98 results about "Oil sands" patented technology

The invention relates to the technical field of oily solid treatment, and discloses an oily sludge and sand resourceful treatment method and system.The oily sludge and sand resourceful treatment method comprises the following steps that oil sludge is subjected to component analysis, and the oil content, the heavy metal type and sandy soil particle size distribution data are obtained; based on data of component analysis, adopting a microwave field to carry out dynamic pretreatment on the oil sludge, adjusting microwave parameters through coupling electromagnetic field distribution and a heat conduction model, and separating oil and sand; the pretreated sandy soil is subjected to flora combination optimization biodegradation, the flora proportion is screened based on a strain degradation efficiency matrix, and residual pollutants are degraded; and according to the biodegraded residue components, a recycling path is matched, and a regenerated material is formed. The invention provides an oil sludge and sand full-process treatment method based on microwave dynamic regulation and control, flora combination optimization and a multi-objective decision model. Integrated cooperative control of oil-sand efficient separation, multi-pollutant deep degradation and residue accurate recycling is achieved.

The invention relates to an efficient separation and extraction device for extracting rock asphalt from oil sand. The efficient separation and extraction device comprises a flotation tank, and an inflation stirring mechanism is arranged at the bottom end in the flotation tank; a foam tank is arranged in the center of the upper end of the flotation tank; a lifting defoaming device is arranged at the upper end of the foam tank; after the lifting defoaming device descends, the upper end of the foam tank is closed, and foam in the foam tank is subjected to all-directional scouring defoaming; a grating plate is arranged at the upper end of the liquid level in the flotation tank; wave blowing devices are arranged in the middles of two sides of the flotation tank; scraping mechanisms are respectively arranged at the upper end of the flotation tank and above the two grating plates; the scraping mechanism comprises a scraping plate, a sliding rail, a sliding block and a reciprocating driving assembly, the sliding rail is transversely arranged on the inner wall of the flotation tank, the scraping plate is arranged on the sliding block, and the sliding block is matched with the sliding rail to be horizontally arranged on the inner walls of the two ends of the flotation tank in a sliding mode and is driven by the reciprocating driving assembly. The scraping efficiency is improved, and the foam material containing asphalt particles can be quickly and efficiently separated and recycled.

The present application belongs to the technical field of oily sewage treatment, and specifically discloses an oily sewage treatment system for an oil sand oil treatment station, which comprises a first treatment pool, a second treatment pool and a high-temperature ethylene glycol main pipe, the two pools are connected through a connecting pipe with a sand filtering assembly, a cover is arranged on the top of the pool body, a screw pump is installed on the cover of the second treatment pool through a support, the rotor and the stator of the screw pump extend into the pool, an oil liquid inlet pipe is connected to the first treatment pool, an inclined sand screening plate is arranged in the first treatment pool, high-temperature ethylene glycol coils are arranged on the bottom of the two pools, the coils are connected with the high-temperature ethylene glycol main pipe and have a gap with the bottom of the pool, and a loading sewage discharge pipe is further arranged in the pool. The present application is aimed at the problem that the existing sewage discharge pool is prone to freezing and solidification of oil liquid in a low-temperature environment, thereby affecting secondary treatment. In the present application, the sewage enters the first treatment pool through the oil liquid inlet pipe, the sand screening plate is used to preliminarily remove sand, the oil liquid enters the second treatment pool through the connecting pipe after sand filtering, the high-temperature ethylene glycol heats the sewage through the coils, thereby reducing the viscosity of the oil liquid and preventing freezing, and the screw pump is used to extract and recycle the oil liquid.

The application provides a pre-leaching auxiliary solvent extraction method for oil sand or oil sludge containing heavy crude oil, and belongs to the technical field of product separation and solid waste treatment in the field of petroleum chemical industry. The bitumen is dispersed by using aromatic hydrocarbon first, and then extracted by using naphthenic hydrocarbon, so that good extraction effect can be achieved, a surfactant does not need to be added, the solid phase residual oil rate after treatment is less than 1wt%, and the national relevant standard is met; the pre-leaching agent and the extractant used in the application have low boiling points, are easy to distill and recover, and the recovery rate is greater than 85%. In addition, the method provided by the application has the operation temperature of room temperature (20-30 DEG C), the operation condition is mild, the method is simple, the energy consumption is low, the organic solvent and the crude oil (containing bitumen and other heavy components) can be recovered by distillation, and the resource utilization is realized.

