27results about How to "Improve the transformation effect" patented technology

The invention discloses a safe and efficient deep peak regulation coal-fired power generation system based on fused salt heat storage and an operation method thereof, and the system comprises a traditional coal-fired power generation unit and a fused salt heat storage system coupled with the traditional coal-fired power generation unit. According to the fused salt heat storage system, heat storage is carried out in the mode that fused salt is sequentially heated through exhaust steam of a pressure cylinder in a split-flow turbine and reheated steam, heat release is carried out through a boiler water supply bypass scheme, and the steam split-flow rate in the heat storage process is increased through an SSS clutch. In the heat storage process of the system, under the condition that the lowest stable combustion load of a boiler is guaranteed, part of steam turbine medium-pressure cylinder exhaust steam and reheated steam of the coal-fired power generation unit are distributed to the fused salt heat storage system, and fused salt in a low-temperature fused salt tank is sequentially heated through the two streams of steam; through cooperation of the SSS clutch, exhaust steam of the intermediate pressure cylinder of the steam turbine is completely shunted for heat storage; in the heat release process of the system, under the condition that the coal feeding amount of the boiler is not increased, the molten salt heat storage system is used for heating part of condensed water of the coal-fired power generation unit, and the variable load rate of the coal-fired power generation unit is increased.

The present application relates to a novel long-acting solid coated slow-release acid and a preparation method. The solid coated slow-release acid has a core-shell structure, the shell layer comprises a polymer, and the core comprises an acid former; the acid former is at least one selected from chlorinated aromatic hydrocarbons, chlorinated acid esters and acid chlorides, and the polymer is at least one selected from polyesters, poly(meth)acrylates, epoxy resins, polyolefins, polyacrylonitriles, polyimides, polyvinyl alcohols. The solid coated slow-release acid has the advantages of small environmental pollution, long acid release time, excellent deep penetration performance, high acid generating efficiency, easy storage and transportation, good slow-release performance and simple preparation.

The present invention discloses a reservoir transformation fluid for tight oil reservoirs and a pressure-driven integrated production increase method, belonging to the technical field of oil and gas reservoir production increase. The method is for the purpose of pressure-driven integration, and the function of the fracturing fluid thickener is designed to prepare a pressure-driven integrated emulsion thickener with a special structure and special function; the product has entered the batch production stage, the raw materials are non-toxic and pollution-free, the price is moderate, the product performance is stable, and it has broad application prospects; in addition to integrating the functions of high-efficiency viscosity increase, low-viscosity drag reduction, high-viscosity elastic sand carrying, and low damage, the fracturing fluid also has an oil displacement function after gel breaking, which can well meet the construction requirements of tight oil reservoir pressure-driven integration; based on the research on tight oil reservoir reservoir transformation fluid, a tight oil reservoir pressure-driven integrated production increase method is proposed in a targeted manner, which simplifies the fracturing and oil displacement processes, shortens the operation time, saves construction costs, effectively improves the tight oil reservoir transformation effect, and increases the crude oil recovery rate.

The invention belongs to the technical field of soil improvement, and particularly relates to a saline-alkali soil conditioner and an improvement method. The modifier is composed of SMT1-SMT5, wherein SMT1 is formed by compounding ammonium bicarbonate, ammonium carbonate and ammonia water according to the mass ratio of (4.5-5.5): (1.5-2.5): (0.8-1.2); sMT2 is prepared by compounding humic acid, fulvic acid, amino acid, chitin, water and an auxiliary material in a mass ratio of 2: 1: 1: 1: (5-6): (40-60); sMT3 is compounded by fungi, actinomycetes and water according to the mass ratio of 3: 1: (4-6); sMT4 is prepared by compounding cyanobacteria, cellulase, uricase, biochar and water according to the mass ratio of 3: 1: 1: 1: (3-5); sMT5 is compounded by gossypol, vegetable tannin and water according to the mass ratio of 3: 2: (4-6). According to the invention, SMT1-SMT5 synergistically improve the action effect of the modifier, and the modifier has a significant reduction effect on the pH, sodium ions and total salt content of saline-alkali soil.

