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57results about How to "Improve the development effect" patented technology

PEEK medical composite catheter with developing mark and preparation method of PEEK medical composite catheter

The PEEK medical composite catheter comprises an inner layer, a middle reinforcing layer and an outer layer which are sequentially arranged from inside to outside, and the inner layer, the middle reinforcing layer and the outer layer are all made of PEEK materials; the middle reinforcing layer is formed by weaving PEEK lines in a staggered mode, connecting gaps are formed between the PEEK lines, developing units are embedded in the connecting gaps, and the developing units are arranged according to a limited path and form a specified developing graph, so that the developing effect is greatly improved, and the safety of the catheter in the using process is guaranteed.
Owner:NINGBO LINSTANT POLYMER MATERIALS CO LTD

SQL metadata processing method based on large model, SQL statement generation method, electronic equipment and data medium table

The invention discloses an SQL metadata processing method based on a large model, an SQL statement generation method, electronic equipment and a data medium table, and belongs to the technical field of semantic recognition, analysis, retrieval and fusion. In the steps of the method, whether triggering operation needing metadata maintenance exists or not is detected, corresponding metadata processing is carried out according to the triggering operation, and the metadata maintenance efficiency is improved. And uploading a metadata processing result to a corresponding metadata knowledge base, calling a large language model to generate metadata knowledge points corresponding to the slices, converting the metadata knowledge points into corresponding vectors through an embedded model, and storing the vectors in a vector database. According to the method, the existing metadata in the data platform is fully utilized, the metadata maintenance efficiency is improved, the accuracy and consistency of the metadata are enhanced, and the availability of the metadata is improved, so that a developer can perform analysis and development by depending on the updated latest metadata when performing data operation.
Owner:YUNQI SMART TECH CO LTD

GIS switch foreign matter detection method based on multispectral image fusion and related equipment

The invention discloses a GIS switch foreign matter detection method based on multispectral image fusion and related equipment, and belongs to the technical field of electrical equipment foreign matter detection, and the method comprises the steps: obtaining a multispectral image of a to-be-detected GIS switch; and inputting the multispectral image into a pre-trained multispectral fusion model to obtain a multispectral feature map, and inputting the multispectral feature map into a pre-trained multispectral image foreign matter detection model to obtain a foreign matter detection result of the to-be-detected GIS switch. The development and automatic identification of the tiny foreign matter material under different light wavelengths are realized by researching the development technology of the tiny foreign matter material under different light wavelengths and combining multispectral fusion and a multispectral image foreign matter detection algorithm, and the accuracy and robustness of detection are improved.
Owner:XIAN XIKAI POWER EQUIP INTELLIGENT SERVICE CO LTD +2

Image multistage threshold segmentation method based on improved whale optimization algorithm

The invention discloses an image multi-level threshold segmentation method based on an improved whale optimization algorithm, and belongs to the technical field of image processing. The method comprises the following steps: initializing a population; calculating a target function value, and finding out the optimal whale position Xbest of the population; updating the position of the whale in the population; performing combined mutation operation based on individual fitness values; similarity removal operation is carried out, and similar individuals are judged according to the difference between the target function values and the distances corresponding to the two individuals; the fitness value of the whale is recalculated, the optimal individual Xbest of the population is updated, and an optimal threshold value is obtained; outputting a global optimal threshold, and segmenting the image by using the global optimal threshold; and outputting the segmented image. The method has the beneficial effects that the development capability of the algorithm is improved by adaptively adjusting the parameters # imgabs0 # and # imgabs1 # in the contraction surrounding stage; the problem that the whale in the population in the later iteration stage is not subjected to position updating in the random search stage is solved, and the algorithm is prevented from falling into local optimum.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

High-precision inversion method for natural fractures of hot dry rock based on geology-engineering integration

