7 results about "Weathering crust" patented technology

The application discloses a kind of paragenetic metamorphic rock weathering crust weathering alteration index calculation method, comprising: the mass percentage of element of mud logging cuttings is determined;The mass percentage of element is normalized;The mass percentage of element after normalization is converted into oxide molar ratio;According to the change trend of element oxide molar ratio, the relative loss and relative enrichment trend of various elements in paragenetic metamorphic rock weathering crust is judged;According to the trend of element relative loss or enrichment, the easily soluble element and the element easy to remain are determined, and the new paragenetic metamorphic rock weathering crust weathering alteration index calculation formula is fitted;The molar ratio of element oxide is brought into the new calculation formula established, according to the size of the weathering alteration index value calculated, paragenetic metamorphic rock weathering crust is identified, and paragenetic metamorphic rock weathering crust structure is divided.The application provides important technical support for oil and gas basin paragenetic metamorphic rock weathering crust reservoir research.

The application discloses a kind of electrical parameter calculation methods of para-metamorphic rock weathering crust, comprising: reading the conventional logging curve data of the depth corresponding to para-metamorphic rock weathering alteration index;Logging curve data and para-metamorphic rock weathering alteration index data are fitted into linear relationship chart;According to the correlation of the linear relationship chart of fitting, select the logging curve with high sensitivity of para-metamorphic rock weathering crust identification;The logging curve data with high sensitivity of para-metamorphic rock weathering crust identification is normalized;Fitting para-metamorphic rock weathering crust electrical parameter calculation formula;The logging curve data after normalization is brought into formula to calculate and identify para-metamorphic rock weathering crust.The present application is based on the analysis of a large amount of logging curve data, establishes a new electrical parameter calculation model of para-metamorphic rock weathering crust, and proposes a new method for identifying para-metamorphic rock weathering crust.

The present application relates to ion type rare earth ore detection technical field, especially ion type rare earth ore weathering crust resistivity in-situ vertical measurement and detection device, including installation box, the installation box left and right two side walls are provided with a back strap, the installation box top is connected with the installation cover through the positioning assembly, the installation cover bottom is provided with the bottom plate, the installation cover and the bottom plate between setting up detection assembly, the installation cover is provided with the adjusting assembly for adjusting the detection assembly spacing adjustment assembly. The device through the screw rod, hand wheel and the linkage structure of the one slot plate of adjusting assembly, can drive the guide sleeve to drive the electrode probe along the sliding groove flexible translation, realize the equal interval adjustable of electrode spacing, can accurately match the detection demand of different thickness weathering crust, greatly improve the measurement range and environmental adaptability.

The present application relates to the field of petroleum geological exploration, and discloses a buried hill weathered crust reservoir prediction method and system based on seismic reflection intensity difference detection, a medium and equipment, comprising: sequentially performing trace equalization, spherical diffusion correction, multi-stage amplitude-preserving denoising and sparse inversion on post-stack seismic data, and outputting high signal-to-noise ratio, high resolution and amplitude-preserving seismic profiles; based on the seismic profiles, a multi-parameter fusion reflection intensity is obtained, complex seismic traces are extracted through Hilbert transform, amplitude envelope, instantaneous phase gradient and frequency attenuation coefficient are calculated, and the reflection intensity of the target interface is obtained through weighted fusion; based on the reflection intensity of the target interface, the relative intensity ratio and the absolute intensity ratio are calculated, and the reservoir level is calibrated in combination with core data. The present application solves the technical problems of "poor seismic data quality, one-sided reflection intensity characterization and disturbed quantitative indicators" in the existing buried hill weathered crust reservoir analysis, and realizes high-precision reservoir evaluation under post-stack data.

The application discloses a kind of weathering alteration index calculation methods of orthometamorphic weathering crust, comprising: the mass percentage of element of mud logging cuttings is determined;The mass percentage of element is normalized;The mass percentage of element after normalization is converted into the mole ratio of oxide;According to the change trend of element oxide mole ratio, the relative loss and relative enrichment trend of various elements in orthometamorphic weathering crust are judged;According to the trend of element relative loss or enrichment, the easily soluble element and the element easy to remain are determined, and the calculation formula of new orthometamorphic weathering crust weathering alteration index is fitted;The mole ratio of element oxide is brought into the new calculation formula established, and according to the size of the weathering alteration index value calculated, orthometamorphic weathering crust is identified, and the structure of orthometamorphic weathering crust is divided.The present application provides important technical support for oil and gas basin orthometamorphic weathering crust reservoir research.

The application provides a weathered crust-interior structure integrated prediction method for metamorphic buried hill reservoirs. The weathered crust-interior structure integrated prediction method for metamorphic buried hill reservoirs comprises the following steps: S1, reservoir geological feature analysis and structure division; S2, reservoir parameter prediction based on prestack simultaneous inversion; S3, single-unit multi-attribute fusion fracture modeling; S4, ground stress modeling and fracture effectiveness evaluation; and S5, reservoir comprehensive quantitative evaluation and favorable area prediction. The weathered crust-interior structure integrated prediction method for metamorphic buried hill reservoirs has the advantages of being capable of integrating multidisciplinary information and realizing integrated characterization and quantitative prediction of weathered crust and interior reservoirs.

The application discloses a kind of electrical parameter calculation methods of orthometamorphic rock weathering crust, comprising: reading the conventional logging curve data of the depth corresponding to orthometamorphic rock weathering alteration index;Logging curve data and orthometamorphic rock weathering alteration index data are fitted into linear relationship chart;According to the correlation of the linear relationship chart of fitting, select the logging curve with high sensitivity of orthometamorphic rock weathering crust identification;The logging curve data with high sensitivity of orthometamorphic rock weathering crust identification is normalized;Fitting orthometamorphic rock weathering crust electrical parameter calculation formula;The logging curve data after normalization is brought into orthometamorphic rock weathering crust electrical parameter calculation formula.The present application is based on the analysis of a large amount of logging curve data, establishes a new orthometamorphic rock weathering crust electrical parameter calculation model, and proposes a new method for identifying orthometamorphic rock weathering crust.