 21, a querying module 22, a second determining module 23, a calculating module 24 and a third determining module 25, wherein:
the first determining module 21 is configured to determine a general failure probability of the pipeline according to the pipeline failure statistical data;
the query module 22 is configured to query a pre-established probability correction system according to the index items corresponding to the hazard factors of the crossing pipe section of the pipeline, and obtain correction factors corresponding to the hazard factors of the crossing pipe section; the probability correction system is stored with the mapping relation between the index items of each hazard factor penetrating through the pipe section and the correction factors of each index item in advance;
the second determining module 23 is configured to determine a probability correction factor of the crossing pipe section according to the correction factor corresponding to each hazard factor of the crossing pipe section;
the calculation module 24 is configured to calculate the failure probability of the crossing pipe segment according to the general failure probability and the probability correction factor;
and the third determining module 25 is used for determining the failure level of the crossing pipe section according to the failure probability of the crossing pipe section.
Based on the content of the foregoing embodiment, in this embodiment, the query module 22 is specifically configured to:
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
wherein, the five failure modes of the cross pipe section comprise: third party failures, corrosion failures, design errors, mis-operations, and, fatigue and strength failures;
wherein, the third party destroys the hazard factors under the failure mode including: minimum burial depth, activity level, line marker, line patrol frequency, and bank and bottom revetment status;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and the corrosivity of the soil;
wherein, the design fault failure mode hazard factors include: crossing point selection, soil movement capacity, operation safety allowance, hazard identification, slope protection measures, pipe stabilizing measures and anticorrosive coating design;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction maloperation, and material preservation, maintenance work rules, staff training, monitoring measures and service life belonging to the category of maintenance maloperation;
among the hazards in the form of fatigue and strength failure include: the fatigue load, the suspension degree, the water flow speed and the flood-fighting water scouring capability which belong to the special factors of the pipeline crossing;
wherein the five failure modes across the pipe section include: third party failures, corrosion failures, design errors, mis-operations, and fatigue failures;
wherein, the third party destroys the hazard factors under the failure mode including: regional level, public propaganda and education, line patrol frequency and warning signs;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and atmospheric corrosivity;
wherein, the design fault failure mode hazard factors include: selection of crossing points, engineering types, operation safety margins, hazard identification, anticorrosive coating design and additional measures;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction misoperation, and material preservation, maintenance operation rules, staff training, monitoring measures and service life major structures belonging to the category of maintenance misoperation;
wherein, the hazard factors in the form of fatigue failure comprise: internal and external loads.
The failure level acquisition device for the oil and gas pipeline crossing section provided by the embodiment of the invention can be used for executing the failure level acquisition method for the oil and gas pipeline crossing section in the embodiment, and the working principle and the beneficial effect are similar, so detailed description is omitted here, and specific contents can be referred to the introduction of the embodiment.
In this embodiment, it should be noted that each module in the apparatus according to the embodiment of the present invention may be integrated into a whole or may be separately disposed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.
Based on the same inventive concept, another embodiment of the present invention provides an electronic device, which specifically includes the following components, with reference to fig. 5: a processor 301, a memory 302, a communication interface 303, and a communication bus 304;
the processor 301, the memory 302 and the communication interface 303 complete mutual communication through the communication bus 304;
the processor 301 is configured to call a computer program in the memory 302, and when the processor executes the computer program, the processor implements all the steps of the above-mentioned failure level obtaining method for the oil and gas pipeline crossing section, for example, when the processor executes the computer program, the processor implements the following processes: determining the general failure probability of the pipeline according to the pipeline failure statistical data; inquiring a pre-established probability correction system according to index items corresponding to various hazard factors of a crossing pipe section of the pipeline, and acquiring correction factors corresponding to various hazard factors of the crossing pipe section; the probability correction system is stored with the mapping relation between the index items of each hazard factor penetrating through the pipe section and the correction factors of each index item in advance; determining probability correction factors of the crossing pipe sections according to the correction factors corresponding to the hazard factors of the crossing pipe sections; calculating the failure probability of the crossing pipe section according to the general failure probability and the probability correction factor; and determining the failure grade of the crossing pipe section according to the failure probability of the crossing pipe section.
It will be appreciated that the detailed functions and extended functions that the computer program may perform may be as described with reference to the above embodiments.
