| 摘要: |
| 山前带地表复杂导致地震资料品质差,构造复杂导致存在地震波难以到达的区域,成像困难,仅靠地震建立构造模型可靠性低、多解性强。提出一种山前带重磁电震综合构造建模方法,将重磁电资料应用于整个构造建模过程,充分利用重磁电资料减少构造解释多解性,提高构造模型准确性。结果表明:该方法以重磁电震多参数同步联合反演为核心,提高偏移速度模型精度,并改善了成像质量。利用该方法在准噶尔盆地哈山地区构造建模,构造模型准确合理,比仅靠地震资料建立山前带构造模型的方法具有更高的精度和可靠性。 |
| 关键词: 重力勘探 重磁电震联合反演 构造建模 地震资料解释 山前带 |
| DOI：10.3969/j.issn.1673-5005.2017.03.008 |
| 分类号::P 631.3 |
| 文献标识码:A |
| 基金项目:国家科技重大专项(2016ZX05002-006-004) |
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| Application of gravity, magnetic, electric and seismic comprehensive geologic modeling method for piedmont zone of Hala 'alate mountain in Junggar Basin |
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CHEN Xueguo1,2, XIANG Peng2
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(1.College of Marine Geosciences, Ocean University of China ,Qingdao 266003, China;2.West Branch of Research Institute of Exploration & Development of Shengli Oilfield, SINOPEC, Dongying 257000, China)
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| Abstract: |
| Complex terrain of piedmont zone results in low-quality seismic data, and complex subsurface structure of piedmont zone leads to hard-to-image areas where seismic wave can 't propagate. Therefore, the structural model constrained seismically only usually has low reliability and strong non-uniqueness problems. This paper proposes a comprehensive joint gravity, magnetic, electric and seismic modeling method suitable for piedmont zone. Information from gravity, magnetic, electric and seismic data is fully used in each step of modeling, which reduces the non-uniqueness problem and improves the reliability of tectonic model. The results show that the core of this method is to simultaneously joint invert gravity, magnetic, electric and seismic parameters, which improves the accuracy of velocity model and results in a higher quality of seismic image. This method was applied to the Hala alate mountain area. The structural model is verified using drill cores. The proposed method is more accurate and reliable than methods only using seismic data to build model of piedmont zone. |
| Key words: gravity survey gravity, magnetic, electric and seismic joint inversion structure modeling seismic data interpretation piedmont zone |