The present application relates to the technical field of environmental protection and resource comprehensive utilization, and is an oil and gas composition and a preparation method thereof, wherein the oil and gas composition is prepared according to the following steps: first, a required amount of oil sand and oil-containing waste white clay are crushed, dried and then uniformly mixed to obtain a mixture; then, the mixture is co-pyrolyzed in an oxygen-free environment to obtain the oil and gas composition, wherein the oil and gas composition comprises pyrolysis gas and clean fuel oil. The present application obtains pyrolysis gas and clean fuel oil by co-pyrolyzing oil sand and oil-containing waste white clay, the raw materials are reasonably matched, sulfides in the oil sand react with oxides in the residue of the oil-containing waste white clay, the generation of sulfides is reduced, the porous structure of the waste white clay enhances the diffusion efficiency of pyrolysis volatiles, inhibits secondary cracking and coking, improves the quality of oil products, co-pyrolysis effectively reduces the oil content of the residue, and no other catalyst is needed, thereby realizing efficient energy recovery, low-energy-consumption operation, harmless and resource utilization of solid waste.

The invention discloses an oil layer subdivision layer sand body prediction method, device and system and a storage medium. The method comprises the steps that S1, historical seismic data and historical logging data of a preset area are acquired; s2, obtaining a sand body prediction model according to the historical seismic data and the historical logging data; wherein the sand body prediction model is a multi-dimensional parameter prediction model based on a selective kernel convolutional neural network SK-CNN; and S3, inputting the seismic data of the target area into the sand body prediction model, and predicting the oil sand body distribution of the target area through a preset equivalent weight matrix. By adopting the technical scheme of the invention, the precision of predicting the oil sand body distribution is improved.

The invention discloses a method for improving seepage and heat transfer capacity of an oil sand reservoir by using hydrophobic carbon nanotubes. The method comprises the following steps: configuring any combination of M carbon nanotubes and N carbon nanotubes with different concentrations; drilling an underground rock core of a reservoir section on site in an oil field, obtaining a standard rock core column indoors, and testing the heat conduction coefficient of the standard rock core; the standard rock core columns are soaked in the carbon nano tube nanofluid, fluid pressure is set through a supercharger, and the heat conduction coefficient of the soaked rock core columns is tested; calculating the heat conduction strengthening coefficient of each rock core column soaked by the carbon nanotube nanofluid, and drawing a scatter diagram; on the premise that the heat conduction strengthening effect and economical efficiency are comprehensively considered, the optimal type and concentration of the carbon nano tubes matched with a construction stratum are screened and determined, and a large number of carbon nano tube nanofluids of the type are configured according to site requirements; and reasonably controlling the wellhead pressure of the well I and the well P to gradually and slowly squeeze the carbon nanotube nanofluid into the oil sand reservoir. The problem that in an existing oil sand liquid squeezing technology, the heat convection effect of a reservoir is poor is solved.

Nanoflocculants are provided that are comprised of nanoparticles of titanomagnetite having anionic surface moieties associated with electrostatically bound polymerized chains of cationic polyacrylamide, further comprising lauryl sulfate moieties adsorbed to the surface of nanoparticles of the titanomagnetite nanoparticles and / or adsorbed to the bound cationic polyacrylamide polymers. These nanoflocculants combine the dual functionalities of the polyacrylamide / lauryl sulfate moieties, as well as the surface activity of titanomagnetite nanomaterials. Process are provided for making and using the disclosed nanoflocculants, including uses for flocculating intimate aqueous dispersions of solids and bitumen.

The present application relates to a kind of emulsion type capsule slow-release oil sand dissociation agent and its preparation method and application, belong to oil sand pitch technical field.Dissociation agent is by the water phase flocculating agent solution of volume ratio (10~30) and the oil phase containing emulsifier mixed and formed water-in-oil emulsion;Water phase flocculating agent solution includes the flocculating agent of concentration 10~100 mg / L, and the oil phase containing emulsifier includes the emulsifier of volume concentration 1~4%.By oil outer phase, the viscosity of pitch and oil-water interfacial tension are reduced, the calcium and magnesium ion concentration in system can be reduced after slow release of flocculating agent solution, and then the adhesion between pitch and silicon surface is weakened, on the basis of reducing the dosage of flocculating agent, further improve the dissociation efficiency of pitch on sand surface.It can not change the pH of system, prevent the disadvantage that the hydrophobicity of pitch is reduced and the difficulty of pitch droplet coagulation is increased by hot lye.

