22 results about "Light crude oil" patented technology

The invention relates to a solvent-resistant polyimide film and a preparation method and application thereof, and the preparation method comprises the following steps: (1) reacting a diamine monomer with a dianhydride monomer in the presence of a catalyst and a first solvent to obtain polyimide; the diamine monomer comprises a diamine monomer containing carboxyl; (2) dissolving polyimide in a second solvent to form a first polyimide solution, performing phase inversion treatment after film formation to obtain an intermediate film, and treating the intermediate film in an organic solution containing metal ions to obtain a supporting base film; and (3) dissolving the polyimide in a third solvent to form a second polyimide solution, coating the second polyimide solution on the supporting base membrane, drying, and treating with an organic solution containing metal ions to obtain the solvent-resistant microporous polyimide film. The polyimide film prepared by the method has excellent solvent resistance, good hydrophobicity and good permeability to hydrocarbon solvents, and has a good application prospect in the field of light crude oil separation.

The invention relates to the technical field of oil and gas exploration, and discloses a device and method for quantitatively representing the occurrence state of oil reservoir fluid with ultrahigh precision, the device comprises a test module, the test module comprises a plurality of flow modules and a plurality of simulation pieces, the simulation pieces are respectively arranged in the flow modules, and the simulation pieces are used for simulating different types of oil reservoirs; one end of the flowing module is communicated with the injection part, the injection part is used for injecting light crude oil, heavy crude oil and methylbenzene into the flowing module, and the other end of the flowing module is communicated with the fluid receiving device; the pressure and temperature adjusting system is used for adjusting the pressure and the temperature in the flow module; and the removing part is positioned on one side of the flowing module and is used for removing the residual fluid on the simulation part. The device has the functions of automatic cleaning, high temperature and high pressure and multi-condition combination, accurately represents the occurrence state rule of light oil and heavy oil in different types of oil reservoirs, and provides a theoretical basis for fluid mobility evaluation and development scheme optimization in the oil reservoir development process.

The application provides a method and device for preparing low-carbon olefins and aromatic hydrocarbons from aromatic hydrocarbon-containing light crude oil, which comprises the following steps: pretreating the aromatic hydrocarbon-containing light crude oil to obtain pretreated crude oil, subjecting the pretreated crude oil to raw material fractionation treatment to obtain a cracking unit feed stream, subjecting the cracking unit feed stream to cracking treatment to obtain a cracking product stream and a first residual oil stream; discharging the first residual oil stream, subjecting the cracking product stream to product separation treatment to obtain a separation product stream and a cracking gasoline stream; subjecting the cracking gasoline stream to gasoline hydrogenation treatment to obtain a hydrogenated cracking gasoline stream, subjecting the hydrogenated cracking gasoline stream to aromatic hydrocarbon extraction treatment to obtain a fourth aromatic hydrocarbon-rich stream, and subjecting the fourth aromatic hydrocarbon-rich stream to aromatic hydrocarbon separation treatment to obtain an aromatic hydrocarbon separation product stream. Compared with a traditional refining and chemical integration process, the technical scheme of the application greatly shortens the processing flow and can maximize the yield of low-carbon olefins and aromatic hydrocarbons from the aromatic hydrocarbon-containing light crude oil.

The present invention relates to a method for blending light crude oil, comprising: (1) analyzing a mixed crude oil after electric desalting in a normal and low pressure device to obtain a density and a real boiling point distillation curve, and analyzing a distillate obtained by processing the mixed crude oil in a normal and low pressure device to obtain a density and an Engler distillation curve; (2) referring to a desired light crude oil, comparing the distillate curve with the real boiling point distillation curve of the mixed crude oil, selecting the distillate obtained by processing the mixed crude oil, using a process simulation software to establish an oil product mixture, and using a controller to set constraint conditions to obtain the proportion of each component of the blended crude oil. The method of the present invention can obtain a blended crude oil with properties similar to those of the desired light crude oil by mixing the mixed crude oil and its distillate being processed in a normal and low pressure device in a proportion, and the light crude oil can meet the processing requirements. The method of the present invention is simple and fast, and does not require the establishment of a complex model to obtain a blended crude oil with properties similar to those of the light crude oil, and can be used in the field of direct cracking of light crude oil.

