Method, device, equipment and medium for evaluating crude oil transportation pipeline system

Abstract

This application discloses an evaluation method, apparatus, equipment, and medium for crude oil transportation pipeline systems, relating to the field of crude oil transportation. The method includes: obtaining the actual value range of factors influencing corrosion rate, including four factors: temperature, pressure, flow rate, and sulfur content; simulating and measuring the theoretical maximum corrosion rate and average corrosion rate of the crude oil transportation pipeline system based on the actual value range; calculating the system corrosion rate of the crude oil transportation pipeline system based on the theoretical maximum corrosion rate and average corrosion rate; and outputting safety information of the crude oil transportation pipeline system based on the system corrosion rate. This application can obtain a system evaluation of crude oil transportation pipeline systems, avoiding overly one-sided evaluations, preventing corrosion damage to the pipeline system from crude oil, and ensuring the safe operation of the crude oil transportation pipeline system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of crude oil transportation, and in particular to a method and device for evaluating a crude oil transportation pipeline system, equipment and a medium. BACKGROUND

[0002] During the transportation of crude oil, the crude oil can cause corrosion to the crude oil transportation pipeline system (such as a pipe body, a heating furnace pipe, and a device instrument gasket), which affects the safety of the crude oil transportation pipeline system. In severe cases, it can cause crude oil leakage and serious safety accidents. Therefore, it is necessary to comprehensively evaluate the crude oil transportation pipeline system.

[0003] The related art calculates the hoop stress of the pipe body of the crude oil transportation pipeline system by the internal pressure of the pipe body, compares the hoop stress with the allowable stress, and when the hoop stress is less than the allowable stress, the crude oil transportation pipeline system has no operational safety risk.

[0004] However, the related art only evaluates the safety of the pipe body of the crude oil transportation pipeline system from the aspect of the hoop stress of the pipe body, and does not evaluate the safety of the crude oil transportation pipeline system from the entire system. SUMMARY

[0005] The embodiments of the present application provide a method and device for evaluating a crude oil transportation pipeline system, equipment and a medium, which lists the pipe body, the heating furnace pipe, and the device instrument gasket in the crude oil transportation pipeline system in the evaluation range, and evaluates the system corrosion rate of the crude oil transportation pipeline system from the perspective of the entire crude oil transportation pipeline system. The technical solution is as follows:

[0006] According to one aspect of the present application, a method for evaluating a crude oil transportation pipeline system is provided, which comprises:

[0007] obtaining an actual value range of a corrosion rate influencing factor, the corrosion rate influencing factor including four factors of temperature, pressure, flow rate, and sulfur content;

[0008] based on the actual value range, calculating a theoretical maximum corrosion rate and an average corrosion rate of the crude oil transportation pipeline system, the theoretical maximum corrosion rate including a pipe body theoretical maximum corrosion rate, a heating furnace pipe theoretical maximum corrosion rate, and a device instrument gasket theoretical maximum corrosion rate, and the average corrosion rate including a pipe body average corrosion rate, a heating furnace pipe average corrosion rate, and a device instrument gasket average corrosion rate;

[0009] based on the theoretical maximum corrosion rate and the average corrosion rate, simulating the system corrosion rate of the pipe body, the heating furnace pipe, and the device instrument gasket in the crude oil transportation pipeline system;

[0010] output safety information of the crude oil transportation pipeline system based on the system corrosion rate condition.

[0011] According to another aspect of the present application, there is provided an evaluation device for a crude oil transportation pipeline system, comprising:

[0012] an acquisition module configured to obtain actual value ranges of corrosion rate influencing factors, the corrosion rate influencing factors including temperature, pressure, flow rate and sulfur content;

[0013] a calculation module configured to calculate a theoretical maximum corrosion rate and an average corrosion rate of the crude oil transportation pipeline system based on the actual value ranges, the theoretical maximum corrosion rate including a pipe body theoretical maximum corrosion rate, a heating furnace pipe theoretical maximum corrosion rate and a device and instrument gasket theoretical maximum corrosion rate, the average corrosion rate including a pipe body average corrosion rate, a heating furnace pipe average corrosion rate and a device and instrument gasket average corrosion rate;

[0014] the calculation module is further configured to simulate measurement of system corrosion rate conditions of the pipe body, the heating furnace pipe and the device and instrument gasket in the crude oil transportation pipeline system based on the theoretical maximum corrosion rate and the average corrosion rate;

[0015] an evaluation module configured to evaluate safety of the crude oil transportation pipeline system based on the system corrosion rate condition.

[0016] Optionally, the calculation module is further configured to obtain pipe body corrosion conditions, heating furnace pipe corrosion conditions and device and instrument gasket corrosion conditions based on the theoretical maximum corrosion rate and the average corrosion rate.

[0017] Optionally, the calculation module is further configured to calculate the system corrosion rate condition based on the pipe body corrosion conditions, the heating furnace pipe corrosion conditions and the device and instrument gasket corrosion conditions.

[0018] Optionally, the calculation module is further configured to calculate a ratio of the pipe body average corrosion rate and the pipe body theoretical maximum corrosion rate to obtain the pipe body corrosion conditions.

[0019] Optionally, the calculation module is further configured to calculate a ratio of the heating furnace pipe average corrosion rate and the heating furnace pipe theoretical maximum corrosion rate to obtain the heating furnace pipe corrosion conditions.

[0020] Optionally, the calculation module is further configured to calculate a ratio of the device and instrument gasket average corrosion rate and the device and instrument gasket theoretical maximum corrosion rate to obtain the device and instrument gasket corrosion conditions.

[0021] Optionally, the computing module is further configured to, in a case where the crude oil transportation pipeline system is transported in the heating transportation mode, substitute the pipe body corrosion rate condition, the heating furnace pipe corrosion rate condition and the equipment instrument gasket corrosion rate condition into a first formula to calculate the system corrosion rate condition.

[0022] Optionally, the computing module is further configured to, in a case where the crude oil transportation pipeline system is transported in the non-heating transportation mode, substitute the pipe body corrosion rate condition and the equipment instrument gasket corrosion rate condition into a second formula to calculate the system corrosion rate condition; wherein the coefficients of the first formula and the second formula are different.

