4373 results about "Crude oil" patented technology

The invention relates to the field of supply chain management and optimization, in particular to a crude oil supply chain management method and system, and the method comprises the steps: constructing a supply chain dynamic model through multi-modal data fusion and causal analysis; real-time data and prediction data are generated based on a digital twinning technology, and cross-node association scenes and extreme climate conditions are simulated; a transportation path, an inventory allocation strategy and a delivery sequence are dynamically optimized through a multi-objective optimization algorithm and a flexible emergency adjustment module; an optimization scheme is automatically executed by using an intelligent contract system, feedback adjustment data and improved scheme data are generated based on real-time feedback, and closed-loop optimization is realized. The dynamic adaptive capacity of the crude oil supply chain in a complex environment is effectively improved, the cost, the inventory turnover rate and the delivery efficiency are optimized, and meanwhile the robustness and the emergency response capacity of the system are enhanced.

The invention provides a high-temperature-resistant and high-salt-resistant nano imbibition agent as well as a preparation method and application thereof. The high-temperature-resistant and high-salt-resistant nano imbibition agent is prepared from amination modified mesoporous silica nanoparticles, nano cellulose, rhamnolipid, an anionic surfactant, citrate modified sodium zirconium phosphate, polyethylene glycol-b-polycaprolactone and a sulfydryl-carboxyl imidazoline derivative, therefore, the composite carrier formed by the aminated mesoporous silica nanoparticles and the nanocellulose has high mechanical strength and uniform dispersity, the oil-water interfacial tension is reduced through the synergistic effect of the rhamnolipid and the anionic surfactant, and the crude oil stripping efficiency is remarkably improved; the citrate modified sodium zirconium phosphate enables the salt resistance of the system to be greatly improved, and in a high-temperature and high-salt oil reservoir environment, the nano imbibition agent can remarkably improve the crude oil recovery rate and reduce the injection pressure and dosage; meanwhile, good adsorption resistance is achieved, and reservoir blockage is prevented; in addition, low-toxicity corrosion inhibition components protect equipment, and the service life of an oil well is prolonged.

The invention relates to the field of crude oil heating, in particular to a full-automatic electric heating system and device based on the integrated heat storage technology, and the system comprises a temperature scale module, a heating module and a heat storage module. The heating module is provided with all temperature control nodes of the oil gathering pipeline, target temperature difference compensation, pipe section heat loss compensation and a flow velocity correction factor are integrated, and adaptive electric heating power of all the temperature control nodes of the oil gathering pipeline is generated through a reverse cascade feedback control algorithm. The heat storage module continuously collects temperature field characteristics, operation condition characteristics and medium thermal attributes of the oil gathering pipeline, judges whether heat storage operation is triggered or not through multi-dimensional coupling evaluation, distributes heat storage media through a priority algorithm, drives a valve to switch and execute adaptive heat storage operation, and achieves precise temperature field regulation and control and energy efficiency optimization of the oil gathering pipeline. And stable crude oil transportation is guaranteed.

The invention belongs to the technical field of oil exploitation, and particularly relates to a method for determining the application limit of conglomerate oil reservoir carbon dioxide huff and puff and carbon dioxide-water displacement. The method solves the problem of low crude oil extraction efficiency caused by unreasonable application boundaries of carbon dioxide huff and puff and carbon dioxide-water displacement of conglomerate oil reservoirs at present. According to the technical scheme, the method comprises the steps that a conglomerate oil reservoir standard matrix and fractured cores are obtained, the cores are arranged according to a harmonic average method, the cores are sequentially loaded into a long core displacement device according to the arrangement sequence, and the initial state of the oil reservoir is established; respectively carrying out carbon dioxide huff and puff and carbon dioxide-water displacement experiments to obtain the crude oil exploitation efficiency of each experiment, establishing a fracture ratio and crude oil exploitation efficiency plate, and determining the application limit of the conglomerate oil reservoir carbon dioxide huff and puff and carbon dioxide-water displacement through the plate; according to the new method, an oil reservoir development scheme can be optimized, and higher economic benefits and operation flexibility are achieved.