The invention relates to the technical field of natural fracture distribution rules and geological exploration and development, and discloses a high-precision inversion method for natural fractures of hot dry rock based on geology-engineering integration, which comprises the following steps: (1) field data acquisition and preliminary geological modeling: constructing an initial fracture model based on geological data of a hot dry rock reservoir; (2) fracturing experiment and engineering inversion correction: on the basis of the preliminary fracture model, engineering inversion is carried out by using field fracturing test data and micro-seismic information, and inversion correction is carried out on the model; and (3) multi-time iteration closed-loop feedback optimization: performing multi-time mutual feedback correction on a geological modeling result and engineering inversion data to obtain a high-precision fracture distribution model of the hot dry rock reservoir. According to the scheme, geological modeling and engineering inversion are organically combined, a closed-loop feedback mechanism is constructed, and high-precision inversion of fracture distribution is achieved through multiple times of iterative optimization.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Anticorrosion treatment fluid as well as preparation method and application thereof

The invention discloses an anti-corrosion treatment fluid, which is composed of the following components: 30-60% of betaine modified waterborne epoxy resin; 0.3%-8% of triethanolamine; 2%-25% of a curing agent; and the balance of water. The invention further discloses a preparation method of the preservative treatment fluid. The preparation method comprises the following specific steps: (1) preparing betaine with double bonds; (2) preparing betaine modified waterborne epoxy resin; and (3) uniformly stirring the formula amount of betaine modified water-borne epoxy resin, the formula amount of triethanolamine, the formula amount of curing agent and the formula amount of water to obtain the preservative treatment fluid. The invention further discloses the anti-corrosion treatment fluid, and the anti-corrosion treatment fluid prepared by the preparation method is used as an on-line repairing fluid of an underground pipe column for oil exploitation. The method can realize repair of a damaged anticorrosive layer of an anticorrosive oil pipe and anticorrosive maintenance of a non-anticorrosive oil pipe, effectively prolongs the service life of a pipe column, and improves the development effect of a water-driven oilfield.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Method for improving SAGD development effect through double horizontal wells and composite solvent

The invention discloses a method for improving the SAGD development effect through double horizontal wells and a composite solvent. The method comprises the following steps: a circulating preheating stage: injecting steam and a composite solvent containing dimethyl ether and alcohol through long pipes of a horizontal injection well and a horizontal production well, and producing liquid through short pipes of the horizontal injection well and the horizontal production well; in the SAGD production stage, after the injection and production wells are in thermal communication, steam and the composite solvent are injected through the long pipe and the short pipe of the horizontal injection well, and production is conducted from the short pipe through an underground pump of the horizontal production well. Wherein the horizontal injection well and the horizontal production well are double horizontal well sets, the horizontal injection well is located on the upper portion, the horizontal production well is located on the lower portion, the horizontal injection well and the horizontal production well are transversely arranged in a staggered mode, and horizontal sections are drilled oppositely. According to the method, composite solvent viscosity reduction and transverse dislocation double horizontal wells are combined, the triple advantages of differential pressure compensation, gravity oil drainage and solvent viscosity reduction are brought into full play, the reserve utilization degree of strong heterogeneity thin-layer super heavy oil is increased, and meanwhile the oil yield and the oil-gas ratio are increased.
Owner:PETROCHINA CO LTD

Thickened oil emulsifying viscosity reducer composition and application thereof

The invention discloses a thick oil emulsifying viscosity reducer composition which comprises alkyl amide propyl hydroxy sulfobetaine, a quaternary ammonium salt compound containing tertiary amine and hydroxyl and water, and the content of the alkyl amide propyl hydroxy sulfobetaine is 10%-40%, preferably 25%-30%, the content of the quaternary ammonium salt compound containing tertiary amine and hydroxyl is 10%-40%, preferably 25%-30%, and the content of the quaternary ammonium salt compound containing tertiary amine and hydroxyl is 10%-40%. 3%-15%, preferably 8%-10%, of a quaternary ammonium salt compound containing tertiary amine and hydroxyl. The thick oil emulsifying viscosity reducer with strong foaming performance provided by the invention can emulsify thick oil to form an oil-in-water emulsion, so that the viscosity of the thick oil is obviously reduced, and the fluidity of the thick oil is improved; and the viscosity reducer has good foaming performance and foam stabilizing performance, can effectively block high-permeability pore channels, reduces the water channeling degree, and improves the sweep efficiency of the viscosity reducer, thereby improving the recovery rate of heavy oil.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Intelligent control linkage card for intelligent power plant and control method

