| This article are based on project main research area is located in the west side of Xuefeng mountain area,the area is also conducted some geological survey,the oil and gas exploration and geophysical work,combining previous working experience can be summed up the xuefeng mountain west regional exploration work is mainly restricted by the following factors:(1)Strong tectonic movement,making the underground structure and surface conditions become more complex,deep bedrock exposed,weathering,surface layer strongly erosion is serious.(2)Complex geological conditions limits the choice of exploration technology.(3)As limited funding,exploration drilling results data is less,it is difficult to achieve the desired effect,especially on the quantitative interpretation is limited by the larger.So in the research area alone to carry out a geophysical prospecting work have limitations,consideration should be given to the actual situation,the application of a variety of effective exploration methods,seismic and non-seismic methods,the combination of geophysical exploration combined with geological,geophysical and petroleum geological research,combining can obtain the high quality materials and more accord with the actual geological conditions.In view of the task subject integrated interpretation,we start from the theoretical study,summed up the research to the tectonic history of activity theory as the instruction,on the basis of petrophysical,by means of comprehensive geophysical research,the combination of model parameters and the measured data joint inversion is combined with geophysical profile,combining the qualitative explanation and quantitative interpretation,combined geophysical exploration results and geological results,achieve the purpose of comprehensive geophysical research,namely through the above "four combinations" to achieve the purpose of comprehensive study.Based on rock ore density,resistivity and magnetic susceptibility of three aspects: physical characteristics made a detailed statistical analysis,and combining the actual situation in the study area summarized a set of applicable to the physical nature of the statistical method;On the integrated interpretation mainly verify the feasibility of the research idea and interpretation effect;These two parts constitute the core research content in this paper.In this paper,the physical property data in the study area are classified statistics,comparison and summary of the effect of various statistical methods,choose the most suitable statistical methods of statistical properties,it is concluded that conforms to the physical characteristics of the study area of statistical results,the results of physical property parameters of a variety of methods are inversion calculation,choose the appropriate method for data processing,combining area geology,drilling,seismic data for integrated interpretation of the magnetoelectric geophysical data.At last,by integrated geological,geophysical exploration,oil and gas geological data analysis,divided into favorable oil and gas segment and accumulation.We are in the process of research on statistical analysis of physical property data as the breakthrough point,to integrated interpretation ideas for specific guidance,to promote identified fold,fault,oil and gas trap,for the purpose of the burial and distribution characteristics of the integrated interpretation study,has obtained the good effect,summarized a set of accord with the actual situation of the study area of geological and geophysical comprehensive interpretation,for the subsequent geophysical research provides an important reference,but also promote the progress of the oil and gas exploration in the area.Basically achieved the following knowledge and results:(1)On the basis of petrophysical,by means of comprehensive geophysical research,combined with experimental data and the model parameters,the joint inversion is combined with geophysical profile,the qualitative explanation and quantitative interpretation,the combination of geophysical exploration results combined with geological results,achieved the purpose of the integrated geophysical study,and research in the study area has obtained the good effect,achieve the expected goal.(2)Based on the west side of Xuefeng mountain area geological and geophysical data statistical analysis,systematically summarizes the various strata in the study area density,resistivity and magnetic susceptibility characteristics,combined with the actual situation in the study area is summarized a set of applicable to the physical nature of the statistical method.(3)Combined with the feature of physical properties of the field in the study area,typical structural numerical simulation and analysis,to explain the work in the study area provides an important theoretical basis.At the same time,summarized the geophysical anomaly characteristics of the typical model in the study area,for the system to provide the basis for integrated interpretation study.(4)In gravity,magnetotelluric profiles,on the basis of the inversion results,combining with the forward modeling results and achievements of geological,seismic and drilling data,etc.,to carry on the integrated geophysical interpretation of the measured profile,for geological interpretation results.(5)Combination of enshi block oil and gas geological background,through the integrated interpretation,enshi to lichuan heavy magnetoelectric big section from the favorable zones of oil and gas,provide the basis for oil and gas exploration and deployment in the late. |
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