173 results about "Asphaltene" patented technology

The application discloses a thickened oil viscosity reducer for a main viscosity contribution component of colloid and a preparation method thereof. The thickened oil viscosity reducer comprises the following components in percentage by weight: diethylene glycol methyl ether 25-35%, propylene glycol formate 15-25%, dispersant 5-8%, chelating agent 2-4%, anti-coking agent 0.5-1%, anti-swelling agent 1-2% and corrosion inhibitor 1-2%; and the balance is water. The application is a polar + non-aromatic hydrocarbon solvent system; completely avoids high-risk substances such as nonylphenol polyoxyethylene ether, petroleum sulfonate sodium and organic chlorine; is designed in pertinence and can effectively inhibit metal-induced asphaltene bridging; can withstand working conditions from normal temperature to 250 DEG C and up to 300 DEG C; thermal stability is significantly enhanced, and residual carbon after aging is lower than 8%; viscosity reduction efficiency is higher; the system is more stable, flexible in compounding and suitable for field construction.

The invention provides a free radical excited cross-linked composite hard carbon material as well as a preparation method and application thereof, and relates to the technical field of negative electrode materials. The composite hard carbon material is prepared from lignin and asphaltene as raw materials through lignin activation, wet ball milling, drying and calcination. Through the preparation method of free radical pre-excitation-wet ball-milling crosslinking, collaborative optimization of the sodium storage capacity, the first-week coulombic efficiency, the cycling stability and the rate capability of the composite hard carbon material is realized. Moreover, the preparation process of the composite hard carbon material provided by the invention has the advantages of good process stability, strong controllability, low cost, environmental friendliness and the like, is easy for large-scale production, meets the technical index requirements of industrial application of sodium ion batteries, and has a wide market application prospect.

The invention belongs to the technical field of asphalt pavement materials, and particularly relates to a high-permeability asphalt regenerant as well as a preparation method and application thereof, and the high-permeability asphalt regenerant is prepared from the following components in parts by weight: 100 parts of base oil, 20-50 parts of oil slurry, 5-20 parts of plasticizer and 5-15 parts of anti-aging agent. The high-permeability asphalt regenerant provided by the invention can effectively optimize the composition of old asphalt components, improve the interface fusion efficiency of new asphalt and old asphalt, and enable asphaltene to be better dispersed in aromatic components and saturated components by virtue of colloid to form a stable colloid structure; the indexes such as high and low temperature performance and water stability of the recycled asphalt mixture are improved, the temperature sensitivity of asphalt is reduced, the influence of external environment temperature on asphalt properties is reduced, and the recycled asphalt has excellent low temperature performance; the pavement performance of the RAP material is recovered, so that the performance of the aged asphalt is basically recovered to a non-aged level, and the service life of the asphalt material is prolonged.

The invention discloses a basalt fiber reinforced asphalt mixture based on solid waste synergy and a preparation method of the basalt fiber reinforced asphalt mixture, and belongs to the field of asphalt mixtures. The basalt fiber reinforced asphalt mixture based on solid waste synergy is prepared from the following raw material components in parts by mass: 1000 to 1200 parts of aggregate, 3 to 5 parts of modified basalt fiber, 50 to 73 parts of waste rubber modified asphalt, 2 to 4.38 parts of amphiphilic epoxy resin, 0.7 to 1.5 parts of curing agent and 0.06 to 0.13 part of accelerant, the modified basalt fiber is obtained by modifying triethoxysilyl butyraldehyde, 3-mercaptopropyltrimethoxysilane and allyl-1, 3-sultone, and the modified basalt fiber is prepared by modifying the triethoxysilyl butyraldehyde, the 3-mercaptopropyltrimethoxysilane and the allyl-1, 3-sultone; the amphiphilic epoxy resin is obtained by reacting dodecyl succinic anhydride, polyethylene glycol monomethyl ether 2000 and epoxy resin; m-phenylenediamine and 2-amino-4-cyanopyridine are adopted as the curing agent; n-methylimidazole is adopted as the accelerant; the asphalt mixture prepared by the invention has good rut resistance, crack resistance and water stability.

