29 results about "Black oil" patented technology

The invention discloses an oil-water two-phase seepage model construction method and system based on a critical path and a medium. Relates to the technical field of oil-gas field development. According to the scheme, a traditional black oil model simulation technology and a critical radius technology based on a critical path seepage theory are combined, and on the basis of ensuring the scale of an oil reservoir model, the oil-water two-phase seepage characteristic oil reservoir simulation method considering the micro-scale critical path is provided; microscopic characteristics such as a pore throat structure in a real reservoir rock are restored to the greatest extent by using the critical radius, and phenomena such as a dominant channel (critical path) of seepage of oil-water two-phase fluid in a pore throat and factors influencing displacement efficiency are researched from a microscopic perspective, so that a higher-precision oil reservoir simulation analysis result is obtained; according to the scheme, the flow and pressure of each component of oil and water are calculated directly based on the critical radius and the critical path length, a static oil-water relative permeability curve does not need to be input in the simulation process, and the stress state and the change process of each part of the oil reservoir can be reflected more directly.

The invention relates to the technical field of organic synthesis, in particular to a method for synthesizing 3-(alpha-methoxyl)-methylene benzofuran-2-(3H)-ketone, which comprises the following steps: S1, respectively dissolving benzofuranone and trimethyl orthoformate in a solvent, and heating the two obtained solutions in an oil bath; s2, pumping the two heated solutions into a microreactor through a metering pump for mixing and reacting, after the reaction is finished, feeding the obtained material into a gas-liquid separation device to remove tail gas, and absorbing the tail gas with water; and S3, post-treatment process: carrying out negative pressure concentration on the separated feed liquid to obtain black oily matter, then mixing the obtained black oily matter with a crystallizing agent, firstly heating for dissolving, then cooling for crystallizing, finally filtering to obtain a wet material, and drying the obtained wet material to obtain the product. According to the invention, benzofuranone and trimethyl orthoformate are respectively dissolved in acetic anhydride, the temperature is controlled by oil bath, and continuous contact is carried out through the microchannel reactor, so that the synthesis efficiency and safety of the product are improved.

The invention discloses a step-by-step optimization method for injection and production parameters of a gas-driven oil reservoir, comprising the following steps: the first step is to determine the daily liquid production rate of each oil well and the daily gas injection rate of the gas injection well based on an intelligent optimization algorithm and black oil numerical simulation, with the maximum recovery rate as the objective function; the second step is to establish an optimization mathematical model with the maximum economic net present value (NPV) as the objective function based on the liquid volume of each well determined in step one as the initial value, and to re-optimize the liquid volume of each well in the oil reservoir based on the intelligent optimization algorithm and the optimal injection and production parameters obtained in the first step by using component numerical simulation, so as to obtain the maximum NPV optimal gas injection rate and the daily liquid production rate of each production well. The invention can make full use of a small amount of conventional experimental test data, greatly shorten the time consumed by numerical simulation, realize simple, fast and accurate determination of gas-driven injection and production parameters, significantly improve the optimization time of gas-driven injection and production parameters, and reduce related economic costs.

The invention discloses a rapid detection and on-site treatment method for ammonia and black oil in fly ash, which comprises the following steps: 1) weighing 200g of fly ash from the batch of fly ash, putting the fly ash into a conical flask, adding 80g-90g of water for stirring, and stirring; (2) after stirring is completed, covering a conical bottle opening with test paper soaked with a 1% phenolphthalein alcohol solution; 3) if the test paper turns red, determining that ammonia with relatively high content exists; 4) standing for 8-10 minutes, and observing whether black oil exists on the surface of the neat paste; 5) after the detection is completed, treating excessive ammonia and black oil in the fly ash; according to the present invention, the ammonia content is rapidly detected by using the test paper impregnated with the 1% phenolphthalein alcohol solution, the black oil is observed by standing, and the concrete stirring and vibrating process is combined so as to achieve the real-time determination and the emergency treatment of the fly ash pollutants, such that the concrete structure quality is improved, and the fly ash field detection method is supplemented.

