10 results about "Mass balance" patented technology

The invention provides a prior information constraint-based Antarctic ice cover material balance inversion method and device, and the method comprises the steps: obtaining satellite height measurement data, and extracting an elevation parameter of an Antarctic ice cover region; preprocessing the gravity satellite data; performing inversion material balance of physical priori constraint, including dividing the Antarctic ice cover into Mascon units which are geographically aligned with the ice flow basin, constructing a regularization constraint matrix of space differentiation based on elevation variation variance of satellite altimetry data, dynamically optimizing regularization parameters in combination with generalized cross validation criterion, and solving mass change; and outputting the Antarctic ice cover material balance result. According to the method, regularization is carried out by using the uncertainty difference of the quantized area of the height measurement data, so that the inversion precision and the spatial resolution are remarkably improved, and GIA model errors and data noise interference are effectively inhibited.

The invention discloses a method for analyzing the gold occurrence state of a dump leaching sample, and relates to the technical field of mineral processing and process mineralogy analysis. According to the analysis method, through the steps of sample preparation, gold grade calculation and representativeness verification, size grading and enrichment, stepped chemical leaching diagnosis, roasting dissociation and secondary leaching diagnosis, reselection enrichment and precise analysis, occurrence state calculation and the like, the means of reselection, leaching, roasting and the like are systematically combined with a mass balance mathematical model; accurate quantitative analysis of four critical occurrence states of coarse grain gold, leachable gold, wrapped gold and adsorbed gold in the heap leaching process is realized initiatively. The industrial problem that different occurrence states cannot be accurately quantified through a traditional method is solved, and direct and reliable data support is provided for accurate optimization and recovery rate improvement of the dump leaching process.

This invention discloses a method and equipment for evaluating tight reservoir gas well parameters based on stress sensitivity, including: acquiring actual production data of the gas well; determining the reservoir stress sensitivity coefficient; obtaining a normalized production-mass balance pseudo-time curve, a normalized production integral-mass balance pseudo-time curve, and a normalized production integral derivative-mass balance pseudo-time curve considering stress sensitivity; fitting the above three curves to a typical curve chart for production instability analysis to determine the time shift, production shift, and position number; obtaining the dynamic reserves of the first gas well and the second gas well; using the average of the dynamic reserves of the first and second gas wells as the dynamic reserves of the gas well under the mutual constraint of the flow mass balance method and the chart fitting method; and calculating reservoir parameters and fracture parameters. This invention enables accurate evaluation of parameters such as dynamic reserves of gas wells in low-permeability tight gas reservoirs, and can conveniently, quickly, accurately, and effectively evaluate gas well parameters and reservoir parameters.

The application discloses a method for quantitatively analyzing mercury in different occurrence states in sedimentary rocks, belongs to the technical field of geological rock analysis, extracts kerogen from whole rock, respectively determines the mercury content and the organic carbon content of the whole rock and the kerogen, then carries out high-temperature thermal desorption analysis on equal quality of the two, obtains a thermal desorption curve, divides the release stages of different mercury occurrence states according to the thermal desorption curve, and calculates the content and proportion of mercury in each stage, and finally combines the total mercury content of the whole rock, the mercury content of the kerogen and the mass ratio, and obtains the inorganic mercury content through mass balance calculation. The method divides mercury into organic matter combined state (in kerogen) and inorganic combined state through physical separation and high-temperature pyrolysis, overcomes the multi-solution problem of traditional correlation fitting, significantly improves the accuracy and reliability of mercury as a volcanic activity tracer, and verifies the experimental data through mass balance calculation, avoiding the misjudgment of a single fitting method.

The invention discloses a coalbed methane original geological reserve evaluation method considering fracturing fluid injection and flowback, which comprises the following steps of: calculating an apparent pressure correction coefficient according to reservoir physical property parameters, fluid physical property parameters, average coal reservoir pressure under a plurality of production dates and an average gas deviation coefficient; and correcting the apparent average coal reservoir pressure according to the apparent pressure correction coefficient to obtain the corrected apparent average coal reservoir pressure, according to the reservoir physical property parameters, the fluid physical property parameters, the injection rate and the return displacement of the fracturing fluid, and the average coal reservoir pressure, the accumulated gas production rate, the accumulated water production rate and the average gas deviation coefficient under a plurality of production dates, the equivalent accumulated gas production rate is determined; a prediction fitting model is established according to the equivalent cumulative gas production rate and the corrected apparent average coal reservoir pressure on the basis of the material balance principle, the original geological reserves of the coal bed gas are determined, cyclic iteration is not needed, the influence of fracturing fluid injection and flowback is considered, the calculation efficiency is improved, the calculation precision is also improved, and large-scale application and popularization are facilitated.