The invention discloses a pressure pipeline-oriented crude oil storage and transportation safety state dynamic monitoring method, and belongs to the field of pressure pipeline engineering safety monitoring, and the method comprises the steps: obtaining multi-modal sensing data collected by a plurality of sensor nodes; performing signal space-time fusion processing on the multi-modal sensing data to generate environment interference compensation parameters; constructing a dynamic compensation model based on the environmental interference compensation parameters, and outputting a pipeline body damage feature vector and a medium state feature vector; carrying out migration enhancement analysis on the pipeline body damage feature vector and the medium state feature vector to generate a migration enhancement feature vector; and generating a corresponding safety early warning signal according to a comparison result of the migration enhancement feature vector and a preset dynamic threshold parameter. According to the invention, a multi-sensor space-time fusion and migration enhancement analysis technology is adopted, real damage signals can be accurately identified, and dynamic threshold early warning can be realized.

The invention belongs to the technical field of oil and gas field development, and particularly relates to a CO2 thickening agent for supercritical CO2 oil displacement and a preparation method of the CO2 thickening agent. The preparation method of the CO2 thickening agent for supercritical CO2 oil displacement comprises the following steps: (1) mixing a maleic anhydride compound and a styrene compound, dissolving in water, introducing inert gas, and heating; (2) slowly dropwise adding a mixed solution of a vinyl acetate compound and an initiator, and cooling after the reaction is finished; and (3) filtering, washing a solid phase by using an anhydrous alcohol substance, drying, and grinding to obtain a thickening agent product. The supercritical CO2 thickened by the thickening agent prepared by the invention can effectively slow down the viscous fingering phenomenon in the displacement process and improve the CO2 sweep efficiency, thereby improving the crude oil recovery rate.

The invention discloses a nano imbibition oil displacement agent as well as a preparation method and application thereof. The preparation method of the nano imbibition oil-displacing agent comprises the following steps: reacting citric acid, glucose, long-chain amine, a surfactant, an organic solvent, short-chain alcohol and water at 140-200 DEG C under 0.4-0.5 MPa for 6-16 hours to obtain the nano imbibition oil-displacing agent. The method disclosed by the invention is simple, convenient, environment-friendly and low in cost, and the prepared nano imbibition oil displacement agent has good surface and interface activity at high temperature and high salt, can be used as an imbibition oil recovery agent for an ultra-low permeability reservoir, and can remarkably improve the oil recovery rate.

The invention relates to an oil refinery production and purchase collaborative optimization method based on multi-agent reinforcement learning, and the method comprises the following steps: S1, constructing a production agent, a purchase agent and a production plan model, setting an action space, a state space and a reward function of a production agent and a purchasing agent and an environment updated based on a production plan model after the agents output actions; s2, setting action interaction, state interaction and reward interaction between the production agent and the purchasing agent; and S3, training a production agent and a purchasing agent by adopting an asynchronous MAPPO method based on the interaction set in the S2, obtaining actual oil refinery production data, and inputting the actual oil refinery production data into the trained production agent and purchasing agent to obtain an actual production and purchasing plan. Compared with the prior art, the method has the advantages of improving the production efficiency, reducing the operation cost, keeping the stock balance of crude oil and the like.

[Problem] To provide a method for efficiently producing a chemical product from a waste material containing waste tires by improving each step in a series of processes to realize long-term operation of the processes. [Solution] This method for producing a chemical product involves a pyrolysis step for obtaining, through pyrolysis of a crushed product of a waste material including waste tires, a first gas component, a pyrolysis oil, and a residual component, a low-temperature hydrogenation step for subjecting a raw material oil containing at least part of the pyrolysis oil to a low-temperature hydrogenation treatment at a temperature of 180°C-350°C to obtain a low-temperature hydrogenated oil, a high-temperature hydrogenation step for subjecting a raw material oil containing at least part of the low-temperature hydrogenated oil to a hydrogenation treatment at a temperature higher than that of the low-temperature hydrogenation treatment to obtain a second gas component and a high-temperature hydrogenated oil, a separation step for separating a naphtha fraction from other fractions through atmospheric distillation of an atmospheric distillation raw material oil containing crude oil and at least part of the high-temperature hydrogenated oil, and a steam cracking step for subjecting a steam cracking raw material oil containing at least part of the naphtha fraction and / or other fractions to a steam cracking treatment to obtain a chemical product, wherein the amount of the pyrolysis oil with respect to the total amount of the first gas component, the pyrolysis oil, and the residual component in the pyrolysis step is 40% by mass or more.

