33 results about "Multiple fractures" patented technology

A controlled rate of propagation of the fluid saturation front or thermal front is desired in may oil and gas and geothermal operations. Natural fractures and fractures created during hydraulic stimulation may have heterogeneous hydraulic properties resulting in uneven flow distributions, therefore leading to short-circuiting and breakthrough issues. The present invention relates to wellbores connected hydraulically by multiple fracture zones; methods are directed to control for even flow distribution among fractures, regardless of heterogeneities in fracture hydraulic properties, and to control propagation of saturation fronts and thermal fronts in subsurface reservoirs.

The invention relates to a well-seismic combined reservoir fracture prediction method based on an artificial neural network, and the method comprises the steps: determining a plurality of fracture parameters representing the fracture development degree based on the obtained logging information of a research region; determining a comprehensive crack prediction index based on the plurality of crack parameters; seismic attributes are extracted by using the acquired seismic data, and target seismic attributes sensitive to the change of the comprehensive fracture prediction index are optimized; based on the seismic attribute data set corresponding to the target seismic attribute, training a pre-established artificial neural network to obtain a comprehensive fracture prediction model; and reservoir fracture prediction is carried out based on the comprehensive fracture prediction model, and a fracture prediction result is obtained. According to the method, fracture information reflected by the seismic data and the logging data is fused through machine learning, so that more comprehensive underground fracture development information is obtained. According to the method, the precision of the logging data and the breadth of the seismic data are integrated, fracture prediction is carried out on the spatial scale, and reservoir fractures can be effectively identified and predicted.

The invention relates to the field of oil and gas drilling and production engineering, and discloses a crack complex index construction method and device, which can obtain normalized parameter value distribution of a plurality of crack basic parameters in a fractured stratum and a relative importance scale between every two crack basic parameters. Based on the normalized parameter value distribution of each fracture basic parameter, generating an objective weight coefficient of each fracture basic parameter; and based on the relative importance scale between every two fracture basic parameters, generating a subjective weight coefficient of each fracture basic parameter. And according to the objective weight coefficient and the subjective weight coefficient of each fracture basic parameter, performing combined weighting on each fracture basic parameter to generate an optimal weight coefficient of each fracture basic parameter. And performing linear weighting on each fracture basic parameter based on the optimal weight coefficient of each fracture basic parameter so as to construct a fracture complex index. The crack complexity index constructed by the method can be used for comprehensively representing the crack complexity of the fractured stratum.

The invention discloses a core multi-scale fracture extraction method based on fracture enhancement and screening technology, comprising: S1, acquiring an original CT scan image of a core containing fractures of different scales; S2, preprocessing the original CT scan image of the core to obtain a core denoised CT scan image and an information enhanced CT scan image; S3, performing macro-fracture segmentation based on the core denoised CT scan image to obtain a macro-fracture segmentation image, performing micro-fracture segmentation based on the information enhanced CT scan image to obtain a micro-fracture segmentation image, superimposing the macro-fracture segmentation image with the micro-fracture segmentation image to obtain a macro+micro-fracture segmentation image; S4, performing multiple fracture screening based on the macro+micro-fracture segmentation image to obtain a core multi-scale fracture extraction result, and adopting different segmentation methods for fractures of different scales, thereby improving the accuracy and stability of fracture identification.

The invention relates to the field of fracture prediction, in particular to a coal-bed gas well fracturing fracture scale prediction method, which comprises the following steps of: establishing a relationship between a filtration coefficient and a burial depth according to a PKN model to obtain a support fracture length; establishing a relation between the hydraulic fracture length and the actually measured support fracture length according to the support fracture length; based on the relation between the hydraulic fracture length and the actually-measured support fracture length, the relation between the micro-seismic monitoring fracture length and the actually-measured support fracture length is established. According to the method, the coal-bed gas well fracturing fracture scale can be accurately predicted through the obtained support fracture length, the hydraulic fracture length and the microseismic monitoring fracture length. And the prediction precision and the fracturing design efficiency are remarkably improved by dynamically correcting the filtration coefficient and quantifying the multi-fracture proportional relation.