The invention discloses an intelligent control linkage card for an intelligent power plant and a control method, and the intelligent control linkage card for the intelligent power plant is interconnected with an upper computer system through a PCIe interface to form a control loop; the upper computer system comprises an upper computer of each control system of the intelligent power plant or related host PC (Personal Computer) equipment; the intelligent control linkage card comprises a main card and auxiliary cards, and only one main card is included in one control loop, and the rest are the auxiliary cards; the main card is responsible for scheduling and managing a control task, analyzing and decomposing the control task issued by a service system, and issuing a sub-control task to the control loop according to a scheduling strategy; and the auxiliary card is responsible for subscribing the control message, and executing a corresponding control action according to an instruction if the control message is a control task issued to the auxiliary card by the main card. The card realizes efficient linkage and centralized management of a plurality of control systems in an intelligent power plant, improves the automatic intelligent level of the power plant, and ensures the flexibility and response speed of the control systems.
Owner:CHINA DATANG GRP DIGITAL TECH CO LTD

An open unmanned vehicle navigation control software architecture implementation method

The present application relates to the technical field of unmanned aerial vehicle software architecture, and particularly relates to an open unmanned vehicle navigation control software architecture implementation method, which comprises a functional node group, a node manager, a message transmission manager, a parameter server and a control algorithm library. The functional node group is a cluster of several independent functional nodes, the architecture unifies the external interface function form of each node and is uniformly managed by the node manager; the message manager is a low-overhead high-real-time message transmission mode used for message interaction between nodes; the software architecture is built-in with a parameter server capable of realizing parameter registration, storage and reading functions; meanwhile, some commonly used control algorithm libraries are configured for use by each node. The unmanned vehicle navigation control software architecture has the characteristics of low hardware overhead, high real-time performance, good scalability, supports multi-person collaborative development and can effectively reduce the software development threshold and cycle.
Owner:THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP

Ai-assisted software development method based on rule-skill-manual knowledge architecture

ActiveCN122593773BReduce input burdenSimplify operational links
The application discloses an AI-assisted software development method based on a rule-skill-manual knowledge architecture, and relates to the technical field of AI software development, comprising: setting a constraint priority system according to the execution stage of the AI-assisted software, and constraining each stage of the AI-assisted software; controlling the switching of each stage of the AI-assisted software through a stage state inference mechanism and an artificial confirmation access control mechanism; setting a manual automatic matching and input template generation mechanism and an experience backwriting and knowledge self-growth mechanism; using a statistical quantification and effect evaluation system to statistically analyze the running results of the AI-assisted software; and limiting the execution of the specified stage of the AI-assisted software according to a focus point forced isolation mechanism. The application solves the problems of chaotic specification management, heavy artificial burden, lack of process control, low efficiency of demand specification matching and inability to deposit and iterate engineering knowledge existing in the prior art AI-assisted programming technology.
Owner:JIANGSU MANYUN LOGISTICS INFORMATION CO LTD

System question query method, device and equipment based on natural language

The embodiment of the invention provides a system question query method, device and equipment based on a natural language, and can be applied to the technical field of artificial intelligence. The method comprises the following steps: receiving a first query instruction for a target system; the first query instruction comprises an instruction for an operation user to describe an abnormal problem occurring in a target system based on a natural language; analyzing the first query instruction to obtain query information; encoding based on the query information to obtain a second query instruction; sending a second query instruction to the target system, so that the target system queries and feeds back a first query result according to the second query instruction; the second query instruction and the first query result correspond to a read-write format of a target system; sorting the first query result into a second query result and displaying the second query result to the operation user; the second query result is description content based on a natural language. According to the method, the threshold of checking system problems by non-professionals is reduced, and the development effect of the system is optimized.
Owner:CHINA CONSTRUCTION BANK +1