Based on the same inventive concept, another embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements all the steps of the above-mentioned method for acquiring failure levels of a cross-over section of an oil and gas pipeline, for example, the processor implements the following processes when executing the computer program: obtaining a sample program; performing static analysis on the sample program to obtain a static analysis result; carrying out dynamic analysis on the sample program to obtain a dynamic analysis result; performing intelligence analysis on the sample program based on the static analysis result and/or the dynamic analysis result to obtain an intelligence analysis result; and determining the malicious degree of the sample program according to the static analysis result, the dynamic analysis result and the intelligence analysis result.
It will be appreciated that the detailed functions and extended functions that the computer program may perform may be as described with reference to the above embodiments.
In addition, the logic instructions in the memory may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on such understanding, the above technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the failure level obtaining method of the oil and gas pipeline crossing segment according to the various embodiments or some parts of the embodiments.
Moreover, in the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Furthermore, in the present disclosure, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A failure grade obtaining method for a crossing section of an oil and gas pipeline is characterized by comprising the following steps:
determining the general failure probability of the pipeline according to the pipeline failure statistical data;
inquiring a pre-established probability correction system according to index items corresponding to various hazard factors of a crossing pipe section of the pipeline, and acquiring correction factors corresponding to various hazard factors of the crossing pipe section; the probability correction system is stored with the mapping relation between the index items of each hazard factor penetrating through the pipe section and the correction factors of each index item in advance;
determining probability correction factors of the crossing pipe sections according to the correction factors corresponding to the hazard factors of the crossing pipe sections;
calculating the failure probability of the crossing pipe section according to the general failure probability and the probability correction factor;
and determining the failure grade of the crossing pipe section according to the failure probability of the crossing pipe section.
2. The method for obtaining the failure grade of the oil and gas pipeline crossing section according to claim 1, wherein the step of inquiring a pre-established probability correction system according to the index items corresponding to the hazard factors of the pipeline crossing section to obtain the correction factors corresponding to the hazard factors of the pipeline crossing section specifically comprises the steps of:
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
wherein, the five failure modes of the cross pipe section comprise: third party failures, corrosion failures, design errors, mis-operations, and, fatigue and strength failures;
wherein, the third party destroys the hazard factors under the failure mode including: minimum burial depth, activity level, line marker, line patrol frequency, and bank and bottom revetment status;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and the corrosivity of the soil;
wherein, the design fault failure mode hazard factors include: crossing point selection, soil movement capacity, operation safety allowance, hazard identification, slope protection measures, pipe stabilizing measures and anticorrosive coating design;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction maloperation, and material preservation, maintenance work rules, staff training, monitoring measures and service life belonging to the category of maintenance maloperation;
among the hazards in the form of fatigue and strength failure include: the fatigue load, the suspension degree, the water flow speed and the flood-fighting water scouring capability which belong to the special factors of the pipeline crossing;
wherein the five failure modes across the pipe section include: third party failures, corrosion failures, design errors, mis-operations, and fatigue failures;
wherein, the third party destroys the hazard factors under the failure mode including: regional level, public propaganda and education, line patrol frequency and warning signs;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and atmospheric corrosivity;
wherein, the design fault failure mode hazard factors include: selection of crossing points, engineering types, operation safety margins, hazard identification, anticorrosive coating design and additional measures;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction misoperation, and material preservation, maintenance operation rules, staff training, monitoring measures and service life major structures belonging to the category of maintenance misoperation;
wherein, the hazard factors in the form of fatigue failure comprise: internal and external loads.
3. The method for obtaining the failure grade of the oil and gas pipeline crossing section according to claim 2, wherein the determining of the probability correction factor of the crossing section according to the correction factor corresponding to each hazard factor of the crossing section specifically comprises:
if the crossing pipe section of the pipeline is a crossing pipe section, respectively calculating correction factors of five failure modes of the crossing pipe section, and taking the product of the correction factors of the five failure modes as a probability correction factor of the crossing pipe section; wherein, the correction factor of each failure mode of the traversing tube is obtained by multiplying the correction factors of all hazard factors contained in the corresponding failure mode;
if the crossing pipe section of the pipeline is a crossing pipe section, respectively calculating correction factors of five failure modes of the crossing pipe section, and taking the product of the correction factors of the five failure modes as a probability correction factor of the crossing pipe section; wherein the correction factor for each failure mode across the pipe section is obtained by multiplying the correction factors of the hazard factors contained in the corresponding failure mode.