The invention relates to the technical field of degumming agents, in particular to a water-based neutral degumming agent and a preparation method thereof.The water-based neutral degumming agent is prepared from, by weight, 13%-17% of methyl salicylate, 27%-33% of glycol ether, 3%-7% of polyvinylpyrrolidone, 3%-5% of a softening agent, 1.1%-1.4% of a pH regulator, 1%-5% of liquid paraffin and the balance water; the device has the advantages that the OCA optical cement can be effectively removed, and the black oil is not damaged.

This utility model discloses a novel electric gear pump device for electric shovel lubrication truck, relating to the technical field of oil filling trucks for mining equipment. It includes a power compartment, a grease compartment, and a hose reel compartment. The power compartment includes a diesel generator set, a grease lubricating oil tank, a black oil lubricating oil tank, an electric gear pump set, an ultrasonic level gauge, a hose reel, a color paperless recorder, an electrical control cabinet, and a fire extinguisher. A ground-based oil replenishment system is installed on the side of the grease compartment. Ultrasonic level gauges are installed on the three oil tanks within the grease compartment to monitor the oil level in real time. These level signals are transmitted to the color paperless recorder installed on the electrical control cabinet panel. When absorbing oil, if the oil level in the tank is lower than the minimum absorbing level, the paperless recorder will issue a low-level alarm, reminding the operator to stop refueling to prevent the oil pump from running dry and being damaged. When replenishing oil in the tank, the paperless recorder will issue a high-level alarm, prompting the operator to stop oil supply to avoid oil overflow.

The present application relates to the field of oil reservoir numerical simulation, and discloses a GPU end assembly method, system, medium and equipment for oil reservoir equation Jacobian matrix based on directed connection traversal, which comprises the following steps: reading the current time step and Newton iteration state variable of the oil reservoir model; distributing or reusing the matrix data source and the right end item data source on the GPU end; calculating the cumulative item diagonal block contribution and the right end item contribution; calculating the connection potential difference and the upwind direction; traversing the connection flux contribution according to the directed connection record; forming the flux right end item, the pressure column Jacobian contribution and the state column Jacobian contribution on the GPU end; adding the wellbore, perforation or boundary upwind contribution to the matrix data source and the right end item data source on the GPU end; and marking the completed data source as ready for the linear equation package, solving and convergence reduction module to read. The present application adopts GPU fine-grained parallelism, efficiently supports large-scale black oil / component model simulation, and realizes the GPU parallel assembly of the linear equation matrix and the right end item in the oil reservoir numerical simulation.

The application discloses a critical path-based oil-water two-phase seepage model construction method and system and a medium, relates to the oil and gas field development technical field, and combines traditional black oil model simulation technology and critical radius technology based on critical path seepage theory, proposes an oil-water two-phase seepage characteristic oil reservoir simulation method considering microscale critical paths on the basis of ensuring the scale of the oil reservoir model, restores micro characteristics such as internal pore throat structures of real reservoir rocks to the maximum extent by using the critical radius, and studies factors such as the influence of the dominant channel (critical path) of oil-water two-phase fluid seepage in the pore throat and displacement efficiency on the phenomenon from the micro perspective, so that higher-precision oil reservoir simulation analysis results are obtained; the scheme directly calculates the flow and pressure of each component of oil and water based on the critical radius and the critical path length, does not need to input a static oil-water relative permeability curve in the simulation process, and can more directly reflect the stress state and change process of each part of the oil reservoir.