The present invention provides a method for fine characterization and evaluation of oil sand bodies based on multi-information fusion. The method comprehensively considers multiple information such as drilling, logging, production dynamics, and seismic information, identifies and divides single sand bodies based on sedimentary feature analysis, understands the correspondence between sand bodies and sedimentary change laws based on multiple information, and compares single sand bodies. The method uses well information and seismic technology to depict sand body microstructures, comprehensively judges reservoir boundaries and oil layer boundaries based on multiple information, marks the top elevation depth of a single sand layer, oil layer thickness, and sand layer thickness beside the well, comprehensively evaluates the oil and water layers encountered in drilling at different water injection development stages, judges the distribution law of oil sand bodies, standardizes the compilation of oil sand body maps, and accurately evaluates oil sand bodies. The method provides an important geological basis for the compilation of oilfield development plans, and improves the accuracy and reliability of remaining oil evaluation.

There is provided a fluid treatment separator and a method of treating fluid such as tailings from tailings ponds resulting from oil sands production. A fluid treatment separator may be used for treatment of a mixture containing at least oil and water. The separator includes a mixing chamber, an inlet and at least one outlet. The mixing chamber defines a flow path between the inlet and the at least one outlet. The inlet includes a nozzle arranged to introduce turbulence to the mixture along the flow path. At least one magnet is arranged to apply a magnetic field to the mixture along the flow path.

A method of controlling odor where the odor is generated by sources like decomposing organic matter in landfills or other sources is provided. A wood vinegar-containing solution, adjusted for the source of the odor, can be applied to the source of the odor. A method of improving the rate and completeness of settling of fine clays from oil sands tailings is also provided. Additional disclosure of a method of controlling algae bloom in a body of water is disclosed. The method includes the steps of providing a wood vinegar-containing solution, adjusting the composition of the wood vinegar-containing solution according to the states of both the body of water and the algae, respectively, then applying the wood vinegar-containing solution to the surface of a body of water, and inhibiting growth of the algae responsible for the algae bloom.

The invention discloses a sealed adsorbent oil sand treater and application thereof.The oil sand treater comprises a shell of a closed structure, three layers of slope filter screens are arranged in the shell, and a slag outlet is formed in the middle of each layer of slope filter screen; the edge of each layer of inclined surface filter screen is fixedly connected with the inner wall of the shell; an oil inlet and an oil outlet are respectively formed in the side parts of the lower end and the upper end of the shell, the oil inlet is provided with an arc-shaped oil sand baffle, the oil sand baffle is connected with an oil inlet pump through a pipeline, and the oil inlet pump is connected with a transformer through a pipeline; the oil outlet is connected with a filter bag, the filter bag is connected with the transformer, and a pressure gauge is arranged on the filter bag. The full-closed oil sand treater is arranged, centrifugal separation is performed through a multi-layer inclined surface filter screen, fine filtration is performed through a filter bag, the oil quality is remarkably improved, and the maintenance cost is reduced.

Nanoflocculants are provided that are comprised of nanoparticles of titanomagnetite having anionic surface moieties associated with electrostatically bound polymerized chains of cationic polyacrylamide, further comprising lauryl sulfate moieties adsorbed to the surface of nanoparticles of the titanomagnetite nanoparticles and / or adsorbed to the bound cationic polyacrylamide polymers. These nanoflocculants combine the dual functionalities of the polyacrylamide / lauryl sulfate moieties, as well as the surface activity of titanomagnetite nanomaterials. Process are provided for making and using the disclosed nanoflocculants, including uses for flocculating intimate aqueous dispersions of solids and bitumen.

The invention relates to an emulsion type capsule slow-release oil sand dissociation agent as well as a preparation method and application thereof, and belongs to the technical field of oil sand asphalt. The dissociation agent is a water-in-oil emulsion formed by mixing a water-phase flocculant solution and an emulsifier-containing oil phase in a volume ratio of (10-30): (70-90); the water-phase flocculant solution comprises a flocculant with the concentration of 10-100 mg / L, and the emulsifier-containing oil phase comprises an emulsifier with the volume concentration of 1-4%. The asphalt viscosity and the oil-water interfacial tension are reduced through the oil external phase, the concentration of calcium and magnesium ions in the system can be reduced after the flocculant solution is slowly released, then the adhesive force between the asphalt and the silicon surface is weakened, and the dissociation efficiency of the asphalt on the sand surface is further improved on the basis of reducing the dosage of the flocculant. The defects that the hydrophobicity of asphalt is reduced and the condensation difficulty of asphalt liquid drops is increased due to hot alkali liquor can be prevented without changing the pH value of a system.

