425 results about "Residual oil" patented technology

The invention relates to the technical field of machine vision image analysis, in particular to a lubricating oil abrasive particle quality analysis method and system based on machine vision, and the method comprises the steps: obtaining a thickness distribution diagram of an oil residual layer on the surface of an abrasive particle through a gray ratio relation between a first transmission image and a second transmission image; performing optical compensation on the first transmission image to obtain a final compensation image, and performing phase consistency edge detection to obtain an abrasive particle edge enhanced image; calculating the polarization reflectivity ratio of each abrasive particle area; extracting the mirror reflection intensity difference of each abrasive particle in the abrasive particle edge enhanced image; and when the abrasive particles are analyzed as metal attributes according to the polarization reflectivity ratio and the specular reflection intensity difference, identifying the morphological characteristic parameters of the abrasive particles, matching the morphological characteristic parameters with a pre-stored abrasive particle wear characteristic library, and outputting a quality evaluation report of the lubricating oil according to a matching result. The influence of oil film interference is effectively inhibited, the metal particles are accurately distinguished, and high-precision analysis on the lubricating oil abrasive particles is realized.

The invention discloses an efficient sealing valve in a high-pressure environment, and relates to the technical field of sealing valves. Comprising a main body, a filter plate is fixed in the main body, a cleaning assembly driven by a motor is arranged on one side of the filter plate, an opening and closing assembly is arranged at the bottom of the cleaning assembly, a blocking assembly is arranged in a limiting frame, and the blocking assembly is rotationally connected with a first blocking plate and a second blocking plate. According to the device, a second bevel gear rotates to drive a connecting shaft to rotate, then a first fixing rod and a second fixing rod are driven to move in cavities formed in the two sides of the interior of a connecting frame, and therefore a rotating shaft and a rotating ring are driven to rotate; the first blocking plate and the second blocking plate rotate to block the residual oil sample, so that the effect of preventing the residual oil sample from slowly seeping out of the nozzle due to the release of system pressure or the action of self gravity after the valve is closed is achieved.

The invention discloses a residual oil quantitative evaluation method and device, a medium and computing equipment. The method comprises the steps that a ship bottom type remaining oil distribution mode of the homogeneous thin layer bottom water reservoir is determined; obtaining the strong water flooding radius under various bottom water thicknesses in the double-high development stage; obtaining quantitative expressions of remaining oil enrichment areas under various bottom water thicknesses; and obtaining the weak water flooding thickness H of each position of the oil reservoir. The residual oil quantitative evaluation method comprises the following steps: establishing a standard model under different bottom water thicknesses by acquiring strong water flooding radiuses under various bottom water thicknesses in a double-high development stage, and determining a classified bottom water reservoir mixed source displacement mode; aiming at the difficulty in shaping and quantitative description of'ship bottom type 'residual oil, positioning of a potential enrichment area is carried out based on water logging interpretation of a passing well, and rapid quantitative expression of the residual potential area is realized by acquiring quantitative expressions of the residual oil enrichment area under various bottom water thicknesses, so that a reliable basis is provided for accurate potential tapping of residual oil in a double-high stage; and the process is simple and efficient.

The invention discloses a remaining oil distribution prediction method and system, a control device and a storage medium, and the method comprises the steps: obtaining a multi-scale fusion feature vector according to wide-area apparent resistivity data, seismic attribute data, optical fiber time sequence signal data, nano tracer tracking data and pore network point cloud data, inputting a physical constraint neural network to obtain a residual oil saturation initial value and a pressure gradient initial value of each region of the target layer, wherein a loss function comprises data fitting item loss, Darcy law physical constraint loss and mass conservation constraint loss; the real-time water content and the bottomhole flowing pressure of the production well serve as observation data, and a static parameter correction value, a remaining oil saturation correction value and a pressure gradient correction value are obtained through correction based on an ensemble Kalman filtering algorithm; the static parameter correction value and the pressure gradient correction value are fed back to a physical constraint neural network for loss function updating; and determining a remaining oil distribution result of the target layer. According to the invention, the accuracy and timeliness of residual oil distribution prediction can be improved.