[0023] Optionally, the computing module is further configured to obtain an actual corrosion rate condition of the crude oil transportation pipeline system; compare the actual corrosion rate condition with the system corrosion rate condition; and correct the coefficients in the first formula and / or the second formula based on a comparison result.

[0024] Optionally, the computing module is further configured to obtain a first system corrosion rate condition based on the theoretical maximum corrosion rate; calculate a hoop stress of the crude oil transportation pipeline system based on a design internal pressure and an outer diameter of the crude oil transportation pipeline system; compare the hoop stress with an allowable stress to determine a second system corrosion rate condition of the crude oil transportation pipeline system; and obtain the first formula and / or the second formula based on the first system corrosion rate condition and the second system corrosion rate condition.

[0025] Optionally, the computing module is further configured to obtain the average corrosion rate based on the actual value range; obtain a limit value of the corrosion rate influencing factor based on the actual value range, the limit value belonging to the actual value range; and calculate the theoretical maximum corrosion rate based on the limit value.

[0026] According to another aspect of the present application, a computer device is provided, which comprises a processor and a memory, the memory storing at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, at least one program, code set or instruction set being loaded and executed by the processor to implement the evaluation method of the crude oil transportation pipeline system as described in the above aspect.

[0027] According to another aspect of the present application, a computer storage medium is provided, the computer readable storage medium storing at least one program code, the program code being loaded and executed by a processor to implement the evaluation method of the crude oil transportation pipeline system as described in the above aspect.

[0028] According to another aspect of the present application, a computer program product or computer program is provided, which comprises computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method for evaluating the crude oil transportation pipeline system according to the above aspect.

[0029] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0030] The theoretical maximum corrosion rate and average corrosion rate of the crude oil transportation pipeline system are determined according to the corrosion rate influencing factors, and the system corrosion rate of the crude oil transportation pipeline system is obtained, so as to evaluate the safety condition of the crude oil transportation pipeline system from the overall perspective. The system evaluation of the crude oil transportation pipeline system can be obtained, the evaluation of the crude oil transportation pipeline system is not too one-sided, the corrosion and damage of the crude oil to the transportation pipeline are prevented, and the safe operation of the crude oil transportation pipeline system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a structural schematic diagram of a crude oil transportation pipeline system provided by an exemplary embodiment of the present application;

[0033] Figure 2 is a flowchart of a method for evaluating a crude oil transportation pipeline system provided by an exemplary embodiment of the present application;

[0034] Figure 3 is a flowchart of a method for evaluating a crude oil transportation pipeline system provided by an exemplary embodiment of the present application;

[0035] Figure 4 is a flowchart of a method for obtaining a corrosion rate provided by an exemplary embodiment of the present application;

[0036] Figure 5 is a flowchart of a method for obtaining a first formula and a second formula provided by an exemplary embodiment of the present application;

[0037] Figure 6 is a structural schematic diagram of an evaluation device for a crude oil transportation pipeline system provided by an exemplary embodiment of the present application;

[0038] Figure 7 is a structural schematic diagram of a computer device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0039] For the purpose, technical solutions and advantages of the present application to be clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0040] In the present embodiment, the "long", "wide", "upper", "lower" are based on the length, width, upper and lower shown in the drawings.

[0041] Firstly, the terms involved in the embodiments of the present application are introduced:

[0042] hoop stress: when the inside of the cylindrical container bears pressure, the pipe diameter will slightly increase, so there is stress on the longitudinal cross section of the cylindrical container, the direction is along the circumferential direction, and the stress is hoop stress.

[0043] allowable stress: the maximum stress value that can be borne in the crude oil transportation pipeline system.

[0044] Figure 1 A structural schematic diagram of a crude oil transportation pipeline system provided by an exemplary embodiment of the present application is shown. The crude oil transportation pipeline system 100 comprises a pipe body 101, a furnace tube 102 and a gasket 103.

[0045] The pipe body 101 is the main part of the crude oil transportation pipeline system 100, and the pipe body 101 is a steel pipe. In a long-distance crude oil transportation pipeline system 100, the pipe body 101 is connected by multiple steel pipes, and the connection mode between the pipe bodies 101 includes at least one of a thread, welding and a flange.

[0046] The furnace tube 102 refers to a heating furnace tube. In the process of crude oil transportation, since part of the crude oil has large viscosity and poor flowability at normal temperature, the crude oil needs to be heated to improve the flowability of the crude oil, so as to facilitate the transportation of the crude oil.

[0047] The gasket 103 refers to a device instrument gasket. In the process of crude oil transportation, various indexes of the crude oil need to be monitored. The instrument and the pipe body 101 are sealed by the gasket 103. The gasket 103 is a plastic material, for example, the material of the gasket 103 is polytetrafluoroethylene. Exemplarily, the types of the instrument include at least one of a pipeline detector, a pressure gauge, a temperature sensor and a crack comprehensive detector.

[0048] Figure 2 A flow chart of a crude oil transportation pipeline system evaluation method provided by an exemplary embodiment of the present application is shown. The method is applied to the crude oil transportation pipeline system 100 shown. Figure 1 The method comprises the following steps:

[0049] In step 201, actual value ranges of corrosion rate influencing factors are obtained, the corrosion rate influencing factors including temperature, pressure, flow rate and sulfur content.

[0050] The corrosion rate influencing factors refer to various factors influencing the corrosion rate of the crude oil transportation pipeline system, and the corrosion rate influencing factors include temperature, pressure, flow rate and sulfur content.

[0051] Optionally, the corrosion rate influencing factors include at least one of temperature, pressure, flow rate and sulfur content.

[0052] In actual production and life, the corrosion rate influencing factors appear in the form of value ranges. For example, the temperature value range is 40-60°C, the pressure value range is 1-3 MPa, the flow rate value range is 0.5-2 m / s, and the sulfur content value range is 1-4%.