The utility model discloses a multi-stage anti-fouling and anti-impurity protection structure for a hydraulic breaking hammer, and relates to the technical field of hydraulic breaking hammers. The hydraulic cylinder comprises a middle cylinder, a piston is inserted in the middle cylinder, a front cylinder is sleeved on the surface of the piston, and a front cylinder neck bush is arranged in the front cylinder. According to the structure, dust and metal chippings which are attached to the outer wall of the piston and then enter the middle cylinder of the breaking hammer can be reduced, the phenomenon of black oil caused by hydraulic oil pollution due to the fact that the dust and the metal chippings enter the middle cylinder and are mixed with hydraulic oil is avoided, and adverse effects of polluted hydraulic oil on an excavator hydraulic system are avoided; low-pressure hydraulic oil enters the second-stage dustproof mechanism, hydraulic oil flowing spirals are formed on the surface of the piston, impurities between the piston and the middle cylinder can be cleaned, the impurities are timely discharged into an oil return channel through a spiral oil channel, enter a main machine and are finally filtered through a filter, and piston strain caused by the fact that chippings are clamped in gaps is avoided.

The utility model belongs to the technical field of breaking hammers, and particularly relates to a dustproof structure of a breaking hammer. The breaking hammer solves the problems that an existing breaking hammer is prone to black oil, and the service life of hydraulic oil is short. According to the dustproof structure of the breaking hammer, the breaking hammer comprises a front cylinder body and a drill rod, the front cylinder body is provided with a channel allowing the drill rod to penetrate through and stretch into the channel, and the dustproof structure of the breaking hammer is characterized by comprising a dustproof boss which is located on the peripheral wall of the drill rod and arranged in a protruding mode in the radial direction; the projection of the channel in the axis direction of the drill rod is located on the inner side of the outer edge of the dustproof boss, and the dustproof boss is provided with a guide structure capable of guiding and dispersing dust towards the outer side. Dust is prevented from impacting the outer sleeve, the black oil phenomenon is reduced, and the service life of hydraulic oil is prolonged.

The invention relates to a high-temperature-resistant soil-phase-free black-free oil-based drilling fluid suitable for extended reach wells and a preparation method thereof, belongs to the technical field of drilling fluids, and solves the problems of poor shear dilutability, high ECD value, high solid phase content, poor suspension performance and environmental friendliness of the oil-based drilling fluid in the prior art. The drilling fluid comprises diesel oil, an emulsifier, a calcium chloride aqueous solution, slaked lime, a filtrate reducer, a flow pattern regulator, a tackifying and shear strength improving agent, a wetting agent, a blocking agent and a weighting agent. The main emulsifier in the emulsifier is prepared by the following steps: reacting incomplete amide generated by reaction of tetraethylenepentamine and palmitic acid with maleic anhydride to generate a component A, reacting linoleic acid with methyl nadic anhydride to generate a component B, and mixing the component A and the component B to obtain the main emulsifier; the auxiliary emulsifier is oil-soluble soap generated by reacting stearic acid with organic amine. The drilling fluid has the advantages of good shear dilutability, low ECD value, extremely low solid phase content and good suspension performance.

The utility model discloses a mixing device of a carbon black oil production system, which comprises a second mixing chamber, four ends of the upper part of the second mixing chamber are fixedly connected with a fixing frame, the upper end of the fixing frame is fixedly connected with a first mixing chamber, the upper end of the first mixing chamber is provided with a feed port in a penetrating manner, and the upper end of the first mixing chamber is provided with a discharge port. One end of the outer side of the first mixing chamber is fixedly connected with a first driving motor, the output end of the first driving motor penetrates through the first mixing chamber and is inwards provided with a first rotating rod, and the first rotating rod is fixedly connected with a second spiral blade; by arranging the first mixing chamber, the first driving motor, the first rotating rod and the second spiral blade, asphalt and anthracene oil can be pre-stirred, meanwhile, by arranging the second mixing chamber, secondary stirring operation of the asphalt and the anthracene oil can be achieved, the mixing effect between the asphalt and the anthracene oil is improved, automatic mixing operation is achieved, and the mixing effect is improved; asphalt and anthracene oil in the carbon black oil are mixed more uniformly, and the production quality of the carbon black oil is improved.

