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The Research On Quantitative Prediction And Estimation Of Oil Geologic Anomaly In A Hydrocarbonic Basin

Posted on:2004-06-19Degree:DoctorType:Dissertation
Country:ChinaCandidate:J TangFull Text:PDF
GTID:1100360092996464Subject:Earth Exploration and Information Technology
Abstract/Summary:PDF Full Text Request
A basic concept of oil geoanomaly is brought forward creatively in this paper. Oil geoanomalies include four types which are sedimentary geoanomaly, tectonic geoanomaly, geochemistry geoanomaly, strata pressure geoanomaly. Their distributing ranges may be separated to four ranks that include region-oil geoanomaly, enclose-oil geoanomaly, minitype-oil geoanomaly, microscope-oil geoanomaly. The method of studying nontraditionally on oil geoanomaly is also summarized.On the basis of the calculating of complexity(C value) and combination entropy(H value)from the numerical method of geoanomaly analysis, logged signals data (spontaneous potential, acoustic slowness, spontaneous gamma ray and electrical resistivity) and seismic data (amplitude, frequency, phase, etc.) are processed after regularization of data obtained from Linqing Basin of Shengli oil field. Many types of geoanomalies obtained from the computation are analyzed so the spacial variation rules of them can be discovered. Then the oil regions can be predicted by this method.In this paper, the basic concept of oil geoanomaly is summarized systematically, and the method of quantitative analysis are realized by computer programs. The area coverage of oil geoanomaly also can be circled by the research of geoanomaly calculating with the data of selected model region and the work region. The causing of oil geoanomaly can be explained. Many new apperceptions can be obtained from the research:1. It's feasible that the theoretical development from geoanomaly to oil geoanomaly.2. Making use of many kind of parameters data including logging, geological, geophysical data in one dimensional, two dimensional or three dimensional, variational boundaries and changed space can be inquired and circled by geoanomaiy quantitative calculating.3. The research of selected model proves that there is a close relationship between the geoanomaly calculated from logging data and an oil reservoir and the geoanomaly is stability.4. There is a close relationship between the geoanomaly calculated from seismic data and an oil reservoir. So the oil geoanomaly can be taken out.5.There are three types of oil anomalies in the formation of the group of Sha he-jie in Dezhou in the Linqing Basin of Shengli oil field, and the area of first type of oil anomaly is similar with other geoanomalies circled by sedimentary and geochemical.The results from the research prove that the concept of oil geoanomaly is creative, and the method is feasible. With practise constantly the new method must be developed and grown up.
Keywords/Search Tags:incurred-mine geologic anomaly, "5P" districts, oil geologic anomaly, logging data, seismic data, complexity, combination entropy, oil prediction, nontraditional oil exploration
PDF Full Text Request
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