The invention relates to the technical field of environmental protection and comprehensive utilization of resources, in particular to an oil-gas composition and a preparation method thereof.The oil-gas composition is prepared according to the following steps that firstly, required amount of oil sand and oil-containing spent bleaching clay are crushed, dried and then mixed to be uniform, and a mixture is obtained; then, the mixture is subjected to co-pyrolysis in an oxygen-free environment, and the oil gas composition is obtained and comprises pyrolysis gas and clean fuel oil. The pyrolysis gas and the clean fuel oil are obtained through co-pyrolysis of the oil sand and the oil-containing spent bleaching clay, the raw material compatibility is reasonable, sulfide in the oil sand reacts with oxide in the oil-containing spent bleaching clay residues, generation of sulfide is reduced, the diffusion efficiency of pyrolysis volatile components is enhanced through the porous structure of the spent bleaching clay, secondary pyrolysis coke formation is inhibited, and the combustion efficiency of the oil-containing spent bleaching clay is improved. The oil product quality is improved, the oil content of residues is effectively reduced through co-pyrolysis, other catalysts do not need to be added, and efficient energy recovery, low-energy-consumption operation, solid waste harmlessness and resource utilization are achieved.

There is provided a fluid treatment separator and a method of treating fluid such as tailings from tailings ponds resulting from oil sands production. A fluid treatment separator may be used for treatment of a mixture containing at least oil and water. The separator includes a mixing chamber, an inlet and at least one outlet. The mixing chamber defines a flow path between the inlet and the at least one outlet. The inlet includes a nozzle arranged to introduce turbulence to the mixture along the flow path. At least one magnet is arranged to apply a magnetic field to the mixture along the flow path.

The invention discloses a layered visual stratum simulation experiment device and an experiment method thereof, and belongs to the technical field of oil and gas exploitation experiments. The device comprises a stratified rock core simulation part which is provided with a transparent shell and an internal multi-layer rock stratum structure, a medium injection pipe is arranged in a rock stratum, and standard quartz sand is filled in a penetrating crack and used for simulating an oil sand coexistence environment; the oil dripping assembly is used for injecting simulated oil into the crack and constructing an original oil sand distribution state; the membrane structure assembly is arranged on the crack flow path and used for guiding the injected medium to flow; the layered medium injection system can independently inject media into different rock stratums; and the parameter monitoring system is used for collecting pressure and temperature data in real time. According to the invention, the whole-flow simulation from original state construction, layered liquid injection driving to flow process visual observation and data synchronous acquisition can be realized, the authenticity and systematicness of stratum simulation are obviously improved, and a reliable experimental basis is provided for optimization of an oil and gas exploitation process.

A system powers a heating element with switched direct current (DC) power. The high-speed switching of the heating element triggers lattice excitation in the element alloy, heating up the element. Multiple heating elements heat up a plate on which oil sands can be deposited. The heated plate heats up the oil sands, allowing the bitumen to flow away from the sand.

The application provides a granular dispersant assisted solvent extraction method for oil sludge / oil sand, and belongs to the technical field of chemical separation.The application provides a granular dispersant assisted solvent extraction method for oil sludge / oil sand, which comprises the following steps: mixing a solution of a granular dispersant with oil sludge / oil sand, performing solvent extraction, and separating to obtain solid phase particles and liquid phase; the granular dispersant comprises fatty alcohol polyoxyethylene ether carboxylic acid, fatty alcohol polyoxypropylene polyoxyethylene ether carboxylic acid or dodecyl benzene sulfonic acid.In the application, the oil sludge / oil sand is a mixed system of crude oil, water and mineral particles, wherein water can cause mineral particle agglomeration, and mineral particle agglomeration can bind asphaltene aggregates in the crude oil; by adding the granular dispersant, the repulsive force between the mineral particles is increased, so that the mineral particles are dispersed, thereby the bound asphaltene aggregates can be released, and the residual oil rate of the solid phase particles is reduced.