The application discloses an asphaltene separation device and an asphaltene separation method. The asphaltene separation device comprises a separation cabin, the separation cabin is in a cylindrical structure, electric heating wires are filled between the inner wall and the outer wall of the separation cabin, the electric heating wires are connected with temperature sensors, a stirring shaft is penetrated through the center of the end face of the bottom end of the separation cabin, stirring blades are sleeved with the end part of the stirring shaft, the stirring blades are in the separation cabin, the end part of the stirring shaft is connected with a stirring motor, and the stirring motor is outside the separation cabin. The asphaltene separation device and the separation method solve the problem that a long time is consumed in the asphaltene separation process, and meet the demand of people for rapid asphaltene separation. The asphaltene separation device is provided with a stirring device composed of a stirring shaft and stirring blades, the dissolution and separation time is reduced through the stirring mode, and the temperature sensors and the electric heating wires are provided, so that the temperature in the separation cabin can be accurately controlled, and the dissolution speed of solutes is accelerated.

The invention relates to the technical field of oilfield chemistry, in particular to a nano-composite viscosity reducer, a preparation method, application and a high-viscosity thick oil viscosity reduction method. According to the preparation method, the nano composite viscosity reducer is prepared from a surface-modified nano oxide and an amphiphilic polymer through a solvent exchange method; the nano oxide is nano silicon dioxide nano particles, zinc oxide nano particles or ferric oxide nano particles, and the amphiphilic polymer is a partial esterification product of a styrene-maleic anhydride copolymer or an octadecyl acrylate-methacrylic acid copolymer. According to the preparation method, the viscosity reducer not only can efficiently disassemble a colloid asphaltene network structure, but also has a certain catalytic modification function, does not influence subsequent treatment of crude oil, and has the advantages of high viscosity reduction efficiency, lasting effect, no formation of stable emulsion, shear resistance, good temperature resistance, strong universality and the like.

The utility model discloses an asphalt processing quantitative feeding device which comprises a box body and an observation window, the observation window is arranged on the front wall of the box body, a scale groove is formed in the position, close to the observation window, of the front wall of the box body, and the lower surface of the box body is communicated with a base. And the positions, located at the front end and the rear end of the base, of the lower surface of the box body are each fixedly provided with a set of mounting plates, servo motors are fixedly installed on the side walls of the mounting plates, and threaded rods are fixedly installed at the output ends of the servo motors. According to the asphalt raw material proportioning device disclosed by the utility model, the box body, the observation window, the base, the mounting plate, the servo motor, the threaded rod, the baffle plate, the slot and other parts are matched, so that the function of accurately proportioning asphalt raw materials is realized, and the quantity of the added asphalt raw materials can be clearly known through the observation window and the scale slot, so that the quantity accuracy of the added asphalt raw materials is improved; the asphalt raw material proportioning error is prevented, the influence on the quality of the processed asphalt is avoided, and the yield of asphalt production is improved.

This invention discloses a hydrodesulfurization catalyst and its preparation method and application. The steps are as follows: (1) an organic polymer is modified with acid and then mixed with boehmite powder to obtain a first mixture; (2) an aqueous solution of amorphous silica-alumina and a heated organic polymer is mixed and spheroidized to obtain a first precursor; (3) a second precursor is prepared; (4) a second mixture is prepared; (5) a third precursor is prepared; (6) a support is prepared, and after introducing a hydrogenation active metal component, it is dried and calcined to obtain the hydrodesulfurization catalyst. The prepared catalyst has a non-uniform pore distribution structure, which not only gives it high impurity removal capacity, containment capacity and asphaltenes conversion capacity, but also reduces the sediment content in the generated oil. It is particularly suitable for the hydrotreating process of directly producing low-sulfur marine fuel oil from fluidized bed heavy oil.