Method and system for judging super heavy oil steam drive conversion opportunity

The embodiment of the invention provides a super heavy oil steam drive conversion opportunity judgment method and system, and belongs to the technical field of oil exploitation. The method comprises the following steps: classifying historical logging data and historical oil extraction data according to corresponding rotation drive opportunity judgment indexes to obtain a plurality of data sets; based on each data set, generating a judgment rule corresponding to the driving conversion opportunity judgment index item; acquiring acquisition state information in a current acquisition state in real time, and judging whether the current acquisition state information meets a driving conversion condition or not based on a judgment rule of each driving conversion opportunity judgment index item; and when the rotation driving condition is met, steam rotation driving is triggered and executed. According to the scheme, multiple key indexes are comprehensively considered, the limitation of a traditional single temperature judgment method is overcome, the accuracy and reliability of driving rotation opportunity judgment are remarkably improved, and the development effect of the super-heavy oil reservoir is optimized.
Owner:PETROCHINA CO LTD

A method and device for processing information

The present invention discloses a method and device for processing information, and relates to the field of computer technology. A specific implementation of the method includes: a framework capable of creating a calling relationship between a mini-program and an associated application, determining the corresponding relationship between the mini-program and a processing module through the framework, and enabling the processing module to process the synchronous interface or asynchronous interface of the mini-program and the business logic of a multi-process object, thereby improving the ability of the associated application to support the development of the mini-program, reducing the difficulty of adding a new processing module to the associated application, and improving the extensibility of the associated application corresponding to the mini-program.
Owner:BEIJING WODONG TIANJUN INFORMATION TECH CO LTD +1

Oil reservoir differential use and strata series recombination optimization method based on starting pressure gradient

PendingCN121854040AImprove the development effectThe result is reasonableSurveyProduction modelData set
The invention discloses a starting pressure gradient-based oil reservoir differential use and strata series recombination optimization method, which comprises the following steps of: collecting a rock core, and carrying out a starting pressure gradient experiment; cleaning the test data, and removing abnormal values in the data set; starting pressure gradient and permeability data standardization; establishing a characterization model of the starting pressure gradient and the permeability; establishing a multilayer heterogeneous oil reservoir single-layer liquid production capacity model considering the starting pressure gradient; judging whether each oil layer of the target well can be effectively used or not; establishing a strata series recombination chart considering the starting pressure gradient; and based on the strata series recombination chart, carrying out strata series recombination and the like. According to the method, the matching relation between the maximum permeability and the minimum permeability which can be effectively utilized under different pressure difference conditions can be determined, more small layers can be started under the same production pressure difference condition of the same set of layer series, the reservoir which can be started under the same production pressure difference serves as one set of layer series, effective utilization of the small layers in the longitudinal direction is achieved through layer series recombination, and the stability of the reservoir is improved. And the water drive development effect is improved.
Owner:CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +1

Method and device for determining pore size distribution of reservoir core

The invention provides a method and a device for determining pore size distribution of a reservoir core. Dividing a to-be-detected target rock core into a first layer and a second layer, and carrying out nuclear magnetic resonance testing on the to-be-detected rock core to obtain a first corresponding relation between the transverse relaxation time in the first layer and the nuclear magnetic resonance signal intensity and a second corresponding relation between the transverse relaxation time in the second layer and the nuclear magnetic resonance signal intensity; acquiring a third corresponding relation between the diameter of the mesoporous throat in the first layer and the content of the crude oil through a laser confocal microscope; according to the first corresponding relation and the third corresponding relation, performing fitting processing on parameters in a target relational expression between the transverse relaxation time and the pore throat diameter to obtain the target relational expression; and determining the distribution information of the pore throat diameter in the second layer according to the target relational expression, the second corresponding relation and the nuclear magnetic resonance signal intensity in the second layer. On the basis of the method, the accuracy of pore size characterization in the oil reservoir is improved on the premise that the rock core is not damaged.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