The embodiment of the invention relates to the field of petroleum and natural gas development, and discloses a method, system and equipment for determining geological reserves and a storage medium, and the method comprises the steps: generating a multi-component hydrocarbon system PT phase diagram through PVT phase state simulation calculation; according to the temperature and pressure of the stratum, the gas reservoir type is judged by combining a PT phase diagram; according to the PT phase diagram, obtaining corrected black oil PVT attribute data through phase state simulation; the original oil saturation is determined according to the original water saturation, the original formation pressure and the retrograde condensate volume percentage; establishing corresponding material balance relations under the three isothermal pressure drop paths; selecting a corresponding material balance relation according to the type of the gas reservoir, and solving the selected material balance relation by utilizing the corrected black oil PVT attribute data and the original oil saturation to obtain a solving result; and calculating the gas-bearing dynamic geological reserves and the accumulated water invasion amount according to the solving result. According to the embodiment of the invention, the problem that the calculation error is large when the gas condensate content is high is solved.

The invention discloses a Jian tea bowl with silver hair and silver drops and a firing method thereof. The Jian tea bowl comprises a body and a glaze; the body is made of the following components by weight: 8 parts of red mud and 2 parts of kaolin. The glaze comprises an inner glaze and an outer glaze; the inner glaze is applied to the inside of the body, and the outer glaze is applied to the outside of the body; the inner glaze is made of the following components by weight: 7 parts of glaze ore, 1 part of inner glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water; the outer glaze is made of the following components by weight: 7 parts of glaze ore, 1 part of outer glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water. The Jian tea bowl prepared by the invention has oil droplets on a black bottom inside the bowl, and hair silk on a black bottom outside the bowl, the bottom color is black oil, and the oil droplets and hair silk are silvery and bright. The oil droplets are sparse and dense, the hair silk is uniform, the inner droplets and the outer hair silk, and the oil droplets and hair silk are presented on the same Jian tea bowl, which is very novel.

The invention relates to the field of dispersing agents, and discloses an application of a dispersing agent in eliminating black oil bubbles in a machining fluid bath, the dispersing agent is a fatty alcohol-polyoxypropylene-polyoxyethylene block copolymer with an HLB value of 8.0-10.5; the black oil bubbles are formed by the combined action of guide rail oil, cutting fluid and metal chips in a machining fluid tank containing hard water; the cutting fluid contains a surfactant. The nonionic dispersing agent is added to the edge of a liquid tank or a cutting fluid formula, so that oil-water interfacial tension is rapidly reduced, a charge barrier is broken through, aluminum scraps are disintegrated, liquid film rigidity is enhanced, an oil film structure embedded in the aluminum scraps is instantly broken, bubbles are collapsed, micro aluminum scraps and miscellaneous oil are synergistically flocculated and sunk in the same process, and the oil-water separation effect is improved. Therefore, black oil bubbles are thoroughly eliminated and the regeneration is inhibited.

The utility model relates to equipment for deeply replacing engine oil of an engine. The equipment comprises a shell and a steel cylinder arranged in the shell, an engine oil filling port with a sealing cover is formed in the top of the steel cylinder and is exposed out of the top of the shell; an external gas source device is connected with the gas inlet through a gas source switch, a pressure regulating valve and a three-way valve in sequence; the other path of the three-way valve is connected with an old oil purging pipeline; an engine oil outlet is formed in the bottom of the steel cylinder and is connected with a new oil filling pipeline; quick connectors are arranged at the end parts of the old oil purging pipeline and the new oil filling pipeline and can be matched and connected with an interface of an oil filter seat on an engine through matched connectors; and the steel cylinder is provided with an engine oil liquid level observation mechanism. Old engine oil, black oil sludge, colloid and oxidized aggregate remaining in an oil duct of a lubricating system can be completely blown out and emptied, the engine lubricating system is scoured and deeply lubricated through filling of new engine oil, accurate oil filling can be completed at a time, labor and time are saved, and operation is rapid and convenient.