The invention relates to a fatigue crack monitoring method and system based on a strip-type strain sensor, and the method comprises the steps: installing the strip-type strain sensor in a to-be-monitored fatigue crack region, and enabling the strip-type strain sensor to be provided with a plurality of resistance strain gauges which are sequentially connected to form a loop, and a fixed resistor which is connected to the loop, a multi-resistor composite network topology structure is formed; when monitoring is started, resistance change data of the strip type strain sensor are collected in real time; based on a finite-state machine model, analyzing a resistance strain gauge fracture mode of the strip type strain sensor according to the resistance change data; and according to the matching of the resistance change data and the position mapping graph of the fracture condition corresponding to the resistance strain gauge fracture mode, obtaining the positioning result of the fatigue crack position. Compared with the prior art, the method has the advantages of high sensitivity, strong discrimination, capability of realizing multi-fracture identification and accurate positioning and monitoring, and the like.

This invention discloses a method for identifying and modeling rock core fractures based on CT scan data, belonging to the field of fracture identification technology. The fracture identification method comprises extracting fracture point information from CT scan data based on CT numerical values; performing ellipsoid fitting on the three-dimensional fracture point information; clustering the fitted characteristic data to obtain multiple fracture clusters; and identifying rock core fractures based on the multiple fracture clusters. This invention improves data processing efficiency and enhances fracture identification accuracy.

The present invention discloses a method, device, storage medium and electronic device for evaluating the effect of fracturing. The method includes: obtaining the starting coordinates, end coordinates and formation time of each fracture line segment in the fracture network obtained by fracturing treatment, obtaining the main fracture according to the starting coordinates, end coordinates and formation time of each fracture line segment, obtaining the fracturing radius according to the starting coordinates and end coordinates of multiple fracture line segments included in the main fracture, and searching the fracturing effect corresponding to the fracturing radius from the correspondence table between the preset radius and the fracturing effect. By adopting the above method, the reliability of the obtained fracturing radius can be effectively ensured, and then the reliability of the obtained fracturing effect can be effectively improved, so as to facilitate the development and production of oil and gas fields according to the fracturing effect.

The utility model relates to a rib bone fracture plate which comprises at least two bone holding parts and a bending part, and the bending part is connected between the two adjacent bone holding parts. The bone holding part comprises a bone holding piece connected with the bending part and a plurality of bone holding claws arranged on the two sides of the bone holding piece. The bending part comprises fixing pieces and a bending piece connected with the fixing pieces, the number of the fixing pieces is two, the bending piece is arranged between the two fixing pieces, and the fixing pieces are connected with the bone holding piece; and the bending direction of the bending piece faces or is far away from the rib direction. When the rib bone fracture plate is used for fixing a plurality of fractured ribs, the fractured ribs move due to lung expansion or contraction caused by human respiration, the bending part is arranged between the two adjacent bone holding parts of the rib bone fracture plate, on the basis that the internal fixation stability is guaranteed, the internal fixation effect of the rib bone fracture plate is greatly improved. And the rib bone fracture plate is driven to deform in the direction towards or away from ribs.

A controlled rate of propagation of the fluid saturation front or thermal front is desired in may oil and gas and geothermal operations. Natural fractures and fractures created during hydraulic stimulation may have heterogeneous hydraulic properties resulting in uneven flow distributions, therefore leading to short-circuiting and breakthrough issues. The present invention relates to wellbores connected hydraulically by multiple fracture zones; methods are directed to control for even flow distribution among fractures, regardless of heterogeneities in fracture hydraulic properties, and to control propagation of saturation fronts and thermal fronts in subsurface reservoirs.

The invention discloses an optimization design method for multiple turning fracturing in a crack, which comprises the following steps: S1, designing a fracturing scale I of main crack fracturing, and carrying out sand fracturing on the main crack according to the fracturing scale I; s2, calculating the dosage of a temporary plugging agent required by steering of the first-stage branch crack, and injecting the temporary plugging agent according to the dosage of the temporary plugging agent to open the first-stage branch crack; s3, the crack initiation angle of the first-stage branch crack is calculated, and the second fracturing scale of the first-stage branch crack is designed according to the crack initiation angle; s4, prepad fluid is pumped and injected, and then sand fracturing of first-stage branch fractures is conducted according to the second fracturing scale; and S5, the steps S2-S4 are repeated, and sand fracturing of the second-stage branch fracture and the third-stage branch fracture is conducted in sequence. According to the method, the fracturing scale of the main fracture and the branch fractures can be optimized, and the flow conductivity and the final yield of the branch fractures are improved.