The invention belongs to the technical field of nondestructive testing, and relates to a method for imaging residual oil in a powder metallurgy component based on pulse thermal excitation, which comprises the following steps: applying preheating disturbance pulse to a target area to generate a pre-excitation thermal field; applying a main detection pulse to the same target area at an interval of a preset time lag, and generating a transient composite hot spot; obtaining the whole process from formation to cooling dissipation of the transient composite hot spot, and generating a dynamic thermal field image sequence; images in a specific time window are extracted, and a key stage hot spot evolution image set is generated; the physical state of residual oil in the target area is judged, and a residual oil state label is generated; performing mapping association on the residual oil state label generated at each detection position and the two-dimensional coordinate of the residual oil state label to generate a residual oil state visual image; according to the invention, the problem of missing detection or misjudgment caused by difficulty in effectively amplifying weak thermal physical property difference between oil liquids in different states due to single excitation mode in the existing thermal imaging technology is solved.

The invention discloses a three-dimensional oil saturation imaging method and system based on multi-frequency electromagnetic-acoustic wave coupling, and the method comprises the following steps: transmitting an electromagnetic wave signal to a stratum through a multi-frequency electromagnetic array, and receiving an electromagnetic response signal reflected by the stratum; synchronously transmitting high-frequency sound wave pulses, collecting sound wave reflection signals and extracting stratum interface information; the formation resistivity distribution is calculated based on the electromagnetic response signal, the formation boundary is constrained by combining the sound wave reflection signal, and the resistivity multiplicity is eliminated through a joint inversion algorithm; utilizing a deep learning model to fuse electromagnetic and sound wave data, and constructing an oil saturation three-dimensional grid model; and three-dimensional saturation distribution is dynamically displayed through a visual platform, and injection-production scheme optimization is guided. The method is high in resolution, low in condition dependence degree, low in cost and high in modeling precision, achieves three-dimensional perspective oil reservoir through multi-physics field coupling and high-precision three-dimensional modeling, is suitable for remaining oil potential tapping, unconventional oil and gas development and carbon sequestration monitoring, and facilitates intelligent oil field construction.

The invention discloses an easy-to-clean electric catching oil remover, and particularly relates to the technical field of rubber additive product industrial waste gas treatment, the easy-to-clean electric catching oil remover comprises an electric catching oil remover support, a cleaning water tank support, a low-pressure nitrogen end, an oil-containing waste gas end, a low-pressure steam end, a water source end, a waste water end and a purified waste gas treatment device; in the cleaning stage, steam is introduced into the low-pressure steam end to heat water in the cleaning water tank main body, and meanwhile, the water source end conveys a water source to form cleaning liquid; cleaning liquid uniformly washes accumulated oil on the surface of a honeycomb electrode tube through a washing spraying opening which is made of a stainless steel material and has a nozzle aperture of 1mm and a spraying angle of 120 degrees downwards in a rotary spraying manner, and the uniform and powerful spraying manner can thoroughly remove oil stains on the surface of an electrode, so that electrode blockage caused by oil stain residues is avoided, and the service life of the electrode tube is prolonged. And the whole cleaning process does not need to be stopped, so that the accumulated oil of the honeycomb electrode can be cleaned on line without stopping, the continuous and efficient operation of the electric capturing oil remover is ensured, and the production efficiency is improved.

The invention relates to the technical field of artificial intelligence prediction and oilfield development, and discloses a residual oil distribution prediction method based on geological data, comprising the following steps: step 1, acquiring geological data and production data of a target area at n moments; step 2, preprocessing the data obtained in the step 1, and then performing feature extraction and fusion to obtain a fused feature vector; step 3, using an improved XGBoost and convolutional neural network fused hybrid model as a prediction model, and constructing the prediction model; 4, verifying and optimizing a prediction result of the prediction model, and predicting the distribution of the remaining oil through the prediction model; according to the method, the permeability is corrected in the process of obtaining the geological data and the production data of the target area through the first step, the second step and the third step, so that the accuracy of the data is improved, a data foundation is laid for follow-up prediction of the remaining oil distribution, and the remaining oil distribution is better predicted.