The invention provides a supramolecular hydrogel packer constructed by interaction of a subject and an object as well as a preparation method and application of the supramolecular hydrogel packer, and belongs to the technical field of drilling fluid packing. The supramolecular hydrogel packer constructed by interaction of the subject and the guest comprises the following raw materials in percentage by mass: 12-36% of a copolymerization monomer, 6-10% of a tannic acid grafted polysaccharide aqueous dispersion, 0.5-1.5% of an initiator, 0.3-0.6% of a cross-linking agent and the balance of water, the total amount of the components is 100%. The raw materials are cheap, easy to obtain, simple in composition, low in cost, green, safe and environment-friendly; the preparation method is simple, mild in condition and easy to implement. After crosslinking, the obtained packer has excellent mechanical properties, temperature and pressure resistance and outstanding pH degradation capability, and can effectively pack a crude oil reservoir to form an integral sealing interlayer, so that heavy oil entering a shaft is reduced; meanwhile, degradation of the hydrogel can be effectively realized, and deblocking is achieved.

The invention provides a super-hydrophobic / super-oleophylic degradable photo-thermal aerogel adsorption material and demulsification performance thereof, and belongs to the technical field of oil-water separation materials, and the super-hydrophobic / super-oleophylic degradable photo-thermal aerogel adsorption material is prepared by the following steps: (1) extracting cellulose from waste cartons and performing ultrasonic dispersion to prepare a cellulose suspension; (2) preparing a chitosan solution; (3) mixing the cellulose suspension and the chitosan solution to obtain a cellulose / chitosan composite solution, adding nano carbon black particles, glutaraldehyde and a methyltrimethoxysilane aqueous solution into the cellulose / chitosan composite solution, and stirring; (4) injecting the mixed solution into a mold, and performing directional freezing on a semiconductor refrigeration platform; and (5) performing freeze drying on the frozen sample, and then putting the frozen sample into a drying oven for cross-linking to obtain the aerogel. The aerogel is obtained by taking cellulose extracted from waste cartons and chitosan as organic frameworks, carrying out chemical crosslinking through glutaraldehyde, introducing nano carbon black particles as photo-thermal components and carrying out hydrophobic modification through methyltrimethoxysilane, and has an excellent pore structure, super-hydrophobicity-super-lipophilicity and excellent mechanical properties; the adsorbent has efficient adsorption capacity on high-viscosity crude oil; and the device can be repeatedly used and is biodegradable, so that the burden on the environment is reduced.

The invention discloses a preparation method and application of a pH-responsive controllable oil-water separation material, polyurethane sponge is used as a substrate, polypyrrole is attached to the sponge substrate through an in-situ polymerization method, a pH-responsive polymer is introduced into the sponge substrate through a soaking method, and finally the pH-responsive controllable oil-water separation material is obtained. The controllability of the material in the oil-water separation process is reflected as follows: due to the introduction of the pH responsive polymer, the surface of the material has pH responsiveness, the surface of the material has different wettability by adjusting the pH value, different types of oil-water mixtures can be controllably separated in a targeted manner, and the adsorption and desorption of oil products can be realized. Due to the introduction of polypyrrole, the material has good photo-thermal conversion capacity, the viscosity of crude oil can be effectively reduced, and the absorption rate of the crude oil can be improved. The material with pH responsiveness has wide application prospects in the fields of oil-water separation, oil product adsorption and desorption and crude oil absorption.