The application relates to the field of computer-aided medical technology, and discloses a rehabilitation plan recommendation method for multiple fractures, which comprises the following steps: acquiring a first image for representing multiple fractures, the first image being an image in which multiple fracture position bounding boxes are marked on a preset human skeleton image; determining position information of a concurrent injury position according to the first image; and performing rehabilitation plan recommendation according to the position information of the concurrent injury position. The image in which multiple fracture position bounding boxes are marked on the preset human skeleton image is acquired, then the position information of the concurrent injury position is determined according to the image, and thus the rehabilitation plan recommendation can be performed according to the position information of the concurrent injury position. In this way, the rehabilitation training plan can be recommended for the multiple fracture user. The application further discloses a rehabilitation plan recommendation device for multiple fractures, an electronic device and a storage medium.

This invention relates to a fatigue crack monitoring method and system based on a strip strain sensor. The method includes: installing a strip strain sensor on the area to be monitored for fatigue cracks. The strip strain sensor has multiple resistance strain gauges connected sequentially to form a loop, and a fixed resistor connected to the loop, forming a multi-resistor composite network topology; during monitoring, real-time acquisition of resistance change data from the strip strain sensor; based on a finite state machine model, analyzing the fracture modes of the resistance strain gauges in the strip strain sensor according to the resistance change data; and obtaining the location result of the fatigue crack by matching the location mapping diagram of the fracture conditions corresponding to the resistance change data and the fracture modes of the resistance strain gauges. Compared with the prior art, this invention has advantages such as high sensitivity, strong discrimination, and the ability to achieve multiple fracture identification and precise location monitoring.

The invention discloses a method for marking rib fracture for medical images, a computer program product and medical auxiliary diagnosis equipment. The method for marking rib fracture for the medical image comprises the following steps: S102, displaying a schematic diagram of ribs; s104, marking segments of ribs on the schematic diagram; and S106, reading the result of the artificial intelligence analysis of the medical image, and marking the rib fracture on the schematic diagram according to the result of the artificial intelligence analysis of the medical image. According to the method for marking the rib fracture for the medical image, the computer program product and the medical auxiliary diagnosis equipment, the rib fracture can be clearly and easily marked, and a doctor not only can intuitively see the positions of all the fractures, but also can intuitively distinguish the positions of multiple fractures and a single fracture. In addition, by means of the method, the film reading doctor can intuitively explain the illness state to the attending doctor, and the attending doctor can intuitively explain the illness state to the patient. In addition, the doctor can visually see the risk grade of the fracture.

The invention relates to the technical field of improvement of gas injection capacity of a horizontal well of a gas storage, in particular to a gas injection capacity optimization method of the horizontal well of the gas storage, which comprises the following steps: pretreatment before fracturing: removing pollutants in a near-wellbore zone and forming multiple cracks in the near-wellbore zone; hydraulic pulse fracturing is conducted, low-viscosity slickwater is injected into the horizontal well in a variable displacement pulse mode, so that multiple cracks are formed in the immediate vicinity of the wellbore, and shear slip cracks are generated; the crack opening perforation holes are blocked, and the multi-crack opening perforation holes formed in the near wellbore area are blocked; and the new cracks are fractured through circulating hydraulic pulse, new cracks are formed in the near wellbore area, and shear slip cracks are generated. According to the working method of pretreatment before fracturing, hydraulic pulse fracturing, crack opening perforation hole plugging and new crack circulating hydraulic pulse fracturing, by means of high-displacement instant super-fracture pressure, a stratum is pressed open, pump stopping and pressure relief are conducted, then displacement is rapidly increased to expand the crack, reciprocating oscillation is conducted, the crack is made to have shear slippage, and certain flow conductivity is obtained; and the gas injection capacity of the gas storage strong-production and strong-injection horizontal well is improved.

The present invention relates to the technical field of unconventional oil and gas development, and specifically to a system and method for simulating multiple rounds of gas-water alternating pressure-stealing injection-production recovery. This scheme equivalently simulates a fracturing network and a matrix reservoir, and reasonably considers the pressure-stealing injection-production during the well-stealing time, resulting in more accurate results. The fracture core clamping unit and the matrix core clamping unit are swapped in the forward and reverse directions to achieve rapid saturation of the dense core, shortening the reservoir initialization time. The core clamping unit does not need to be repeatedly disassembled and assembled, so the effects of multiple fracture parameters on the three-stage pressure-stealing recovery recovery can be considered. By changing the fracture morphology through replacing the fractured core, the influence of water-gas composite media under different storage and permeability modes on the pressure-stealing recovery capacity of the oil well can be studied. The different storage and permeability modes include multi-stage fracture-matrix reservoirs, large fracture-matrix reservoirs, micro-fracture-matrix reservoirs, and original matrix reservoirs. This ensures the independence and integrity of the fracture core and the matrix core, greatly shortening the experimental time.