The utility model provides a waste oil product regeneration treatment system which comprises a hydrocracking assembly used for receiving waste oil products and hydrocracking the waste oil products; the first atmospheric and vacuum fractionation device is communicated with the hydrocracking assembly and is used for atmospheric and vacuum fractionation operation; the storage assembly is communicated with the first atmospheric and vacuum fractionation device; the oil mixing device is communicated with the first atmospheric and vacuum fractionation device; the hydrofining assembly is communicated with the oil mixing device; and the second atmospheric and vacuum fractionation device is communicated with the hydrofining assembly and the storage assembly. By adopting the waste oil product regeneration treatment system provided by the utility model, phosphorus compounds, chlorine compounds, metal additives, colloid, asphaltene and other impurities in waste oil products can be effectively removed, the regeneration rate of the waste oil products can reach more than 99%, and the problems that the regeneration rate of the waste oil products in the prior art is reduced; meanwhile, secondary pollutants such as waste gas, waste liquid or waste residues are also generated.

The present application relates to a method for determining effective relative density of steel slag and a method for determining bulk volume relative density, comprising the following steps: obtaining the asphalt mass required for completely wrapping the steel slag according to the asphalt film thickness, and then obtaining the oil-rock ratio, which is the mass ratio of asphalt to steel slag; according to the oil-rock ratio, batching the asphalt and the steel slag, mixing after preheating, and obtaining the uniformly coated steel slag; dispersing the prepared coated steel slag to obtain a dispersion, cooling the dispersion to a set temperature, weighing a set mass of the dispersion, placing it into a negative pressure device, adding water in the negative pressure device, and then vacuumizing; obtaining the theoretical maximum relative density according to the mass of the negative pressure device and the dispersion in water and the mass of the negative pressure device in water; obtaining the effective relative density of the steel slag according to the theoretical maximum relative density and the oil-rock ratio; the method principle is clear, the testing process is simple, and the determined result is more accurate than the traditional testing method.

The invention relates to a method for producing a needle coke raw material and a low-carbon olefin raw material, which comprises the following steps of: S1, extracting oil slurry from at least one layer of tower trays from the first layer to the fifth layer of tower trays from the tower bottom to the top of a main fractionating tower of a catalytic cracking device to obtain extracted oil slurry; carrying out purification treatment on the extracted oil slurry to obtain purified oil slurry; the total content of colloid and asphaltene in the purified slurry oil is less than 20wt%; s2, mixing the purified oil slurry with light cycle oil, feeding the mixed raw oil and hydrogen-containing gas into a hydrogenation device, and performing hydrodesulfurization reaction under the action of a hydrogenation catalyst to obtain a hydrogenation product; and S3, carrying out solvent extraction on the hydrogenation product to obtain extract oil and raffinate oil. According to the method provided by the invention, the feeding viscosity of a purification device is greatly reduced, the contents of colloid and asphaltene in the purified slurry oil are greatly reduced, and the generation of an aged intermediate phase is reduced; aromatic hydrocarbon and saturated hydrocarbon in hydrogenation products can be separated to the maximum extent through solvent extraction.

The invention provides a combined process method for improving the yield of vacuum residue catalytic cracking products, which comprises the following steps: determining the asphaltene dispersion coefficient d of vacuum residue according to a formula (1), where w asphaltene, w colloid and w aromatics respectively represent the mass fractions of asphaltene, colloid and aromatics in vacuum residue; and carrying out modification and catalytic cracking reaction on the vacuum residue. According to the combined process method, the asphaltene dispersion coefficient d is ingeniously designed, and d is smaller than or equal to 0.5 and dgt; the vacuum residue of which the content is 0.5 is modified by adopting different modification methods, and then catalytic cracking reaction is performed under different conditions, so that the density of a catalyst in a reactor is improved, oil-agent contact in the reactor is improved, the contact instantaneous effective agent-oil ratio can be improved, the catalytic cracking reaction ratio can be remarkably improved, thermal cracking and condensation coke generation reactions are reduced, and the catalytic cracking efficiency is improved. Conversion of inferior heavy oil is promoted, meanwhile, the coke yield is remarkably reduced, and the yield of high-value products is increased.

This application discloses a nanofluid, its preparation method, and its applications. The nanofluid comprises, by mass fraction: 0.01% to 0.7% modified nanoparticles, 1% to 4% surfactant, 0.2% to 0.6% polymer, and 0.01% to 0.2% short-chain alkanes, with the balance being water. The nanofluid provided in this application, through the synergistic effect between specific components, can significantly improve C / W foam stability and enhance oil recovery. Foam displacement agents prepared using this nanofluid can improve permeability and asphaltene content after displacement, exhibiting good overall performance.