The present invention discloses an application of an iron-based catalyst in the hydro-upgrading of inferior / heavy oil in a slurry bed. In the present invention, a precipitant, an iron salt and / or an additive are oppositely sprayed into a suspension forming tower, and raw materials collide and mix to form catalyst precursor droplets, and then form ultrafine and highly dispersed powders, which serve as the iron-based catalyst. The inferior / heavy oil includes original geological reservoir heavy oil, heavy oil by-products in the process of petroleum refining and processing, heavy oil and asphalt refined from oil sands and oil shales, and tar by-products in the hot processing of heavy hydrocarbon raw materials. By adjusting the temperature gradient and atmosphere in the tower, the present invention can effectively control the catalyst phase. During the hydro-upgrading reaction process, when the catalyst contacts the reactants (heavy / inferior oil), it is in the best active state and has better hydro-upgrading ability.

The invention discloses a method for predicting oil sand seepage characteristics through a two-dimensional digital core. The method comprises the following steps: step 1, acquiring a core grayscale image of oil sand by using an environmental scanning electron microscope; 2, denoising processing is carried out on the core gray level image of the oil sand; and step 3, carrying out binarization processing on the denoised rock core grayscale image to obtain a binary image of oil sand. And 4, vectorizing the binary image of the oil sand to obtain a vector diagram of the oil sand. And 5, calculating the porosity and the effective porosity of the oil sand by using COMSOL software. And 6, carrying out a two-dimensional digital rock core seepage simulation experiment by using the COMSOL. The relationship between the oil sand porosity and the rock seepage characteristics is established, and the seepage characteristics of the oil sand can be quickly predicted only by simply carrying out two-dimensional digital core simulation.

The present disclosure provides systems, processes, devices and techniques for pre- treating oil sands fine tailings in order to remove coarse debris from oil sands fine tailings and produce screened oil sands fine tailings, the screened oil sands fine tailings having improved reactivity and / or mixability with chemicals in a subsequent chemical tailings treatment operation that can include dewatering. The pre-treatment screening techniques can further produce screened oil sands fine tailings thereby enabling a reduction in terms of damage, clogging and / or plugging of downstream equipment used in the downstream tailings treatment operation, which can include flocculation and dewatering.

The invention provides a method for evaluating the oil washing efficiency of a surfactant. According to the method, the oil content of the oil sand is measured by adopting a thermogravimetric analysis method, and the oil washing efficiency of the surfactant is evaluated by calculating the difference of the oil content before and after the oil sand is washed by the surfactant. According to the method, the oil washing efficiency of the surfactant can be simply, conveniently and rapidly evaluated, errors among multiple groups of results of the same surfactant are small, parallelism is good, the oil washing efficiency of different surfactants has obvious difference, the results of the oil washing experiment method are reliable, and the method is suitable for large-scale popularization and application. The oil washing effects of different surfactants can be effectively evaluated.

Non-hydraulically reactive blended particulate compositions for use in making low carbon blended cement or low carbon concrete include a pozzolanic component having a first D90 and a mineral filler component having a second D90 greater than the first D90 dry blended without intergrinding, wherein the composition is free of hydraulic cement. The pozzolanic component can have a D90 less about 45 μm and the mineral filler can have a D90 greater than about 45 μm. The pozzolanic material can be fly ash, bottom ash, metallurgical slag, silica fume, metakaolin, volcanic ash, natural pozzolan, calcined shale, calcined clay, and / or ground glass. The mineral filler component can be aggregate fines, quarry fines, limestone powder, granite fines, stone dust, rock dust, marble dust, mine tailings, pulverized bottom ash, pulverized metallurgical slag, ground recycled concrete, pulverized shale from shale oil extraction, or pulverized sand from tar sand extraction.

Non-hydraulically reactive blended particulate compositions for use in making low carbon blended cement or low carbon concrete include a pozzolanic component having a first D90 and a mineral filler component having a second D90 greater than the first D90 dry blended without intergrinding, wherein the composition is free of hydraulic cement. The pozzolanic component can have a D90 less about 45 μm and the mineral filler can have a D90 greater than about 45 μm. The pozzolanic material can be fly ash, bottom ash, steel slag, silica fume, metakaolin, volcanic ash, natural pozzolan, calcined shale, calcined clay, and / or ground glass. The mineral filler component can be aggregate fines, quarry fines, limestone powder, granite fines, stone dust, rock dust, marble dust, mine tailings, pulverized bottom ash, pulverized metallurgical slag, ground recycled concrete, pulverized shale from shale oil extraction, or pulverized sand from tar sand extraction.