The utility model discloses an elisa plate which comprises a plate frame and groove grids, the plate frame is rectangular, the groove grids are located in the plate frame and are latticed placing cavities formed by a plurality of transverse ribs and longitudinal ribs which are perpendicular to one another, a plurality of fracture notches are formed in the longitudinal ribs, and the groove grids are provided with battens matched with the groove grids; the transverse ribs and the longitudinal ribs which are made of elastic materials are used for forming the grooves, meanwhile, the mode that the fracture notches are formed in the longitudinal ribs is adopted, when the battens are installed into the grooves, the broken longitudinal ribs are extruded by the outer walls of the cup bodies of the battens, and interference fit of the protruding structures is increased through elastic deformation generated by the ribs at the positions; therefore, the purpose of fixing the batten is achieved, the use of a convex structure on the edge of a traditional grillage is eliminated, and the risk of liquid residue in the coating process is reduced.

The utility model discloses a transferring device for a nuclear magnetic room, and belongs to the technical field of medical instruments. The protective fence comprises a body, a supporting plate, a bed transferring mechanism, rolling wheels and liftable protective mechanisms, the rolling wheels are arranged at the bottom end of the body, the supporting plate is fixedly arranged at the top of the body, the bed transferring mechanism is arranged on the supporting plate, the liftable protective mechanisms are arranged on the two sides of the supporting plate, and the protective fence is higher than the bed transferring mechanism. According to the utility model, bed crossing can be reduced, and secondary injury is avoided. A patient is directly pushed into a nuclear magnetic examination room, then the bed transferring mechanism is in butt joint with a moving bed of nuclear magnetic examination equipment, examination can be conducted by pushing the bed transferring mechanism to the moving bed, and bed transferring is reduced. The magnetic resonance imaging bed is made of non-magnetic materials, does not interfere with nuclear magnetic resonance equipment, and effectively solves the problem that special patients who are inconvenient to move, have multiple fractures and the like go to the MRI examination bed.

Provided are a method and an apparatus for generating a virtual internal fixture on the basis of image reduction, the method including: recognizing positions and shapes of multiple fracture fragments in a medical fracture image including a fracture site; determining conformity of the multiple fracture fragments by analyzing the shapes of the multiple fracture fragments; performing image reduction of the fracture site by moving the positions of the multiple fracture fragments on the basis of the conformity; and generating the virtual internal fixture for fixing the fracture site for which image reduction has been performed.

The invention relates to a method for calculating the dosage of a temporary plugging agent for fracturing based on reservoir fracture comprehensive evaluation, and belongs to the technical field of fracturing. The method comprises the following specific steps: determining the number of cracks; determining the dynamic fracture height of the fractured interval; the crack width and the temporary plugging agent laying thickness are determined; and calculating the temporary plugging agent dosage under the condition of the thicknesses of the multiple fractured reservoirs. Compared with the prior art which excessively depends on indoor data and fracturing simulation software, the method has the advantages that the field effectiveness is highlighted, the opening number of single-well fractures is obtained through a pre-fracturing test means, the temporary plugging agent dosage under the thickness of an opened fractured reservoir is calculated by combining the relationship between the laying thickness of the temporary plugging agent and the width of the fractures, and dynamic monitoring in the fracturing process is carried out; and real-time adjustment is carried out according to the pressure fluctuation condition, opening and extending of multiple fractures are continuously promoted, a complex fracture net is formed, the purpose of increasing the transformation size is achieved, and effective utilization of a compact oil and gas reservoir is achieved.

Methods for augmenting mining operations with hydraulic fractures. The methods may comprise forming one or more hydraulic fractures near an ore body, which may be filled with an impermeable material, thereby forming an artificial aquitard or a barrier to contaminant migration. The methods may also comprise forming one or more hydraulic fractures within an ore body, injecting a proppant material into the fractures, and cycling a solution through the fractures to perform in-situ mining, or cycling a working fluid through the fractures to provide a mode of heat exchange. The methods may further comprise forming one or more hydraulic fractures at a site of interest to locally influence stress fields in order to prepare the site for material extraction, or disposing within the fractures an energetic material, and detonating the energetic material to extend a single fracture, to form multiple fractures, or to highly fragment rock.

