Engineering analysis method and system for drilling solid waste treatment

Abstract

The invention belongs to the technical field of oil and gas field drilling environment protection in the petroleum industry, and discloses a drilling solid waste treatment engineering analysis method and system, and the method comprises the steps: obtaining a plurality of basic elements of a drilling solid waste treatment engineering; obtaining data of each basic element, and constructing a comparison matrix to obtain a weight of each basic element; obtaining a quantitative membership function of each basic element; and based on the weights and the quantitative membership functions, analyzing each basic element of the plurality of drilling solid waste treatment projects and obtaining a final score. According to the method and the system, evaluation and research on the drilling waste treatment and recycling technology of different types of mud systems can be realized, and the problem that the advancement and operability of the drilling solid waste treatment and recycling technology cannot be comprehensively and objectively evaluated in drilling solid waste treatment technology engineering in the prior art is solved; according to the method, the basic elements of the drilling solid waste treatment project are quantified, and evaluation is more visual and accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas field drilling environment protection in the petroleum industry, and in particular relates to an analysis method and system for drilling solid waste treatment engineering. Background Art

[0002] Environmental technology evaluation is generally divided into two categories: single technology evaluation and multi-technology screening evaluation. Single technology evaluation refers to the evaluation of the advancement, effectiveness, reliability, and economic efficiency of technology performance, application prospects, scope of application, and market risks of the technology from the aspects of equipment, process units, and processes involved in a single technology. Single technology evaluation can be divided into the evaluation of existing mature technologies and innovative technologies. Multi-technology screening evaluation is aimed at multiple technologies (including equipment, process units, and processes) in the same application field or the same technical principle. On the basis of comprehensive evaluation or verification evaluation of single technologies, an evaluation expert committee (evaluation expert group) is organized or commissioned according to application or technical fields to screen and evaluate their technical and economic performance. Multi-technology screening evaluation can be divided into advanced technology catalog screening and technical solution comparison according to the purpose of application, such as the best practical technology, determination of emission reduction solutions, and selection of feasible solutions.

[0003] The evaluation of oilfield solid waste treatment and disposal technology is an application branch of environmental protection technology evaluation. Environmental protection technology evaluation is to obtain objective data according to certain procedures and methods, and use statistical methods to evaluate, verify or demonstrate the level, reliability, environmental and economic benefits and risks of environmental protection technology. Usually, field visits, expert consultations, information inquiries, social surveys and other methods are adopted to collect information and materials required for evaluation. On the basis of qualitative and quantitative analysis, analysis and comprehensive evaluation are carried out to form an evaluation report. Whether the evaluation work is effective depends to a large extent on whether the evaluation standards and evaluation methods are reasonable. For the same technology, different evaluation standards and evaluation methods may produce different results. To determine the evaluation standards and evaluation methods, we must first consider the purpose of the evaluation, and then, based on the purpose of the evaluation and the characteristics of different technologies, establish an indicator system and evaluation method on the basis of fully considering the particularity of the discipline, so as to achieve the purpose of correct evaluation. In the existing drilling solid waste treatment technology engineering, it is impossible to comprehensively and objectively evaluate the advancement and operability of drilling solid waste treatment and resource utilization technology. Summary of the invention

[0004] In order to solve at least one problem in the background technology, the present invention proposes a method and system for drilling solid waste treatment engineering analysis.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for analyzing drilling solid waste treatment engineering, comprising the following steps:

[0007] Obtain several basic elements of drilling solid waste treatment projects;

[0008] Obtain the data of each basic element, construct a comparison matrix, and obtain the weight of each basic element;

[0009] Obtaining the quantitative membership function of each basic element;

[0010] Based on weights and quantitative membership functions, each basic element of several drilling solid waste treatment projects is analyzed and the final scores are obtained.

[0011] Preferably, several basic elements of drilling solid waste treatment engineering are obtained through hierarchical analysis method.

[0012] Preferably, the basic elements include technical elements, economic elements and environmental safety elements.

[0013] Preferably, the technical factors include processing scale, annual operating time, dosage of reagents, number of high-temperature and high-pressure devices and flammable and explosive risks.

[0014] Preferably, the economic factors include processing operating costs, processing equipment floor space and resource recovery benefits.

[0015] Preferably, the environmental safety factors include the solid waste volume reduction rate, the oil content in the treated residue, the COD content, the heavy metal content, and the amount of wastewater and waste gas generated and treated.

