19 results about "Poikilitic" patented technology

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 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 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 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.

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 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.

The invention relates to the technical field of volcanic rock cover layer analysis devices, in particular to a volcanic rock cover layer component analysis and recognition device which comprises a base, a positioning assembly, a first recognition assembly and a second recognition assembly. The upper side of the positioning assembly is provided with a first identification assembly capable of scanning and identifying the volcanic rock layer sample from top to bottom and obtaining a first scanning result, the second identification assembly comprises a synchronous material taking assembly, a feeding conveyor belt and a reagent supply mechanism, and the synchronous material taking assembly is arranged below the positioning assembly. The device is reasonable and compact in structure and convenient to use, the first recognition assembly obtains the first scanning result to provide guidance for subsequent reagent assay detection, the reagent assay efficiency and the detection accuracy are improved, the overall automation degree can be greatly improved by arranging the synchronous material taking assembly, the feeding conveying belt and the reagent supply mechanism, and the labor intensity of workers is reduced. The detection efficiency is improved.

The application discloses a kind of overpressure genesis contribution evaluation methods of volcanic gas reservoir based on well logging identification, it is related to the technical field of oil and gas exploration and development, its steps are as follows: first step: using geological data, distinguish overpressure and normal pressure volcanic rock depth section, clear overpressure development scale;Second step: using well logging data, identify overpressure development genesis;Third step: using rock resistivity-density relationship, the contribution of different genesis overpressure is obtained.The method can quantitatively calculate the contribution ratio of different genesis to overpressure formation according to the change amount of the volume properties and the conduction properties of the rock in the overpressure section, reducing the influence of manual intervention, avoiding artificial error or error, so that the prediction method has high quantitative prediction accuracy.

The application discloses a multi-modal volcanic rock fine-grained lithology identification method and system based on temperature scaling probability calibration, and belongs to the cross technical field of artificial intelligence and geophysical exploration. In view of the problems that the feature-level multi-modal fusion method is prone to overfitting, has poor generalization ability under the conditions of geological small samples and low signal-to-noise ratio, and the overconfident output probability of a deep neural network leads to unreliable fusion decision, the application proposes a three-section decision-level framework of 'decoupling-calibration-fusion'. First, an image expert network and a logging expert network are constructed, and independent feature extraction and classification are respectively performed on rock slice images and logging data; second, temperature parameters are respectively fitted on a verification set, and the non-normalized prediction values output by the two expert networks are temperature scaled to convert into calibrated probability distribution; and finally, the probability distribution is weighted and fused with a learnable weight parameter to realize fine-grained lithology identification.

The application provides a microporous rock filter element and a water purifier. The microporous rock filter element is prepared according to the following steps: S1. mixing ore powder, volcanic rock powder, fluxing agent and pore-forming agent to obtain a mixture; the mass ratio of the ore powder, the volcanic rock powder, the fluxing agent and the pore-forming agent is 10-20:60-80:3-10:1-10; the particle size of the ore powder is 400-1000 mesh; the particle size of the volcanic rock powder is 160-200 mesh; S2. calcining the mixture at 700-900 DEG C for 3-5 hours, and then cleaning and drying to obtain the microporous rock filter element. The microporous rock filter element has high strength, stable internal pores, long mineralization life and can stably release multiple trace elements beneficial to human body.

The invention discloses a volcanic rock weathering crust structure division method and device, equipment and a medium, and relates to the technical field of petroleum geological exploration and development, a first indication parameter formula for indicating weathered clay and porosity increase is constructed, and a normalized logging curve, a weathering index and a geological division weathering crust structure correlation relationship are analyzed to obtain a first indication parameter formula; obtaining a first undetermined coefficient, and calculating a first indication parameter; constructing a second indication parameter formula of rock mechanical characteristic change, analyzing a correlation relationship between rock color, rock breaking characteristics, the normalized logging curve, the weathering index and a geological division weathering crust structure to obtain a second undetermined coefficient, and calculating a second indication parameter; and performing weathering crust structure division on the volcanic rock according to the first indication parameter and the second indication parameter to obtain a volcanic rock weathering crust structure division result. According to the method, the volcanic rock weathering crust structure division accuracy can be improved, the volcanic rock weathering crust structure division complexity is reduced, and the volcanic rock weathering crust structure division efficiency is improved.

