齐家潜山北段中生界火山岩风化壳特征及分布预测

doi:10.3969/j.issn.1672-9803.2020.02.020

摘要/Abstract

摘要： 齐家潜山北段中生界发育中性和酸性两类火山岩,受燕山运动抬升遭受剥蚀、风化淋蚀作用形成风化壳。为落实该区风化壳的分布,利用岩心、元素录井、测井等资料进行了综合研究,建立了测井曲线识别风化壳的图板,进而对单井进行风化壳识别,并在识别单井风化壳的基础上,应用波阻抗反演方法预测风化壳的分布。应用结果表明,风化壳形成受构造和断裂控制,分布于构造高部位、缓坡带和断裂发育处。利用该方法成功预测出该区风化壳分布范围,为该区下一步的勘探和开发提供了依据。

关键词: 中生界潜山, 火山岩, 风化壳, 波阻抗反演

Abstract: In the Mesozoic of northern section of Qijia buried hill, there are two kinds of volcanic rocks, intermediate and acid, which are denuded, weathered and leached by the uplift of Yanshan movement and formed weathering crust. In order to make sure the distribution of weathering crust in this area, the data of core, element logging and well logging were studied comprehensively, a chart for identifying weathering crust by well log was established, then the weathering crust of a single well was identified. The distribution of weathering crust was predicted by wave impedance inversion method based on single well weathering crust.The results show that the formation of weathering crust is controlled by structure and fault, and it is distributed in the high part of the structure, gentle slope zone and the developed part of the faults.The distribution range of weathering crust in this area is predicted successfully by this method, which provides a basis for further exploration and development of this area

Key words: Mesozoic buried hill, volcanic rock, weathering crust, wave impedance inversion

中图分类号:

TE132.1

陈启南. 齐家潜山北段中生界火山岩风化壳特征及分布预测[J]. 录井工程, 2020, 31(2): 113-117.

CHEN Qinan. Characteristics and distribution prediction of Mesozoic volcanic weathering crust in the northern section of Qijia buried hill[J]. Mud Logging Engineering, 2020, 31(2): 113-117.

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