[0016] Preferably, obtaining the weight of each basic element comprises the following steps:

[0017] The weight vector of each basic element is calculated by MATLAB software;

[0018] The weight of each basic element is corresponded by the weight vector;

[0019] Rank the weight of each basic element.

[0020] Preferably, obtaining the quantitative membership function of each basic element comprises the following steps:

[0021] Setting the upper limit value B and lower limit value A of the basic parameters of each basic element;

[0022] Calculate according to μ = (XA) / (BA), where X is the actual value of the basic parameter;

[0023] The basic elements are assigned scores based on the calculation results of μ.

[0024] Preferably, the final score is the sum of the product of the score of each basic element and the corresponding weight of each basic element.

[0025] Preferably, based on the quantitative membership function, each basic element of the drilling solid waste treatment project is analyzed to obtain a final score, including the following steps:

[0026] Calculate the scores of each basic element in several drilling solid waste treatment projects through quantitative membership functions, and build a score database;

[0027] Select a basic element as the target element;

[0028] Extract all value sets and target value ranges of target elements from the score database;

[0029] The score level of the target element is established based on the value set and the target value range.

[0030] A drilling solid waste treatment engineering analysis system, used for the above-mentioned drilling solid waste treatment engineering analysis method, comprising:

[0031] Initial unit, used to obtain several basic elements of drilling solid waste treatment projects;

[0032] A calculation unit is used to obtain the data of each basic element, construct a comparison matrix, and calculate the weight of each basic element;

[0033] Building blocks for obtaining quantitative membership functions for each basic element;

[0034] The analysis unit is used to analyze each basic element of several drilling solid waste treatment projects based on weights and quantitative membership functions and obtain final scores.

[0035] Preferably, several basic elements of the drilling solid waste treatment project are obtained based on the hierarchical analysis valve.

[0036] Preferably, the basic elements include technical elements, economic elements and environmental safety elements.

[0037] Preferably, the calculation unit comprises:

[0038] A calculation module, used for calculating the weight vector of each basic element through MATLAB software;

[0039] A corresponding module, used to correspond the weight of each basic element through a weight vector;

[0040] The sorting module is used to sort the weight of each basic element.

[0041] Preferably, the analysis unit comprises:

[0042] A construction module is used to calculate the score of each basic element in several drilling solid waste treatment projects through quantitative membership functions and to construct a score database;

[0043] A selection module is used to select a basic element as a target element;

[0044] An extraction module is used to extract all value sets and target value ranges of target elements from the score database;

[0045] The grading module is used to establish the score grade of the target element based on the value set and the target value range.

[0046] Beneficial effects of the present invention:

[0047] 1. The method and system of the present invention can realize the evaluation and research of drilling waste treatment and resource utilization technologies of different types of mud systems, solving the problem that the existing drilling solid waste treatment technology projects cannot comprehensively and objectively evaluate the advancement and operability of drilling solid waste treatment and resource utilization technologies;

[0048] 2. The present invention extracts the basic elements of the drilling solid waste treatment project, analyzes the basic elements, assigns values ​​to each basic element through a specific function, and uses data to illustrate the degree of influence of each basic element on the drilling solid waste treatment project, thereby quantifying the basic elements of the drilling solid waste treatment project and making the evaluation more intuitive and accurate.

[0049] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A flow chart of a method for analyzing drilling solid waste treatment engineering according to the present invention is shown;

[0052] Figure 2 The structure diagram of a drilling solid waste treatment engineering analysis system of the present invention is shown. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] A method for analyzing drilling solid waste treatment engineering, such as Figure 1 As shown, the following steps are included:

[0055] S1: Obtain several basic elements of drilling solid waste treatment projects;

[0056] S2: Obtain the data of each basic element, construct a comparison matrix, and calculate the weight of each basic element;

[0057] S3: Obtaining the quantitative membership function of each basic element;

[0058] S4: Based on weights and quantitative membership functions, each basic element of several drilling solid waste treatment projects is analyzed and the final score is obtained.

[0059] It should be noted that in step S1, several basic elements of drilling solid waste treatment projects are generally obtained through the hierarchical analysis method. In step S2, after constructing the comparison matrix, the mathematical software MATLAB is used to calculate the respective weight vectors. The uniform weight vectors are the weights of the corresponding indicators, and the total ranking of the indicator weights is calculated. In step S3, the ascending semi-trapezoidal expression commonly used in the quantitative factor membership function is used.