A stabilizing additive is prepared from a heavy distillate byproduct obtained from one or more waste plastic pyrolysis processes. The heavy distillate byproduct may include polynuclear aromatic hydrocarbons that each include between 2 and 4 condensed rings, heavy polynuclear aromatic hydrocarbons having between 5 and 10 condensed aromatic rings, and combinations of polynuclear aromatic hydrocarbons and heavy polynuclear aromatic hydrocarbons.

A combined type gas well sand removing and filtering device comprises a first filtering unit and a second filtering unit which are parallel to each other. The first filtering unit comprises a first valve, a first basket filter, a first tubular filter and a second tubular filter, and the second valve is sequentially connected through a pipeline from left to right; the second filtering unit comprises a third valve, and a second basket filter, a third tubular filter, a fourth tubular filter and a fourth valve are sequentially connected through pipelines from left to right. The device has the advantages that a double-loop filter combination is adopted to perform multi-stage filtration on underground impurities, including formation sand, filling sand, solid-phase particles, organic matters, colloidal asphaltene and a foam scrubbing agent, produced in the later period of a natural gas well, so that all-directional blocking and interception are realized, and normal operation of the device is guaranteed; the first filtering unit and the second filtering unit continuously and alternately operate, so that continuous production of the natural gas well is ensured, and the production efficiency of the gas well is improved.

The invention discloses a crude oil flow modifier and a preparation method thereof, and belongs to the technical field of oilfield development. An active component in the crude oil flow modifier is a quadripolymer generated through reaction of octadecyl acrylate, maleic anhydride, cardanol and acrylamide, alkyl long chains in octadecyl acrylate and cardanol can prevent wax crystals from forming a three-dimensional network structure through adsorption and eutectic effects, and the purpose of dispersing the wax crystals is achieved; oxygen atoms in octadecyl acrylate and maleic anhydride, benzene rings and hydroxyl in cardanol and acylamino in acrylamide can hinder asphaltene aggregation through the effects of pi-pi conjugation, hydrogen bonds, steric hindrance and the like, so that the effect of dispersing asphaltene is achieved, and finally viscosity reduction and pour point depression of the high-wax and high-asphaltene crude oil are achieved.

The invention relates to the technical field of oil reservoir exploitation, in particular to a stratum test lifting device and a return liquid flowing capacity evaluation method. The inner pipe is inserted into the drill rod, a first annulus is formed between the drill rod and the inner pipe, and an upper port of the inner pipe is used for being communicated with a power liquid pump; the jet pump is connected to the drill rod and the lower end of the inner pipe, a power liquid inlet of the jet pump is communicated with a lower port of the inner pipe, and a return outlet of the jet pump is communicated with a lower port of the first annulus; and the dielectric constant probe is arranged in the first annulus. Crude oil extraction is achieved in the mode of power liquid driving, jet pump suction and mixed liquid flowback, the device adapts to the deep environment of 2500 m or above, and the reliability problem of traditional extraction equipment in the deep environment is solved; the dielectric constant probe is arranged in the first annulus, changes of the dielectric constant of the return liquid are obtained in time, the deposition risk of wax and asphaltene is early warned, the flow capacity of the return liquid is accurately evaluated, relevant parameters can be conveniently adjusted in time, and stable flow-back efficiency is maintained.

The invention belongs to the technical field of catalyst carriers, and particularly relates to an alumina carrier as well as a preparation method and application thereof. The specific surface area of the alumina carrier is 250m / g-470m / g, the pore volume of the alumina carrier is 1.0 mL / g-3. 3mL / g, the content of pores with the pore diameter larger than 100nm in the alumina carrier is larger than or equal to 15%, and the strength of the alumina carrier is larger than 5N / mm. The alumina carrier has the beneficial effects that the pore volume ratio of macropores of the alumina carrier reaches 15% or above, so that the in-particle diffusion limitation of the catalyst is effectively relieved, and the alumina carrier is particularly suitable for treating high-diffusion resistance systems such as macromolecules, heavy oil, asphaltene and coal tar; according to the present invention, the pore structure of the alumina carrier has strong adjustability, and by matching the type and the amount of the demulsifier with the auxiliary pore-enlarging agent, the 200-3500 nm macropore regulation can be flexibly achieved so as to meet different hydrogenation reaction requirements; the alumina carrier provided by the invention is high in mechanical strength, even though the pore volume is large and diffusion macropores are rich, the prepared alumina carrier still has the single grain strength of greater than or equal to 5N / mm, and meets the requirements of an industrial fixed bed hydrogenation device.