The embodiment of the utility model belongs to the technical field of camera modules. The utility model further relates to a camera module for optimizing the two-dimensional code printing grade, the camera module comprises an FPC main body and an FPC reinforcing plate arranged on the FPC main body, the FPC reinforcing plate is provided with a two-dimensional code printing area, the two-dimensional code printing area adopts double-layer printing ink, the bottom layer of the double-layer printing ink is a white oil layer, the surface layer of the double-layer printing ink is a black oil layer, and the black oil layer is used for laser etching of the two-dimensional code. An original single-layer white oil structure is changed into a double-layer ink structure design that the bottom layer is the white oil and the surface layer is the black oil, through the design, in the laser etching process, the two-dimensional code is displayed in the black oil area in the color of the white oil, an obvious black-white contrast ratio is formed, and the two-dimensional code is displayed in the black oil area. According to the design, the requirements for laser parameters and laser etching position flatness are reduced, the laser etching trace of the two-dimensional code is improved, and the grade of the two-dimensional code is remarkably improved, so that the code scanning time is shortened, and the recognition success rate is improved.

The dustproof drill rod of the hydraulic breaking hammer comprises a drill rod body, a dustproof cover and an outer sleeve, a front protruding block and a rear protruding block are arranged in the middle of the drill rod body, a middle groove is formed between the front protruding block and the rear protruding block, a through hole, a clamping groove and an inner expanding groove are sequentially formed in the dustproof cover from left to right, the drill rod body penetrates through the through hole of the dustproof cover, and the outer sleeve is sleeved with the clamping groove. The through hole is matched with the middle groove, the rear protruding block is matched with the clamping groove, the outer sleeve is inserted into the drill rod, the front end of the outer sleeve is arranged in the inner expanding groove, and a certain distance is formed between the front end of the outer sleeve and the rear protruding block. The dust-proof device can completely cover the outer sleeve, is very remarkable in dust-proof effect, can prevent dust from directly impacting the outer sleeve, reduces dust entering the front cylinder body, reduces the probability of black oil, avoids cylinder scoring, and prolongs the service life of hydraulic oil and the hydraulic breaking hammer; consumption of the outer sleeve caused by friction between the outer sleeve and the rear protruding block and the dustproof cover can be avoided, and therefore the service life of the outer sleeve is prolonged.

The invention relates to an in-layer invalid cycle identification method and device based on an oil reservoir displacement unit, and the method comprises the steps: determining the influence degree of each geological factor and each development factor on the occurrence time of an invalid cycle in the oil reservoir displacement unit through a multi-factor and multi-level orthogonal test; according to the influence degree of each geological factor and each development factor on the invalid cycle occurrence opportunity in the oil reservoir displacement unit, establishing an invalid cycle occurrence opportunity prediction model; based on the invalid cycle occurrence opportunity prediction model, a recovery degree prediction value of the actual displacement unit is determined, and a recovery degree actual value of the actual displacement unit is determined through the black oil model; and determining an invalid cycle identification result according to the predicted value of the recovery degree and the actual value of the recovery degree. According to the method, the invalid cycle in the oil reservoir can be quantitatively represented and identified, and the formation opportunity of the invalid cycle in the actual displacement unit can be predicted.

The invention discloses an oil slurry solid content rapid determination method, which comprises: (1) weighing a container, and recording the weight as G0; (2) oil slurry is heated and stirred, and sampling representativeness is guaranteed; (3) weighing the oil slurry in the step (2), putting the oil slurry into the container treated in the step (1), and recording the weight as G1; (4) heating the oil slurry in the container to evaporate oil gas in the oil slurry until cold oil gas is in the beaker, and continuously heating until residual substances at the bottom of the container are completely ashed; (5) burning black oil gas at the upper part of the container heated in the step (4) in a muffle furnace, cooling the container, cooling in a dryer, weighing, and recording the weight as G2; and (6) calculating the solid content X in the oil slurry by adopting a formula, wherein rho is the density of the oil slurry. The data of the solid content of the oil slurry measured by the measuring method is accurate, and the measuring time is short.

