从一个布井失败案例探讨多种地球物理方法结合的重要性

发布时间：2018-03-13 19:19

本文选题：高密度电阻率法　切入点：磁共振探测　出处：《水文地质工程地质》2017年01期 　论文类型：期刊论文

【摘要】：为探讨多种地球物理方法结合的重要性,以一个应用地球物理方法布井失败案例为研究对象,通过比较高密度电阻率法、磁共振探测以及两种方法结合的探测结果与实际钻探资料的差异,分析了每种方法的优缺点,并借助经济成本计算,讨论了多种方法结合的可行性。结果表明:高密度电阻率法与磁共振探测各有优缺点。高密度电阻率法可很好地判断地层结构的整体变化,但对岩性的推断具有较强的不确定性。磁共振探测推断的地层岩性与钻孔资料基本吻合,但无法判断是否有断层或裂隙带存在。高密度电阻率法与磁共振探测结合推断的剖面尺度上地层岩性和厚度变化与钻孔资料基本一致,是揭示地层岩性及含水层位置的有效方法,说明应重视多种方法结合的研究及应用。相比不采用任何地球物理方法或单一方法,两种方法结合的费用更低,在实际应用中具有可行性。
[Abstract]:In order to discuss the importance of the combination of various geophysical methods, a case of well layout failure using geophysical method was studied, and the method of high density resistivity was compared. In this paper, the advantages and disadvantages of the magnetic resonance detection and the difference between the results of the two methods and the actual drilling data are analyzed, and the economic cost calculation is used to calculate the advantages and disadvantages of each method. The feasibility of combining various methods is discussed. The results show that the high density resistivity method and the magnetic resonance detection method each have advantages and disadvantages. The high density resistivity method can well judge the overall changes of the formation structure. However, there is a strong uncertainty in the inference of lithology. The stratigraphic lithology inferred by magnetic resonance is basically consistent with the borehole data. But it is impossible to judge whether there are faults or fissures. The variation of stratigraphic lithology and thickness on the section scale inferred by high density resistivity method combined with magnetic resonance detection is basically consistent with the borehole data. Is an effective method for revealing the lithology of the strata and the location of the aquifer, indicating that the research and application of a combination of multiple methods should be emphasized. The cost of combining the two methods is lower than that of not using any geophysical method or a single method, It is feasible in practical application.
【作者单位】：水利部牧区水利科学研究所;
【基金】：国家自然科学基金(41402224) 中国水利水电科学研究院科研专项(MK2015J01)
【分类号】：P631

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