The invention belongs to the technical field of petroleum machinery, and particularly relates to a combined type polish rod breakage blowout prevention wellhead device which comprises a valve body, a horizontally symmetrical penetrating cavity is formed in the valve body, the two ends of the cavity are blocked and fixed through glands, and a vertically-penetrating annular channel is further formed in the valve body and allows an oil pumping polish rod to pass through. Two gate plates are further symmetrically arranged in the valve body corresponding to the horizontally-symmetrical penetrating cavity, a rib plate is arranged on one side of the cover plate, and a right-angle rubber base is fixedly connected between the gate plates and the rib plate through bolts. The device can be automatically triggered after the oil pumping polish rod is broken and disengaged, a blowout channel is rapidly sealed, oil well back pressure spraying is prevented, environment pollution caused by crude oil spraying is avoided, and the device has the function of guaranteeing sealing between a wellhead device and the oil pumping polish rod during normal production of a rod-pumped well. And the wellhead device can be isolated from the shaft when the packing is maintained and replaced by the oil extraction system of the pumping unit.

The invention discloses a composite viscosity reducer and an oil extraction and viscosity reduction process thereof, and belongs to the technical field of petrochemical engineering. The composite viscosity reducer comprises an amphiphilic copolymer, sodium fatty alcohol polyoxyethylene ether sulfonate, modified nano silicon dioxide and water, wherein the composite viscosity reducer is prepared from 0.5 to 5 weight percent of amphiphilic copolymer, 0.05 to 2 weight percent of fatty alcohol polyoxyethylene ether sodium sulfonate, 5 to 15 weight percent of modified nano silicon dioxide and the balance of water. The composite viscosity reducer has good temperature resistance and can adapt to a complex oil reservoir environment, and the composite viscosity reducer can be matched with a hydrodynamic cavitation transducer, so that sodium fatty alcohol polyoxyethylene ether sulfonate can be fully mixed and emulsified with crude oil, the crude oil is heated, and the oil displacement and viscosity reduction effects are further improved.

The invention relates to the technical field of CO2 miscible-phase oil displacement, in particular to an ester gas-soluble surfactant for reducing CO2 miscible-phase pressure and a preparation method and application thereof.The ester gas-soluble surfactant is prepared from polyglycerol fatty acid ester and acetic anhydride, the ester gas-soluble surfactant contains unsaturated hydrocarbon chains with the carbon atom number being 8-18, and the unsaturated hydrocarbon chains are connected with the polyglycerol fatty acid ester. N is the polymerization degree of the polyglycerol fatty acid ester, n is any integer in the range of 2-22, and the ester gas-soluble surfactant has the solubility of 0.5 wt%-1.5 wt% in supercritical carbon dioxide. When the ester gas-soluble surfactant provided by the invention is used, other auxiliaries do not need to be added, and a good mixing reduction effect can be achieved aiming at different crude oils by adjusting the number of carbon dioxide-philic groups and the length of oleophylic unsaturated hydrocarbon chains.

The invention discloses a photo-thermal phase change fiber material with a core-shell structure and a preparation method of the photo-thermal phase change fiber material. The method comprises the following steps: performing coaxial electrostatic spinning on a shell layer spinning solution and a core layer spinning solution to obtain core-shell structure nanofibers; soaking the core-shell structure nanofiber in the hydrophobic modification solution; and heating and drying the soaked fibers to obtain the photo-thermal phase change fiber material with the core-shell structure. The material can enhance adsorption of marine leaked crude oil through solar heating, can cope with complex weather conditions through heat storage of the phase change material, and has the advantages of simple preparation method, strong crude oil adsorption performance, environmental protection, harmlessness and the like.

The invention belongs to the technical field of crude oil electric heating furnaces, and relates to a crude oil electric heating furnace control system and a crude oil electric heating furnace. Temperature feature vectors of multiple independent heating sections are collected, a dynamic weight matrix used for representing the thermal inertia unbalance degree is generated, and temperature control compensation gains are generated through real-time analysis in combination with crude oil viscosity-temperature data; performing adaptive adjustment by combining corresponding element values of the dynamic weight matrix to output a segmented power regulation instruction, preferentially calling redundant power of the main and auxiliary coils for cooperative heating, starting adjacent segment compensation heating when the main and auxiliary power is insufficient, and setting heat balance constraint and deviation monitoring termination conditions at the same time; local over-coking is avoided while the power resource utilization rate of the crude oil electric heating furnace is remarkably improved, the viscosity is rapidly converged to a steady-state range through closed-loop feedback of viscosity data after heating and iterative optimization of a regulation instruction, and the stability of long-term operation of the system and the achievement speed of a control target are remarkably improved.