The utility model relates to an electromagnetic heating waste oil deslagging system, and belongs to the field of waste oil regeneration, the electromagnetic heating waste oil deslagging system comprises a reaction kettle, a circulating pump, an electric heater, an electric heating groove, a slag oil tank, a regulating valve, a switch valve and an extraction piece, the circulating pump is communicated with the reaction kettle, and the electric heater is communicated with the circulating pump and is communicated with the reaction kettle; the electric heating tank is arranged on the circulating pump in a communicating mode, the residue oil tank is arranged on the electric heating tank in a communicating mode, the adjusting valve is arranged at the communicating position of the circulating pump and the electric heating tank, the switch valve is arranged at the communicating position of the electric heating tank and the residue oil tank, and the extraction part is arranged on the residue oil tank and used for discharging residue oil in the electric heating tank into the residue oil tank. The waste oil regeneration device has the advantages that the probability of coking and blocking of waste oil is reduced, time consumed for equipment maintenance is shortened, the heating temperature of the waste oil is reasonably distributed through the electric heater and the electric heating groove, the heating efficiency is improved, energy consumption is reduced, and the problems of low production efficiency and high recovery cost in the waste oil regeneration process are effectively solved.

The invention belongs to the technical field of oil field downhole operation, and discloses a sucker rod oil scraping anti-pollution device which comprises a Christmas tree upper flange, a Christmas tree lower flange, a Christmas tree upper flange, a Christmas tree lower flange and a Christmas tree lower flange, mounting a jackscrew which is connected to the upper flange of the Christmas tree; the oil collecting barrel is connected with the upper flange of the Christmas tree through the mounting jackscrew; the oil scraping assembly comprises an installation disc, a triangular cover, an octagonal beef tendon oil scraping disc, beef tendon strips, a split type elastic contraction oil scraping rubber core and an annular rubber ring, gas pressure generated when a sucker rod moves can be effectively absorbed and buffered, gas in a cavity is stably guided out, the phenomenon of crude oil splashing is eradicated, meanwhile, large-area oil dirt stripping is achieved through the flexible beef tendon strips, and the oil scraping efficiency is improved. The upper layer split type elastic contraction oil scraping rubber core is matched with a dynamic pressing structure to scrape residual oil films, the oil scraping efficiency and the sealing performance are remarkably improved through double protection, the problem of pollution caused by oil contamination leakage is solved, and a reliable guarantee is provided for clean production of an oil field.

The utility model relates to the technical field of oil-containing wastewater treatment, and discloses an oil-removing device for oil-containing wastewater treatment of an oil and gas field, which comprises a tank body, and a cleaning mechanism and an oil filtering mechanism are arranged in the tank body; the cleaning mechanism comprises a tank cover, a connecting frame and a feeding pipe are fixedly connected to the top of the tank cover, an electric push rod is fixedly connected to the interior of the connecting frame, a scraping plate is fixedly connected to the output end of the electric push rod, a feeding frame is fixedly connected to the top of the feeding pipe, and a filter screen is fixedly connected to the inner wall of the feeding frame. The oil filtering mechanism comprises a supporting ring, and an oil-water separation filter element is arranged at the top of the supporting ring; a discharge pipe is fixedly connected to the bottom of the tank body, and a first switch valve is mounted in the discharge pipe. According to the oil-removing device for oil-containing wastewater treatment of the oil and gas field, residual oil stains and impurities on the inner wall of the tank body are automatically cleaned, the labor intensity of operators is reduced, the cleaning effect is guaranteed, and secondary pollution is avoided.

The invention discloses an oil gas treatment delayed shutdown method and system, electronic equipment and a medium, and relates to the technical field of data processing. The method comprises the steps that the oil tank volume, the oil volume and the rated treatment capacity of an oil-gas treatment device are obtained, and the oil-gas space volume is calculated; after the processing device is started, the processed oil gas amount is calculated by monitoring the pressure and the operation time; when the pressure is reduced to the shutdown pressure for the first time, the remaining oil gas space volume is calculated; determining a pressure difference coefficient according to oil tank and pipeline parameters, and calculating an unrecovered oil gas quantity; calculating delayed downtime based on the unrecovered amount and the rated treatment amount; and finally, continuously operating the device according to the delay time to recover the residual oil gas, and stopping after timing is finished. According to the method, through accurate calculation and delay control, it is ensured that oil gas is fully recycled, and the recycling efficiency is improved. By implementing the technical scheme provided by the invention, the evaluation accuracy of the delayed shutdown opportunity of oil and gas treatment can be improved.