The utility model relates to the technical field of transformation construction of roof trusses of rail transit elevated stations, in particular to a comprehensive support hanger fixed by adopting a grid structure ball joint, which comprises a fixing component connected between the ball joint and the comprehensive support hanger, and the fixing component comprises an upper clamping plate, a lower clamping plate and a penetrating screw rod. Wherein the upper clamping plate is installed above the spherical joint, the lower clamping plate is installed below the spherical joint, the upper clamping plate and the lower clamping plate are connected through the opposite-penetrating screw rod, the lower portion of the lower clamping plate is connected with the flange plate through the change-over lever, and the flange plate is fixedly connected with the comprehensive support hanger. The utility model has the advantages that the structure is simple and reasonable, the stress is stable, the pipeline is ensured to be neat, and the transformation effect is good; the application range is wide, and except the comprehensive support hanger, guiding and passenger service systems can be fixed.

The present invention belongs to the field of traction power supply for electrified railways, and specifically relates to a high-speed railway multi-line shared traction substation system, which aims to solve the problems of high transformation cost and difficulty in achieving precise control of existing substation systems. The traction substation system of the present invention shares an external power supply input line, and the output line supplies power to multiple railway feeders. The main connection adopts a line transformer group connection method to realize the replacement and addition of existing equipment, and achieve the function of multiple feeders sharing a traction substation. The monitoring and protection device is connected to the integrated automation system to detect the status of the power supply system in real time. The method also includes a data processing and transmission module for alarm prompts, and establishes a transformation database to verify the transformation effect to ensure the stability and safety of the traction power supply system. The method of the present invention transforms the traction substation system, has low resource consumption, can achieve precise control, and provides data support for further improving the transformation effect in the future.

The present application provides an image processing method, apparatus, terminal device and readable storage medium. The method comprises: obtaining an image to be processed and a reference image for the image to be processed, wherein the similarity between a first target object in the image to be processed and a second target object in the reference image is greater than a first preset value; adjusting the image of a corresponding area in the image to be processed according to the image of a preset area in the reference image until the similarity between the image to be processed and the reference image is greater than a second preset value; and using the adjusted image to be processed as a target image. Through the image processing method of the present application, a completely aligned image pair (target image and reference image) can be obtained, which can be used to train an image style transformation model with better transformation effect, thereby better meeting various image style transformation requirements and optimizing user experience.

The invention discloses a method for fracturing a shale front temporary plugging body in a fracture zone, and relates to the field of shale gas fracturing. The method for fracturing the fracture zone shale front temporary plugging body comprises the following steps that a shale fracture development degree judgment model is established, and the natural fracture development degree of a target layer is judged according to the shale fracture development degree judgment model; different displacement wellhead pressure values are calculated according to logging data interpretation and small-pressure test data, and a fracture zone shale body transformation construction pressure judgment standard is established; in the early stage of the fracturing implementation process, a front temporary plugging process is adopted for construction; and displacement, liquid viscosity and in-seam temporary plugging process parameters are adjusted to achieve reservoir transformation. According to the method for fracturing the fracture zone shale front temporary plugging body, provided by the invention, field engineers can be helped to judge the development degree of stratum fractures and evaluate whether fracturing transformation is effective or not, and a systematized front temporary plugging process and a field construction regulation and control means are provided on the basis, so that the transformation effect of the fracture zone shale is effectively improved.

The present application relates to the field of gate locking beams and technology, and in particular to a locking beam labor-saving throw-in and throw-out device and a gate locking system, including a door frame spanning across the two sides of the locking beam, a handle rotatably arranged above the door frame, a threaded rod inserted in the handle, and two pulley blocks for clamping on both sides of the web of the locking beam and resting under the upper wing plate of the locking beam, the threaded rod is connected to the pulley block, the handle and the threaded rod are threadedly matched, and the threaded rod and the pulley block are driven to move up and down by the rotation of the handle. With such an arrangement, the locking beam is lifted off the ground to the slide rail by the labor-saving principle of spiral lifting and pulley rolling, so as to achieve easy throw-in and throw-out; the structure has low cost, high reliability, low later maintenance cost, simple structure, convenient operation, labor saving and money saving.