[0060] Furthermore, in step S2, the following steps are included:

[0061] S201: Obtain the weight vector of each basic element by calculating through MATLAB software;

[0062] S202: Corresponding the weight of each basic element through a weight vector;

[0063] S203: Sort the weight of each basic element.

[0064] Furthermore, in steps S1-S4, the basic elements include technical elements, economic elements and environmental safety elements, and the reduction, harmlessness and resource utilization levels of the technology are taken into consideration. The technical elements include the treatment scale, annual operation time, dosage of reagents, number of high-temperature and high-pressure devices and flammable and explosive risks; the economic elements include treatment operation costs, area occupied by treatment devices and resource recovery benefits; the environmental safety elements include the solid waste volume reduction rate, oil content in the treated residue, COD content, heavy metal content and wastewater and waste gas generation and treatment volume.

[0065] It should be noted that the technical factors are mainly evaluated from three aspects: technical stability, safety, and difficulty of operation and management. The quantitative membership function of each factor can be obtained by using the ascending semi-trapezoidal expression commonly used in the membership function of quantitative factors. The quantitative membership function of each basic factor is obtained by the following steps:

[0066] 1) Set the upper limit value B and lower limit value A of the basic parameters of each basic element;

[0067] 2) Calculate according to μ = (XA) / (BA), where X is the actual value of the basic parameter;

[0068] 3) Assign scores to the basic elements based on the calculation results of μ.

[0069] The basic parameters will change with the different basic elements. The calculation process is as follows:

[0070] (1) Technical stability

[0071] Continuous operating days per year (basic parameter): When the continuous operating days per year are less than 100 days, the score of this basic element is 0; when the continuous operating days per year are greater than 100 days but less than 300 days, the score is calculated according to (a-100) / (300-100), where a represents the number of days; when the continuous operating days per year are greater than 300 days, the score is 1.

[0072] (2) Technical safety

[0073] Hazard level of chemicals and intermediates: When the number of high-temperature and high-pressure devices in the system (basic parameters) is more than 3 sets (including 3 sets), the score of this basic element is 0; when the number of high-temperature and high-pressure devices in the system is more than 1 set and less than 3 sets (including 1 set), the value is calculated according to (3-b) / (3-1), where b represents the number of high-temperature and high-pressure devices; when the number of high-temperature and high-pressure devices in the system is 0, the score is 1.

[0074] It should be noted that environmental factors are mainly evaluated from two aspects: secondary waste generation and residual solid waste generation. Using the ascending semi-trapezoidal expression commonly used in the membership function of quantitative factors, the quantitative membership function of each indicator can be obtained, as follows:

[0075] Petroleum hydrocarbon content: If the petroleum hydrocarbon content in the remaining solid phase after treatment is less than or equal to 2%, the score is 1; if the petroleum hydrocarbon content in the remaining solid phase after treatment is greater than 2% and less than 5%, the value is calculated and assigned according to (5%-c) / (5%-2%), where c represents the actual petroleum hydrocarbon content; if the petroleum hydrocarbon content in the remaining solid phase after treatment is greater than 5%, the score is 0.

[0076] Heavy metal content: When the heavy metal content in the remaining solid phase is higher than or equal to the relevant standard requirements, the score is 1; when the heavy metal content in the remaining solid phase is lower than the relevant standard requirements, the score is 0.

[0077] It should be noted that the economic factors are mainly measured from the aspects of economic feasibility and comprehensive cost, as follows:

[0078] Treatment cost: When the treatment cost is less than 500 yuan / m3, the basic element score is 1; when the treatment cost is higher than 500 yuan / m3 and lower than 1,000 yuan / m3, it is assigned a value according to (1,000-d) / (1,000-500), where d represents the actual treatment cost; when the treatment cost is higher than 1,000 yuan / m3, the basic element score is 0.

[0079] Furthermore, in step S4, the following steps are included:

[0080] S401: Calculate the score of each basic element in several drilling solid waste treatment projects through quantitative membership functions, and build a score database;

[0081] S402: Select a basic element as a target element;

[0082] S403: extracting all value sets and target value ranges of target elements from the score database;

[0083] S404: Establish a score level for the target element according to the value set and the target value range.

[0084] It should be noted that the final score is the sum of the scores of each basic element and the product of the corresponding weights of each basic element.