4. The method for obtaining the failure level of the oil and gas pipeline crossing segment according to claim 3, wherein the calculating the failure probability of the crossing segment according to the general failure probability and the probability correction factor specifically comprises:
if the crossing pipe section of the pipeline is a crossing pipe section, taking the product of the general failure probability and the probability correction factor of the crossing pipe section as the failure probability of the crossing pipe section;
and if the crossing pipe section of the pipeline is the crossing pipe section, taking the product of the general failure probability and the probability correction factor of the crossing pipe section as the failure probability of the crossing pipe section.
5. The method for acquiring the failure level of the oil and gas pipeline crossing segment according to claim 1, wherein the determining the general failure probability of the pipeline according to the pipeline failure statistical data specifically comprises:
determining the pipe diameter of a pipeline, and inquiring a universal failure probability table according to the pipe diameter of the pipeline to obtain the universal failure probability of the pipeline;
the general failure probability table stores general failure probabilities of pipelines calculated according to the pipeline failure statistical data of all pipe diameters.
6. The method for acquiring the failure level of the oil and gas pipeline crossing section according to claim 1, wherein the determining the failure level of the crossing section according to the failure probability of the crossing section specifically comprises:
determining a failure probability range interval in which the failure probability is positioned according to the failure probability of the crossing pipe section;
inquiring a failure grade table according to the failure probability range to obtain the failure grade of the crossing pipe section;
and the failure grade table is pre-established with the corresponding relation between each failure grade and each failure probability range interval.
7. The utility model provides an oil and gas pipeline wears to stride across failure level acquisition device of section which characterized in that includes:
the first determining module is used for determining the universal failure probability of the pipeline according to the pipeline failure statistical data;
the query module is used for querying a pre-established probability correction system according to the index items corresponding to the hazard factors of the crossing pipe section of the pipeline, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section; the probability correction system is stored with the mapping relation between the index items of each hazard factor penetrating through the pipe section and the correction factors of each index item in advance;
the second determination module is used for determining the probability correction factor of the crossing pipe section according to the correction factor corresponding to each hazard factor of the crossing pipe section;
the calculation module is used for calculating the failure probability of the crossing pipe section according to the general failure probability and the probability correction factor;
and the third determining module is used for determining the failure grade of the crossing pipe section according to the failure probability of the crossing pipe section.
8. The failure level acquisition device for the oil and gas pipeline crossing segment according to claim 7, wherein the query module is specifically configured to:
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
if the crossing pipe section of the pipeline is a crossing pipe section, inquiring a pre-established probability correction system according to index items corresponding to hazard factors under five failure modes of the crossing pipe section, and acquiring correction factors corresponding to the hazard factors of the crossing pipe section;
wherein, the five failure modes of the cross pipe section comprise: third party failures, corrosion failures, design errors, mis-operations, and, fatigue and strength failures;
wherein, the third party destroys the hazard factors under the failure mode including: minimum burial depth, activity level, line marker, line patrol frequency, and bank and bottom revetment status;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and the corrosivity of the soil;
wherein, the design fault failure mode hazard factors include: crossing point selection, soil movement capacity, operation safety allowance, hazard identification, slope protection measures, pipe stabilizing measures and anticorrosive coating design;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction maloperation, and material preservation, maintenance work rules, staff training, monitoring measures and service life belonging to the category of maintenance maloperation;
among the hazards in the form of fatigue and strength failure include: the fatigue load, the suspension degree, the water flow speed and the flood-fighting water scouring capability which belong to the special factors of the pipeline crossing;
wherein the five failure modes across the pipe section include: third party failures, corrosion failures, design errors, mis-operations, and fatigue failures;
wherein, the third party destroys the hazard factors under the failure mode including: regional level, public propaganda and education, line patrol frequency and warning signs;
wherein, the hazard factors in the form of corrosion damage failure comprise: medium corrosivity belonging to the category of internal corrosion, internal coating or other measures, internal inspection of the pipeline and the residual wall thickness known from the internal inspection, and the condition of cathodic protection belonging to the category of external corrosion, the condition of the anticorrosive coating and atmospheric corrosivity;
wherein, the design fault failure mode hazard factors include: selection of crossing points, engineering types, operation safety margins, hazard identification, anticorrosive coating design and additional measures;
wherein, the hazard factors under the misoperation failure mode include: construction investigation, construction process control, weld nondestructive testing and completion acceptance belonging to the category of construction misoperation, and material preservation, maintenance operation rules, staff training, monitoring measures and service life major structures belonging to the category of maintenance misoperation;
wherein, the hazard factors in the form of fatigue failure comprise: internal and external loads.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the method for obtaining the failure level of the oil and gas pipeline crossing section according to any one of claims 1 to 6.
10. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the method for obtaining a failure level of a hydrocarbon pipeline crossing section according to any one of claims 1 to 6.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608419A (en) * | 2023-07-20 | 2023-08-18 | 山东特检科技有限公司 | Pipeline fatigue failure risk assessment method combined with vibration monitoring |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130047351A1 (en) * | 2011-08-31 | 2013-02-28 | Marc Breault | Pipeline crossing bridge |
| RU2013127040A (en) * | 2013-06-05 | 2014-12-10 | Общество с ограниченной ответственностью АП "ДИсСО" | METHOD FOR FORMING REPAIR AND PREVENTIVE WORK PROGRAMS ON HEAT NETWORK SITES |
| CN105809572A (en) * | 2016-03-01 | 2016-07-27 | 山东省水利勘测设计院 | Evaluation method for long distance water transporting system's safety based on the multiple factors at play of procedure objectives |
| CN106934138A (en) * | 2017-03-06 | 2017-07-07 | 中国石油大学(北京) | The submarine pipeline suspended span section Analysis of Vibration Characteristic method of interior gas transmission liquid two-phase slug flow |
| CN107742039A (en) * | 2017-10-31 | 2018-02-27 | 合肥通用机械研究院 | A kind of Submarine Pipeline Design method based on suspended span vortex-induced vibration fatigue life |
| CN107909240A (en) * | 2017-10-11 | 2018-04-13 | 中国石油天然气股份有限公司 | Pipeline failure method of determining probability and device |
| CN110163454A (en) * | 2018-02-07 | 2019-08-23 | 中石油昆仑燃气有限公司 | A kind of city gas pipeline network leak risk evaluating method and device |
-
2020
- 2020-05-06 CN CN202010373975.4A patent/CN113627697B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130047351A1 (en) * | 2011-08-31 | 2013-02-28 | Marc Breault | Pipeline crossing bridge |
| RU2013127040A (en) * | 2013-06-05 | 2014-12-10 | Общество с ограниченной ответственностью АП "ДИсСО" | METHOD FOR FORMING REPAIR AND PREVENTIVE WORK PROGRAMS ON HEAT NETWORK SITES |
| CN105809572A (en) * | 2016-03-01 | 2016-07-27 | 山东省水利勘测设计院 | Evaluation method for long distance water transporting system's safety based on the multiple factors at play of procedure objectives |
| CN106934138A (en) * | 2017-03-06 | 2017-07-07 | 中国石油大学(北京) | The submarine pipeline suspended span section Analysis of Vibration Characteristic method of interior gas transmission liquid two-phase slug flow |
| CN107909240A (en) * | 2017-10-11 | 2018-04-13 | 中国石油天然气股份有限公司 | Pipeline failure method of determining probability and device |
| CN107742039A (en) * | 2017-10-31 | 2018-02-27 | 合肥通用机械研究院 | A kind of Submarine Pipeline Design method based on suspended span vortex-induced vibration fatigue life |
| CN110163454A (en) * | 2018-02-07 | 2019-08-23 | 中石油昆仑燃气有限公司 | A kind of city gas pipeline network leak risk evaluating method and device |
Non-Patent Citations (5)
| Title |
|---|
| JUN LI ET AL.: "Calculation methods for the gas pipeline failure rate", 《JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING》, no. 174, 12 November 2018 (2018-11-12) * |
| 余建星, 孙大军: "原油管道跨越段的风险评估方法", 油气储运, no. 12, 25 December 2004 (2004-12-25) * |
| 喻建胜;张鹏;彭星煜;何莎;王文韬;万夫;: "在用油气管道斜拉索跨越体系检测评价研究", 中国测试, no. 01, 30 January 2009 (2009-01-30) * |
| 张哲;汪是洋;吕明晏;潘硕;: "穿越河流输油管道风险评估的模糊综合评判法", 石油规划设计, no. 05, 20 September 2012 (2012-09-20) * |
| 王泽滨: "穿越河流输油管道风险评价标准", 《重庆科技学院学报 （ 自然科学版 ）》, vol. 12, no. 1, 28 February 2010 (2010-02-28) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608419A (en) * | 2023-07-20 | 2023-08-18 | 山东特检科技有限公司 | Pipeline fatigue failure risk assessment method combined with vibration monitoring |
| CN116608419B (en) * | 2023-07-20 | 2023-11-03 | 山东特检科技有限公司 | Pipeline fatigue failure risk assessment method combined with vibration monitoring |
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