The invention belongs to the technical field of fracturing fluids, and particularly relates to a seawater-based nano synergistic pressure flooding fluid system as well as a preparation method and application thereof. The seawater-based nano synergistic pressure flooding liquid system comprises modified nano SiO2 particles, a drag reducer, a bactericide, an anti-swelling agent, a scale inhibitor and water. According to the seawater-based nano synergistic pressure driving liquid system, seawater resources are reasonably utilized during offshore pressure driving, the demand of an offshore platform for fresh water resources is relieved, and the construction cost of the pressure driving liquid is greatly reduced.

The application provides a differentiated hole arrangement design method for increasing the number of fracture cracks in a heterogeneous reservoir, and belongs to the technical field of oil and gas exploitation. Reservoir quality parameters, rock mechanics parameters and ground stress parameters of a target well and fracture crack distribution of a neighboring well of the target well are obtained to design the number of fracture cracks / cluster number, position and shape of each cluster of cracks. A mathematical model of the fracture cracks is selected according to the ground stress parameters and the shape of each cluster of cracks to calculate the net pressure required by the shape of each cluster of cracks. A random algorithm is used to determine the displacement of each cluster of cracks and the number of perforation holes, and the friction of each cluster of crack holes is calculated. The bottom hole pressure of each cluster of cracks is calculated according to the net pressure of each cluster of cracks and the friction of each cluster of crack holes, and if the bottom hole pressure of each cluster of cracks is equal, the next step is performed. The ground pumping pressure is calculated by using a fluid mechanics method, and if the ground pumping pressure meets the set conditions, the design is completed. The method can reduce the downhole complex risks such as channeling, improve the fracturing construction efficiency and reservoir reconstruction effect, and reduce the construction cost.

The invention discloses a method for transforming edge computing nodes of networked equipment, relates to the technical field of edge computing, and solves the problems that it is not guaranteed that a processing effect of uniform computing power quantification among a plurality of edge nodes can be achieved, and different load characteristics of different computing nodes in different time periods are not analyzed. According to the method, the computing power in different time periods is re-confirmed and allocated based on the group adaptation node set, and the total computing power can be reasonably allocated according to the load difference of each node in different time lines according to the numerical representation in the historical period, so that each associated node can obtain adaptive computing power resources; therefore, the calculation precision and the processing efficiency are improved, the transformation effect of the edge calculation node is greatly improved, and the edge calculation node can better meet the data processing requirements of complex and changeable networking equipment.

The invention discloses a compact rock fracturing device and method based on CO2 phase state change. The compact rock fracturing device comprises a compact rock sample with a central through hole, and further comprises an injection module configured to inject fluid into the compact rock sample; the upper sealing assembly and the lower sealing pipe fitting are both arranged in the center through hole, the upper sealing assembly and the lower sealing pipe fitting are oppositely arranged, an open hole section is defined by the upper sealing assembly, the lower sealing pipe fitting and the center through hole, and fluid is injected into the open hole section; the temperature control module comprises a cold control unit and a thermal control unit, and the cold control unit and the thermal control unit are communicated into the open hole section; and the fluid monitoring module is used for monitoring the pressure and temperature of the fluid in the naked eye section. The fluid temperature and pressure alternating effect can degrade the mechanical property of the compact rock sample; the fluid phase state change induces the generation of dominant fracturing fractures, and the two synergistically act to achieve the purpose of strengthening the reconstruction of the compact rock sample.

The invention provides a multi-cluster horizontal well volume fracturing temporary plugging process in a conglomerate oil reservoir section, and belongs to the technical field of petroleum and natural gas yield increase. According to the method, two times of temporary plugging are carried out in a front stage and a sand adding stage in intra-section multi-cluster temporary plugging fracturing; stepwise displacement reduction testing is carried out in the trial extrusion stage, displacement needs to be changed as quickly as possible, the displacement when the displacement is stable and hole friction resistance parameters are selected for calculation, and the number of opened holes is obtained; a temporary plugging agent is added according to the number of the opened eyelets; when the plugging agent is in place, whether temporary plugging is effective or not is judged through a pressure boosting method, and if temporary plugging is ineffective, the temporary plugging agent continues to be added; if the temporary plugging is effective, when the pressure fluctuates in a preset range, the pressure is considered to be stable, and then sand is added; and in the sand adding temporary plugging stage, the process which is the same as that in the front temporary plugging stage is adopted. According to the method, the plugging efficiency of multi-cluster temporary plugging fracturing in the section can be effectively improved, and the method has very important significance for solving the problems of difficult temporary plugging construction and poor temporary plugging effect of the conglomerate oil reservoir.

