88 results about "Volcanic rock" patented technology

The invention discloses a lithology generality joint feature classification model construction method, which relates to the technical field of intelligent geological prospecting, introduces a cross-scale feature alignment mechanism, and utilizes scale transformation factors to dynamically match the resolutions of macroscopic, mesoscopic and microscopic features, thereby avoiding feature distortion caused by direct fusion; for example, in a volcanic rock and sedimentary rock mixed area, rough texture of a remote sensing image originally conflicts with smooth response of a logging curve, but through alignment processing, the model can automatically balance credibility of different data sources, and misjudgment is reduced; inter-scale dependence modeling is further enhanced through introduction of the feature association graph, vertical sequence association of a thin interbed is captured through a graph structure, the boundary of a millimeter-level thin layer is made clear, and the problem of fuzziness caused by neglecting of interlayer interaction in an existing scheme is solved.

The application discloses a low-carbon-source denitrification method, and belongs to the technical field of sewage treatment. The method comprises the following steps: mixing FeSO4 and FeCl3 solutions; adjusting the pH value of the mixed solution to 10-12 to generate iron oxide precipitate; mixing the iron oxide precipitate with volcanic rock at a weight ratio of 100:1, and heating and drying the mixture at 200-300 DEG C to prepare a biological carrier; using the prepared biological carrier to treat effluent from a biochemical secondary sedimentation tank in a treatment unit; performing backwashing after the treatment unit is operated for 3-7 days; controlling the DO concentration of incoming water to be not more than 1 mg / L; when the DO concentration of the incoming water is more than 1 mg / L, reducing the aeration amount of the upstream or increasing the HRT of the treatment unit; and when the DO concentration of the incoming water is not higher than 1 mg / L, controlling the HRT of the system to be not more than 40 min. The method is mainly used for efficiently treating low-carbon-source sewage, improving the denitrification efficiency and reducing the treatment cost.

This utility model belongs to the field of ecological restoration technology, specifically relating to an ecological filtration pond for aquatic ecological restoration. It includes a filtration pond with a partition fixedly connected to its inner wall. The partition is lower than the height of the filtration pond. The left side of the partition is a physical adsorption chamber, and the right side is a sedimentation chamber. The physical adsorption chamber is equipped with a storage mesh frame filled with volcanic rock. A landscape stone is laid on top of the storage mesh frame, and a planting trough is pre-reserved on top of the landscape stone, with a planting frame installed in the planting trough. Activated carbon granules are laid in the sedimentation chamber. A hollow step is fixedly connected to the left side wall of the filtration pond, and a water pump is installed within the step. This utility model can adsorb and purify impurities through physical adsorption, and further purify them by combining green planting and biological action. Furthermore, the green plants and adsorption materials are easy to remove and replace, effectively reducing water turbidity and improving purification efficiency.

The invention discloses a volcanic rock lithology identification method based on latent attribute characterization and Bayesian inference. According to the method, volcanic rock core / rock debris slice identification and related geochemical data are taken as calibration basis, multiple groups of logging curves sensitive to the lithologic characteristics of volcanic rock are preferably selected, and quality control and normalization processing are carried out; the method comprises the following steps: learning from a multi-logging curve through an encoder-decoder to obtain a group of mutually decoupled latent attribute representations, and respectively constructing a silicon dioxide content Bayesian classification model and a volcanic rock cause Bayesian classification model by taking the latent attributes as input; the probability prediction based on the silicon dioxide content range (basic / neutral / acidic) and the volcanic rock cause type is realized, the two prediction results are combined, and finally the volcanic rock lithology of the corresponding well section is determined. Meanwhile, the quantitative output uncertainty is used for multi-solution risk prompt, so that the accuracy, the stability and the credibility of a prediction result are improved.