The invention discloses a method for quantifying the leakage amount of pipeline sewage to underground water. The method comprises the following steps: arranging a monitoring well near a pipeline; collecting the tracer agent concentration of the background water sample; and a mass balance model is constructed, and the mass balance model calculates the tracer agent reserve change value, the tracer agent input flux and the sewage leakage amount based on the tracer agent concentration measured by each monitoring well. The invention further discloses a device for quantifying the leakage amount of the pipeline sewage to the underground water. The method can accurately identify and quantify the leakage scale of the pipeline sewage to the underground water. Through cooperative use of the multi-element environment tracer agent, the uncertainty possibly brought by a single tracer agent is greatly reduced, and the capacity of distinguishing a leakage path and spatial and temporal distribution is effectively improved. The method has important application value and wide popularization prospect in the fields of municipal pipe network leakage detection, industrial wastewater discharge monitoring, environmental risk assessment, groundwater pollution remediation and the like.

This invention provides a method for diagnosing condensation degradation in vector thermal analysis. The method includes: performing a thermal analysis reaction on the sample to obtain thermogravimetric data and three-dimensional mass spectrometry data of the gaseous phase; calculating the total mass change of the sample; analyzing the three-dimensional mass spectrometry data using the equivalent characteristic spectrum method to obtain the total mass change of all gaseous components; and determining the classification of condensation degradation based on time correlation coefficients. The classification of condensation degradation includes: condensation tailing defects, condensation drift defects, memory effect defects, and secondary reaction defects. This invention utilizes mass spectrometry in vector thermal analysis to qualitatively and quantitatively analyze the escaping gases during the thermal analysis reaction process. By comparing the mass yield of all gaseous components with the weight loss rate of the solid and liquid phases in the thermal analysis, and using a time correlation and mass balance system, it provides real-time intelligent diagnosis of condensation degradation phenomena and possible types occurring in the escaping gases during detection.

This invention discloses a method for predicting solid phase invasion damage in deep tight oil and gas reservoirs, belonging to the field of oil and gas reservoir development technology. The method includes the following steps: A mathematical model of suspended colloid migration in porous media is established based on the mass balance of suspended and retained particles, the expression for particle capture rate, and Darcy's law; the variables in the mathematical model of suspended colloid migration in porous media are made dimensionless; the above dimensionless mathematical model of suspended colloid migration in porous media is solved to obtain a drilling fluid damage prediction model for tight oil and gas reservoirs; and the damage status of the oil and gas reservoir is determined based on the drilling fluid damage prediction model. This invention provides a basis for the selection of sealing materials for fractured reservoirs, proposes a series of evaluation methods for the performance parameters of sealing materials, and can timely and effectively control leakage problems.

This invention relates to the field of geomathematical geology, and particularly to a mass balance method based on multi-element proportional deviation synergistic analysis. The method includes: S1 data extraction and preprocessing; S2 PD matrix initialization; S3 PD matrix calculation and filling; S4 determination of inactive elements based on proportional deviation analysis; and S5 mass balance calculation, which calculates the migration degree of each element relative to the initial content of the original rock, thereby comprehensively evaluating the activity intensity and migration behavior characteristics of different elements during rock alteration, thus achieving a quantitative assessment of element migration behavior during rock alteration. The mass balance method based on multi-element proportional deviation synergistic analysis provided by this invention does not rely on traditional graphical discrimination methods, can accurately identify inactive elements in the data set, greatly improves computational efficiency and accuracy, and possesses high efficiency and universality. It can effectively perform computational analysis on element depletion states in complex geological environments.

The application discloses an analysis method for gold occurrence state of heap leaching samples, and relates to the technical field of mineral processing and process mineralogy analysis. The analysis method combines gravity separation, leaching, roasting and other means with a mass balance mathematical model through the steps of sample preparation, gold grade calculation and representative verification, particle size grading and enrichment, stepwise chemical leaching diagnosis, roasting dissociation and secondary leaching diagnosis, gravity separation enrichment and accurate analysis, occurrence state calculation and the like, and accurately realizes quantitative analysis of four occurrence states of coarse gold, leachable gold, wrapped gold and adsorbed gold which are crucial in the heap leaching process. The application solves the industry problem that the traditional method cannot accurately quantify different occurrence states, and provides direct and reliable data support for accurate optimization and recovery rate improvement of the heap leaching process.