The present invention discloses a method for optimizing marine oil spill emergency recovery, belonging to the field of oil recovery technology. The method comprises the following steps: obtaining marine oil spill accident risk factors; constructing a three-objective function consisting of maximizing oil recovery, minimizing recovery costs, and minimizing environmental impact; solving the three-objective function using a multi-objective genetic-particle swarm hybrid algorithm, combining a non-dominated sorting genetic algorithm with a particle swarm optimization algorithm, to obtain an optimal solution set for different configurations of different numbers of oil skimmers under different weights for maximizing oil recovery, minimizing recovery costs, and minimizing environmental impact; and employing a fuzzy superior-inferior solution distance method to find the optimal number of oil skimmers under certain weights from the optimal solution set for different configurations of different numbers of oil skimmers, thereby obtaining a marine oil spill emergency recovery solution. This method can reduce environmental and economic losses, thereby achieving efficient and low-cost optimization of light crude oil recovery strategies.

The present disclosure relates to a method and system for producing olefins by steam cracking of crude oil, which first fractionates the crude oil in a fractionating tower, and then introduces the first liquid phase fraction obtained by fractionation into a flash tower for second separation, to obtain a plurality of gas phase fractions for steam cracking, thereby realizing effective subdivision of the fractions in the crude oil; the process and control scheme are simpler, and for specific light crude oil such as paraffin-based crude oil, different fractions can be efficiently cracked, the yield of olefins is high, and the existing steam cracking technology can be maximally applied, the technology is mature and the operation is simple; the combination of the fractionating tower and the flash tower can more easily control the steam-out of different fractions; the atmospheric and vacuum devices, heating furnaces and the like are cancelled, thereby saving investment; the present disclosure is suitable for a wide range of crude oils, and the separated fractions can be flexibly utilized.

The present application relates to a method and system for producing high-value products with high utilization of crude oil, which comprises: (1) subjecting crude oil to distillation cutting to obtain light crude oil fraction and heavy crude oil fraction; (2) subjecting the heavy crude oil fraction to extraction separation to obtain extracted oil of the heavy crude oil fraction and raffinate oil of the heavy crude oil fraction; (3) contacting a catalytic cracking raw material with a catalyst in a catalytic cracking reactor to perform a catalytic cracking reaction, and separating oil and gas to obtain cracking gas, cracking light gasoline, cracking heavy gasoline, cracking diesel and cracking heavy oil; the catalytic cracking raw material comprises the light crude oil fraction, the extracted oil of the heavy crude oil fraction and difficult-to-convert components. The present application adopts a method combining crude oil component separation and catalytic cracking reaction, and can convert intermediate-based crude oil or poor-quality naphthenic-based crude oil into high-value products, with a yield of high-value products in the whole process close to 65% or more.

A method for determining whether crude oil has been produced from a hydrocarbon reservoir wellbore that has been drilled using an oil-based mud (OBM). The method includes proving the OBM which contains a tracer, filtering the OBM to obtain an OBM filtrate comprising the tracer, determining a baseline absorbance value for the OBM filtrate containing the tracer, determining a baseline absorbance value for the crude oil, introducing the OBM filtrate into a hydrocarbon reservoir wellbore, conducting a wellbore operation with the OBM, producing a sample from the well, measuring a measured absorbance value for the sample, and comparing the measured absorbance value with the baseline absorbance values for the OBM filtrate and the baseline absorbance value for the crude oil to determine whether crude oil is present in the sample.

The invention discloses an in-situ self-growing dispersion glue system as well as a preparation method and an injection process thereof, and belongs to the technical field of oil exploitation. The preparation method comprises the following steps: S1, preferably selecting an emulsifier; s2, preferably selecting a dispersion glue system of which the steering pressure is not lower than a threshold value and the stabilization time is not lower than 6 months under the conditions of oil reservoir temperature and mineralization degree; s3, light crude oil with the viscosity smaller than 50 mPa.s is selected; s4, according to the target plugging particle size of the target oil reservoir, the dosage of the emulsifier, the dosage of the dispersion glue system and the dosage of the light crude oil are optimized; s5, adding the loose glue system into water to obtain a stably dispersed water phase system; s6, mixing the light crude oil with the water phase system, and stirring in a nitrogen environment to obtain the in-situ self-growing dispersion glue system; the injection process mainly comprises the step of injecting the in-situ self-growing dispersion glue system into a stratum. By combining the preparation method and the injection process, the deep regulation and control effect of the in-situ dispersion glue system can be realized, and the water-drive oil reservoir production is greatly improved.

