8 results about "Ordovician" patented technology

This invention provides a method for expanding the functionality of directional boreholes for grouting in Ordos limestone aquifers. The method includes acquiring and analyzing mine hydrogeological data, determining the lithological structure characteristics, sedimentary characteristics, geological structural distribution parameters, and hydrogeological parameters of the coal seam floor, constructing a stratigraphic structure model, analyzing the hydrogeological parameters based on the stratigraphic structure model to determine the treatment strata in the Ordos limestone aquifer, analyzing the geological structural distribution parameters based on the stratigraphic structure model to determine the trajectory design parameters for the directional borehole, determining the function of the directional borehole according to the project objective and pre-defined directional borehole function classification information, and designing the directional borehole corresponding to the treatment strata and / or the borehole trajectory design parameters. This method refines the functional classification of directional boreholes, provides design methods for directional boreholes with different functions, expands the functionality of directional boreholes, and makes the surface area treatment technology for Ordos limestone water hazards more comprehensive, applicable, and targeted.

The application relates to a precision prevention and control device for directional drilling governance Ordovician limestone water, and relates to the technical field of coal mine water prevention and control. The device comprises a directional drilling mechanism for multi-angle drilling, a trajectory monitoring mechanism for real-time monitoring and correction of drilling trajectory, and a probe-drilling-irrigation-monitoring-collaboration mechanism for realizing drilling group grouting process and linkage grouting. The trajectory monitoring mechanism and the probe-drilling-irrigation-monitoring-collaboration mechanism are arranged in the directional drilling mechanism. The directional drilling mechanism can realize multi-angle drilling, reduce the governance blind area, expand the governance range, improve the governance effect and does not affect the mining connection. The trajectory monitoring mechanism can realize real-time monitoring and correction of the drilling trajectory, and ensure the accuracy of the drilling direction. The probe-drilling-irrigation-monitoring-collaboration mechanism can realize drilling group grouting process and linkage grouting, and accurately governs Ordovician limestone water.

The invention relates to a directional drilling track profile map drawing method and device, electronic equipment and a storage medium, in particular to the field of geophysical exploration technology and coal mine water control, and the method comprises the steps that firstly, drilling monitoring data of an actual drilling track in an Ordovician aquifer are obtained based on a drilling orientation instrument, and a drilling orientation instrument is established based on the drilling monitoring data; directional well design analysis software is utilized to obtain drilling control parameters corresponding to any measuring point in the actual drilling track; determining a section line corresponding to the actual drilling track according to the drilling design starting point and the drilling design end point corresponding to the actual drilling track; determining the projection length of any measuring point on the section line in the actual drilling track by using a vector projection method; and finally, drawing a profile map corresponding to the actual drilling track based on the projection length of any measuring point on the profile line and the vertical depth of any measuring point. Profile projection analysis of the actual drilling track of directional drilling can be achieved, the drawing efficiency is effectively improved, and it is guaranteed that the actual drilling position is at the designed target layer.

The invention provides a mine Ordovician limestone water pressure and top interface crack detection method based on a micro-seismic technology. The method comprises the following steps: collecting actual micro-seismic data; de-noising processing is carried out on the collected actual micro-seismic data by using a wavelet threshold de-noising algorithm; a P-S wave combined positioning algorithm based on P wave and S wave first arrival is adopted to position the denoised micro-seismic event; seismic source parameter calculation and seismic source mechanism inversion are carried out based on the positioned micro-seismic event waveform and the initial polarity; ground stress inversion work is carried out, and the change condition of Ordovician limestone water pressure is deduced; calculating advanced attributes representing stratum stress or fracture characteristics on the basis of micro-seismic event source parameters, determining an advanced attribute threshold range causing Ordovician limestone water damage, and judging possible crack conditions; the Ordovician limestone top crack condition and Ordovician limestone water pressure are comprehensively analyzed, and whether the risk that Ordovician limestone water protrudes along the crack exists or not is judged. The method can monitor the water pressure change of the Ordovician limestone in real time, accurately detect the water flowing fracture of the Ordovician limestone top interface, and provide a scientific basis for mine water disaster prevention and control.