The invention belongs to an intelligent highway pavement structure based on a self-sensing asphalt material and a monitoring system of the intelligent highway pavement structure, and discloses the intelligent highway pavement structure based on the self-sensing asphalt material and the monitoring system of the intelligent highway pavement structure. A pavement structural surface layer is made of a self-sensing asphalt mixture containing an amorphous silicon-based composite functional phase, the functional phase is prepared through a specific process, a nano bowl-shaped array is arranged on the surface of the functional phase, tungsten carbide nano crystal nucleuses are coated on the surface of the functional phase, and the functional phase and asphaltene form a non-equilibrium electron cloud overlapping system. The monitoring system is based on a non-contact microwave resonant cavity coupling principle, analyzes reflected signals, extracts characteristic vectors, and inverts real-time stress, strain, damage factors and temperature state parameters in combination with an inverse problem solver. A traditional sensor pre-embedding mode is abandoned, the pavement body and the sensing function are fused, the problems of implantation damage, life mismatching, low spatial resolution and the like are solved, and a new normal form is provided for intelligent road safety early warning and full-life management.

The invention relates to the field of crude oil produced liquid ground gathering and transportation treatment and oilfield chemical calculation, and particularly discloses a shale oil demulsifier screening and compounding method based on molecular dynamics simulation. The method comprises the following steps: firstly, constructing a standardized oil-water interface molecular model containing asphaltene, colloid and a demulsifier to be evaluated on the basis of shale oil produced liquid components; then, molecular dynamics simulation is carried out under 313 K and 353 K respectively, and a system balance trajectory is obtained; extracting and calculating two key microcosmic indexes from the trajectory, wherein the two key microcosmic indexes comprise the difference E of unit area interface binding energy of a demulsifier and asphaltene / colloid and the thermally induced diffusion enhancement rate gamma calculated based on asphaltene and colloid diffusion coefficients; and finally, associating the microscopic index with the dehydration rate measured by a macroscopic bottle test experiment, establishing a demulsifier performance prediction criterion taking a high E (absolute value) and a high gamma value as a core, and performing classification and rational compounding guidance on the demulsifier according to the criterion. According to the method, rapid and low-cost virtual pre-screening and sorting of the demulsifier performance are realized by using microscopic simulation indexes. The embodiment shows that the demulsifier AR (robust adsorption type) and the demulsifier PR (strong disturbance type) can be compounded according to the mass ratio of 1: 1 based on the criterion, the dehydration rate of the demulsifier at the temperature of 70 DEG C and the concentration of 400 ppm reaches 77.52% and is remarkably superior to that of a single component and other compounding, the accuracy of the prediction criterion and the application value in guiding dominant compounding are verified, and the prediction criterion has a wide application prospect. And a new strategy is provided for rational design and efficient screening of the shale oil demulsifier.

This invention belongs to the field of oily sludge cleaning technology, specifically a macromolecular / small molecule composite surfactant for enhanced cleaning of oily sludge. A macromolecular surfactant is synthesized by mixing a main monomer (such as acrylamide), a hydrophilic monomer (such as 2-acrylamido-2-methylpropanesulfonic acid), and a hydrophobic monomer (such as long-chain alkyl methacrylate) through free radical polymerization. The unique long-chain structure of this macromolecular surfactant can form larger micelles, effectively encapsulating colloids and asphaltenes. When used in combination with a small molecule surfactant, it forms mixed micelles with stronger solubilizing capabilities, achieving highly efficient removal of colloids and asphaltenes from high-to-medium concentration oily sludge, thereby improving the removal rate of total petroleum hydrocarbons. This invention provides a new technology for the efficient and deep treatment of high-to-medium concentration oily sludge.