Non-hydraulically reactive blended particulate compositions for use in making low carbon blended cement or low carbon concrete include a pozzolanic component having a first D90 and a mineral filler component having a second D90 greater than the first D90 dry blended without intergrinding, wherein the composition is free of hydraulic cement. The pozzolanic component can have a D90 less about 45 μm and the mineral filler can have a D90 greater than about 45 μm. The pozzolanic material can be fly ash, bottom ash, steel slag, silica fume, metakaolin, volcanic ash, natural pozzolan, calcined shale, calcined clay, and / or ground glass. The mineral filler component can be aggregate fines, quarry fines, limestone powder, granite fines, stone dust, rock dust, marble dust, mine tailings, pulverized bottom ash, pulverized metallurgical slag, ground recycled concrete, pulverized shale from shale oil extraction, or pulverized sand from tar sand extraction.

The invention discloses a chemical flooding and encryption synergistic interaction in-situ reversing displacement experiment method. The method comprises the following steps that an experimental rock core is manufactured, manufacturing tools comprise a rock core holder body, a square-head pressing plug column and a flat-head bolt, a mixture of natural oil sand particles and resin adhesive is poured into a rock core square cavity, the square-head pressing plug column is inserted into the rock core square cavity, compaction is conducted, and the experimental rock core is manufactured; the core holder comprises a core holder body, a pressing ring, a sealing plunger and a rubber tube connector, the core is vacuumized to be saturated with water and oil and then placed in a core square cavity, the core is sealed and then subjected to a water drive or chemical drive direction-changing displacement experiment, displacement and pressure maintaining are conducted by closing a valve, and direction-changing displacement is achieved by opening and closing the valve; and then carrying out under-pressure nuclear magnetism or CT experiment test on the experimental rock core, and comparing the displacement effect before reversing, so as to demonstrate the chemical encryption synergistic interaction mechanism from the microcosmic use degree. According to the invention, the experimental error is reduced, and the displacement experiment effect is improved.

The utility model relates to the technical field of oil sand transfer, in particular to an oil sand transfer bag, which improves the transfer efficiency and safety and reduces the risk of environmental pollution. Comprising; a storage cavity is formed in the oil sand transfer bag, and a feeding opening is formed in the top end of the oil sand transfer bag; the hoisting assembly is arranged outside the oil sand transfer bag in a sleeving manner and is used for hoisting the oil sand transfer bag; the sealing mechanism is arranged on the feeding opening of the oil sand transfer bag and used for sealing the feeding opening; the hoisting assembly further comprises a plurality of vertical belts which are circumferentially arranged, longitudinally wound and used for bearing the weight of the oil sand transfer bag. The transverse belts are transversely wound and are used for bearing transverse tension of the oil sand transfer bag after the oil sand transfer bag bears the oil sand; the two lifting lugs are symmetrically arranged on the vertical belt and are respectively arranged on two sides of the oil sand transfer bag; and the dumping lifting lugs are arranged on the group of transverse belts at the bottom and are arranged at the side ends of the oil sand transfer bags.

The present application belongs to the technical field of oil-water separation equipment, and discloses an oil-sand oil produced water oil removal device, aiming at solving the problems of liquid disturbance destroying oil-water stratification, low separation efficiency and sampling valve easy to scale and leak in the prior art. The device comprises a tank body and a liquid inlet steady flow unit, the liquid inlet steady flow unit comprises a containing cavity, an arc-shaped buffer plate, an annular baffle and a conical hopper. Through the structure of the liquid inlet steady flow unit, the produced water enters from the top opening, is preliminarily slowed down by the arc-shaped buffer plate, and is guided to the bottom of the containing cavity through the flow channel formed by the annular baffle and the conical hopper, so as to effectively isolate the liquid disturbance and avoid impacting the original liquid in the tank. Finally, the produced water flows into the tank body smoothly from the overflow port. The tank is sequentially provided with a flow straightener and a two-stage packing type gas-liquid separator, so as to realize gas-liquid and oil-water separation, effectively protect the formed oil-water gravity stratification interface, and improve the oil-liquid separation efficiency.