The invention discloses an experimental device and method for simulating carbon dioxide micro-nano bubbles to improve the recovery ratio and monitoring storage, belongs to the technical field of oil and gas field development, and mainly aims at exploring the application potential of the carbon dioxide micro-nano bubbles in the aspect of improving the oil reservoir recovery ratio. A high-strength X-CT technology is used for monitoring the sealing effect of the carbon dioxide in the reservoir stratum in real time; the experimental device for simulating the carbon dioxide micro-nano bubbles to improve the recovery ratio and monitor the sealing comprises a first Quizix pump, a second Quizix pump, a confining pressure pump, a gas mass flow controller, a micro-nano bubble generation device, a micro-nano bubble phase state visualization device, a waste liquid collection device, a six-way valve, an oil source container, a gas source container, a liquid source container, a first pressure gauge and a second pressure gauge. The system comprises a core holder, a high-strength X-CT scanning device, an image capture camera and a master control system. The device can simulate carbon dioxide micro-nano bubbles to improve the crude oil recovery rate and monitor the sealing effect of carbon dioxide in real time.

The invention relates to an AIS data-based port ship unloading area analysis method. The method comprises the following steps of: 1, preprocessing AIS data, namely carrying out cleaning screening and attribute supplementation on original data; 2, ship staying leg extraction: defining a staying leg by using motion features and expressing the staying leg by using a Geohash grid; step 3, port destination text matching: matching irregular destinations with standard port names; 4, bidirectional destination retrieval: analyzing an accurate destination by using a ship trajectory, and determining an affiliation port of a staying grid; and 5, grid integration and route cutting: integrating grids belonging to different ports to obtain an unloading area, and cutting a whole-cycle route of the ship. According to the method, the problems of complex unloading mode and complex route staggering around a port are solved, and reliable technical support is provided for trade monitoring of bulk energy goods such as crude oil by utilizing the complementary advantages of time-space information and destination texts in AIS data.

The invention relates to the technical field of petrochemical engineering, in particular to a method and equipment for predicting the yield of crude oil cut distillate oil, a medium and a product. According to the method, near infrared spectrum data of to-be-predicted crude oil is obtained, a corresponding key spectrum variable is determined, the key spectrum variable is input into a target prediction model corresponding to the type of the to-be-predicted crude oil, and the cut distillate yield output by the model is obtained. Thus, interference of other parameters on prediction accuracy is reduced through the key spectral variables with high correlation degree with the cut distillate yield, and the exclusive prediction model is constructed for different types of crude oil, so that interference of heterogeneity between crude oil types on prediction accuracy is reduced, the adaptability of the prediction model to different crude oil characteristic changes is improved, and the prediction accuracy is improved. Therefore, the prediction model can rapidly and accurately predict the yield of the cut distillate oil of the crude oil, and the prediction accuracy and prediction efficiency of the yield of the cut distillate oil are improved.

A geothermally powered petrochemical refining system includes a geothermal system with a wellbore extending from a surface into an underground magma reservoir. A geothermally powered fractional distillation system receives crude oil and produces distillates which are separated by molecular weight. The distillates may be provided to a geothermally powered cracking system that is heated by a heat transfer fluid heated by the geothermal system to crack heavy hydrocarbons into lighter ones. The distillates may be provided to a geothermally powered reforming system that is heated by a heat transfer fluid heated by the geothermal system to reform hydrocarbons into different structures.

The utility model belongs to the field of crude oil heating, and particularly relates to a crude oil heating device which comprises an air energy heat pump, a water-oil heat exchanger, an air-oil heat exchanger, a solar hot air heat collector and a ground source heat exchanger. A heat exchanger tube pass is arranged in an inner cavity of the water-oil heat exchanger, the two ends of the heat exchanger tube pass are communicated with a heat exchanger oil conveying pipe, and the ground source heat exchanger is communicated with an air source evaporator copper pipe and used for evaporating refrigerants in a pipeline of the ground source heat exchanger and the air source evaporator copper pipe. The heat pump and other two heat sources can form a multi-source heating device, and the system keeps constant temperature through crude oil secondary heat exchange and phase change heat storage, is energy-saving, efficient and pollution-free, can adapt to cold weather, and is suitable for popularization.