The application discloses a method for determining the hydrothermal activity age of a volcanic rock reservoir, and relates to the technical field of volcanic rock identification. The method comprises the following steps: obtaining a zircon sample target of the volcanic rock reservoir to be measured; performing laser Raman spectrum testing to obtain Raman spectrum data of the zircon sample target; processing the data to obtain the peak position and half-height width of the vibration peak v3SiO4 of the zircon sample target; fitting the half-height width and the position parameter of the wave peak center of the vibration peak v3SiO4 to determine the morphological characteristics and composition of the inclusion in the zircon; performing isotopic proportion and trace element composition analysis to determine the formation age of the zircon; and constructing a half-height width-time fitting curve to determine the formation period of the hydrothermal mineral coexisting with the zircon. The method can be used to divide the zircon period of the volcanic lava, and has a good determination on the zircon genesis, thereby providing an important identification basis for the late hydrothermal / tectonic action events and time of the volcanic rock reservoir.

The invention provides a method and a system for recovering the original morphology of a volcano institution. The method comprises the following steps: acquiring multi-source data to construct a horizon framework model of the volcano institution; processing the measured logging data to obtain an initial velocity curve, performing time-depth conversion based on the initial velocity curve, and performing primary correction on the horizon framework model of the volcano institution; a fluid overpressure reduction factor is introduced into the layer framework model of the volcanic institution after the primary correction, decompaction correction is carried out, then fault displacement elimination is carried out, and a layer framework model of the volcanic institution after the secondary correction is obtained; and carrying out denudation amount recovery and layer leveling treatment on the secondarily corrected horizon framework model of the volcanic institution to obtain a final horizon framework model of the volcanic institution. According to the method and the system for recovering the original morphology of the volcanic institution, objectivity, quantification and precision of a recovery result are remarkably improved, and a reliable geologic model is provided for volcanic rock oil and gas reservoir exploration, basin paleoenvironment recovery and the like.

The application discloses a method for calculating the saturation of volcanic rocks by considering altered clay, which is based on natural volcanic plug rock electrical data and whole rock analysis measurement data, and applies the Simandoux model to evaluate the conductive contribution of altered clay minerals, so that a saturation model more suitable for altered volcanic rocks is obtained. The formation conductivity calculated by the new altered volcanic rock saturation model is consistent with the real measurement data, and when applied in a well, more reliable saturation evaluation results of the altered volcanic rocks are obtained. The model experiment effect is good, and the model is more suitable for the study of the rock conductivity of volcanic rocks.

This invention relates to the technical field of experimental apparatus for the sealing performance of volcanic rocks and shale, specifically a comparative experimental apparatus for evaluating the sealing performance of volcanic rocks and shale. The apparatus includes a simulation device comprising a base, a mounting frame, a pump mechanism, and a sample holder. The pump mechanism is mounted on the upper side of the base, and the sample holder is mounted on the upper side of the mounting frame. The sample holder includes a storage tank and an inner partition. An end cap is mounted on the left side of the storage tank, and an oil injection pipe is coaxially fixed to the end cap, connecting to the pump mechanism. An external liquid pipe is connected to the right side of the storage tank. An inner partition is mounted on the inner left side of the storage tank, dividing it into two storage chambers. This invention has a reasonable and compact structure and is easy to use. It provides ground pressure simulation to volcanic rock or shale samples through a squeezing device, adjusting the size of the pores for sample transport. The high-pressure pump mechanism then pumps the sample through an external partition into the corresponding pores of the volcanic rock or shale sample to determine the sealing performance of the cracks.

The invention discloses a volume fracturing method for a deep volcanic rock reservoir. According to the method, natural cracks of acid-soluble minerals such as calcite are etched through acid injection, uneven rough surfaces are formed, the self-supporting flow conductivity of the cracks is improved, meanwhile, the wall surface bending degree is reduced, and conditions are created for long-distance supporting of a crack network; an in-crack temporary plugging steering process is applied, meanwhile, a pump is stopped in the fracturing process, a ground stress field is reconstructed, the original two-direction stress difference is reduced, and a foundation is provided for crack complication; a high-viscosity slug is injected, the displacement is accurately increased when high-viscosity liquid reaches a shot hole, the net pressure of the crack is instantly increased, and expansion of the width of the crack and extension of the length of the crack are achieved. According to the volume fracturing method, through the design and combination of the acid liquor, the sand ratio and the viscosity of the sand-carrying fluid, the fracture height expansion is inhibited, the fracture complexity is improved, and the far-end support of the artificial fracture is realized, so that the effective development of the deep volcanic rock reservoir is realized.