The present application relates to the field of fabric production, in particular to a production process of volcanic rock heating fabric, a production process of volcanic rock heating fabric, wherein the grey cloth pretreatment includes a feeding roller and a winding roller for conveying the base cloth, a selvedge processing mechanism is arranged between the feeding roller and the winding roller and located on both sides of the base cloth, base platforms are arranged on both sides of the base cloth along the edge direction thereof for mounting the corresponding selvedge processing mechanism, the selvedge processing mechanism includes an air knife sprayer and a blocking component for preventing the trimmed lint from adhering to the surface of the base cloth, the blocking component and the base platform form a temporary space for the selvedge to pass through and be processed, in the process of trimming the selvedge of the base cloth, the blocking component limits the trimmed lint in the temporary space, prevents the lint from adhering to the surface of the base cloth, avoids the selvedge of the base cloth being hooked and torn in the subsequent steps, and improves the production efficiency and the production quality of the final fabric.

This invention discloses a high-elasticity modulus concrete and its preparation method. The high-elasticity modulus concrete comprises, by weight, cementitious materials: volcanic rock: river sand: water: water-reducing agent in a ratio of 575:990:755:115:(20-22). The cementitious materials, by weight, comprise: cement: fly ash: silica fume in a ratio of (375-435):85:55. This invention utilizes volcanic rock as coarse aggregate to construct a rigid skeleton, and incorporates cementitious materials to leverage their synergistic physical filling and volcanic ash effect, optimizing the matrix density and interfacial transition zone structure. Combined with ultrasonic-assisted mixing, it achieves uniform dispersion and efficient hydration of fine materials. This concrete exhibits high compressive strength and high elastic modulus, demonstrates low shrinkage and creep characteristics, good volume stability, and excellent durability. It is suitable for high-rise and super high-rise buildings and large-span structural engineering, significantly improving structural stiffness, saving building materials, and increasing usable space utilization.

Method for manufacturing composite cement, wherein a supplementary cementitious material is obtained from a marine sediment deposit fed by erosion of volcanic rock to form sedimented pozzolan by dredging the sediment deposit, dewatering the dredged sedimented pozzolan to a water content of below 20 wt.-% with respect to the total weight of sedimented pozzolan and water, washing the sedimented pozzolan with fresh water to a chloride content below 0.2 wt.-% with respect to the total solids, and drying to provide the supplementary cementitious material, and mixing the supplementary cementitious material with a hydraulic cement to provide the composite cement, as well as use of the obtained supplementary cementitious material for making composite cements and supplementary cementitious material and composite cement obtainable by the method or use.

The application discloses a preparation method of imitation volcanic stone foamed ceramic, which comprises the following steps: (1) preparing foamed ceramic powder: after a known foamed ceramic base material taking silicon carbide as a foaming agent is prepared into a base powder through ball milling and spray granulation, a pore-forming material is added and uniformly mixed, the mass ratio of the base powder to the pore-forming material is 70-85:15-30, and the particle size range of the pore-forming material is 6-30 meshes; (2) spreading the foamed ceramic powder according to a preset thickness in a refractory kiln, and scraping; (3) sending into a kiln for firing, the firing temperature is 1160-1170 DEG C, and the firing period is 8-13.5 h; (4) removing the refractory kiln after cooling out of the kiln, and thus imitation volcanic stone foamed ceramic is obtained. In step (1), the content of silicon carbide in the pore-forming material is greater than the content of silicon carbide in the foamed ceramic base material. The foamed ceramic after firing can form an imitation volcanic stone decorative effect with pores of different sizes.

The invention belongs to the technical field of oil exploration and development, and discloses a method for identifying volcanic rock weathering crust and interior periods based on multiple seismic attributes, which comprises the following steps: determining a logging chart division boundary; a seismic data volume corresponding to the logging data is read, a cross plot is drawn, and a seismic data volume correction formula is obtained through linear fitting; correcting the seismic data volume of the research area; dividing the corrected data volume through a logging plate division boundary to obtain a first probability volume P1; determining an impedance plate division boundary; performing inversion to obtain an inversion resistance body; dividing the inversion impedance body according to an impedance plate division boundary to obtain a second probability body P2; performing weighted calculation on the P1 and the P2 to obtain a volcanic rock interior period identification parameter body P3; and establishing a recognition plate by using the P3, and determining a division boundary of the recognition plate to obtain a volcanic rock interior period recognition probability body P4. According to the method, well-seismic data unification is realized, and the weathering crust and the inner curtain period can be effectively identified in combination with an impedance inversion data body prediction result.