The invention belongs to the technical field of CO2 fracturing, and particularly relates to a CO2 fracturing crack propagation simulation experiment device and a simulation method thereof. The device comprises a CO2 fracturing medium pumping system, a triaxial stress loading system, an acquisition module and a data calculation control system. The CO2 fracturing medium pump injection system comprises a CO2 injection system, an N2 injection system and a water phase injection system and is used for simulating different CO2 fracturing process artificial fracture expansion forms; the acquisition module is used for acquiring actual wellbore parameters, reservoir parameters, CO2 physical property parameters and CO2 injection parameters; and the data calculation control system is used for calculating the instantaneous temperature and pressure of CO2 at a perforation shot hole in the early stage of fracturing according to the actual shaft parameters, the reservoir parameters and the CO2 physical property parameters, and calculating experimental CO2 injection parameters according to the CO2 injection parameters. The problems that an existing simulation device has few simulation working conditions and cannot accurately simulate actual working conditions are solved.

The invention discloses assembling equipment for transformer accessory manufacturing, and belongs to the technical field of transformer accessory assembling. The assembling equipment comprises a machining table, a silicon steel sheet limiting assembly is arranged on the machining table and used for positioning a silicon steel sheet, and an iron core coil assembling unit is further arranged on the machining table; the stacking and assembling device is used for stacking iron core components and assembling coils and iron cores. The grabbing arms are matched with the limiting and attaching pressing blocks, when the limiting and attaching pressing blocks penetrate through positioning holes of the silicon steel sheets, downwards-bent faces are formed, the center parts of the silicon steel sheets make contact with the surfaces of the silicon steel sheets at the bottom firstly, and the situation that when the silicon steel sheets are stacked, the surfaces of the silicon steel sheets on the lower layer are scratched due to falling of the edge parts is avoided; and the processing table carrying the assembling sliding seat and the assembling table is matched with the combined hydraulic cylinder, so that after all parts of the iron core are stacked, the iron core and the coil sleeve can be assembled in a unified manner, the integrity of the stacked iron core is improved, and the effect of improving the transformation performance of the assembled transformer is achieved.

The invention discloses a low-pressure tight gas reservoir carbon dioxide energy increasing and pressure supplementing method which comprises the following steps: establishing a gas pressurization basic model according to original formation pressure, the method comprises the following steps: dividing reservoirs into low-pressure I-type gas reservoirs, low-pressure II-type gas reservoirs, normal-pressure gas reservoirs, low-porosity gas reservoirs, ultra-low-porosity gas reservoirs, gas saturation A-type gas reservoirs and gas saturation B-type gas reservoirs according to a gas pressurization basis, and predicting CO2 injection amounts required for different types of reservoir stratum pressure coefficients to reach a set value; liquid CO2 / base fluid pre-mixed injection is carried out on a low-pressure I-type gas reservoir, a low-pressure II-type gas reservoir and a normal-pressure gas reservoir; cO2 / guanidine gum fracturing fluid sand-carrying mixed injection and normal-pressure gas reservoir guanidine gum fluid sand-carrying injection are carried out on a low-pressure I-type gas reservoir and a low-pressure II-type gas reservoir; and carrying out base fluid displacement on the low-pressure I-type gas reservoir, the low-pressure II-type gas reservoir and the normal-pressure gas reservoir. The method is easy to operate, energy increasing and a large amount of sand carrying are both considered, the liquid drainage period can be shortened, the flow-back capacity is improved, and the overall gas reservoir transformation effect is improved.

The application provides a construction parameter optimization method for improving shale reservoir reconstruction rate, and the method comprises the following steps: establishing a three-dimensional shale reservoir fracture propagation model according to shale reservoir formation parameters of a target block; determining the value range of important construction parameters; determining multiple sets of combined parameters according to the value range of the important construction parameters; applying the multiple sets of combined parameters to the three-dimensional shale reservoir fracture propagation model one by one, performing numerical simulation on fracture propagation by using a finite element method, obtaining multiple simulation results respectively corresponding to different sets of combined parameters, and the simulation results include fracture propagation length; calculating reservoir reconstruction rates respectively corresponding to different sets of combined parameters according to the fracture propagation length; taking each reservoir reconstruction rate as a target response value, analyzing the significance of the construction parameters, and then determining the best combined parameters. The optimization method can improve the reconstruction effect of the shale reservoir, and further improve the development effect of shale oil and gas.