[0053] In step 202, based on the actual value ranges, the theoretical maximum corrosion rate and the average corrosion rate of the crude oil transportation pipeline system are simulated and measured, the theoretical maximum corrosion rate including the pipe body theoretical maximum corrosion rate, the heating furnace pipe theoretical maximum corrosion rate and the equipment instrument gasket theoretical maximum corrosion rate, and the average corrosion rate including the pipe body average corrosion rate, the heating furnace pipe average corrosion rate and the equipment instrument gasket average corrosion rate.

[0054] Optionally, the theoretical maximum corrosion rate includes at least one of the pipe body theoretical maximum corrosion rate, the heating furnace pipe theoretical maximum corrosion rate and the equipment instrument gasket theoretical maximum corrosion rate.

[0055] Optionally, the average corrosion rate includes at least one of the pipe body average corrosion rate, the heating furnace pipe average corrosion rate and the equipment instrument gasket average corrosion rate.

[0056] The theoretical maximum corrosion rate refers to the maximum corrosion rate that can be theoretically achieved within the actual value range of the corrosion rate influencing factors. For example, when the temperature value range is 40-60°C, the pressure value range is 1-3 MPa, the flow rate value range is 0.5-2 m / s, and the sulfur content value range is 1-4%, the technical personnel find that the corrosion rate is positively correlated with temperature, pressure, flow rate and sulfur content, and then the theoretical maximum corrosion rate is the corrosion rate corresponding to the temperature value of 60°C, the pressure value of 3 MPa, the flow rate value of 2 m / s and the sulfur content value of 4% in the corrosion rate influencing factors.

[0057] The average corrosion rate refers to the actual corrosion rate of the crude oil transportation pipeline system within the actual value range of the corrosion rate influencing factors. For example, when the temperature value range is 40-60°C, the pressure value range is 1-3 MPa, the flow rate value range is 0.5-2 m / s, and the sulfur content value range is 1-4%, the average corrosion rate of the crude oil transportation pipeline system is 0.2 mm / a (millimeter per year).

[0058] In step 203, the system corrosion rate condition of the crude oil transportation pipeline system is calculated based on the theoretical maximum corrosion rate and the average corrosion rate.

[0059] The system corrosion rate condition refers to the overall corrosion condition of the crude oil transportation pipeline system, which is evaluated using the corrosion rate and has a unit of mm / a.

[0060] In step 204, the safety information of the crude oil transportation pipeline system is output based on the system corrosion rate condition.

[0061] There are various methods for evaluation, for example, the evaluation of the crude oil transportation pipeline system is obtained by querying a table, or the evaluation of the crude oil transportation pipeline system is obtained according to the threshold of the system corrosion rate condition.

[0062] The safety information is used to represent the safety degree of the crude oil transportation pipeline system, and the safety information can be evaluated from multiple perspectives, for example, the corrosion resistance evaluation of the crude oil transportation pipeline system, the hoop stress evaluation of the crude oil transportation pipeline system, and the like.

[0063] For example, a table of metal corrosion rate conditions and corrosion resistance evaluations is listed, and a technician can refer to Table 1 to obtain the corrosion resistance evaluation of the crude oil transportation pipeline system according to the metal corrosion rate condition.

[0064] Table 1: Correspondence table of metal corrosion rate conditions and corrosion resistance evaluations

[0065] Level Metal corrosion rate case (mm / a) Corrosion resistance evaluation 1 <0.05 Excellent 2 0.05～0.5 Good 3 0.5～1.5 Usable, heavy corrosion 4 >1.5 Not applicable, severe corrosion

[0066] To sum up, the embodiment determines the theoretical maximum corrosion rate and the average corrosion rate of the crude oil transportation pipeline system through the corrosion rate influencing factors, and obtains the system corrosion rate condition of the crude oil transportation pipeline system, thereby evaluating the safety condition of the crude oil transportation pipeline system from a whole perspective. The system evaluation of the crude oil transportation pipeline system can be obtained, the evaluation of the crude oil transportation pipeline system is not too one-sided, the corrosion damage of the crude oil to the transportation pipeline is prevented, and the safe operation of the crude oil transportation pipeline system is ensured.

[0067] In the previous embodiment, the evaluation method of the crude oil transportation pipeline system is simply described, and the evaluation method of the crude oil transportation pipeline system is further described as follows, Figure 3A flow chart of a method for evaluating a crude oil transportation pipeline system according to an example embodiment of the present application is shown. The method is applied to Figure 1 In the crude oil transportation pipeline system 100 shown, the method comprises the following steps:

[0068] Step 301, obtaining actual value ranges of corrosion rate influencing factors.

[0069] Corrosion rate influencing factors refer to various factors that affect the corrosion rate of the crude oil transportation pipeline system. The corrosion rate influencing factors include temperature, pressure, flow rate, and sulfur content.

[0070] Optionally, the corrosion rate influencing factors include at least one of the four factors of temperature, pressure, flow rate, and sulfur content.

[0071] In actual production and life, the corrosion rate influencing factors appear in the form of value ranges. For example, the temperature value range is 40-60°C, the pressure value range is 1-3 MPa, the flow rate value range is 0.5-2 m / s, and the sulfur content value range is 1-4%.

[0072] Step 302, obtaining average corrosion rates based on the actual value ranges.

[0073] The average corrosion rates include the pipe body average corrosion rate, the heating furnace pipe average corrosion rate, and the equipment and instrument gasket average corrosion rate.

[0074] For example, when the temperature value range is 40-60°C, the pressure value range is 1-3 MPa, the flow rate value range is 0.5-2 m / s, and the sulfur content value range is 1-4%, the average values of the corrosion rate influencing factors are taken as the values of the corrosion rate influencing factors corresponding to the average corrosion rates, i.e., the temperature value is taken as 50°C, the pressure value is taken as 2 MPa, the flow rate value is taken as 1.25 m / s, and the sulfur content value is taken as 2.5%, and the corrosion rate under this condition is measured.

[0075] Step 303, obtaining limit values of the corrosion rate influencing factors based on the actual value ranges.

[0076] The limit value refers to the value of the corrosion rate influencing factor corresponding to the maximum corrosion rate that can theoretically be achieved within the actual value range of the corrosion rate influencing factor. For example, when the temperature value range is 40-60°C, the pressure value range is 1-3 MPa, the flow rate value range is 0.5-2 m / s, and the sulfur content value range is 1-4%, the limit value is temperature value of 60°C, pressure value of 3 MPa, flow rate value of 2 m / s, and sulfur content value of 4%.