The invention relates to the technical field of environmental sludge treatment, in particular to sediment environment in-situ remediation particles and a preparation method thereof. The soil conditioner is prepared from the following raw materials: zeolite powder, volcanic rock powder, bentonite, silica sol, a functional component loaded precursor and bacillus spore powder. The sediment in-situ remediation particles are of a core-shell structure, activated zeolite-volcanic rock serves as an inner core to construct a porous framework, Fe / Mn and Mg / Ca loading sites are combined, pollutant adsorption, fixation and passivation are achieved, the sediment microenvironment is improved, conditions are created for outer-layer bacillus bioremediation, and space-time synergy of physicochemical and bioremediation is formed; a preparation route of curing nucleation and then low-temperature coating is adopted, the contradiction between mineral roasting and microorganism temperature intolerance is solved, the spore activity is guaranteed, and the loss resistance of the spore is improved.

The invention discloses a volcanic rock gas-bearing prediction method, electronic equipment, a storage medium and a device. The method comprises the steps that a training set and a verification set are established based on logging curves of multiple wells; constructing a gas-bearing prediction model based on an LASSO algorithm; training a gas-bearing prediction model based on the training set; verifying the trained gas-bearing prediction model based on the verification set; and carrying out volcanic rock gas-bearing prediction based on the verified gas-bearing prediction model. According to the method, the relationship between the gas-bearing interpretation result and the lithofacies and conventional logging curve is established according to the existing logging curve through the LASSO algorithm, lithofacies constraint is added during gas-bearing prediction, man-made interference is reduced, lithofacies information is added during prediction, and the accuracy of gas-bearing prediction is effectively improved.

A self-defense glove device is provided. The device is comprised of a glove configured to enhance user protection and enable physical engagement during high-risk encounters. The glove body is comprised of at least one volcanic rock pad that is affixed or embedded within the body at locations such as the knuckle area or dorsal hand region. The pads are composed of naturally flexible volcanic stone or synthetic composites incorporating pulverized volcanic material with pliable binders. The pads may be encapsulated in a polymeric matrix to maintain integrity under repeated impact. The device further comprises a fastening mechanism that may be further comprised of a padding to ensure wrist retention and comfort. An exterior abrasive coating may be further applied to specific areas of the outer surface of the body, forming a textured surface for increased friction and offensive contact.

The utility model discloses a device for underwater laying reynolds protective pad, include: outer frame, be square, four corners are provided with lifting lug, the left side plate bottom of outer frame is equipped with a plurality of first vertical board, is provided with first jack on the first vertical board, the right side plate bottom of outer frame is equipped with a plurality of second vertical board, is provided with second jack on the second vertical board, bearing rod is equipped with a plurality of, each bearing rod is slidably arranged in first jack and second jack, and one end is equipped with connecting through -hole, steel wire rope is equipped with a plurality of, is connected to each bearing rod respectively, pulling device is used for pulling steel wire rope, the utility model discloses through the pre -setting one outer frame, is used for containing reynolds protective pad, so that in the hoisting process, with outer frame replaces reynolds protective pad as hoisting force structure, avoids the prior art with reynolds protective pad as hoisting force structure, makes the displacement of volcanic rock due to hoisting.