The invention discloses a multi-cluster fracture propagation and proppant migration simulation method considering eyelet erosion. The method comprises the steps that parameters are set, a hydraulic fracturing geometric model is established, and the initial pressure fracture width is set; determining a current time step length; solving an eyelet erosion equation, an eyelet pressure drop equation, an in-seam fluid flow equation and a rock elastic deformation equation when the sand-carrying fluid is started to be pumped; solving a proppant migration equation when the sand-carrying fluid starts to be pumped at the current moment; updating the front edge and the elastic matrix of the crack of each cluster when the tip of the crack of each cluster reaches the critical expansion condition; and when the current moment reaches the total pumping time, ending calculation, and outputting a time-varying diagram of the hole diameter and the hole shape coefficient, a three-dimensional expansion form of each cluster of cracks and an in-crack propping agent distribution cloud diagram. According to the scheme, the expansion form of the multi-cluster fracture and the concentration distribution of the propping agent in the horizontal well segmented multi-cluster fracturing can be evaluated more accurately, and the unconventional oil and gas well fracturing parameter design is guided.

The invention provides a crack type defect evaluation method and device for a hydrogen conveying pipeline and a management system. The method comprises the steps that basic information of the hydrogen conveying pipeline is obtained; determining test conditions according to the basic information and test equipment requirements; respectively carrying out tensile test and fracture toughness test on multiple groups of non-hydrogen absorption samples and multiple groups of hydrogen absorption samples under test conditions to obtain multiple tensile curves and multiple fracture toughness; a failure evaluation curve of the hydrogen conveying pipeline is established based on the tensile curve under the saturated hydrogen absorption time and the multiple fracture toughness; detecting a crack type defect of the hydrogen conveying pipeline by adopting a pipeline defect detection technology, and determining an evaluation point of the crack type defect; and under the condition that the ordinates of the evaluation points are larger than the ordinates of the corresponding failure evaluation points, the hydrogen conveying pipeline is controlled to stop running, and alarm information is sent out. The method solves the technical problem that in the prior art, the safety of the hydrogen conveying pipeline cannot be determined through safety evaluation of cracks caused by the hydrogen induced cracking mechanism of the hydrogen conveying pipeline.

The invention relates to the technical field of oil field oil production engineering, in particular to a full-bore infinite fracturing sliding sleeve for a horizontal well, which comprises a switching mechanism and a plurality of actuating mechanisms, and the plurality of actuating mechanisms jointly form a channel for flowing of fracturing fluid; the actuating mechanism comprises an upper joint and a lower joint; the lower connector is provided with a first gap, and the first gap communicates with the channel. An inner cylinder is arranged on the inner side of the lower joint; a gap II is formed in the inner cylinder; under the action of the switching mechanism, the inner cylinder can slide in the axial direction and has a first position and a second position correspondingly before and after sliding, and when the inner cylinder is located at the first position, the second gap and the first gap are staggered in the axial direction; when the first opening and the second opening are located at the second position, the first opening and the second opening correspond to each other and communicate with each other, the inner barrel and the lower connector are in stop fit, well sections of the horizontal well are fractured conveniently, and after fracturing is completed, the switching mechanism can be automatically matched with different executing mechanisms through the special structures of the switching mechanism and the executing mechanisms; and the same well section of the horizontal well can be fractured for multiple times.

This invention relates to the field of medical device technology, specifically to a balloon device for minimally invasive reduction and fixation of intra-articular fractures. The device includes a cannula, within which an arthroscope slides and engages. A delivery tube for transporting the reduction balloon body also slides and engages within the cannula. The reduction balloon body includes a support balloon mechanism for transporting a support structure and a propulsion balloon mechanism for moving the fracture ends. The support balloon mechanism includes a clamping end and several movable ends. One end of the clamping end is detachably connected to the delivery tube, and a groove for placing the support structure is formed within the clamping end. The movable ends are fixedly connected to both sides of the clamping end. A base plate is fixedly connected within the groove, and several pressure sensors are fixedly connected to the base plate for measuring pressure data when the support structure contacts the fracture ends. The pressure sensors are electrically connected to a display panel for displaying the pressure data. This invention ensures accuracy during the docking of multiple fracture ends and improves the stability of the fixed fracture ends.

The present application relates to the technical field of oilfield production engineering, in particular to a full-bore unlimited-stage fracturing sliding sleeve for horizontal wells, comprising a switching mechanism and a plurality of execution mechanisms, which jointly constitute a channel for fracturing fluid flow; the execution mechanism comprises an upper joint and a lower joint; the lower joint is provided with a fracture one, which is in communication with the channel; the inner side of the lower joint is provided with an inner cylinder; the inner cylinder is provided with a fracture two; under the action of the switching mechanism, the inner cylinder can slide along the axial direction and has corresponding first and second positions before and after sliding; when in the first position, the fracture two and the fracture one are axially misaligned; when in the second position, the fracture one and the fracture two are in correspondence and communication, and the inner cylinder and the lower joint form a stop cooperation, which facilitates the fracturing of the well section of the horizontal well; after the fracturing is completed, the special structure of the switching mechanism and the execution mechanism enables the switching mechanism to automatically adapt to different execution mechanisms and to perform multiple fracturing on the same well section of the horizontal well.