[0077] For example, a method for obtaining limit values is given:

[0078] The pre-assumed temperature range is 40-60°C, the pressure range is 1-3 MPa, the flow rate range is 0.5-2 m / s, and the sulfur content range is 1-4%. A set of intermediate values is taken as working condition 1 (50°C, 2 MPa, 1 m / s, 2%) based on the actual value range of the above corrosion rate influencing factors.

[0079] 1. When the temperature changes, working conditions 2 (40°C, 2 MPa, 1 m / s, 2%), 3 (45°C, 2 MPa, 1 m / s, 2%), 4 (55°C, 2 MPa, 1 m / s, 2%), and 5 (60°C, 2 MPa, 1 m / s, 2%) are taken respectively to obtain their corrosion rates F2, F3, F4, and F5. By comparing F1, F2, F3, F4, and F5, the influence of temperature on corrosion rate is obtained. For example, F5>F4>F1>F3>F2 (the specific results are subject to experiments), the higher the temperature, the greater the corrosion rate, so 60°C is the temperature condition with the largest corrosion rate during the actual operation of the pipe body.

[0080] 2. When the pressure changes, working conditions 6 (50°C, 1 MPa, 1 m / s, 2%), 7 (50°C, 1.5 MPa, 1 m / s, 2%), 8 (50°C, 2.5 MPa, 1 m / s, 2%), and 9 (50°C, 3 MPa, 1 m / s, 2%) are taken respectively to obtain their corrosion rates F6, F7, F8, and F9. By comparing F1, F6, F7, F8, and F9, the influence of pressure on corrosion rate is obtained. For example, F9>F8>F1>F7>F6 (the specific results are subject to experiments), the higher the pressure, the greater the corrosion rate, so 3 MPa is the pressure condition with the largest corrosion rate during the actual operation of the pipe body.

[0081] 3. When the flow rate changes, working conditions 10 (50°C, 2 MPa, 0.5 m / s, 2%), 11 (50°C, 2 MPa, 1.5 m / s, 2%), and 12 (50°C, 2 MPa, 2 m / s, 2%) are taken respectively to obtain their corrosion rates F10, F11, and F12. By comparing F1, F10, F11, and F12, the influence of flow rate on corrosion rate is obtained. For example, F10>F1>F11>F12 (the specific results are subject to experiments), the lower the flow rate, the greater the corrosion rate, so 0.5 m / s is the flow rate condition with the largest corrosion rate during the actual operation of the pipe body.

[0082] 4. When the sulfur content changes, respectively, take the working condition 13 (50℃, 2MPa, 1m / s, 1%), working condition 14 (50℃, 2MPa, 1m / s, 3%), working condition 15 (50℃, 2MPa, 1m / s, 4%), obtain its corrosion rate F13, F14, F15. Compare F1, F13, F14, F15, obtain the influence law of flow rate on corrosion rate. For example, F15>F14>F1>F13 (the specific results are subject to the experiment), the higher the sulfur content, the greater the corrosion rate, so 4% is the sulfur content condition of the actual operation of the pipe body with the largest corrosion rate.

[0083] In summary, at the working condition 16 (60℃, 3MPa, 0.5m / s, 4%), the theoretical maximum corrosion rate F16 can be obtained. If F16>F1~F15, the above results are reasonable, and the limit value is (60℃, 3MPa, 0.5m / s, 4%), otherwise, the experiment is re-performed.

[0084] Step 304, based on the limit value, calculate the theoretical maximum corrosion rate.

[0085] The theoretical maximum corrosion rate includes the pipe body theoretical maximum corrosion rate, the heating furnace theoretical maximum corrosion rate and the equipment instrument gasket theoretical maximum corrosion rate.

[0086] Take the value of the corrosion rate influencing factor as the limit value to calculate the theoretical maximum corrosion rate.

[0087] Step 305, based on the theoretical maximum corrosion rate and the average corrosion rate, obtain the pipe body corrosion condition, the heating furnace pipe corrosion condition and the equipment instrument gasket corrosion condition.

[0088] By calculating the ratio of the pipe body average corrosion rate and the pipe body theoretical maximum corrosion rate, the pipe body corrosion condition is obtained. The pipe body corrosion rate condition refers to the pipe body corrosion condition of the crude oil transportation pipeline system, which is evaluated using the corrosion rate, and the unit is mm / a.

[0089] By calculating the ratio of the heating furnace pipe average corrosion rate and the heating furnace theoretical maximum corrosion rate, the heating furnace pipe corrosion condition is obtained. The heating furnace pipe corrosion rate condition refers to the heating furnace pipe corrosion condition of the crude oil transportation pipeline system, which is evaluated using the corrosion rate, and the unit is mm / a.

[0090] By calculating the ratio of the equipment instrument gasket average corrosion rate and the equipment instrument gasket theoretical maximum corrosion rate, the equipment instrument gasket corrosion condition is obtained. The equipment instrument gasket corrosion rate condition refers to the equipment instrument gasket corrosion condition of the crude oil transportation pipeline system, which is evaluated using the corrosion rate, and the unit is mm / a.

[0091] Exemplarily, the pipe body corrosion rate case, the heating furnace tube corrosion rate case and the equipment instrument gasket corrosion rate case are given as follows:

[0092]

[0093]

[0094]

[0095] Csystem= mCpipe+ nCfurnace+ pCgasket b Cpipeis the pipe body corrosion rate case, f Cfurnaceis the heating furnace tube corrosion rate case, and b Cgasketis the equipment instrument gasket corrosion rate case.

[0096] Step 306, judging whether the crude oil transportation pipeline system uses heating transportation mode.

[0097] When the crude oil transportation pipeline system uses heating transportation mode, step 307 is executed.

[0098] When the crude oil transportation pipeline system uses non-heating transportation mode, step 308 is executed.

[0099] Generally, whether the crude oil transportation pipeline system uses heating transportation mode is judged by the condensation point of the crude oil. If the condensation point of the crude oil is higher than the ground temperature, the crude oil transportation pipeline system uses heating transportation mode; if the condensation point of the crude oil is not higher than the ground temperature, the crude oil transportation pipeline system uses non-heating transportation mode.