The invention relates to the technical field of asphalt modification application, in particular to a cementing oil reducing agent and an application method thereof in asphalt mixture concrete, and the asphalt mixture cementing oil reducing agent is prepared from the following raw materials in parts by weight: 5-9 parts of waste tire rubber powder, 1-3 parts of surfactant and 4-10 parts of mineral powder. The surfactant is selected from at least one of 2, 4, 7, 9-tetramethyl-5-decyne-4, 7-diol and 2, 5-dimethyl-2, 5-hexanediol, and the surfactant is selected from at least one of 2, 4, 7, 9-tetramethyl-5-decyne-4, 7-diol and 2, 5-dimethyl-2, 5-hexanediol. According to the invention, the waste tire powder is used as a colloid and cracking H oiling reaction source, and is matched with hexanediol or decynol for reaction catalysis, and mineral powder is used as a reaction asphaltene solid particle source, so that the black gray powdery cementing oil reducer is formed; the production process of the traditional asphalt modified mixture / concrete is innovated, subverted and simplified, and the method has revolutionary global popularization significance for overall quality improvement and cost reduction in the asphalt concrete highway industry.

The application discloses a solid reverse demulsifier for tank bottom sludge oil skimming direct pressure filtration treatment process. In view of the strong lipophilic complex emulsion system formed by asphaltene, colloid and solid particles in tank bottom sludge, the conventional pressure filtration is difficult to simultaneously remove oil and water. The application uses sodium alpha-alkenyl sulfonate as a main agent, and compounding solid reverse demulsifier of calcium chloride dihydrate and magnesium chloride hexahydrate, and effectively destroys the oil-water interface film by sodium alpha-alkenyl sulfonate and replaces the oil film on the surface of particles. At the same time, calcium and magnesium ions play the role of charge neutralization and moderate flocculation, so as to realize demulsification and oil removal, wetting reversal of solid particles from lipophilic to hydrophilic, and separation of oil phase with water phase through filter cloth at the same time. The product can be directly put into dry powder on site, the mixing reaction time is short, the dosage can be flexibly adjusted according to the nature of sludge, the oil content of mud cake can be effectively reduced, the pressure filtration dehydration efficiency is improved, and good convenience is achieved.

The invention relates to a method for degrading petroleum hydrocarbon in soil by utilizing goethite reinforced endogenous microorganisms, goethite is used as a biological stimulant to activate the activity of soil endogenous functional bacteria for degrading petroleum hydrocarbon, dominant phylum of the soil endogenous functional bacteria is proteobacteria, actinomycetes and thick-wall phylum, and the relative abundance accounts for 50-80%. Under the conditions that the pH value of soil is 6.0-9.0 and the water content of the soil is 20%-50%, the degradation rate of total petroleum hydrocarbon in the soil is larger than or equal to 60%, and the degradation rate of components such as colloid and asphaltene is larger than or equal to 45%.

The present application discloses a method for preparing asphalt modification by activating asphalt with microwave chemical effect. The method is to activate asphalt with microwave heating equipment before mixing modifier with asphalt for modification. The activation of microwave heating is to make the asphaltene in asphalt homogenized and dispersed and the chemical property more active and the viscosity reduced by the chemical effect accompanying microwave heating. When the modifier is mixed with the microwave activated asphalt to prepare modified asphalt, better molecular cross-linking or more stable colloidal system and other favorable effects will be produced to obtain products with better performance. The initial temperature for heating asphalt is the temperature for liquid storage or pump allowing, and the temperature of asphalt is raised by 50-60 DEG C after microwave heating.

The invention discloses a method for purifying crude plastic oil and crude tire oil, and relates to the technical field of purification, and the method comprises the following steps: step 1, adding an activated carbon adsorbent into the crude plastic oil or crude tire oil, stirring, and controlling the stirring speed to be 300-500r / min, the adsorption temperature to be 75-90 DEG C and the time to be 35-60min to obtain a purified material; step 2, carrying out multi-temperature gradient partition distillation treatment on the purification material, and condensing to obtain a separated oil product; wherein the activated carbon adsorbent is modified activated carbon modified by nitric acid, and the addition amount of the activated carbon adsorbent is 5-8% of the mass of the crude plastic oil or crude tire oil. According to the method, pollutants such as colloid, asphaltene, sulfur-nitrogen heterocyclic compounds and heavy metal ions in the crude oil are efficiently removed, the oil chromaticity of the product is remarkably improved, the acid value and the sulfur-nitrogen content are reduced, a large amount of acid-alkali wastewater is not discharged in the process, the adsorbent can be recycled, and the effects of improving the purification effect, improving the environmental protection property and reducing the operation cost are achieved.