The invention relates to the technical field of seismic interpretation processing, and particularly discloses a strong reflection layer separation method and device based on amplitude trend correction, and the method comprises the steps: carrying out the matching pursuit strong reflection recognition of an original seismic data volume, and obtaining a matching wavelet; correcting the separation coefficient by matching the amplitude and amplitude trend characteristics of the wavelets; based on the corrected separation coefficient, carrying out strong reflection layer separation to obtain a strong reflection separation data volume; and based on the strong reflection separation data body, carrying out corresponding reservoir feature analysis and research. According to the method, the separation coefficient is corrected and strong reflection separation is carried out by utilizing the matched wavelet amplitude and the amplitude trend, the weak reflection signal is enhanced, the reservoir identification precision is improved, the strong reflection separation precision is improved, so that the weak reflection characteristic is more prominent, the T74 strong reflection event can be well separated in the Ordovician carbonate reservoir prediction in the Tarim Basin, and the prediction accuracy is improved. The reflection characteristics of the underlying small-scale fracture-cavity body are better reserved and highlighted, and the effect is obviously superior to that of a conventional method.

The invention discloses a filling material based on Ordovician limestone water and CO2 synergistically modified red mud and an application method. The method comprises the steps that coal seam strip mining is designed and implemented to construct an underground water storage reservoir; constructing a drainage drill hole group, safely draining Ordovician limestone water to a reservoir, and creating a safety condition for underlying bauxite mining; the bauxite is mined, and red mud and CO2 generated in Bayer process production of the bauxite are collected; ordovician limestone water in a reservoir is used as a medium and a calcium and magnesium ion source to cooperate with red mud, fly ash and CO2, and the high-performance filling material is prepared through a pressurized carbonation reaction; filling and supporting bauxite and a coal seam goaf by using the material; and finally recharging the residual Ordovician limestone water. According to the method disclosed by the invention, collaborative recycling of four wastes, namely the Ordovician limestone water, the red mud, the fly ash and CO2 is realized, an integrated green mining technical system of'water draining and pressure reducing-stored water utilization-solid waste gelatinization-goaf filling-residual water recharging 'is formed, and the method has comprehensive benefits of safety, environmental protection and economy.

The application relates to the field of mine water disaster prevention, and provides a method for identifying the fault position of Ordovician limestone karst stratum, wherein the method comprises the following steps: arranging a plurality of secondary fault exploration branch holes on the main horizontal branch hole track at intervals; arranging an upper exploration branch hole on the upper part of the secondary fault exploration branch hole; obtaining the carbonate content in the backflow cuttings, the while-drilling gamma and the drilling time data in the drilling process of the secondary fault exploration branch hole and the upper exploration branch hole to identify the fault position information. The method can solve the defects of indirectness and inaccuracy in the fault exploration in the prior art, the method can realize multi-element comprehensive identification of the fault position through horizontal and vertical directional drilling control, and the identification accuracy of the fault position is effectively improved through the carbonate content detection of the backflow cuttings, the while-drilling gamma and the drilling time comprehensive identification of the lithology.

The invention belongs to the technical field of petroleum geological exploration, and discloses an igneous rock high-precision speed modeling method and related equipment, and the method comprises the steps: building a lithofacies-seismic facies chart; constructing a seismic facies prediction model based on the lithofacies-seismic facies chart, and generating an igneous rock lithofacies prediction body through the seismic facies prediction model; establishing an igneous rock low-frequency model by taking the igneous rock facies predictor as a constraint; carrying out post-stack sparse pulse inversion through the igneous rock low-frequency model to obtain a longitudinal wave impedance attribute body, and converting the longitudinal wave impedance attribute body into a longitudinal wave velocity body, namely an igneous rock velocity body; and fusing the igneous rock velocity body with the velocity of the non-igneous rock development area to obtain an igneous rock high-precision velocity model. According to the method, the Ordovician fracture and fracture-cavity reservoir identification capability is obviously improved, and effective data support can be provided for well location argumentation and development schemes.