[0100] Step 307, substituting the pipe body corrosion case, the heating furnace tube corrosion case and the equipment instrument gasket corrosion case into the first formula to calculate the system corrosion rate case.

[0101] The first formula is used to calculate the system corrosion rate case when the crude oil transportation pipeline system uses heating transportation mode. The first formula is as follows:

[0102] Csystem= mCpipe+ nCfurnace+ pCgasket all b f w

[0103] Csystem= mCpipe+ nCfurnace+ pCgasket all m, n and p are constant coefficients, m+n+p=1 and m>n>p, so m, n and p can also be considered as weight values. Exemplarily, one group of values of m, n and p is m=0.75, n=0.2 and p=0.05.

[0104] ​​​​Step 308, substituting the pipe body corrosion condition and the equipment instrument gasket corrosion condition into the second formula to calculate the system corrosion rate condition.

[0105] The second formula is used to calculate the system corrosion rate condition when the crude oil transportation pipeline system uses a non-heating transportation method. The second formula is as follows:

[0106] C all = sC b + tC w ;

[0107] In the second formula, there is no heating furnace tube corrosion rate condition because crude oil does not pass through the heating furnace tube when using a non-heating method for transportation, and s and t are constant coefficients, s + t = 1 and s > t, so s and t can also be considered as weight values. For example, one set of values of s and t is s = 0.90 and t = 0.10.

[0108] The coefficients of the first formula and the second formula are different.

[0109] Step 309, based on the system corrosion rate condition, output the safety information of the crude oil transportation pipeline system.

[0110] There are various methods for evaluation, for example, by querying a table to obtain the evaluation of the crude oil transportation pipeline system, or according to the threshold value of the system corrosion rate condition to obtain the evaluation of the crude oil transportation pipeline system.

[0111] Step 310, obtain the real corrosion rate condition of the crude oil transportation pipeline system.

[0112] The real corrosion rate condition refers to the corrosion rate of the crude oil transportation pipeline system in actual use. For example, the reduction in the wall thickness of the crude oil transportation pipeline system within one year can be directly used as the real corrosion rate condition.

[0113] For example, the real corrosion rate condition can be evaluated according to Table 1. For example, when the real corrosion rate condition is 0.1 mm / a, the corrosion resistance of the crude oil transportation pipeline system is good.

[0114] Step 311, compare the real corrosion rate condition and the system corrosion rate condition.

[0115] The comparison between the real corrosion rate and the system corrosion rate is used to determine whether the system corrosion rate matches the real corrosion rate. The matching criterion can be whether the absolute value of the difference between the system corrosion rate and the real corrosion rate is within a preset error range. For example, the real corrosion rate is 0.20 mm / a, the preset error is 5% of the real corrosion rate, i.e., the preset error is 0.01 mm / a. When the system corrosion rate is 0.21 mm / a, the difference between the two is 0.01 mm / a, which meets the preset error. When the system corrosion rate is 0.25 mm / a, the difference between the two is 0.05 mm / a, which does not meet the preset error.

[0116] At step 312, the coefficients in the first formula and / or the second formula are corrected based on the comparison result.

[0117] The comparison result is analyzed, and the coefficients in the first formula and / or the second formula are corrected so that the system corrosion rate obtained by the corrected first formula and / or the second formula meets the actual corrosion rate.

[0118] In summary, the theoretical maximum corrosion rate and the average corrosion rate of the crude oil transportation pipeline system are determined by the corrosion rate influencing factors in the embodiment, and the system corrosion rate of the crude oil transportation pipeline system is obtained, so that the safety condition of the crude oil transportation pipeline system is evaluated from the overall perspective. The system evaluation of the crude oil transportation pipeline system can be obtained, the evaluation of the crude oil transportation pipeline system is not too one-sided, the corrosion and damage of the crude oil to the pipeline are prevented, and the safe operation of the crude oil transportation pipeline system is ensured. The first formula and the second formula are given as quantitative indexes, and the corrosion condition of the crude oil transportation pipeline system can be quantitatively analyzed.

[0119] An example method for obtaining the average corrosion rate is given. Figure 4 A flowchart of the corrosion rate obtaining method provided by an example embodiment of the present application is shown, and the method includes the following steps:

[0120] At step 401, the to-be-measured value of the corrosion rate influencing factor is obtained.

[0121] The corrosion rate influencing factor refers to various factors that affect the corrosion rate of the crude oil transportation pipeline system. The corrosion rate influencing factor includes temperature, pressure, flow rate, and sulfur content.

[0122] Optionally, the corrosion rate influencing factor includes at least one of the four factors of temperature, pressure, flow rate, and sulfur content.

[0123] The to-be-measured value refers to the value of the corrosion rate influencing factor used for corrosion rate measurement.

[0124] Step 402, obtaining the mass, density and total area of the pipe sample.

[0125] The pipe sample is a part of the pipeline of the crude oil transportation pipeline system. The pipe sample can be in multiple parts, for example, three parts or five parts.

[0126] Step 403, completely immersing the pipe sample in the crude oil sample.

[0127] The pipe sample can be completely immersed in the crude oil sample, or the pipe sample can be placed in a container and then poured into the crude oil sample.

[0128] The crude oil sample refers to a part of the crude oil in the crude oil transportation pipeline system.

[0129] Step 404, controlling the environmental variables to be the same as the to-be-tested values.

[0130] For example, the temperature, pressure and flow rate are controlled to be the same as the to-be-tested values.

[0131] Step 405, after a predetermined time, taking out the corroded pipe sample.

[0132] The predetermined time is set by the technician. For example, the predetermined time is 24 hours or 120 hours.

[0133] Step 406, obtaining the mass of the corroded pipe sample.

[0134] The mass of the corroded pipe sample is weighed.

[0135] Step 407, calculating the corrosion rate.

[0136] The formula for calculating the corrosion rate is as follows:

[0137]

[0138] Where R is the corrosion rate, M is the mass of the pipe sample before corrosion, M1 is the mass of the pipe sample after corrosion, S is the total area of the pipe sample, T is the predetermined time, and D is the density of the pipe sample.