The embodiment of the invention relates to an ancient oil reservoir asphaltene content calculation method and device based on deep learning. The method comprises the steps that at least one logging curve of a target area is obtained; performing orthogonal basis expansion on each logging curve to obtain a linear combination of orthogonal basis functions; and inputting the linear combination of the orthogonal basis function into a trained deep neural network model to predict the asphaltene content, that is, establishing an asphaltene prediction model by using a deep learning algorithm, and by inputting a plurality of different types of continuous logging curves, integrating the difference characteristics of logging information, removing noise redundancy, and predicting the asphaltene content. And the logging characteristics of the asphaltene reservoir are extracted, and reliable support is provided for prediction of the asphaltene content.

The application provides a heat-insulating wear-resistant oil pipe for oil well, which comprises a plurality of heat-insulating pipe bodies and umbrella-shaped weight devices, wherein one end of one of the heat-insulating pipe bodies is detachably fixedly connected with an umbrella-shaped weight device, and the tail end of the heat-insulating pipe body is connected with a plurality of heat-insulating pipe bodies; the umbrella-shaped weight device can be hung at one end of the pipe body to serve as a weight device, which helps the heat-insulating pipe body keep vertical during the process of going into the oil well, and helps the pipe body keep straight; when the heat-insulating pipe body contacts the oil in the oil well, the umbrella-shaped weight device serves as a filter screen to filter out the impurities in the oil well, such as mechanical impurities, waxes, mud, asphalt and colloid, so as to reduce the purity of the oil entering the heat-insulating pipe body and reduce the blockage of the heat-insulating pipe body.

The application discloses a kerosene product processing equipment fault prediction and intelligent operation and maintenance system and method, relates to the technical field of petroleum chemical process monitoring and fault prediction, and comprises a multi-modal causal perception layer which is configured to collect physical parameters of multiple key nodes in a poor-quality residual oil heat exchange process in real time, wherein the physical parameters at least include inlet temperature, outlet temperature, wall surface temperature, pipe pressure drop, flow distribution ratio of each parallel branch, medium density, medium viscosity, ultrasonic echo attenuation spectrum and near-infrared spectrum characteristics. The application can accurately distinguish whether the cooling operation is caused by flow state conversion to accelerate coking and output a forced turbulent flow maintenance instruction, retain the cooling benefit while avoiding the mass transfer enhancement side effect; can identify a branch imbalance type coking and output a branch equalization cleaning instruction to reverse the vicious cycle of the more blocked, the more flow; and can capture asphaltene thermal shock nucleation signals under vapor-liquid two-phase flow and output a two-phase flow suppression instruction to eliminate the thermal shock side effect.

The invention relates to the technical field of petrochemical engineering, and particularly discloses an asphalt inhibitor and a preparation method and application thereof.According to the asphalt inhibitor, strong pi-pi conjugate interaction can be generated between aromatic rings in molecules and asphaltene aromatic lamellas, so that the molecules of a dispersing agent can be like an'anchor '; the particles are firmly adsorbed on the surfaces of asphaltene particles; a long alkyl chain of octadecyl methacrylate is a strong hydrophobic group and can be further inserted into a hydrophobic region of asphaltene through strong hydrophobic interaction, so that the asphalt inhibitor can be firmly adsorbed on the surface of the asphaltene and is not easy to desorb; a polyethylene glycol chain of polyethylene glycol methacrylate is a polar flexible long chain, after the dispersing agent is anchored on the surface of asphaltene, the flexible long chain can fully extend into a surrounding oil phase medium, asphaltene particles are effectively prevented from approaching through a steric hindrance effect, the dispersity of asphaltene is improved, and the dispersion of asphaltene is improved. The purpose of reducing the viscosity of the high-condensation-point thick oil is achieved.