The invention belongs to the field of porous medium multiphase flow research, and particularly relates to a three-dimensional micro-fluidic multiphase flow chip experimental platform based on a vibration condition and an experimental method of the three-dimensional micro-fluidic multiphase flow chip experimental platform based on the vibration condition. The device can simulate the micromechanism of oil-water-gas three-phase flow, and the micro-fluidic chip is arranged on the three-dimensional vibration table, so that the dynamic change of a multi-phase fluid interface is observed in real time through the high-speed camera under different vibration frequencies and amplitude conditions, and the influence of the dynamic change on the flow characteristics is analyzed. Through experiments, the influence of vibration conditions on residual oil mobilization can be discussed, and a microscopic basis is provided for optimizing a vibration-assisted oil extraction technology. A novel research tool and an experiment platform are provided for improving the recovery efficiency and developing complex reservoirs, and the development of the vibration oil extraction technology is promoted.

The invention belongs to the technical field of oil exploitation, and particularly relates to a nano bubble generator, a nano bubble preparation method and a method for improving recovery efficiency by using nano bubbles, the nano bubble generator comprises a bubble generator main body, a containing cup and at least one bubble water filter plate, the mesh apertures of the adjacent bubble water filter plates are different, and the containing cup is arranged in the containing cup. The mesh diameter of the bubble water filter plate close to the water inlet end is larger than that of the bubble water filter plate close to the water outlet end. According to the bubble water filter plate disclosed by the invention, nano bubble water is converted into the nano bubble water through an extrusion shearing effect and is extruded out of the meshes, large bubble water can be converted into the nano bubble water, and the gas mixing uniformity is good; by using the nano-bubble method, the injection pressure during water flooding is effectively improved, the swept volume is enlarged, the flowing direction of oil and water is microscopically regulated and controlled, the oil washing efficiency is improved, and residual oil which is difficult to extract by conventional water flooding is effectively displaced.

The invention discloses a method for predicting porosity-permeability dynamic evolution of a carbon sealed storage layer of an abandoned oil reservoir, and belongs to the technical field of carbon sequestration of abandoned oil and gas reservoirs, and the method comprises the following steps: carrying out a visual microfluidic experiment of CaCO3 heterogeneous precipitation under a residual oil condition; carrying out precipitation characteristic parameter extraction according to a visual micro-fluidic experiment result; calculating an effective flow porosity, a reactive bending factor and an interface reaction correction factor on the basis of the precipitation characteristic parameters, and further performing multi-physics field coupling correction on the Kozeny-Carman model to obtain a permeability dynamic evolution model; and performing reservoir permeability evolution prediction by adopting the permeability dynamic evolution model. According to the method, high-precision prediction of porosity-permeability dynamic evolution of the abandoned oil and gas reservoir carbon seal storage layer is realized, multiphase flow and solute transport provide a flow velocity and concentration field for geochemical reaction, the reaction feeds back physical property influencing parameters by changing mineral volume and pore structure, the physical property parameters update the flow field in turn, and the porosity-permeability dynamic evolution of the abandoned oil and gas reservoir carbon seal storage layer is predicted. And thus, dynamic evolution is realized.

The invention provides a method and a device for determining a residual oil film thickness evaluation model. First evaluation models corresponding to the influence types are constructed at least based on the multiple first sample parameter values of the multiple influence types; obtaining a first output parameter value of the first sub-model corresponding to the influence type and a first evaluation parameter value of the first evaluation model corresponding to the influence type; obtaining second output parameter values of the corresponding influence types based on the first evaluation parameter values of the various influence types; constructing a second evaluation model based on the second output parameter values of the multiple influence types and the second weight variables of the corresponding influence types; second weight variable values of multiple influence types are obtained; generating a predicted oil film thickness value based on the second weight variable values of the multiple influence types and the first output parameter values of the corresponding influence types; and when the predicted oil film thickness value is verified to be valid, determining that the first evaluation model and the second evaluation model are valid. And a residual oil film thickness evaluation model is accurately determined.

The invention provides a recovery system and a recovery method for edible vegetable oil production residues, and belongs to the technical field of edible vegetable oil processing. Comprising a multi-stage heating assembly, a cooling assembly and a sealed storage tank, the multi-stage heating assembly is used for continuously heating the edible vegetable oil-making residues so as to gasify the residual oil in the residues; an exhaust port of the multi-stage heating assembly is connected with an air inlet of the cooling assembly, so that gasified residual oil is condensed into liquid oil through the cooling assembly; an oil outlet of the cooling assembly is connected with an oil inlet of the sealed storage tank so that liquid oil can be conveyed into the sealed storage tank to be stored. According to the method disclosed by the invention, the residual oil in the oil-making residues of the edible vegetable oil is fully extracted by utilizing a unique multi-stage heating and gasification condensation process, so that the efficient recovery of the residual oil in the oil-making residues of the edible vegetable oil is realized, the resource utilization rate is greatly improved, the waste discharge is reduced, and the originally discarded residues are turned into wealth; and extra economic value is created.