The invention relates to the technical field of keyboard modules, in particular to a shading film structure and white oil printing process and equipment thereof.The shading film structure comprises a PET film serving as a printing carrier, a window area and a non-window area are arranged on the surface of the PET film, a first white oil layer is formed on the window area through printing treatment, and a second white oil layer is formed on the non-window area through printing treatment; screen dots are arranged at the position, located on the outer side area of the first white oil layer, of the window area, a black oil layer is formed on the non-window area through printing treatment, and a second white oil layer is formed at the position, corresponding to the first white oil layer and the black oil layer, of the back face of the PET film through printing treatment. According to the shading film structure, the white oil printing process and the white oil printing equipment, the problems that light rays ineffectively overflow in the non-window area transmission process of the PET film and the brightness is reduced due to the influence of light absorption of the surrounding dark environment can be avoided, the light rays are guided to the window area to the utmost extent, the brightness of the window area is improved, the light emitting brightness of a keyboard is further improved, and the service life of the keyboard is prolonged. And the key backlight is enabled to be clearer and brighter.

The invention provides an extra-high water cut stage sandstone reservoir water drive development numerical simulation method based on a saturation-physical relationship. Saturation is introduced as a grid scale parameter, physical property change of a single grid is accurately described, simulation precision is improved, and calculation cost is reduced. The method comprises the following steps: S1, establishing an oil reservoir basic geologic model, and determining a relationship between saturation and reservoir physical properties; s2, coupling the saturation-physical relationship to a traditional black oil numerical model; s3, dynamically adjusting physical property parameters, and simulating a water flooding process; and S4, performing iterative calculation to obtain pressure, saturation and oil-water distribution. The method provides technical support for efficient oil reservoir development, and particularly has important application value in the aspects of remaining oil potential tapping and recovery efficiency improvement.

The utility model provides a kind of magnetic yoke special workbench for flaw detection, belong to magnetic yoke flaw detection technical field. Including workbench main part, the detection area for placing workpiece is equipped on workbench main part, mounting bracket is equipped on workbench main part, illuminating lamp is equipped on the detection area top on mounting bracket, shielding cover is equipped on the detection area outside on mounting bracket, and the side of mounting bracket is left with operating mouth, workbench main part is equipped with still for recycling black oil magnetic suspension recovery mechanism. It has the effect of improving contrast enhancer and the convenience of black oil magnetic suspension cleaning.

Systems and methods of determining an equivalent black oil model are disclosed. In one embodiment, a method of determining an equivalent black oil model of a reservoir includes generating three-dimensional PVT properties using a compositional model, calculating original fluid in place and reservoir performance characteristics from the three-dimensional PVT properties, and converting the three-dimensional PVT properties to a two-dimensional PVT table. The method further includes, until an equivalency metric is satisfied, generating one or more grouped PVT property tables, initializing a black oil model with the one or more grouped PVT property tables, calculating estimated fluid in place and estimated reservoir performance characteristics using the black oil model, and comparing the estimated fluid in place and the estimated reservoir performance characteristics with the original fluid in place and the reservoir performance characteristics to determine whether the equivalency metric is satisfied.

The utility model relates to the technical field of wireless communication, and discloses an FPC antenna. The FPC antenna comprises a radiation unit layer; an AD adhesive layer; a black oil layer; a PI base layer; a double-sided adhesive layer; a release paper layer; the radiation unit is arranged on the radiation unit layer and comprises a first radiation part and a second radiation part; the feeding points are arranged at the upper part of the black oil layer, and the feeding points comprise a first feeding point and are arranged at the lower part of the first radiation part; the second feeding point is arranged at the upper part of the second radiation part; the third feeding point is arranged below the second radiation part; the positioning part is arranged at the upper part of the black oil layer and is a circular through hole. By arranging the first feeding point, the second feeding point and the third feeding point, loss of signals in the transmission process is ensured to be as small as possible, so that antenna impedance is consistent, signal reflection and loss are reduced, stability and anti-interference capability of a communication system are improved, and receiving and transmitting performance of the antenna is further enhanced. The utility model also discloses a wireless gateway.