A method for evaluating cold damage of high-viscosity heavy oil reservoir

The present application belongs to the technical field of oil production matching technology, and discloses a high-coagulation heavy oil reservoir cold damage evaluation method, which utilizes physical simulation and numerical simulation methods to analyze the reservoir cold damage degree, reversibility, the minimum temperature for avoiding cold damage and the reservoir temperature recovery time from quantitative and qualitative aspects, wherein the physical simulation firstly determines the crude oil properties through the crude oil viscosity-temperature and wax precipitation experiments, then utilizes the core to carry out breakthrough pressure experiments to determine the occurrence temperature of the reservoir cold damage, startup pressure experiments to determine the minimum temperature for avoiding damage, relative permeability experiments to determine the influence degree of the cold damage on the reservoir percolation capacity, mercury injection experiments to analyze the influence of the cold damage on the reservoir pore structure, and two-dimensional nuclear magnetic experiments and laser confocal experiments to determine whether the cold damage is reversible and the reversible temperature; the numerical simulation is utilized to analyze the recovery time required for different liquid amounts and different temperature working liquids to enter the formation, so as to finally achieve the purposes of reducing the development cost of the high-coagulation oil reservoir and improving the development effect.
Owner:PETROCHINA CO LTD

Dual sweet spot prediction method and prediction device for geologic reservoirs

The embodiment of the application provides a double-sweet-spot prediction method and device for a geological reservoir, which comprises the following steps: obtaining a plurality of to-be-analyzed regions according to the three-dimensional distribution information of a double-sweet-spot index of a target reservoir, and obtaining the fracture propagation simulation result corresponding to the to-be-analyzed region; based on the established three-dimensional geological model of the target reservoir, according to the distribution information of the aquifer and the distribution information of the thin interlayer in the three-dimensional geological model of the target reservoir, and through the fracture propagation simulation result corresponding to the to-be-analyzed region, the to-be-analyzed region is marked as a double-sweet-spot region after it is determined that the fracture of the to-be-analyzed region will not communicate with the aquifer and can pass through the thin interlayer; and all double-sweet-spot regions are obtained by traversing the plurality of to-be-analyzed regions of the target reservoir, so as to complete the double-sweet-spot prediction of the target reservoir. By simultaneously considering the distribution information of the complex geological structure of the aquifer and the thin interlayer and the fracture propagation characteristics, the precision of the double-sweet-spot region prediction is improved, and the economy of the reservoir development is improved.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Oil well intermittent production time adjusting and optimizing method

The invention belongs to the technical field of oil field digitization and oil extraction processes, and particularly provides an oil well intermittent production time adjusting and optimizing method which comprises the following steps: establishing a fault diagnosis simplified model of a sucker-rod pump oil extraction system; solving a recursive format of the indicator diagram of each section of the sucker rod string; calculating to obtain an oil well pump indicator diagram; calculating to obtain a pump fullness degree; and calculating the standard deviation of the pump fullness degree, and adjusting the interval according to the standard deviation of the pump fullness degree. The problems that due to the fact that existing initial intermittent production time adjustment is affected by production factors, intermittent production time adjustment is unreasonable, the oil well productivity cannot be improved, and the energy-saving requirement cannot be met are solved. According to the method, the oil well is always produced under the reasonable intermittent production time adjustment, the development effect is improved, and the energy-saving production requirement is met.
Owner:PETROCHINA CO LTD

Visual bending clamp image anti-shake method and system

The invention discloses a visual bending clamp image anti-shake method and system, which relates to the technical field of image communication and comprises an image acquisition module, an image processing module, a data transmission module, a display module and the like. An electronic anti-shake technology is adopted, a high-performance image acquisition module is integrated in the limited clamp body space of the visual bending clamp, the performance of a camera is fully played, and the effects that the response delay time is smaller than 20 ms, 25 frames of images are stably output per second, and each frame of image has 512 * 512 pixels are achieved; the working state of the camera is divided into a mobile working state and a static working state, image anti-shake calculation is carried out only in the static working state, scene requirements are accurately met, the computing power is saved, and image display is more scientific and efficient; a complex feature point matching algorithm is abandoned, the infrared light source is ingeniously introduced, the distance between the camera and the shot part is calculated in real time through the infrared light source, anti-shake calculation is accurately achieved, and meanwhile the tissue developing effect is improved in the static working state.
Owner:XIAN HONGHUI HOSPITAL

Mining method for improving recovery efficiency through conglomerate oil reservoir middle-phase microemulsion flooding