This invention discloses a method for transforming and improving the quality of inefficient ecological forests in the Loess Plateau, belonging to the field of ecological forest management technology. The method first determines the type of inefficient ecological forest, classifying it into four categories: overly sparse, overly dense, aging, and restricted. Then, it matches corresponding transformation procedures based on the type: for overly sparse stands, replanting and land preparation for rainwater harvesting are carried out; for overly dense stands, gradient thinning is implemented, and soil moisture and tree growth are monitored; for aging stands, pruning, deep burial of litter, and combined rainwater harvesting and water conservation are employed; for restricted stands, rainwater infiltration holes are created, branches are pruned, and backfilling is used to increase fertility. This invention specifically addresses the problems of unbalanced forest density, tree aging, soil and water nutrient deficiency, and restricted stand growth in the Loess Plateau, improving stand stability and health, and enhancing soil water environment and nutrient status. The technology is easy to operate, has low transformation costs, and is suitable for large-scale transformation of various types of inefficient ecological forests in the Loess Plateau.

The application discloses a coal seam thickness and coal body structure spatial distribution combination type classification method, and belongs to the technical field of coal reservoir reconstruction. The method first collects well logging data of a coalbed methane well in a target area, and establishes a coal body structure well logging interpretation model based on coring samples, and then identifies the coal body structure of a well without coring. Subsequently, GSI quantitative classification criteria are established, sensitive well logging parameters are selected to establish a GSI prediction model, and the quantitative identification of the coal body structure type is realized by calculating the GSI value. Then, the coal seam thickness and the coal body structure spatial distribution combination type are classified in combination with the thickness, proportion and spatial combination mode of different coal body structures. The application can indicate the direction of efficient reservoir reconstruction of the coalbed methane well through accurate identification of the coal body structure and division of the combination type, and then ensure the reconstruction effect of the coalbed methane well.

The present invention discloses a device and method for drilling and reforming hot dry rock reservoirs. The device includes a drill bit, a micro-hole drill, a power short joint, an upper joint, a connecting joint string and a continuous oil pipe connected in sequence; it can also include a bottom hole measurement while drilling tool, a direction finder and a downhole thruster; the drill bit has a front nozzle; the drill bit has a plugging column in the center, and a spring is sleeved on the plugging column; the micro-hole drill has a plurality of lateral nozzles on the side wall; the micro-hole drill has a control sleeve on the inner wall, and a flow channel is provided in the center of the control sleeve. The present invention can perform jet reformation on thermal reservoirs with developed natural fractures in the main wellbore and thermal reservoirs with a low number of fractures or poor connectivity in the main wellbore, respectively, can increase the reformation volume, reduce the risk of microseismicity, and can also be implemented in conjunction with chemical stimulation to improve the reformation effect.

The invention is applicable to the technical field of oil and gas resource development, and provides an underground pressurizing device applicable to marine hydrate reservoir splitting grouting, which comprises an upper short section connected with a lower short section and a pressurizing short section; the screw motor transmission shaft is connected with the reciprocating motion assembly; one end of the central flow channel is connected with the upper liquid inlet hole, the other end of the central flow channel is connected with the liquid discharge hole, and the liquid discharge hole is communicated with the cavity of the lower short section; the pressurizing cavity is located in the pressurizing short section and communicated with the high-pressure channel, the high-pressure channel is connected with the drain valve, and a lower liquid inlet hole is formed in the pressurizing cavity and communicated with the cavity of the lower short section; and the piston is arranged in the pressurizing cavity and is connected with the reciprocating motion assembly. Marine hydrate stratum grouting splitting can be achieved only through the circulating pump, reservoir transformation grout is injected into the well through the drilling rod by means of the circulating pump, and after the reservoir transformation grout passes through the pressurizing device, part of low-pressure grout is pressurized to be in a high-pressure state and then injected into a target stratum.