The application discloses a qualitative identification method for thin-layer mudstone interlayer in volcanic rock, which comprises the following steps: firstly, determining a mudstone section stably existing in the whole area through core observation and logging data, and taking the mudstone section as a standard section; secondly, selecting three curves (a neutron logging curve, an acoustic time difference logging curve and a density logging curve) responding best to the mudstone, standardizing logging curves of the standard section and the volcanic rock section in the whole area, and determining the peak value and the distribution range of the logging curves; selecting sample points with the best effect in the mudstone section and the volcanic rock section, taking the acoustic time difference logging curve as the horizontal coordinate, and taking the neutron logging curve and the density logging curve as the vertical coordinate respectively to establish a logging interpretation chart, qualitatively determining the identification standard of the mudstone and the igneous rock, and predicting the mudstone interlayer in the volcanic rock in a single well according to the chart. The application solves the problem of qualitative identification of the thin-layer mudstone interlayer in the volcanic rock, and provides reliable technical support for the analysis of the remaining oil potential of the igneous rock.

The invention discloses a low-water-absorption high-strength porous pelelith lightweight aggregate and a preparation method thereof, and relates to the technical field of artificial lightweight aggregates for building materials. Porous pelelith particles are used as a porous core part, and low-melting-point glass powder, plant ash, fly ash, coal gangue, fluorite and the like are used as surface coating raw materials. The preparation method comprises the following steps: shaping porous pelelith particles, weighing and homogenizing coating raw materials in proportion to obtain composite powder, uniformly coating the surfaces of the shaped porous pelelith particles with the composite powder by using a granulator, fully drying, sintering, and finally cooling along with a furnace. The lightweight aggregate has the advantages of low water absorption rate, high cylinder compressive strength and the like, and can meet the performance requirements of the lightweight aggregate for concrete; meanwhile, the adopted coating raw materials are mainly various solid low-melting-point materials or low-cost materials, and the resource utilization scene of the solid low-melting-point materials can be further expanded; and the heat treatment temperature is as low as 250 DEG C, so that the energy-saving effect is obvious.

The invention belongs to the technical field of plant cultivation, and particularly relates to a cultivation medium for citrus potting and a preparation method thereof. The culture medium for citrus potting comprises the following components in percentage by volume: 20%-30% of sandstone, 25%-35% of humus soil, 15%-25% of red soil, 5%-10% of decomposed mushroom dregs and 10%-20% of volcanic rock. According to the citrus potting culture medium, the gravel, the volcanic rock, the humus soil and the red soil are scientifically proportioned, on one hand, the gravel forms a drainage main channel, volcanic rock micropores adsorb moisture and air, and the humus soil and the red soil form water retention aggregates, so that a rhizosphere environment with high air permeability, water permeability and water and fertilizer retention is created, and accumulated water hardening and rapid water loss are avoided; meanwhile, the red soil stabilizes pH and provides mineral elements, and quick-acting and long-acting nutrient supply is achieved through the decomposed mushroom residues and the humus soil; on the other hand, gravels and volcanic rocks are used as frameworks, humus soil and red soil are used as fillers, the stable structure of the matrix is guaranteed, and oranges are prevented from lodging due to overweight fruit bearing.

The invention discloses a longitudinal and transverse wave VSP-based segmented amplitude attenuation factor calculation method and system and a medium, and relates to the technical field of geophysical exploration and rock physics analys.The method is improved on the basis of a traditional amplitude attenuation factor calculation method, a segmented geologic model of a target area is constructed based on a strong reflection interface, longitudinal wave and transverse wave zero offset VSP data is utilized, and the seismic data of the target area is calculated. The geological amplitude attenuation factor of each layer section of the layered medium is obtained through longitudinal and transverse wave joint inversion and segmented quantification, accurate compensation of stratum amplitude attenuation under strong reflection shielding of a coal seam, a volcanic rock layer and the like is achieved, and more reliable parameters are provided for solving the problems of data distortion and the like caused by shielding effects below strong reflection in ground seismic data processing. The obtained amplitude attenuation factor can be directly used for guiding fidelity processing and high-resolution imaging of ground seismic data, and signal recovery and imaging quality of deep and hidden reservoirs are remarkably improved, so that a more reliable geophysical basis is provided for subsequent fine description of the reservoirs and fluid detection.