The application relates to a method and system for producing low-carbon olefins and aromatic hydrocarbons through catalytic cracking of poor crude oil, which comprises the following steps: crude oil is separated into a light crude oil fraction and a heavy crude oil fraction through distillation; the heavy crude oil fraction is subjected to a catalytic cracking reaction in a first reactor; the light crude oil fraction is subjected to a catalytic cracking reaction in a second reactor; after the reaction products and spent catalyst are separated through gas-solid separation, the spent catalyst is regenerated through stripping and coking and then returned to the reactor for recycling; the reaction products are separated to obtain ethylene, propylene, difficult-to-convert components and other products, wherein the difficult-to-convert components are subjected to a further catalytic cracking reaction in the second reactor to obtain ethylene and propylene. When the catalytic cracking method and system are used for the catalytic cracking reaction of crude oil, ethylene, propylene and other chemical raw materials can be produced with high selectivity, and efficient utilization of crude oil resources is realized.

The present disclosure relates to a method and system for cracking wide-cut feedstock containing heavy components to produce olefins. The wide-cut feedstock is mixed with a first portion of steam, then mixed with a second portion of steam, and then introduced into a fractionating column for separation. The light fraction and the middle fraction obtained by fractionation are heated in a convection section and then introduced into different furnace tubes of a radiant section of a steam cracking device for cracking. Alternatively, part of the fraction is sent to a refinery for secondary processing to produce other products. This method can efficiently crack different fractions of light crude oil or condensate oil, has high olefin yield, saves energy, and can maximize the use of existing steam cracking technology, which is mature and easy to operate. The method eliminates the need for atmospheric and vacuum distillation devices, thereby saving investment. The method has a wide range of crude oil adaptability and improves the comprehensive utilization rate of different fractions of wide-cut feedstock.

Processes and systems for converting a wide boiling hydrocarbon mixture to chemicals herein heating a hydrocarbon feedstock to form a heated hydrocarbon feedstock. The heated hydrocarbon feedstock is separated to recover a vaporized light portion and a remaining liquid portion. The vaporized light portion is superheated and thermally cracked to recover a first cracked effluent, and the remaining liquid portion is heated and stripped to recover a stripped vapor mixture and a residue liquid portion. The stripped vapor mixture is separated to recover a vapor comprising the stripping medium and a stream comprising volatilized hydrocarbons. The volatilized hydrocarbons are heated and mixed with hydrogen then hydroprocessed to form crackable heavy hydrocarbons. The hydroprocessed effluent is separated to recover a hydroprocessed liquid stream comprising crackable heavy hydrocarbons and a hydroprocessed vapor stream comprising unreacted hydrogen. The hydroprocessed liquid stream is superheated and thermally cracked to recover a second cracked effluent.

The present application relates to a kind of solvent-resistant polyimide film and its preparation method and application, including the following steps: (1) diamine monomer and dianhydride monomer are reacted in the presence of catalyst and first solvent, obtain polyimide;The diamine monomer includes carboxyl-containing diamine monomer;(2) polyimide is dissolved in second solvent to form first polyimide solution, after film formation, phase inversion treatment is carried out, and intermediate film is obtained, and the intermediate film is treated in the organic solution containing metal ions, and support bottom film is obtained;(3) the polyimide is dissolved in third solvent to form second polyimide solution, and is coated on the support bottom film, after drying, it is treated by the organic solution containing metal ions, and the solvent-resistant microporous polyimide film is obtained.The polyimide film prepared by the above method has excellent solvent resistance, and has good hydrophobicity and good permeability to hydrocarbon solvents, and has good application prospect in the field of light crude oil separation.