The utility model discloses a black oil distribution valve cleaning device, and belongs to the technical field of black oil distribution valves. The black oil distribution valve solves the technical problems that a black oil distribution valve is easy to clean incompletely and easy to damage, and comprises an oil tank with an opening in the top, a settling tank and a cleaning tank are sequentially arranged in the oil tank from bottom to top, a filter hole communicated with the settling tank is formed in the cleaning tank, and an overflow hole communicated with the oil tank is formed in the upper portion of the settling tank. The oil tank is connected with a conveying mechanism through a conveying pipe, the conveying mechanism is detachably connected with one end of a black oil distribution valve through an output oil pipe, and the other end of the black oil distribution valve is detachably connected with a hydraulic plug. Oil liquid can be input into the black oil distribution valve to clean the black oil distribution valve, the cleaned oil liquid is discharged into the cleaning box, filtered by the filter holes and then flows into the settling box to be settled, and settled supernatant flows into the oil tank from the overflow hole, so that the purpose of circulating flushing is achieved, the cleaning efficiency is improved, and the black oil distribution valve is prevented from being damaged.

The application relates to the technical field of metal plate shearing processing, and particularly discloses a hot-dip galvanizing high-strength steel longitudinal cutting and slitting black oil mark eliminating device, which comprises a tension table mechanism and a felt pad. The tension table mechanism comprises an upper pressing table and a lower pressing table which are vertically and separately installed on a tension table support frame. A hydraulic drive mechanism is vertically installed at the top end of the tension table support frame, and the upper pressing table slides along the tension table support frame in the vertical direction. The felt pad comprises upper felt and lower felt which are respectively installed on the adjacent surfaces of the upper pressing table and the lower pressing table. Two groups of PVC thin plates are arranged on the side of the upper felt and the lower felt close to the finished product narrow steel roll. A hot-dip galvanizing steel roll mother roll is cut by the longitudinal cutting and slitting machine to form the finished product narrow steel roll, and the finished product narrow steel roll is wound by the winding machine. The black oil mark defect in the longitudinal cutting and slitting process is eliminated from the source, the winding tension is stable, and the device can be directly matched with most existing longitudinal cutting and slitting production lines.

The invention discloses a pore scale numerical simulation method, system and equipment based on rock deformation and a storage medium, and belongs to the technical field of oil reservoir numerical simulation methods. According to the method, on the basis of a porous medium skeleton network reconstruction model, a phase permeability curve and a capillary force curve of a porous medium reservoir under different deformation degrees are calculated through a weak fluid-solid coupling method and in combination with a steady-state method; fitting the characterization model of the relative permeability curve and the capillary force curve of the porous medium considering the pore deformation factor with numerical simulation software based on a black oil model to obtain a pore scale numerical model based on rock medium deformation; and predicting the influence of rock pore scale deformation on fluid seepage by adopting the pore scale numerical model. The simulation method provided by the invention solves the technical problem that the influence of pore-scale rock structure deformation on the fluid seepage law in the reservoir is difficult to accurately describe in the prior art, and provides theoretical guidance for efficient development of oil and gas.

The invention belongs to the technical field of oil and gas field development, and discloses a method, medium and equipment for improving numerical simulation efficiency of a large heavy oil reservoir. According to the method, a target oil reservoir root is divided into a first stage and a second stage according to different development modes of an oil field, the first stage is a cold production stage, and the second stage is a regional cold and hot mixed production stage of mixed development of a cold production region and a hot production region; and cold production simulation is conducted on the first stage, and cold production simulation and thermal production simulation are conducted on the second stage in different areas. According to different development modes of an oil field, the target oil reservoir is divided into the development stages and the development areas, the black oil model / thermal recovery model is constructed in stages and areas, the heavy oil number simulation combination time can be remarkably shortened, the heavy oil number simulation combination efficiency can be improved, the fitting precision can be improved, and therefore the purpose of saving cost is achieved.