The invention belongs to the field of oilfield exploitation, and particularly relates to an exploitation method for improving the recovery efficiency through conglomerate oil reservoir middle-phase microemulsion flooding. The method comprises the following steps: firstly, establishing a matching relation chart of a middle-phase microemulsion oil displacement system and a reservoir, measuring the porosity, permeability and oil saturation of the reservoir, and selecting the molecular weight and concentration of a polymer and the concentration of a surfactant in the polymer during injection according to the chart; and then injecting the saline water 1, the polymer, the middle-phase microemulsion and the saline water 2 into the reservoir to displace oil so as to finish exploitation. According to the mining method, the overall development effect of middle-phase microemulsion flooding can be obviously improved, and the oil displacement rate of the mining method is obviously superior to that of other mining methods.
Owner:PETROCHINA CO LTD

Carbazole (ketone) oxime ester compound, product containing same and application of carbazole (ketone) oxime ester compound

The invention belongs to the technical field of photocuring, and relates to a carbazole (ketone) oxime ester compound, a product containing the same and application of the carbazole (ketone) oxime ester compound. The structure of the compound is as follows: compared with existing and commercial photoinitiators, the compound has better sensitivity and stability.
Owner:WEISIPU NEW MATERIAL (SUZHOU) CO LTD

Novel mammary tissue marker

The invention discloses a novel breast tissue marker, and relates to the technical field of medical instruments, the novel breast tissue marker comprises a metal core and a marker shell wrapping the outer surface of the metal core, the metal core is a non-magnetic metal core, and the marker shell has a compressed state when not absorbing water and an expanded state when being expanded after absorbing water. The marker shell is of a hard structure in a compressed state, and the marker shell is made of a flexible material in an expanded state. According to the arrangement, the metal characteristic of the metal core ensures that the marker is easy to find under X-ray; due to the non-magnetic characteristic of the metal core, noise generated during magnetic resonance is reduced, the developing property of magnetic resonance is improved, and the marker can be easily found during magnetic resonance; the marker shell has an expansion state of expanding after absorbing water, and can absorb body fluid after the whole marker is implanted into a human body, so that the marker shell absorbs water to expand, the volume of the marker shell is expanded, the developing performance of an ultrasonic image is improved, and the marker shell can be found more easily during ultrasonic examination.
Owner:KANGPAI MEDICAL TECH (SUZHOU) CO LTD +2

Karst gas reservoir development favorable area optimization method and device based on strike-slip fracture

The invention relates to the technical field of oil and gas field development, and discloses a strike-slip fracture-based karst gas reservoir development favorable area optimization method and device.According to the method, firstly, a breaking control karst area is divided into different fracture control areas, and then according to the divided fracture control areas, in combination with the karst water flow direction, the karst gas reservoir development favorable area is optimized; dividing the fracture control area into different fracture control karst reservoir development mode areas on a plane, finally evaluating the stable production capacity of the gas well in the fracture control karst reservoir development mode areas, and finally determining a favorable gas reservoir development area. According to the method, on the basis of strike-slip fracture, deposition, karst and gas well stable production capability evaluation are integrated, a new gas well deployed through the method is formed, high yield is tested, high yield and stable yield of the gas well can be achieved, and the overall development effect of a gas reservoir can be effectively improved.
Owner:PETROCHINA CO LTD +1

Heavy oil in-situ low-temperature oxidation channeling sealing method

The invention provides a thick oil in-situ low-temperature oxidation channeling sealing method. The method comprises the steps that S10, a dominant channel or a steam channeling channel between an injection well and a production well around the injection well is determined; s20, determining the temperature range T1 to T2 of low-temperature oxidation coking of the production well which has a dominant channel or a steam channeling channel with the injection well; s30, testing the bottom hole temperature T and the bottom hole pressure P of the production well having the dominant channel or the steam channeling channel with the injection well, and selecting a corresponding plugging method for plugging according to the bottom hole temperature T and the bottom hole pressure P; and S40, detecting the production well which has a dominant channel or a steam channeling channel with the injection well so as to determine the plugging effect. The problems that in the prior art, after a steam channeling channel is blocked, the temperature resistance is poor, and the blocking cost is high are solved.
Owner:PETROCHINA CO LTD