The present invention discloses a method for experimentally determining the timing of acid fracturing acid liquid backflow in carbonate rocks, which comprises the following steps: S1, based on the injection time, displacement and formation fracture temperature before acid injection during acid fracturing construction, carry out indoor acid etching physical simulation experiment, and monitor the temperature in the fracture at the end of acid injection; S2, taking the temperature monitored by S1 as the initial condition, calculate the formation fracture temperature recovery value under different pump stop times; S3, retain the acid liquid in S1 in the fracture for the pump stop time, synchronously heat the acid etched fracture to the temperature recovery value, and backflow the acid liquid in the fracture; S4, test the conductivity of the acid etched fracture of the rock sample under different pump stop times, and determine the optimal pump stop time and the timing of opening the well for drainage. The present invention takes into account the influence of the temperature recovery in the formation fracture on the conductivity of the acid etched fracture after the acid fracturing pump is stopped, and experimentally determines the timing of acid liquid backflow, overcomes the limitation that the existing backflow timing is determined only by engineering experience, and improves the effect of acid fracturing transformation.

The invention discloses a mountainous area channel compound section excavation method, which belongs to the technical field of water conservancy projects, and comprises the following steps: determining a planned channel depth H and a planned channel width B of a channel according to channel planning; selecting a narrow section with insufficient water depth as a typical grooving section; according to topographic data points measured by typical calculation, drawing a typical calculation cross-section diagram; a first grooving section is excavated, the first grooving section is determined according to the typical calculation section diagram, and the excavation area of the first grooving section is recorded as A11; and a second grooving section is excavated, the excavation area of the second grooving section is set to be A12, and by assuming that the excavation area of the second grooving section is A12 from small to large, the flow velocity reduction value of the typical calculation section is trying to be calculated until the flow velocity is reduced to the design requirement. According to the technology, the two sections are innovatively designed, the requirements for the channel planning scale and flow velocity reduction are met respectively, the water flow velocity is remarkably reduced, the earthwork excavation amount is reduced, the engineering cost and the spoil amount are reduced, and the environmental influence is reduced.

The invention relates to the technical field of petroleum and natural gas exploitation, in particular to a volume fracturing sand-carrying fluid evaluation method and equipment based on friction coefficient, and the method comprises the following steps: manufacturing a plurality of standard samples for testing by adopting a dry standard cylindrical core; testing the standard sample through a friction experiment instrument to obtain a friction coefficient of a control group; quartz sand with different mesh numbers is selected as a proppant, and is matched with different types of fracturing fluids to prepare a plurality of sand-carrying fluids; filling a group of standard samples with various sand-carrying fluids to obtain test samples, and testing the test samples through a friction experiment instrument to obtain friction coefficients of the test samples; calculating the friction coefficient reduction amplitude of each group of standard samples based on the friction coefficient of the control group and the friction coefficient of the test sample; and comparing the normalized friction coefficient reduction amplitude with a sand-carrying fluid evaluation grade to obtain an evaluation grade corresponding to the sand-carrying fluid. According to the method, the performance of the sand-carrying fluid is rapidly and accurately evaluated, the evaluation process is simplified, and the evaluation efficiency is improved.

The application discloses a kind of annular fracturing gas lift liquid discharge pipe columns and operating methods, including multiple groups of gas lift tools and throttling tools, when annular injection gas, gas enters cavity from the gap between the body of gas lift tool and gland, when injection pressure is greater than the pressure in gas cavity, lower valve body is pushed up, and the disengagement between upper ball valve and bidirectional valve seat, injection gas enters the tubing through bidirectional valve seat, and the liquid in the tubing is discharged by the gas lift tool;When injection pressure is lower than the pressure in gas cavity, upper ball valve is seated in bidirectional valve seat, and oil, casing passage is blocked, injection gas pushes annular fluid surface down, and the process of lower gas lift tool is repeated to open the liquid discharge operation, until the liquid in the tubing is discharged completely by the lowermost gas lift tool.The pipe column can realize rapid liquid discharge after fracturing, without well killing, down liquid discharge pipe column completion, avoid the damage to reservoir by well killing, ensure the modification effect, effectively improve the construction efficiency, reduce the operation cost.