The invention discloses a shale hydrocarbon expulsion efficiency evaluation method, device, equipment and medium, and relates to the technical field of shale gas exploration and developing.The shale hydrocarbon expulsion efficiency evaluation method includes the steps that hydrocarbon generation quantity charts of shale under different total organic carbon TOC grades are constructed; testing the water saturation of the core sample of the shale to obtain the water saturation rate of the core sample; carrying out oil washing treatment on the rock core sample, and carrying out porosity test to obtain rock porosity and rock apparent density; obtaining a crude oil sample of a production layer where the core sample is located, and performing a crude oil physical property experiment to obtain crude oil density; when key parameters such as water saturation rate, rock porosity, rock apparent density, crude oil density and shale hydrocarbon generation quantity charts under different total organic carbon TOC grades of a core sample and key parameters of hydrocarbon release and migration in a hydrocarbon expulsion process are measured, a dynamic measurement process is adopted, and the dynamic measurement process can realize dynamic simulation of a hydrocarbon migration path; and finally, accurate evaluation of the shale hydrocarbon expulsion efficiency is realized.

The invention relates to the technical field of data detection, in particular to a three-dimensional multi-parameter real-time monitoring system and method for a floating roof of a crude oil storage tank. The multi-mode sensor array is arranged on the surface of a floating roof and the inner wall of a storage tank and used for collecting displacement, deformation, pressure and environmental parameters of the floating roof in real time; the data acquisition and preprocessing module is connected with the sensor array and is used for signal conditioning, analog-to-digital conversion and noise suppression; the edge calculation unit is deployed on a storage tank site and used for processing sensor data in real time and executing initial analysis; the three-dimensional dynamic modeling module is used for constructing a floating roof three-dimensional attitude model based on multi-source sensor data; the cloud analysis platform is connected with the edge computing unit through the industrial Internet of Things and is used for deep data analysis and early warning decision making; according to the scheme, the technical problems of insufficient parameter coverage, difficult data fusion, one-sided state evaluation and the like can be solved.

The invention provides an oil-water well oil pipe thread profile measurement method based on three-dimensional point cloud adaptive slicing. The method comprises the following steps: step 1, obtaining an oil pipe thread three-dimensional point cloud image; 2, normalizing the 3D point cloud data; 3, extracting a global feature recognition point cloud image, carrying out point cloud positioning, and segmenting point cloud data; step 4, extracting the labeled detection area for denoising processing; step 5, segmenting the 3d point cloud image into a plurality of square blocks; step 6, performing projection mapping processing on the plurality of point cloud blocks from front view, top view and side view angles to obtain a pseudo picture; and step 7, carrying out pseudo image matching and combining with a loss function to judge whether the image is qualified. According to the oil-water well oil pipe thread profile measurement method based on the three-dimensional point cloud self-adaptive slicing, operation reworking caused by oil pipe sealing leakage is reduced, the working efficiency is improved, the crude oil yield loss is reduced, and it is avoided that the liquid supply capacity of an oil well is reduced due to leakage.

A device for preparing chemicals through waste plastic and crude oil mixed feeding grading gas-phase dehydrogenation cracking is composed of a waste plastic self-hot-melting dechlorination pretreatment subsystem, a waste plastic melting liquid and crude oil selective vaporization dehydrogenation cracking subsystem, a high-temperature cracked oil gas gas-phase catalytic cracking subsystem and a cracked oil gas fractionation and refining subsystem. A recycle oil pipeline and a cracking dry gas pipeline of the cracking oil-gas fractionation and refining subsystem are respectively connected to a high-temperature molten oil inlet and a feeding carrying gas inlet of the waste plastic self-heating melting dechlorination pretreatment subsystem, and a waste plastic molten liquid delivery pipeline of the waste plastic self-heating melting dechlorination pretreatment subsystem is connected to a crude oil feeding pipeline; a waste plastic and crude oil mixed feeding pipeline is connected into the waste plastic molten liquid and crude oil selective vaporization dehydrogenation cracking subsystem through an atomizing nozzle, selective vaporization dehydrogenation cracking and gas-phase catalytic cracking are sequentially completed in a grading mode, and then the cracked oil gas fractionation and refining subsystem produces triene tribenzene, high-temperature recycle oil and cracked dry gas.