The present application relates to a kind of preparation methods for different characteristic Mars weathered layer simulation object, comprising: obtaining the chemical element information of real Mars weathered layer, selecting the brown red volcanic rock with approximate chemical characteristics as raw material and drying;The dry raw material is pulverized, classified and screened, and a plurality of particle size components are obtained;Design different types of target particle size grading, to simulate the typical mechanical properties of different regions on the surface of Mars, each grading can be used as dry state regolith sample.Add water or salt solution to dry state regolith sample, and form frozen sample by low temperature, to simulate high latitude or shallow ice frozen environment on Mars.In addition, secondary mineral powder can also be added to simulate the surface environment of Mars after acidification or salinization weathering, to realize more complex chemical characteristics demand.The present application is simple in process, suitable for mass production, and the simulation object and Mars weathered layer have good correspondence in chemical composition, physical and mechanical properties, and simulation regolith can be produced to cope with various working conditions.

The invention discloses volcanic rock core splitting equipment, and belongs to the technical field of volcanic rock core splitting. The volcanic rock core splitting equipment comprises a lifting type cutting assembly used for carrying out core splitting on a volcanic rock sample, a clamping assembly used for fixing the volcanic rock sample and a moving assembly used for moving the clamping assembly, the clamping assembly comprises two sets of clamping parts used for clamping the volcanic rock sample, the two sets of clamping parts are oppositely arranged, and the clamping parts are arranged on the lifting type cutting assembly. The bottom parts of the two groups of clamping parts are hinged, and the driving assembly is used for controlling the opening and closing of the two groups of clamping parts; according to the invention, through the arrangement of the two groups of clamping parts, the two ends of a sample can be clamped and fixed, and the driving assembly is matched in the cutting process, so that the occurrence of saw blade clamping can be reduced, and the occurrence of saw blade clamping can be reduced while the sample is fixed; therefore, the problem that in the prior art, in the volcanic rock sample core splitting process, a sample fixing mode is prone to being clamped by a saw blade is solved.

The invention relates to an evaluation method of a broken basin volcanic rock reservoir, and belongs to the technical field of physical exploration. Determining the parameter value of the lower limit of the reservoir through the relationship between the pore throat radius distribution and the mercury injection displacement pressure; constructing a geologic function related to the porosity, the gas saturation and the permeability; and integrating the reservoir average pore throat radius, the comprehensive evaluation parameters, the porosity and the permeability, and establishing a reservoir comprehensive grading evaluation standard. Based on well drilling logging data and seismic data, a geological basis is provided for work such as evaluation, exploration and development deployment of a favorable area of the volcanic gas reservoir.

The invention provides a volcanic rock-based heat storage and warm keeping fiber and a preparation method thereof, and the method comprises the following steps: S1, dispersing volcanic rock in a sodium carbonate aqueous solution to obtain porous volcanic rock; s2, mixing the porous volcanic rock with paraffin to obtain the porous volcanic rock loaded with the paraffin; s3, dispersing the porous volcanic rock loaded with the paraffin into nano oxide hydrosol to obtain hole-sealed volcanic rock; wherein the nano oxide comprises silicon dioxide; s4, the hole-sealed volcanic rock is subjected to surface modification through an amino silane coupling agent, and heat storage and heat preservation particles are obtained; and S5, mixing the heat-storage and warm-keeping particles with polyester chips, and performing melt spinning to obtain the heat-storage and warm-keeping fiber. A stable phase change heat storage structure is constructed and is introduced into a fiber system in a form suitable for polyester melt spinning, so that the fiber has stable heat storage capacity and relatively good warm keeping durability while maintaining good processing performance.