[0139] In summary, the embodiment provides a method for measuring the corrosion rate, which can accurately test and determine the corrosion rate.

[0140] In this application, the obtaining of the first formula and the second formula is part of the content, Figure 5 A flowchart of the method for obtaining the first formula and the second formula provided by an exemplary embodiment of the present application is shown, and the method comprises the following steps:

[0141] Step 501, based on the theoretical maximum corrosion rate, obtaining the first system corrosion rate.

[0142] The first system corrosion condition is the corrosion condition of the crude oil transportation pipeline system under the condition of the theoretical maximum corrosion rate. For example, when the theoretical maximum corrosion rate is 0.2 mm / a, it can be known from Table 1 that the corrosion resistance is good.

[0143] In step 502, the hoop stress of the crude oil transportation pipeline system is calculated based on the design internal pressure and the outer diameter of the crude oil transportation pipeline system.

[0144] In step 501, the first system corrosion condition can only describe the corrosion condition of the crude oil transportation pipeline system and preliminarily estimate the safety of the crude oil transportation pipeline system. Therefore, the hoop stress of the crude oil transportation pipeline system needs to be calculated and checked.

[0145] On the one hand, the hoop stress of the crude oil transportation pipeline system can be calculated based on the design internal pressure and the outer diameter of the crude oil transportation pipeline system. The formula is as follows:

[0146] [σ]=KΦσ s ;

[0147]

[0148]

[0149] Wherein, [σ] is the allowable stress, K is the design coefficient, Φ is the weld coefficient, σ s is the minimum yield coefficient, σ h is the hoop stress, p is the allowable internal pressure of the pipe body, D is the outer diameter of the pipe body, δ is the theoretical pipe wall thickness, and p1 is the actual internal pressure of the pipe body.

[0150] On the other hand, the hoop stress and the pipe body wall thickness of the crude oil transportation pipeline system can also be inferred by the transportation life. According to Table 2, the relationship between the transportation life and the hoop stress can be obtained.

[0151] Table 2 Hoop stress changes with transportation life

[0152] Transportation life (a) Wall thickness (mm) Hoop stress (MPa) 0 13 195.38 1 12.3 202.25 2 11.6 211.62 3 10.4 230.21 4 9.7 269.76 5 8.8 302.86

[0153] Optionally, the hoop stress in Table 2 is checked using the calculated hoop stress.

[0154] In step 503, the hoop stress and the allowable stress are compared to determine the second system corrosion rate condition of the crude oil transportation pipeline system.

[0155] The hoop stress should be less than the allowable stress. When the hoop stress is less than the allowable stress, the corrosion resistance of the crude oil transportation pipeline system is good; when the hoop stress is not less than the allowable stress, the corrosion of the crude oil transportation pipeline system is heavy and cannot be used.

[0156] In step 504, the first formula and / or the second formula are obtained based on the first system corrosion rate condition and the second system corrosion rate condition.

[0157] Based on the first system corrosion rate condition and the second system corrosion rate condition, the coefficients in the first formula and / or the second formula are estimated so that the first formula and / or the second formula can simultaneously satisfy the standard of the hoop stress and the standard of the metal corrosion rate condition, that is, the system corrosion rate condition calculated by the first formula and / or the second formula satisfies both the hoop stress less than the allowable stress and the corrosion resistance evaluation of the metal corrosion rate condition.

[0158] For example, the first formula and the second formula are as follows:

[0159] C all = 0.75C b + 0.2C f + 0.05C w ;

[0160] C all = 0.9C b + 0.1C w .

[0161] In summary, the embodiment takes both the hoop stress and the metal corrosion rate condition into consideration, and ensures the correctness of the system corrosion rate condition.

[0162] The following is an apparatus embodiment of the present application. For details not described in the apparatus embodiment, reference can be made to the corresponding description in the above method embodiment, which will not be described herein.

[0163] Figure 6 A structure diagram of an evaluation device of a crude oil transportation pipeline system provided by an example embodiment of the present application is shown. The device can be realized as all or part of a computer device through software, hardware or a combination of both. The device 600 includes:

[0164] An acquisition module 601 is configured to obtain an actual value range of a corrosion rate influencing factor, the corrosion rate influencing factor including four factors of temperature, pressure, flow rate and sulfur content.

[0165] A calculation module 602 is configured to simulate and measure a theoretical maximum corrosion rate and an average corrosion rate of the crude oil transportation pipeline system based on the actual value range, the theoretical maximum corrosion rate including a pipe body theoretical maximum corrosion rate, a heating furnace pipe theoretical maximum corrosion rate and a device and instrument gasket theoretical maximum corrosion rate, and the average corrosion rate including a pipe body average corrosion rate, a heating furnace pipe average corrosion rate and a device and instrument gasket average corrosion rate.

[0166] The calculation module 602 is further configured to calculate a system corrosion rate condition of the crude oil transportation pipeline system based on the theoretical maximum corrosion rate and the average corrosion rate.

[0167] The evaluation module 603 is configured to output safety information of the crude oil transportation pipeline system based on the system corrosion rate condition.

[0168] Optionally, the calculation module 602 is further configured to obtain a pipe body corrosion condition, a heating furnace pipe corrosion condition and a device and instrument gasket corrosion condition based on the theoretical maximum corrosion rate and the average corrosion rate.

[0169] Optionally, the calculation module 602 is further configured to calculate the system corrosion rate condition based on the pipe body corrosion condition, the heating furnace pipe corrosion condition and the device and instrument gasket corrosion condition.

[0170] Optionally, the calculation module 602 is further configured to obtain the pipe body corrosion condition by calculating a ratio of the pipe body average corrosion rate to the pipe body theoretical maximum corrosion rate.

[0171] Optionally, the calculation module 602 is further configured to obtain the heating furnace pipe corrosion condition by calculating a ratio of the heating furnace pipe average corrosion rate to the heating furnace pipe theoretical maximum corrosion rate.

[0172] Optionally, the calculation module 602 is further configured to obtain the device and instrument gasket corrosion condition by calculating a ratio of the device and instrument gasket average corrosion rate to the device and instrument gasket theoretical maximum corrosion rate.