The invention discloses an intelligent agent-based oil field station unattended intelligent operation and maintenance centralized control method and system, and belongs to the technical field of oil field station intelligent operation and maintenance management. The system comprises a data acquisition module, a data summarization decision module, a station coordination execution module, an emergency intervention module and an output module; pressure sensors, temperature sensors, flow sensors, liquid level sensors and water content sensors are arranged at oil field inter-well stations, transfer stations and united stations, and crude oil conveying equipment data of the inter-well stations, the transfer stations and the united stations are collected in real time. According to the intelligent agent-based unattended intelligent operation and maintenance centralized control method and system for the oil field station, station correlation analysis, instant optimization adjustment strategy and target optimization adjustment strategy generation, station specific parameter execution, feedback and optimization adjustment strategy fine adjustment and decision process recording can be realized, and a large model and a small model are closely combined; and an up-and-down collaborative hierarchical control framework is formed, so that the practicability and functionality are enhanced.

The invention provides an amphiphilic carbon dot, a carbon nanofluid and application of the amphiphilic carbon dot and the carbon nanofluid, and belongs to the technical field of nanomaterial oil displacement, and the amphiphilic carbon dot is prepared by taking alkylphenol polyoxyethylene ether and glucose as raw materials to perform solvothermal reaction; the alkylphenol polyoxyethylene ether comprises octylphenol polyoxyethylene ether and / or nonylphenol polyoxyethylene ether; the mass ratio of the alkylphenol polyoxyethylene ether to the glucose is 1: (0.1-2). According to the invention, alkylphenol polyoxyethylene ether and glucose are taken as raw materials, and simple preparation of the amphiphilic carbon dots with high surface and interface activity is realized. The amphiphilic carbon dots provided by the invention show good surface and interface activity at high temperature and high salinity. According to the carbon nanofluid provided by the invention, the amphiphilic carbon dots and the zwitterionic surfactant are compounded, so that the stability of a carbon nanofluid oil displacement system at high temperature and high salt can be further improved, the crude oil recovery rate is increased, and efficient yield-increasing development of high-temperature and high-salt deep oil reservoirs is realized.

The invention discloses an industrial process online prediction model construction method based on self-attention manifold learning, which is suitable for measuring phase or pulse characteristics, and is characterized in that an initial data manifold is constructed on the basis of an information entropy weight theory, and a self-attention mechanism and a residual error correction algorithm are introduced; and synchronous optimization of weight distribution and embedding mapping is realized through loop iteration, so that a self-adaptive multi-entropy weight manifold embedding prediction model capable of deeply mining data time sequence characteristics is constructed. The effectiveness of the method is verified through a preferable embodiment, specifically, the method is applied to processing pulse nuclear magnetic resonance relaxation spectrum data, and real-time and high-precision online prediction of the wax content in a crude oil sample is successfully achieved. According to the method, the prediction precision and robustness are remarkably improved.

The invention provides a calibration method for a nuclear magnetic fluid signal conversion relation with shale as a carrier and application, and belongs to the technical field of unconventional oil-gas exploration and development. The method comprises the steps that shale samples are pretreated, and fluid saturation is conducted on the shale samples; the saturated shale is subjected to centrifugation and drying treatment, and T2 spectrogram testing is carried out by adopting nuclear magnetic resonance equipment in different treatment stages; and the conversion relation of the oil-water fluid in the shale is established by comparing the attenuation amount of the fluid in the shale pores at different stages with the T2 spectrogram signal difference value. The mass change caused by fluid loss in the closed coring shale is used as the verification basis of the conversion relation, and the reliability of the method is ensured. And then crude oil with different maturity degrees and formation water fluids with different mineralization degrees are adopted to repeat the operation, the calibration conversion relation of the crude oil with different maturity degrees and the formation water with different mineralization degrees is obtained, then the change rule of the calibration conversion relation is disclosed, and the accuracy and scientificity of the nuclear magnetic resonance technology in the aspect of shale fluid evaluation are improved.