The present disclosure provides methods and systems for converting wide boiling hydrocarbon mixtures to chemicals, where the methods and systems heat a hydrocarbon feedstock to form a heated hydrocarbon feedstock. The heated hydrocarbon feedstock is separated to recover a vaporized light portion and a remaining liquid portion. The vaporized light portion is superheated and thermally cracked to recover a first cracked effluent, and the remaining liquid portion is heated and stripped to recover a stripped vapor mixture and a residual liquid portion. The stripped vapor mixture is separated to recover a vapor comprising the stripping medium and a stream comprising volatilized hydrocarbons. The volatilized hydrocarbons are heated and mixed with hydrogen and then hydrotreated to form crackable heavy hydrocarbons. The hydrotreated effluent is separated to recover a hydrotreated liquid stream comprising the crackable heavy hydrocarbons and a hydrotreated vapor stream comprising unreacted hydrogen. The hydrotreated liquid is overheated and thermally cracked to recover a second cracked effluent.

The application discloses a low-viscosity light crude oil water control and oil stabilization tool, and relates to the technical field of oil and gas field development in the petroleum industry. The tool comprises a tool main body, a tool inlet, a water flow channel outlet and an oil flow channel outlet are arranged on the tool main body, the tool main body comprises a pressure drop loss channel, an oil flow channel, a water flow channel, a pressure lead channel and a low-pressure chamber, the pressure drop loss channel is communicated with the tool inlet, the pressure drop loss channel and the oil flow channel and the water flow channel form a junction, the pressure lead channel is communicated with the pressure drop loss channel, the other end is connected with a pressure-sensitive component, the pressure-sensitive component is connected with a flow channel switching component capable of extending into the junction; the low-pressure chamber is communicated with the second end of the pressure drop loss channel, the pressure-sensitive component drives the flow channel switching component to change the posture, so that the pressure drop loss channel selectively communicates with the oil flow channel or the water flow channel. The water control and oil stabilization tool can independently distinguish crude oil and water according to the different additional pressure drop losses of the crude oil and the water, so that the balanced production profile of the low-viscosity crude oil is realized, and the water content of the old oil production well is reduced.

The present disclosure generally relates to a system and method for the simultaneous transport of Crude Oil and Naphtha in a cross-country crude oil pipeline. The system includes the batch / zone of crude blend followed by lighter crude to clean and dissolve the asphaltene content of the crude blend. The naphtha batch / zone is sent securely in between the batch / zone of water. To carry out the cleaning of inner surface of the pipe various types of pigs have been used, the pigs have been designed to scrap the inner surface of the pipe and collect the foreign particle as well. The light crude oil is used to dissolve the asphaltene and resin components of crude blend, pigs are used to clean the surface and as well as a separating barrier in between the two layers.

The invention discloses an offshore oil spill emergency recovery optimization method, and belongs to the technical field of petroleum recovery, and the method comprises the following steps: obtaining offshore oil spill accident risk factors; the method comprises the following steps: constructing a three-objective function including maximizing the petroleum recovery amount, minimizing the recovery cost and minimizing the environmental influence, and solving the three-objective function by using a multi-objective genetic-particle swarm hybrid algorithm formed by combining a non-dominated sorting genetic algorithm and a particle swarm optimization algorithm to obtain the maximized petroleum recovery amount. Minimizing the recovery cost and minimizing an optimal solution set of different quantity configuration combinations with respect to different types of oil skimmers under different weights; and by adopting a fuzzy superior and inferior solution distance method, finding out a quantity configuration combination of the optimal oil skimmers under the determined weight from the optimal solution set of different quantity configuration combinations of different types of oil skimmers, namely an emergency recovery scheme for the oil spill at sea. According to the method, environmental and economic losses can be reduced, so that efficient and low-cost light crude oil recovery strategy optimization is realized.

An integrated process and associated system for converting crude oil to value-added petrochemical products. The process includes separating the crude oil into a light crude oil fraction and a heavy crude oil fraction, and treating the heavy fraction in a solvent deasphalting unit and a delayed coking unit, and then providing the light fraction and the effluent of the selected solvent deasphalting unit and delayed coking unit to a hydrotreatment unit. The method further includes separating the effluent of the hydrotreatment unit to produce a C1 fraction to the methane cracker, a C2-C4 fraction to the steam cracker, a hydrotreated light fraction to the aromatization unit, and a hydrotreated heavy fraction to the steam enhanced catalytic cracking unit. The process also includes separating the effluents of the methane cracker, the steam cracker, the aromatization unit, and the steam-enhanced catalytic cracking unit into a product stream including a BTX stream and a light olefin stream.