[0173] Optionally, the calculation module 602 is further configured to, in a case where the crude oil transportation pipeline system is transported by using the heating transportation mode, substitute the pipe body corrosion rate condition, the heating furnace pipe corrosion rate condition and the device and instrument gasket corrosion rate condition into a first formula to calculate the system corrosion rate condition.

[0174] Optionally, the calculation module 602 is further configured to, in a case where the crude oil transportation pipeline system is transported by using the non-heating transportation mode, substitute the pipe body corrosion rate condition and the device and instrument gasket corrosion rate condition into a second formula to calculate the system corrosion rate condition; wherein coefficients of the first formula and the second formula are different.

[0175] Optionally, the calculation module 602 is further configured to obtain an actual corrosion rate condition of the crude oil transportation pipeline system; compare the actual corrosion rate condition with the system corrosion rate condition; and correct the coefficients in the first formula and / or the second formula based on a comparison result.

[0176] Optionally, the computing module 602 is further configured to obtain a first system corrosion rate condition based on the theoretical maximum corrosion rate, calculate a hoop stress of the crude oil transportation pipeline system based on a design internal pressure and an outer diameter of the crude oil transportation pipeline system, compare the hoop stress with an allowable stress to determine a second system corrosion rate condition of the crude oil transportation pipeline system, and obtain the first formula and / or the second formula based on the first system corrosion rate condition and the second system corrosion rate condition.

[0177] Optionally, the computing module 602 is further configured to obtain the average corrosion rate based on the actual value range, obtain a limit value of the corrosion rate influencing factor based on the actual value range, the limit value belonging to the actual value range, and calculate the theoretical maximum corrosion rate based on the limit value.

[0178] In summary, the embodiment determines the theoretical maximum corrosion rate and the average corrosion rate of the crude oil transportation pipeline system based on the corrosion rate influencing factor, and obtains the system corrosion rate condition of the crude oil transportation pipeline system to evaluate the safety condition of the crude oil transportation pipeline system from a whole perspective. The system evaluation of the crude oil transportation pipeline system can be obtained to avoid one-sided evaluation of the crude oil transportation pipeline system, prevent corrosion and damage of the crude oil to the pipeline, and ensure safe operation of the crude oil transportation pipeline system.

[0179] Figure 7 FIG. 7 is a structural schematic diagram of a computer device according to an embodiment of the present application. Specifically, the computer device 700 includes a central processing unit (CPU) 701, a system memory 704 including a random access memory (RAM) 702 and a read-only memory (ROM) 703, and a system bus 705 connecting the system memory 704 and the central processing unit 701. The computer device 700 further includes a basic input / output system (I / O system) 706 helping to transfer information between various devices in the computer, and a mass storage device 707 for storing an operating system 713, application programs 714 and other program modules 715.

[0180] The basic input / output system 706 includes the display 708 for displaying information and input devices 709, such as a mouse, keyboard, or electronic stylus, for inputting information. Both the display 708 and input devices 709 are connected to the central processing unit 701 through the input / output controller 710, which is connected to the system bus 705. The basic input / output system 706 can also include the input / output controller 710 for receiving and processing input from a number of other devices, including a keyboard, mouse, or electronic stylus. Similarly, the input / output controller 710 provides output to the display screen, a printer, or other type of output device.

[0181] The mass storage device 707 is connected to the central processing unit 701 through a mass storage controller (not shown), which is connected to the system bus 705. The mass storage device 707 and its associated computer readable media provide non-volatile storage for the computer device 700. That is, the mass storage device 707 can include a computer readable medium (not shown) such as a hard disk or a compact disc read-only memory (CD-ROM) drive.

[0182] Without loss of generality, computer readable media can include computer storage media and communication media. Computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other solid state memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Computer storage media would not, however, include communication media including wired or wireless signaling media that transmit computer readable instructions by tansitory signals, such as carried by carrier waves, electromagnetic signals, or other propagating electromagnetic waves. The system memory 704 and mass storage device 707 described above can collectively be referred to as memory.

[0183] According to various embodiments of the present application, the computer device 700 can also operate in connection with a remote computer through a network, such as the Internet. That is, the computer device 700 can connect to the network 712 through the network interface unit 711 connected to the system bus 705, or can be connected to other types of networks or remote computer systems (not shown) using the network interface unit 711.

[0184] According to another aspect of the present application, a computer storage medium is also provided, and the computer readable storage medium stores at least one program code, the program code is loaded and executed by a processor to implement the evaluation method of the crude oil transportation pipeline system as described above.

[0185] According to another aspect of the present application, a computer program product or computer program is also provided, and the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the evaluation method of the crude oil transportation pipeline system as described above.

[0186] It should be understood that "multiple" referred to herein means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0187] It can be understood by those skilled in the art that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or can be instructed by a program to complete the relevant hardware, and the program can be stored in a computer readable storage medium. The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0188] The above only describes the preferred embodiments of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of evaluating a crude oil transportation pipeline system, characterized by, The method comprises: obtaining actual value ranges of corrosion rate influencing factors, the corrosion rate influencing factors comprising temperature, pressure, flow rate and sulfur content; based on the actual value ranges, simulating measurement of theoretical maximum corrosion rates and average corrosion rates of the crude oil transportation pipeline system, the theoretical maximum corrosion rates comprising pipe body theoretical maximum corrosion rates, heating furnace pipe theoretical maximum corrosion rates and equipment and instrument gasket theoretical maximum corrosion rates, the average corrosion rates comprising pipe body average corrosion rates, heating furnace pipe average corrosion rates and equipment and instrument gasket average corrosion rates; based on the theoretical maximum corrosion rates and the average corrosion rates, calculating system corrosion rate conditions of the crude oil transportation pipeline system; based on the system corrosion rate conditions, outputting safety information of the crude oil transportation pipeline system; the calculation of the system corrosion rate conditions based on the theoretical maximum corrosion rates and the average corrosion rates comprises: based on the theoretical maximum corrosion rates and the average corrosion rates, obtaining pipe body corrosion conditions, heating furnace pipe corrosion conditions and equipment and instrument gasket corrosion conditions; based on the pipe body corrosion conditions, the heating furnace pipe corrosion conditions and the equipment and instrument gasket corrosion conditions, calculating the system corrosion rate conditions; the calculation of the pipe body corrosion conditions, the heating furnace pipe corrosion conditions and the equipment and instrument gasket corrosion conditions based on the theoretical maximum corrosion rates and the average corrosion rates comprises: calculating a ratio of the pipe body average corrosion rates to the pipe body theoretical maximum corrosion rates to obtain the pipe body corrosion conditions; calculating a ratio of the heating furnace pipe average corrosion rates to the heating furnace pipe theoretical maximum corrosion rates to obtain the heating furnace pipe corrosion conditions; calculating a ratio of the equipment and instrument gasket average corrosion rates to the equipment and instrument gasket theoretical maximum corrosion rates to obtain the equipment and instrument gasket corrosion conditions, the corrosion rate influencing factors corresponding to the average corrosion rates being average values of the corrosion rate influencing factors.