The invention discloses a self-cleaning type precession vortex gas flowmeter, and belongs to the field of gas flow measurement. Comprising a shell and an extension pipe, a buffering mechanism is arranged on the gas inlet side of the extension pipe and comprises a filtering cavity, a multi-layer filtering assembly for intercepting liquid drops and oil mist in impurity-containing gas is arranged in the filtering cavity, a supplementing mechanism is arranged at the top of the filtering cavity to provide a new adsorption filter element, and a dissolving box is fixedly connected to the bottom of the filtering cavity; a shearing and crushing module for cleaning intercepted oil mist and heavy oil is arranged at the inner top of the dissolving tank; the multi-layer filtering assembly is used for three-stage filtering, and oil mist and large-particle liquid drops carried in gas are prevented from directly entering the shell and being attached to the surface of the sensor to affect measurement of the flow meter; when the adsorption filter element is saturated and needs to be replaced, the shearing and crushing module is used for extrusion operation, residual oil mist is further treated, subsequent recovery or treatment is facilitated, the requirement for manual cleaning is reduced, and the operation and maintenance cost is reduced.

The invention is suitable for the technical field of aerosol generation equipment, and provides an oil storage cotton design method, device and equipment, a storage medium and a program product, and the method comprises the steps: obtaining a residual oil rate parameter corresponding to sample aerosol equipment, and obtaining a structure parameter corresponding to oil storage cotton in the sample aerosol equipment; and obtaining a first parameter calculation model based on a linear relationship between the structure parameter and the residual oil rate parameter.

The invention discloses an oily sludge thermal desorption treatment system and a treatment process, the oily sludge thermal desorption treatment system comprises a tank body, the feeding end of the tank body is rotatably provided with a connecting sleeve, the oily sludge thermal desorption treatment system also comprises a feeding pipe, the feeding pipe is fixedly connected in the connecting sleeve, one end of the feeding pipe is sleeved with a material guide pipe, the material guide pipe is movably arranged on the feeding pipe, one end of the connecting sleeve is provided with a cleaning piece, and the cleaning piece is in transmission connection with the tank body. According to the device, the movement of the material guiding pipe is controlled through oil sludge in the feeding pipe, so that the material guiding pipe extends into the tank body along the feeding pipe, the oil sludge is extruded out in a strip shape through the discharging hole, the strip-shaped oil sludge extruded out of the material guiding pipe is broken through the cleaning piece, and the phenomenon that the oil sludge is accumulated at the feeding end of the tank body in a lump mode is reduced; the accumulated oil sludge is prevented from being coked on the inner wall of the high-temperature tank body, the material guide pipe is driven by the cleaning piece to rotate along the axis of the feeding pipe, the inner wall of the feeding pipe is cleaned through the arc-shaped strip fixedly connected in the material guide pipe, and the phenomenon that the feeding pipe is blocked due to the fact that the residual oil sludge is dried and caked in the feeding pipe is avoided.

The invention relates to the technical field of petroleum processing, and particularly discloses a heavy oil efficient delayed hydrocracking system and process method.Raw oil, a retarder and hydrogen are mixed at the front end of an inlet of a heating furnace, heated and then driven by the hydrogen to rapidly flow into a delayed hydrocracking reactor; the retarder and hydrogen synergistically act to maintain stable properties in the material conveying process, and the hydrocracking reaction is concentrated in the reactor; and distilling the reaction product through a fractionating tower to obtain different fractions, and refluxing 85-90% of residual oil for retreatment. The retarder is introduced, a conventional hydrogen feeding mode is changed, hydrogen drives materials to rapidly flow, the retention time of the materials in a furnace tube and a pipeline is remarkably shortened, the retarder promotes hydrogen to be activated to form hydrogen free radicals, and the retarder and the hydrogen free radicals interact to maintain property stability of the materials in the transportation process; the hydrocracking reaction is carried out in a delayed hydrocracking reactor. Raw material loss is avoided, green coke of a reaction system is reduced, and long-period stable operation of the device is guaranteed.

