Research On The Cross Platform Operating Software System Of Comprehensive Interpretation Based On Gravity And Gravity Gradient Data

With the exploitation of oil, metals and a large amount of waste, energy supply in our country has restricted the social and economic development. Opening up the energy, looking for mineral resources are the main direction of national resource strategy. Deep detection technology and experiment(English abbreviation: SinoProbe), carried out by the state, aims to reveal the deep earth structure, establish deep strategic base of energy and mineral resources. Through a variety of geological prospecting methods and means, and by the collaboration of geological and geophysical domain experts, the geological and geophysical model is set up to complete analysis on the inference and interpretation of detecting object, understand the deep crust structure and material composition and distribution, provide reliable basis for resources exploitation of oil-gas energy and mineral as well as the forecast of geological disasters.In order to improve the accuracy of deep exploration, the research and development of geophysical data processing and interpretation methods are essential. Gravity prospecting as an important branch of geophysical prospecting, by studying the crustal density distribution and cause of the earth’s gravitational field, to infer the underground mineral oil and gas distribution, achieve the goal of resource exploration. Through FTG(Full Tensor Gravity Gradiometry) measuring instruments, we are able to measure all of the second order gradient values of the total gravity field. Because the information contained in each gradient component is not the same, comprehensively considering the information of different component can effectively improve accuracy of the processing and interpretation. The traditional gravity exploration method is to explain the gravity data of the single component. In order to make full use of the advantages brought by the gravity gradient data, the new methods and new technologies should be developed. Gridding interpolation processing is the basis of the gravity and the gravity tensor inversion and interpretation of data, the quality of the interpolation method will directly affect the credibility of the gridded data, which will influence the accuracy of interpretation results. Using the wave number domain transformation technology, this paper proposed a feature weighted enhanced gravity interpolation method according to the information contained in different gravity gradient data, improve the effect of normal gravity interpolation method. Edge detection technology is one of the important tasks in the interpretation of potential field. Using the edge detection technology, we can get a clear understanding of the boundary between the strata and the distribution characteristics of the underground geological bodies. By take advantage of the characteristics of each gradient data, balanced gradients can display the edges more clearly, so they are always used to recognize source edges. In this paper, balanced gradient methods are presented to interpret gravity tensor gradient data, which are the functions based on the ratio of different gradient components, and the maxima of the balanced gradients can recognize the edges of the sources. We also build the linear equation between the balanced gradients and the location parameters, and discuss the solving way about the linear equations to get more accurate results. The application of gravity data for density-interface inversion is a classic topic in gravity prospecting. The underground density interface is often has close relationship with oil storage structure and regional structure, so calculating the fluctuation of the density interface is of great significance in petroleum exploration. Based on the relationship between gravity data and gravity tensor data, we apply gravity tensor data to the traditional Parker-Oldenburg density interface inverse algorithm using transformation techniques in potential field. The experimental results prove that using gravity tensor data can improve the inversion resolution of density interfaces effectively.The software must be used for quality control, data processing and geological interpretation, not only because the acquisition of geophysical data is usually very large, and also due to the complex mathematical operations involved by the processing and interpretation. Aiming at geologic problems in the deep detection process, this paper introduces seismic exploration, magnetotelluric exploration and gravity and magnetic exploration and other geophysical exploration technologies using in the deep exploration, and also introduces the moving measuring platform technology for the wide range of detection. According to the characteristics of deep exploration information and large professional span, the problems encountered in the development of deep exploration program software are analyzed. On deep detection software research and development, SinoProbe adopted the "Red and Blue Armies" development strategy, to build the "processing- explanation- modeling" geoscience integration software platform. Through the introduction of international high-end software platform, "Blue Army" integrates the processing and interpretation techniques required by the deep exploration into the high-end software in a modular plug-way, realizes the cross generation of software development, and research the inter-generational study software development to achieve rapid shortening and shorten the gap with foreign software development technology level. Based on the analysis of secondary development of software architecture two geoscience software platforms, Petrel of Schlumberger and Oasis montaj of Geosoft, introduced by the "Blue Army", we integrate the layered media inversion technology to both platforms, and using it as an example to describes how to interact with gravity and gravity gradient data in both geoscience software platform, providing a solution for quick migration of similar geophysical algorithms. The goal of "Red Army" is to develop an interpretation and analysis software platform applicable to the earth deep detection data with independent intellectual property rights, to establish moving platform data processing and interpretation software system for seismic and non-seismic data, drilling data and other geoscience data with the ability of visualization analysis, get rid of dependence on foreign advanced software. The related software developed by "Red Army" are also introduced in this paper.This paper chooses "Research on the cross platform operating software system of comprehensive interpretation based on gravity and gravity gradient data" as its title. In the research of the algorithm development of geophysical prospecting related technology, we apply the gravity gradient data to the traditional method, improving the precision of the gravity prospecting exploration and explanation. In the research of software development of geophysical processing and interpretation, we integrate the improved Parker-Oldenburg algorithm, which stands for the comprehensive interpretation technology for gravity-magnetic and gradient tensor data, into Schlumberger’s Petrel and Geosoft’s Oasis montaj two geoscience software platforms, studying the interaction realization of the comprehensive interpretation of gravity and gravity gradient data across different platforms From algorithm research based on the gravity gradient data to the interaction realization of the comprehensive interpretation of gravity and gravity gradient data across different platforms, this paper forms a complete set of software development process, has high practical value.