The invention relates to the technical field of oil and gas reservoir transformation, in particular to an in-section balanced fracturing transformation method suitable for a volcanic rock reservoir. The method comprises the following steps: step 1, carrying out stress grading on fracturing desserts in any fracturing section; 2, determining the number of perforation clusters corresponding to each stage of fracturing dessert and the number of perforation of each cluster; 3, perforation is carried out on the target fracturing section according to the determined perforation cluster number and the perforation number of each cluster; 4, fracturing transformation is conducted on the target fracturing section step by step in cooperation with a seam temporary plugging technology till transformation is completed; and 5, the steps 1-4 are repeated till transformation of all the fracturing sections is completed. According to the technical scheme, the fracturing technology can be more targeted and effective, a larger-volume fracture net is achieved, and the purpose of balancing volume fracturing is achieved.

This invention discloses a modified volcanic rock ultrafine composite admixture and its preparation method, belonging to the technical field of building materials and solid waste resource utilization. The admixture is composed of volcanic rock, S95 grade mineral powder, fluorogypsum, silica fume, lime powder, nano-alumina, triisopropanolamine, and polycarboxylate superplasticizer in a specific ratio. The invention also discloses its preparation method, including drying, weighing, and co-grinding the raw materials to a D50 of 7.0-8.0 μm. Through the synergistic activation effect among the components, especially the depolymerization of the volcanic rock vitreous network by F⁻ in the fluorogypsum, the adjustment of the calcium-silicon ratio between the mineral powder and volcanic rock, and the combined effect of nanomaterials and chemical additives, the early and late-stage activity of the volcanic rock is significantly improved, and the water demand is reduced. The obtained admixture has a 7-day activity index ≥85%, a 28-day activity index ≥88%, and a water demand ratio ≤108%, and can directly replace traditional mineral powder and fly ash in concrete, solving the problem of the scarcity of high-quality admixtures in western regions, and has significant economic and social benefits.

This utility model discloses a double-cavity volcanic rock mineral-insulated fire-resistant busbar structure, including side plates, cover plates bolted to the top and bottom of the side plates, and multiple copper busbars. A heat dissipation plate is engaged with the inner walls of the two side plates near the center, dividing the interior into a main cavity and an auxiliary cavity arranged vertically. The main cavity is filled with a volcanic rock insulation layer, which wraps around the outer walls of the multiple copper busbars. This utility model, by creating a double-cavity busbar structure, utilizes the main cavity and auxiliary cavity to form a double fire barrier, improving the overall fire resistance. Furthermore, the auxiliary cavity contains cooperating heat-conducting fins and volcanic rock particles to enhance natural heat dissipation efficiency.

The embodiment of the present application provides a kind of production method, device and equipment of volcanic rock model and storage medium, belong to model making field.The production method of volcanic rock model includes: the characteristic data of volcanic mechanism is obtained;According to characteristic data, the digital model of volcanic mechanism is generated;According to digital model, the mold of volcanic mechanism is manufactured;Based on digital model, according to the processing of mold according to preset production process, the model of volcanic mechanism is obtained;Preset production process includes carving process and pouring process.The present application improves the intuitiveness of volcanic rock reservoir.

The invention belongs to the technical field of groundwater remediation, and relates to a method for remedying chlorohydrocarbon polluted groundwater by coupling ozone micro-nano bubbles with a circulating well, which comprises the following steps: installing a circulating well in a simulation tank, filling the tank with medium sand to simulate a groundwater aquifer medium, then introducing trichloroethylene sewage with a set concentration, and constructing a groundwater pollution simulation system; ozone micro-nano bubbles are generated; and coupling the ozone micro-nano bubbles with the aerodynamic circulation well to carry out underground water remediation. According to the method, volcanic rock is used as a catalyst, ozone micro-nano bubbles and a pneumatic circulating well technology are creatively fused, and typical chlorinated hydrocarbon-trichloroethylene polluted underground water is treated in a targeted mode. Experimental comparison shows that compared with traditional hydrogen peroxide or metal salt catalysis, the method has the advantages that on the basis of saving the cost, the remediation period can be remarkably shortened, the pollutant removal rate is increased, secondary pollution is reduced, the underground water remediation process is accelerated, the dual goals of energy conservation and high efficiency are achieved, and the method has important practical application value and wide popularization prospects.