This application discloses a method, apparatus, equipment, and storage medium for locating remaining oil. The method includes: acquiring segmented displacement state data of well groups and boundary transition trajectory data of the development stage; obtaining a continuous potential displacement state sequence by boundary interception, trajectory insertion, and time concatenation; obtaining a continuous displacement state sequence over all time periods by using a three-layer fully connected decoding method mirroring the encoding layer of the preceding depth Koopman autoencoder network; extracting the state at six consecutive sampling times at the boundary to form a local continuous change sequence; obtaining displacement obstruction judgment parameters through two-layer fully connected compression mapping; generating two types of markers through threshold comparison, cross-screening contradictory well groups, associating spatial locations, and merging to obtain the location result. This application can accurately distinguish two types of easily confused areas, and the location result can directly support the selection of sites and potential tapping decisions for later-stage oilfield development measures.

The utility model relates to the technical field of petrochemical engineering, and particularly discloses a cracking tail oil heat recovery system of a slurry bed residual oil hydrogenation device, which comprises a fractionating tower, a fractionating tower bottom pump, an aviation kerosene tower bottom heat exchanger, a debutanizer bottom heat exchanger, an isopentane tower bottom heat exchanger and a tail oil cold feed preheater, the fractionating tower bottom pump, the aviation kerosene tower bottom heat exchanger, the debutanizer bottom heat exchanger, the isopentane tower bottom heat exchanger and the tail oil cold feed preheater are sequentially arranged on the fractionating tower, and a tail oil discharge pipeline is arranged on the tail oil cold feed preheater. The tail oil temperature of the cracking device is reasonably utilized, the heat exchange process is optimized, efficient recovery of tail oil heat is achieved, the potential safety hazard of leakage of a heat exchange system of the isopentane tower is eliminated, temporary shutdown overhaul of the device caused by leakage of a heat exchanger is avoided, meanwhile, effective and stable control over the tail oil temperature is achieved, and the service life of the device is prolonged. The operation cost of tail oil air cooling is saved, and safe and stable operation of a heat exchange system of the device is effectively guaranteed.

The invention relates to the technical field of pipeline energy consumption management and control, and particularly discloses a pipeline transportation energy efficiency monitoring system for high pour point oil transportation, which is characterized in that single-mode optical fibers are coaxially laid on the inner wall of a long-distance pipeline managed by a target pump station along the x-axis direction of the pipeline, and narrow-pulse-width laser pulses with set frequency are emitted to the single-mode optical fibers by a pump station OTDR host; recording an OTDR curve of the scattered light power changing along with time; determining the residual quantity of each oil product residual position; comprehensively evaluating the compatibility index of the residual oil product at each oil product residual position in the long-distance pipeline and the oil product to be transported; meanwhile, the residual pressure is provided according to the preorder pump station corresponding to the target pump station, and then the oscillogram of the working power corresponding to the target pump station is generated, so that the safety and efficiency of the long-distance pipeline are improved, and the oil product transportation process is optimized through an intelligent monitoring and adjusting mechanism. An efficient and reliable management tool is provided for a pipeline operator, the operation cost can be reduced, the environmental influence is reduced, and the overall performance of the system is improved.

The invention discloses a steel rolling oil sludge deoiling method based on vacuum treatment, and belongs to the technical field of metallurgical industry solid waste treatment. The deoiling method comprises the steps that dried cold-rolled oil sludge and sintered return mine particles are stirred and mixed, pretreated oil sludge is obtained, and the component of sintered return mine comprises Fe3O4; mixing the pretreated oil sludge with an extraction agent, and then carrying out solid-liquid separation to obtain an oil-containing solvent on the upper layer and a deoiling solid-phase product on the lower layer; and carrying out vacuum distillation on a deoiled solid-phase product obtained by extraction to obtain finally treated oil sludge. According to the scheme, the cold-rolled oil sludge and the sintered return mine particles are stirred and mixed, and the separated grease can be recycled through a synergistic process of breaking agglomeration through impact and magnetic attraction, permeating a solvent and performing vacuum separation; meanwhile, the residual oil rate of the oil sludge and sintered return mine mixed solid phase obtained after vacuum distillation treatment is smaller than 1 wt.%, and deep deoiling is achieved.