Method for designing dosage of deep profile control and displacement plugging agent for multi-channel seepage oil reservoir and related device

The invention belongs to the technical field of water shutoff, profile control and displacement, water flooding improvement and recovery efficiency improvement in oilfield development, and discloses a design method for the dosage of a multi-channel seepage oil reservoir deep profile control and displacement plugging agent and a related device. The method comprises the following steps: acquiring seepage data of a main micro-crack, a secondary large pore channel and a water injection well shaft and characteristics of a plugging agent; according to the seepage data of the main micro-cracks, the secondary large pore channels and the water injection well shaft and the characteristics of the plugging agents, the plugging agent slug consumption for plugging the main micro-crack channels, the plugging agent consumption for plugging the secondary large pore channels and the plugging agent consumption required for diffusing and plugging macropores around the water injection well shaft are calculated; and designing the total dosage of the multi-channel seepage oil reservoir deep profile control and displacement plugging agent according to the dosage of the plugging agent slug for plugging the main micro-crack channel, the dosage of the plugging agent for plugging the secondary large pore channel and the dosage of the plugging agent for diffusing and plugging macropores around the shaft of the water injection well. The complex seepage system is regulated and controlled through deep profile control and displacement of the water injection well, and the microscopic seepage condition of the oil reservoir is improved.
Owner:PETROCHINA CO LTD

Fractured tight oil reservoir saturation modeling method

The invention discloses a fractured tight oil reservoir saturation modeling method. The method comprises the following steps that S100, a well-seismic combined structure fault model is established; s200, under the constraint of a sedimentary facies mode, utilizing a single well facies as hard data in the longitudinal direction and data analysis according to a variation function on a plane as guidance, applying an SIS random algorithm to simulate sandstone facies distribution, and establishing a sandstone-mudstone spatial distribution model; s300, based on the seismic fusion attribute three-dimensional body and the sandstone three-dimensional model, establishing a fracture phase three-dimensional geologic model; s400, establishing a fault distance-saturation function through a fitting method, and establishing an oil saturation three-dimensional geologic model according to the function; compared with a traditional saturation modeling method, the saturation model established through the method has the advantages that the control effect of fracture on the oil-water distribution rule is described more accurately, the coincidence rate of the saturation model established through the method is 90% compared with that of a real drilled well, a good oil reservoir geologic model is provided for numerical simulation, and the development effect of an oil field is improved.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

An interventional puncture needle

This utility model discloses an interventional puncture needle, relating to the field of medical device technology. It includes a needle hub and a needle tube. One end of the needle tube is fixedly connected to the needle hub, and the other end is the puncture end. The outer wall of the needle tube is provided with three sections of composite texture. The outer wall of the puncture end of the needle tube has a double-helix cross-shaped groove. The outer wall of the middle section of the needle tube has a reverse-interlaced variable-pitch spiral pattern. The outer wall of the section of the needle tube near the needle hub has a wavy groove. The double-helix cross-shaped groove, the reverse-interlaced variable-pitch spiral pattern, and the wavy groove on the outer wall of the needle tube can generate obvious echo signals under the action of ultrasound. These echo signals form a clear imaging effect in the ultrasound image, significantly improving the clarity and stability of ultrasound imaging. Furthermore, the wavy groove can reduce needle tip stress and improve the bending strength of the needle tube, providing a more precise and safer tool for interventional medical treatment.
Owner:SHENZHEN YUANFA METAL CO LTD

Urban traffic path planning method based on multi-modal multi-target differential evolution

The invention discloses an urban traffic path planning method based on multi-modal multi-target differential evolution. The urban traffic path planning method is specifically implemented according to the following steps: step 1, preprocessing address data and simulating according to the address data to obtain an urban map; 2, determining an optimization target according to a map; and step 3, obtaining an optimal path by using a multi-modal multi-target differential evolution algorithm with the purpose of minimizing an optimization target. According to the method, the problem that a plurality of optimal paths cannot be found in urban traffic path planning through a multi-objective evolutionary algorithm in the prior art is solved.
Owner:XIAN UNIV OF TECH