[0085] It should be noted that the method of steps S1-S4 has been applied to the analysis of multiple oil fields, and the specific situation is as follows:

[0086] Example 1: Comprehensive application project of drilling waste treatment while drilling in a certain oil field

[0087] Process flow: The equipment and process for drilling waste treatment while drilling mainly include three parts: waste collection unit, gel breaking and destabilization unit, and solid-liquid separation unit. ① Waste collection unit: Drilling waste is collected while drilling through a screw conveyor unit and transported to the gel breaking treatment unit. ② Gel breaking treatment unit: The drilling waste in the gel breaking tank is dosed, destabilized, gel broken, flocculated, and precipitated. After meeting the solid-liquid separation requirements, it is pumped into the solid-liquid separation unit. ③ Solid-liquid separation unit: The main equipment includes a diaphragm filter press, a mud cake conveyor, and a filtrate collection and conveying device. The filter press performs solid-liquid enhanced separation on the waste mud and controls the moisture content of the filter cake within 40%.

[0088] (1) Technical factors

[0089] 1) Technical stability

[0090] The continuous operation days per year are 120 days; the maintenance cycle is 30 days; there are industrial applications, so the score is 0.1;

[0091] 2) Technical security

[0092] The system has 1 set of high-temperature and high-pressure equipment; the risk of flammability and explosion during operation is low, with a score of 0;

[0093] (2) Environmental factors

[0094] 1) Secondary waste generation

[0095] The generation of waste gas and wastewater is moderate; the generation of solid waste is 40%, with a score of 0;

[0096] 2) Changes in hazardous characteristics

[0097] Petroleum hydrocarbon content ≤2%, score 1: Flammability is not flammable; heavy metals meet standard requirements; COD ≥ (GB8978).

[0098] (3) Economic factors

[0099] Economic feasibility indicators: investment of 2 million; total area of ​​100 to 10,000 m 2 ; The comprehensive cost index is 150 yuan / ton, and the score is 1; the recycling benefit is less than 50 yuan.

[0100] Through MATLAB software, we finally got the weight of technical stability as 0.4, the weight of technical safety as 0.3, the weight of secondary waste generation as 0.11, the weight of hazardous characteristic change as 0.04, and the weight of economic factors as 0.15.

[0101] Therefore, the final score of implementation one is:

[0102] 0.1×0.4+0×0.3+0×0.11+1×0.04+1×0.15=0.23.

[0103] Example 2: A project for the “no-drop” treatment and recycling of waste drilling fluid in an oil field

[0104] Process flow: On-site construction of a detachable soft drilling fluid pool eliminates the need for traditional excavation of drilling fluid pools. High-frequency vibrating screens and centrifugal equipment are used to remove large particles of harmful solids in the waste drilling fluid, and then an electrochemical system is used to remove fine harmful solids for reuse (70-80% of which can be reused in the well site in time, and the remaining 20-30% that cannot be reused in the well site in time need to be transported to the next well site for reuse or discharged after deep treatment on site). At the same time, the separated rock cuttings and solid phase materials can be made into bricks, curbstones or paving stones on site, or they can be transported for centralized treatment to meet strength and environmental protection requirements, and used to pave well sites and well site roads, realizing the resource utilization of solid waste.

[0105] Main processing units: ① Skid-mounted waste drilling fluid collection and separation system: collects the cuttings and waste drilling fluid generated by the well site solid control system, separates the solid and liquid phases, and stores them separately. ② Skid-mounted waste drilling fluid regeneration and reuse system: used for the treatment and reuse of waste drilling fluid and water drilling fluid generated during the drilling process. ③ Skid-mounted cuttings resource utilization system: makes cuttings into road bricks, curbstones or paving stones. ④ Skid-mounted waste drilling fluid treatment and discharge system: used for the treatment of waste drilling fluid that cannot be reused in the well after drilling.

[0106] (1) Technical factors

[0107] 1) Technical stability

[0108] Continuous operation days per year: 310 days; maintenance cycle: 30 days; industrial application; score: 1;

[0109] 2) Technical security

[0110] There are 0 sets of high-temperature and high-pressure devices in the system; the risk of flammability and explosion during the operation process is low; the score is 1;

[0111] (2) Environmental factors

[0112] 1) Secondary waste generation

[0113] Waste gas and wastewater generation: moderate amount; solid waste generation: 20% to 30%; score: 0.5

[0114] 2) Changes in hazardous characteristics

[0115] Petroleum hydrocarbon content ≤ 2%: Flammability is not flammable; heavy metals meet standard requirements; COD ≥ (GB8978) score is 1;

[0116] (3) Economic factors

[0117] Economic feasibility indicators: investment of 2.5 million; total area of ​​100 to 10,000 m 2 ; Comprehensive cost index is 260 yuan / ton, with a score of 1; Recycling benefit is 70 yuan.