The invention relates to the field of oilfield chemistry, in particular to an amphiphilic block poly-surfactant containing a surfactant functional group and a preparation method of the amphiphilic block poly-surfactant. Through molecular structure design, a self-made amphiphilic block copolymer macromonomer is added, a side chain of the macromonomer has a hydrophobic polycaprolactone block and a hydrophilic polyethylene glycol block at the same time, and the side chain with the built-in amphiphilic block integrates strong emulsification stripping and hydrophobic association effects at the same time; due to the strong emulsifying and stripping capacity to residual oil after water flooding and the deep profile control capacity to a reservoir, the recovery efficiency of an oil reservoir after water flooding is remarkably improved.

The utility model relates to an automatic asphalt sampler cleaning machine which can effectively solve the problems that manual cleaning efficiency is low, and particularly when a large number of samplers need to be cleaned, manual cleaning can consume a large amount of time and manpower and is poor in safety. The high-temperature-resistant anti-corrosion pump is communicated with a plurality of first branch pipes arranged below a support in the middle of the shell through a first pipeline and communicated with a plurality of second branch pipes arranged at the top of the shell through a second pipeline, the first branch pipes and the second branch pipes are provided with spray heads, and the high-temperature-resistant anti-corrosion pump is communicated with a liquid storage tank through a pipeline. Asphalt or residual oil adhering to the inside and the outside of the wall of the sampler is dissolved through heating of solvent oil and washing of high-pressure spray, the trouble that cleaning is difficult and the cleaning speed is low in the traditional manual cleaning process is completely replaced, the sampling basket can be washed and cleaned, and the automatic asphalt sampler cleaning machine is an innovation of the automatic asphalt sampler cleaning machine.

This invention belongs to the field of oilfield downhole operation technology and discloses a sucker rod oil scraping and anti-pollution device, including: a pre-works flange for sealing and covering the sucker rod; a mounting screw connected to the pre-works flange; and an oil collection tank connected to the pre-works flange via the mounting screw. The oil scraping assembly includes: a mounting plate, a triangular cover, an octagonal elastic scraping disc, elastic strips, a segmented elastic contraction scraping core, and an annular rubber ring. It can effectively absorb and buffer the gas pressure generated during sucker rod movement, smoothly discharge the gas inside the cavity, and prevent crude oil splashing. Simultaneously, the flexible elastic strips achieve large-area oil removal, and the upper segmented elastic contraction scraping core, combined with a dynamic pressing structure, scrapes away residual oil film. This dual protection significantly improves scraping efficiency and sealing performance, solves the problem of oil leakage and pollution, and provides a reliable guarantee for clean production in oilfields.

The utility model relates to an oil dipstick cleaning tool which comprises a cleaning cup, a supporting rod and cleaning cloth, the supporting rod is horizontally arranged in the cleaning cup, the supporting rod is wrapped with the cleaning cloth, and degreasing agent solution is arranged in the cleaning cup. According to the oil dipstick cleaning tool, the cleaning cup is used for manufacturing the special cleaning tool for the oil dipstick, the oil dipstick with oil dirt is inserted into the cleaning cup to be soaked, the oil dipstick can be directly used after residual oil dirt is scraped off on the supporting rod through the cleaning cloth when the oil dipstick is used next time, and the oil dirt does not need to be worried about falling everywhere. The oil stain cleaning efficiency is improved, and the labor intensity of crude oil water content test work is relieved.

The application discloses a shale oil reservoir core micro-percolation model and a preparation method and application thereof, and belongs to the technical field of oilfield development experiment researches.The core micro-percolation model comprises a rock sample and adhesive glass sheets used on two surfaces of the rock sample, and according to the oil-water flow direction in the rock sample, the side surface of the rock sample is set as an inflow end, an outflow end, a first end and a second end respectively, one or two needle heads are arranged close to the inflow end, one needle head is arranged close to the outflow end, and the core micro-percolation model is packaged through glue.The single-needle head and double-needle head micro-percolation models are prepared for different types of shale oil reservoir cores, and oil-water two-phase percolation experiments are carried out on typical rock samples; through the experiments, more accurate understanding of the percolation channels of oil and water in the shale reservoir core is obtained, the distribution states of residual oil and bound water in the core are accurately characterized in a visualized mode, and important references can be provided for the research on percolation curves, the understanding of percolation rules and the compilation of development schemes.