2. The method of claim 1, wherein, the transportation mode of the crude oil transportation pipeline system comprises heating transportation and non-heating transportation; the calculation of the system corrosion rate conditions based on the pipe body corrosion conditions, the heating furnace pipe corrosion conditions and the equipment and instrument gasket corrosion conditions comprises: in a case where the crude oil transportation pipeline system uses the heating transportation mode for transportation, substituting the pipe body corrosion rate conditions, the heating furnace pipe corrosion rate conditions and the equipment and instrument gasket corrosion rate conditions into a first formula to calculate the system corrosion rate conditions; in a case where the crude oil transportation pipeline system uses the non-heating transportation mode for transportation, substituting the pipe body corrosion rate conditions and the equipment and instrument gasket corrosion rate conditions into a second formula to calculate the system corrosion rate conditions; wherein coefficients of the first formula and the second formula are different.

3. The method of claim 2, wherein, the method further comprises: obtaining real corrosion rate conditions of the crude oil transportation pipeline system; comparing the real corrosion rate conditions with the system corrosion rate conditions; correct the coefficients in the first formula and / or the second formula based on the comparison result.

4. The method of claim 2, wherein, Before the calculating the system corrosion rate condition of the crude oil transportation pipeline system based on the theoretical maximum corrosion rate and the average corrosion rate, further comprising: obtaining a first system corrosion rate condition based on the theoretical maximum corrosion rate; calculating a hoop stress of the crude oil transportation pipeline system based on a design internal pressure and an outer diameter of the crude oil transportation pipeline system; comparing the hoop stress with an allowable stress to determine a second system corrosion rate condition of the crude oil transportation pipeline system; obtaining the first formula and / or the second formula based on the first system corrosion rate condition and the second system corrosion rate condition.

5. The method according to any one of claims 1 to 2, characterized in that, The calculating the average corrosion rate and the theoretical maximum corrosion rate of the crude oil transportation pipeline system based on the actual value range of the pipeline corrosion rate influencing factor, comprising: obtaining the average corrosion rate based on the actual value range; obtaining a limit value of the corrosion rate influencing factor based on the actual value range, the limit value belonging to the actual value range; calculating the theoretical maximum corrosion rate based on the limit value.

6. An evaluation device for a crude oil transportation pipeline system, characterized by The device comprises: an obtaining module, configured to obtain an actual value range of a corrosion rate influencing factor, the corrosion rate influencing factor comprising four factors of temperature, pressure, flow rate and sulfur content; a calculating module, configured to simulate measurement of a theoretical maximum corrosion rate and an average corrosion rate of the crude oil transportation pipeline system based on the actual value range, the theoretical maximum corrosion rate comprising a pipe body theoretical maximum corrosion rate, a heating furnace pipe theoretical maximum corrosion rate and a device and instrument gasket theoretical maximum corrosion rate, the average corrosion rate comprising a pipe body average corrosion rate, a heating furnace pipe average corrosion rate and a device and instrument gasket average corrosion rate; the calculating module is further configured to calculate a system corrosion rate condition of the pipe body, the heating furnace pipe and the device and instrument gasket in the crude oil transportation pipeline system based on the theoretical maximum corrosion rate and the average corrosion rate; an evaluating module, configured to output safety information of the crude oil transportation pipeline system based on the system corrosion rate condition; the calculating the system corrosion rate condition of the crude oil transportation pipeline system based on the theoretical maximum corrosion rate and the average corrosion rate, comprising: obtaining a pipe body corrosion condition, a heating furnace pipe corrosion condition and a device and instrument gasket corrosion condition based on the theoretical maximum corrosion rate and the average corrosion rate; calculating the system corrosion rate condition based on the pipe body corrosion condition, the heating furnace pipe corrosion condition and the device and instrument gasket corrosion condition; the obtaining the pipe body corrosion condition, the heating furnace pipe corrosion condition and the device and instrument gasket corrosion condition based on the theoretical maximum corrosion rate and the average corrosion rate, comprising: calculating a ratio of the pipe body average corrosion rate and the pipe body theoretical maximum corrosion rate to obtain the pipe body corrosion condition; calculating a ratio of the heating furnace pipe average corrosion rate and the heating furnace pipe theoretical maximum corrosion rate to obtain the heating furnace pipe corrosion condition; and calculating a ratio of the device and instrument gasket average corrosion rate and the device and instrument gasket theoretical maximum corrosion rate to obtain the device and instrument gasket corrosion condition. The ratio of the average corrosion rate of the equipment gasket and the theoretical maximum corrosion rate of the equipment gasket is calculated to obtain the corrosion condition of the equipment gasket, and the value of the corrosion rate influencing factor corresponding to the average corrosion rate is the average value of each corrosion rate influencing factor.

7. A computer device, comprising: The computer device comprises a processor and a memory, and the memory stores at least one instruction, at least one program, a code set or an instruction set, which is loaded and executed by the processor to realize the evaluation method of the crude oil transportation pipeline system according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores at least one program code, which is loaded and executed by the processor to realize the evaluation method of the crude oil transportation pipeline system according to any one of claims 1 to 5.

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