[0118] Through MATLAB software, we finally got the weight of technical stability as 0.4, the weight of technical safety as 0.3, the weight of secondary waste generation as 0.11, the weight of hazardous characteristic change as 0.04, and the weight of economic factors as 0.15.

[0119] Therefore, the final score of implementation one is:

[0120] 1×0.4+1×0.3+0.5×0.11+1×0.04+1×0.15=0.95.

[0121] Example 3: An oilfield waste mud and cuttings "integrated" treatment project

[0122] A combination of physical and chemical methods is used to treat it comprehensively. First, a composite high-efficiency flocculant and coagulant are used to destroy its colloidal state, and then the water is separated from the mud by vacuum adsorption. The removal rate of harmful substances in the waste mud is more than 99%. Finally, a combination of precision filtration, ultrafiltration and reverse osmosis is used to remove harmful components in the water.

[0123] The main treatment units include: material collection unit, oil removal unit, coagulation and sedimentation unit, dehydration unit, water deep oxidation unit, etc. The technology uses high-efficiency oil removal agent, composite flocculation, coagulant, composite strong oxidant, composite water treatment agent and other agents. Among them, the high-efficiency oil removal agent is compounded by 3 agents; the composite flocculation and coagulant are compounded by 4 agents; the composite strong oxidant is compounded by 2 agents; the composite water treatment agent is compounded by 3 agents.

[0124] (1) Technical factors

[0125] 1) Technical stability

[0126] Continuous operation days per year: 200 days; maintenance cycle: 30 days; industrial application; score: 0.5;

[0127] 2) Technical security

[0128] The system is equipped with 2 sets of high-temperature and high-pressure devices; the risk of flammability and explosion during operation is low; the score is 0.33

[0129] (2) Environmental factors

[0130] 1) Secondary waste generation

[0131] The amount of waste gas and wastewater generated is moderate; the amount of solid waste generated is 20%; the score is 0.3.

[0132] 2) Changes in hazardous characteristics

[0133] Petroleum hydrocarbon content ≤ 2%: Flammability is not flammable; heavy metals meet standard requirements; COD ≥ (GB8978), score is 0.

[0134] (3) Economic factors

[0135] Economic feasibility indicators: investment of 3.5 million; total area of ​​100 to 10,000 m 2 ; The comprehensive cost index is 510 yuan / ton, with a score of 1; the recycling benefit is less than 50 yuan, with a score of 0.98.

[0136] Therefore, the final score of implementation one is:

[0137] 0.5×0.4+0.33×0.3+0.3×0.11+0×0.04+0.98×0.15=0.48.

[0138] The final comprehensive evaluation is shown in Table 1. The technical solution with the highest comprehensive score is the optimal technical solution.

[0139] Table 1: Comprehensive evaluation score table

[0140]

[0141] A drilling solid waste treatment engineering analysis system, used for the above-mentioned drilling solid waste treatment engineering analysis method, such as Figure 2 As shown, it includes an initial unit, a calculation unit, a construction unit and an analysis unit, wherein the initial unit is used to obtain several basic elements of the drilling solid waste treatment project; the calculation unit is used to obtain the data of each basic element, construct a comparison matrix, and calculate the weight of each basic element; the construction unit is used to obtain the quantitative membership function of each basic element; the analysis unit is used to analyze each basic element of several drilling solid waste treatment projects based on the weight and the quantitative membership function and obtain the final score.

[0142] It should be noted that several basic elements of drilling solid waste treatment engineering are obtained based on the hierarchical analysis valve. The basic elements include technical elements, economic elements and environmental safety elements.

[0143] Furthermore, the computing unit comprises:

[0144] A calculation module, used for calculating the weight vector of each basic element through MATLAB software;

[0145] A corresponding module, used to correspond the weight of each basic element through a weight vector;

[0146] The sorting module is used to sort the weight of each basic element.

[0147] Furthermore, the analysis unit comprises:

[0148] A construction module is used to calculate the score of each basic element in several drilling solid waste treatment projects through quantitative membership functions and to construct a score database;

[0149] A selection module is used to select a basic element as a target element;

[0150] An extraction module is used to extract all value sets and target value ranges of target elements from the score database;

[0151] The grading module is used to establish the score grade of the target element based on the value set and the target value range.