The utility model relates to the field of installation of water-sealed cave depot servo liquid level meters, in particular to an anti-blocking guide pipe for a servo liquid level meter, which comprises a pipe body, the pipe body is provided with a guide cavity for guiding a floater, and the first end of the pipe body is higher than the second end of the pipe body. A plurality of oil discharge grooves communicated with the guide cavity are formed in the side face, close to the second end of the pipe body, of the pipe body, the oil discharge grooves are used for discharging heavy crude oil, and a plurality of vent holes are formed in the side face of the pipe body in the axis direction of the pipe body. Heavy crude oil in the guiding cavity and the oil discharging grooves is cleaned through the cleaning mechanism, the heavy crude oil in the guiding cavity is discharged out of the guiding cavity through the oil discharging grooves, and due to the fact that the vent holes play a role in balancing air pressure inside and outside the pipe body, the liquid level heights inside and outside the pipe body are kept consistent. Light crude oil located on the outer side of the pipe body enters the guide cavity through the vent holes, replacement of the crude oil is completed, and the guide pipe is not blocked.

The invention relates to the technical field of crude oil storage tank storage, in particular to a mechanical noctilucent crude oil storage tank liquid level measuring device capable of being quickly disassembled and assembled, which comprises a lead weight, a buoy, a floater, a transmission rope and a pulley block, a crude oil storage tank comprises a tank body and a tank top, a vertical rope is connected between the tank top and the lead weight, the buoy is arranged on the outer side of the vertical rope, and a first hole is formed in the tank top. A pulley block is arranged at the top of the tank top, a transparent stroke device is arranged on the lower side of the pulley block along the outer wall of the tank body and provided with a second hole, the left end of a transmission rope and a buoy are installed together, the right end of the transmission rope and a floater are installed together, and tritium beads are installed on the floater. The device is reasonable and compact in structure, convenient to use, low in input cost, capable of accurately displaying the oil storage level in the crude oil storage tank, convenient to maintain, disassemble and assemble and capable of accurately displaying the oil storage level in the crude oil storage tank by means of the self-luminous performance of the tritium beads when the light condition is poor, and has the advantages of being safe, capable of saving labor, simple, convenient and efficient.

The invention is a system and method for reducing Scope 1 and Scope 2 CO2 emissions as well as criteria pollutant emissions from a newly constructed crude oil refinery. In preferred embodiments, the present invention processes light crude oil, uses post-combustion CO2 capture on all of the fired sources associated with Scope 1 CO2 emissions; uses on-site power generation that ties in post-combustion CO2 capture to the rest of the facility to fully capture the facility Scope 2 CO2 emissions; uses caustic treating to make refinery fuel gas H2S-free and thus furnace emissions will be SOX-free; uses emerging burner technology that significantly reduces NOX emissions below generally applied technology in the refining industry; uses available VOC capture technology on loading and unloading operations; and uses on-site solar generation to supplement power generation with zero emission supplemental power.

Processes for converting crude oil to gasoline include contacting a crude oil feed with an FCC catalyst composition in a cracking reaction zone of an FCC unit at a temperature of from 500° C. to 580° C., a catalyst-to-oil weight ratio of from 2 to 40, and a contact time of from 0.1 seconds to 60 seconds. The FCC catalyst composition includes USY zeolite impregnated with lanthanum, ZSM-5 zeolite impregnated with phosphorous, an alumina binder, colloidal silica, and Kaolin clay as a matrix material. The crude oil feed is a light crude oil, an extra light crude oil, or combination thereof, and has an API gravity of from 33 degrees to 45 degrees and a density of from 0.80 g / cm3 to 0.87 g / cm3. The contacting causes hydrocarbons in the crude oil feed to undergo cracking reactions to produce an FCC effluent that includes gasoline.