3 results about "Distribution law" patented technology

The invention provides a wellbore scale upgrading method and system based on acid gas reservoir meter-level well section numerical simulation, and the method comprises the steps: building an apparent phase slippage speed calculation model and a wellbore wall surface friction calculation model through recognizing a multiphase fluid flow state mode; and finally, determining the mathematical relationship among the fluid flow state, the interphase slippage speed, the shaft wall friction, the temperature, the pressure and the liquid holdup, and embedding the meter-scale operation model into the macroscopic shaft model to realize the multi-scale accurate fluid flow simulation of the acid gas reservoir shaft. According to the scheme, the problems that in the prior art, factors are not considered comprehensively, and calculation accuracy is insufficient are solved, a full-wellbore numerical simulation control system considering fluid characteristics of the acid gas reservoir is established, meter-scale gas-liquid flow and distribution rules of the sulfur-containing gas reservoir can be accurately described, and calculation accuracy is improved. And shaft macroscopic parameter indexes suitable for gas reservoir development are reliably calculated, and theoretical support is provided for economic and efficient development of acid gas reservoirs.

The method and system for analyzing the risk of CO2 pressure relief wellhead valve freezing blockage belong to the technical field of numerical simulation modeling. The existing research on the distribution law of the internal related physical field of the pressure relief valve and pipeline during the dense phase CO2 release process is relatively less, which cannot optimize the structure of the wellhead valve, resulting in frequent freezing blockage. Method: A 1 / 2 3-D wellhead gate valve model is built, and the flow basin is extracted, the grid is divided, and the solver is set. The CO2 physical properties of the set 1 / 2 3-D wellhead gate valve model are set, and the model is verified to obtain a CO2 freezing risk numerical simulation model. The CO2 freezing risk numerical simulation model is calculated by CFD simulation for two kinds of opening degrees, and the valve freezing risk is analyzed according to the calculation results, so as to optimize the structure of the valve. The present application is suitable for the research on the distribution law of the internal related physical field of the pressure relief valve and pipeline during the dense phase CO2 release process.

The application discloses a kind of TA1 ingot element distribution characteristic analytical method, belong to titanium alloy smelting technical field.The application is to TA1 titanium ingot slice, through carbon sulfur analyzer, oxygen nitrogen hydrogen analyzer, inductively coupled plasma emission spectrometry accurately determine the concentration of C, N, O, Fe in 16 characteristic detection points, reveal the macroscopic distribution law and segregation difference of element in ingot longitudinal, transverse;Rely on ANSYS Fluent, through C language combination specific macro of Fluent and write UDF to realize the redistribution of solute and heat solute buoyancy, and construct multi-physics field coupling model by combining key parameters, simulate the segregation evolution law of element in TA1 ingot solidification process, ascertain the influence mechanism of solute redistribution coefficient on element distribution, quantitatively analyze the element migration and enrichment behavior in solidification process.The application can systematically reveal the distribution characteristics and segregation cause of key elements in TA1 ingot, provide theoretical support for electron beam cold bed furnace smelting process optimization, effectively solve the problem of TA1 ingot composition uneven.