This application relates to the field of solid oxide fuel cell technology and provides a method and apparatus for testing the flexural strength of solid oxide fuel cells (SOFCs). The method includes: generating a particle model of porous ceramic SOFC using the discrete element method (DEM); setting bonding connections between particles in the particle model; calculating the solid bond transmission force between particles after bonding, and calculating the initial value of the micro-stiffness corresponding to the elastic parameters using mean-field theory; performing uniaxial tensile discrete element model simulation based on the initial value of micro-stiffness, and adjusting the micro-stiffness according to the difference between the test results and the target elastic parameters; establishing a double-ring bending discrete element model based on the particle model, simulating multiple fracture processes based on the adjusted micro-stiffness and the double-ring bending discrete element model, and statistically analyzing the results of multiple fractures using the Weibull distribution to predict the flexural strength of SOFC samples of the target size. Generating a particle model based on DEM and performing double-ring fracture simulation improves the versatility of flexural strength testing and reduces testing costs.

This invention discloses a method and apparatus for optimizing horizontal well volumetric fracturing technology. The method includes: determining the fracture density demand index through core flow experiments; establishing a three-dimensional stress field model of the target reservoir and determining the fracture equilibrium propagation simulation index based on the three-dimensional stress field model; determining the fracture equilibrium propagation monitoring index based on the perforation diameter enlargement data and fiber optic signal intensity data of multiple fracture clusters in the target reservoir; determining the multi-cluster fracture equilibrium propagation capability index based on the fracture equilibrium propagation simulation index and the fracture equilibrium propagation monitoring index; and determining the horizontal well volumetric fracturing technology for the target reservoir based on the fracture density demand index and the multi-cluster fracture equilibrium propagation capability index. This invention can improve the fracturing effect and the efficiency of fracturing parameter determination, and optimize the horizontal well volumetric fracturing technology for different types of reservoirs.

This invention relates to the field of oil and gas exploration and development, and discloses a method, apparatus, equipment, and medium for determining the area of ​​fracture current anomalies. It can generate conductivity imaging data and trajectory curve expressions for multiple fractures based on raw electrical imaging logging data from fractured oil and gas reservoirs. The conductivity imaging data and each trajectory curve expression are mapped to a predetermined three-dimensional coordinate system to generate a fracture trajectory curve corresponding to each trajectory curve expression and multiple discrete data points corresponding to the conductivity imaging data in the three-dimensional coordinate system. The three-dimensional coordinate system includes a depth axis, a wellbore expansion direction axis, and a conductivity axis. The background conductivity of the three-dimensional coordinate system is determined based on each discrete data point. Based on the background conductivity and each fracture trajectory curve, the current anomaly area of ​​each fracture is determined. This invention can effectively determine the area of ​​fracture current anomalies, enriching the methods for determining fracture current anomalies.

The invention discloses an ultra-deep ultra-high temperature carbonate rock reservoir communication multi-fracture-cavity reconstruction method and application, and the method comprises the steps: selecting at least three to-be-communicated fracture-cavity bodies within a first preset distance in a first horizontal principal stress direction of a target carbonate rock reservoir based on a three-dimensional geophysical prospecting earthquake and geological interpretation result, well spacing is conducted at a second preset distance in the second horizontal principal stress direction of the target carbonate rock reservoir; high-viscosity fracturing fluid is pumped through a large-displacement gel fracturing technology to communicate with the middle fracture-cavity body, and after an artificial fracture between the arranged vertical well and the middle fracture-cavity body is generated, a proppant is pumped to support the artificial fracture; after the pump is stopped for preset time, temperature-control variable-viscosity fracturing fluid is pumped and injected, so that the temperature-control variable-viscosity fracturing fluid temporarily plugs the artificial crack at the set position, and crack initiation is conducted at a stress weak point between the shaft and the temporary plugging point; and continuously pumping sand-containing gel fracturing fluid with a large displacement, and fracturing the turned artificial crack at the crack initiation point to communicate with the rest to-be-communicated fracture-cavity bodies.