This invention belongs to the field of aquaculture wastewater treatment technology, specifically relating to a quantitative addition of a multi-strain volcanic rock carrier composite, its preparation method, and its application. The floating volcanic rock of this invention can be stably suspended in the upper high-oxygen zone, suitable for aerobic nitrifying strains such as *Nitrobacterium velutipes* and *Nitrosomonas cerevisiae*; the suspended volcanic rock can remain in the middle medium-oxygen zone, carrying facultative strains such as *Pseudomonas fluorescens*; and the submerged volcanic rock can sink to the bottom low-oxygen / anaerobic zone, fixing denitrifying strains such as *Rhodopseudomonas palustris*. A vertical space of at least 2 meters in water depth is sufficient to construct a clear oxygen gradient, meeting the metabolic needs of different strains, thus achieving compatibility between the carrier and water depth and oxygen layer. This invention can precisely control the dissolved oxygen concentration in each layer, effectively avoiding oxygen layer homogenization caused by single aeration, helping to ensure the synergistic effect of aerobic, facultative, and anaerobic strains, and adapting to the growth needs of various functional bacterial communities.

The present application belongs to the technical field of river ecological restoration and water purification, and particularly relates to a river water ecological regulation and control device, aiming at solving the problems of poor microbial habitat, insufficient carbon source supply, limited purification effect and the like in the existing river water ecological restoration. The device is composed of a four-pyramid frame, a steel wire mesh, a central carbon source slow-release pipe and porous fillers. The four-pyramid frame is formed by welding profile steel, and the bottom and the periphery are welded with the steel wire mesh. The central carbon source slow-release pipe is vertically arranged in the center of the four-pyramid frame, and the pipe is filled with corn cobs. The porous fillers are filled in layers from bottom to top, the bottom layer is a volcanic rock layer, the second layer is a zeolite layer, and the top layer is a mixed layer of volcanic rock and zeolite. The present application provides a stable habitat for microorganisms and benthic animals, continuously releases carbon sources, strengthens the nitrogen cycle function, and has a significant water purification effect. The device has a stable structure, is convenient to maintain, has low cost, causes no secondary pollution, and can be widely applied to various river ecological restoration projects.

The application provides a volcanic rock matrix-fracture double medium type oil reservoir evaluation method and system, and belongs to the technical field of geological engineering, oil reservoir technology and well logging interpretation.The application establishes a matrix porosity calculation chart by core calibration logging, adds a fracture pore as a conductive channel in an Archie sandstone conductive model, deduces fracture porosity, and finally combines the matrix pore, the fracture pore, the oil saturation and the oil test result to form a matrix-fracture type double medium oil and gas reservoir quantitative identification method.The application fills the gap of the research on the matrix and the fracture at the same time, improves the oil reservoir identification precision, and is more strict and reasonable in the identification standard, and is high in reliability.

The present application relates to the technical field of deep gas risk exploration, and particularly relates to a deep low exploration area volcanic reservoir prediction method, device, equipment and medium. The method comprises the following steps: according to the reservoir sensitive parameters of a research area, a post-stack virtual well constrained inversion is selected to obtain a low frequency model of a full low frequency band of a virtual well; a geological model is established based on the low frequency model of the full low frequency band and seismic interface information; based on the reflection characteristics of the volcanic rock in the research area, a Laplace operator frequency division configuration attribute is used to depict the volcanic rock body; according to the geological model and the volcanic rock depiction result, a configuration attribute of a slice position of a target layer is extracted, low frequency modeling is carried out based on the configuration attribute constraint to obtain a configuration attribute volume controlled low frequency model; and inversion is carried out based on the configuration attribute volume controlled low frequency model to obtain a volcanic reservoir prediction result of the research area. The present application realizes the spatial distribution depiction of irregular geological bodies, and the depiction of special geological bodies is clearer, which has an important supporting role for risk well deployment.