[0152] It should be noted that, for the system embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The various units and modules used in the drilling solid waste treatment engineering analysis system are only divided according to functional logic, but are not limited to the above divisions, as long as the corresponding functions can be achieved; in addition, the specific names of the units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0153] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for analyzing drilling solid waste treatment engineering, characterized in that: The following steps are involved: Obtain several basic elements of drilling solid waste treatment projects; Obtain the data of each basic element, construct a comparison matrix, and obtain the weight of each basic element; Obtaining the quantitative membership function of each basic element; Based on weights and quantitative membership functions, each basic element of several drilling solid waste treatment projects is analyzed and the final scores are obtained.

2. The method for analyzing drilling solid waste treatment engineering according to claim 1, characterized in that: Several basic elements of drilling solid waste treatment engineering are obtained through hierarchical analysis method.

3. A method for analyzing drilling solid waste treatment engineering according to claim 1 or 2, characterized in that: The basic elements include technical elements, economic elements and environmental safety elements.

4. The method for analyzing drilling solid waste treatment engineering according to claim 3, characterized in that: The technical elements include processing scale, annual operating time, reagent dosage, number of high-temperature and high-pressure devices and flammable and explosive risks.

5. The method for analyzing drilling solid waste treatment engineering according to claim 3, characterized in that: The economic factors include processing operating costs, processing equipment footprint and resource recovery benefits.

6. The method for analyzing drilling solid waste treatment engineering according to claim 3, characterized in that: The environmental safety factors include the solid waste volume reduction rate, the oil content in the treated residue, the COD content, the heavy metal content, and the amount of wastewater and waste gas generated and treated.

7. The method for analyzing drilling solid waste treatment engineering according to claim 1, characterized in that: Obtaining the weight of each basic element includes the following steps: The weight vector of each basic element is calculated by MATLAB software; The weight of each basic element is corresponded by the weight vector; Rank the weight of each basic element.

8. The method for analyzing drilling solid waste treatment engineering according to claim 1, characterized in that: Obtaining the quantitative membership function of each basic element includes the following steps: Setting the upper limit value B and lower limit value A of the basic parameters of each basic element; Calculate according to μ = (XA) / (BA), where X is the actual value of the basic parameter; The basic elements are assigned scores based on the calculation results of μ.

9. The method for analyzing drilling solid waste treatment engineering according to claim 8, characterized in that: The final score is the sum of the scores of each basic element and the products of the corresponding weights of each basic element.

10. The method for analyzing drilling solid waste treatment engineering according to claim 1, characterized in that: Based on the quantitative membership function, each basic element of the drilling solid waste treatment project is analyzed to obtain the final score, including the following steps: Calculate the scores of each basic element in several drilling solid waste treatment projects through quantitative membership functions, and build a score database; Select a basic element as the target element; Extract all value sets and target value ranges of target elements from the score database; The score level of the target element is established based on the value set and the target value range.

11. A drilling solid waste treatment engineering analysis system, characterized in that: A drilling solid waste treatment engineering analysis method as claimed in any one of claims 1 to 10, comprising: Initial unit, used to obtain several basic elements of drilling solid waste treatment projects; A calculation unit is used to obtain the data of each basic element, construct a comparison matrix, and calculate the weight of each basic element; Building blocks for obtaining quantitative membership functions for each basic element; The analysis unit is used to analyze each basic element of several drilling solid waste treatment projects based on weights and quantitative membership functions and obtain final scores.

12. The drilling solid waste treatment engineering analysis system according to claim 11, characterized in that: Several basic elements of drilling solid waste treatment engineering are obtained based on hierarchical analysis valve.

13. A drilling solid waste treatment engineering analysis system according to claim 11 or 12, characterized in that: The basic elements include technical elements, economic elements and environmental safety elements.

14. The drilling solid waste treatment engineering analysis system according to claim 11, characterized in that: The computing unit comprises: A calculation module, used for calculating the weight vector of each basic element through MATLAB software; A corresponding module, used to correspond the weight of each basic element through a weight vector; The sorting module is used to sort the weight of each basic element.

15. The drilling solid waste treatment engineering analysis system according to claim 11, characterized in that: The analysis unit comprises: A construction module is used to calculate the score of each basic element in several drilling solid waste treatment projects through quantitative membership functions and to construct a score database; A selection module is used to select a basic element as a target element; An extraction module is used to extract all value sets and target value ranges of target elements from the score database; The grading module is used to establish the score grade of the target element based on the value set and the target value range.

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