| 卢 浩.辽河坳陷粗面岩地球物理响应特征及预测技术研究[J].地质与勘探,2018,54(1):130-137 |
| 辽河坳陷粗面岩地球物理响应特征及预测技术研究 |
| Geophysical response characteristics and prediction technology of the trachyte in the Liaohe depression |
| 投稿时间：2016-12-29 修订日期：2017-12-13 |
| DOI：10.12134/j.dzykt.2018.01.014 |
| 中文关键词: 辽河坳陷 粗面岩 正演模拟 多参数岩性反演 波阻抗反演 地震属性分析 频谱分解 |
| 英文关键词: Liaohe depression, trachyte, forward modelling, multiparameter lithology inversion, acoustic impedance inversion, seismic attributes analysis, frequency spectrum decomposition |
| 基金项目:国家自然科学基金“高煤级煤层气储层应力敏感性及控制机理”（41172145）、中国石油天然气股份有限公司科技专项“辽河油田原油千万吨持续稳产关键技术研究”（2012E-3001）联合资助 |
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| 中文摘要: |
| 辽河坳陷欧利坨子地区发育大规模、巨厚层状粗面岩，并赋存了大量油气资源。但由于粗面岩岩石物理性质特殊，分布规律性较差，目前尚未形成一套具有针对性的预测技术，制约着粗面岩油藏的进一步勘探和开发。为此，在对粗面岩进行岩石物理分析以及正演模拟的基础上，提出了综合应用地震技术预测粗面岩分布的方法。研究成果表明：①研究区粗面岩表现为低时差、高密度、高自然伽马的测井响应特征以及低频、强振幅的地震响应特征；②联合多参数岩性反演和纵波阻抗反演可以实现粗面岩分布的预测；③平均反射强度和平均波峰振幅对于粗面岩引起的反射异常较为敏感，有利于准确刻画粗面岩分布范围；④根据粗面岩分布区的低频特征，21Hz的振幅调谐体频率切片可以有效识别粗面岩体。 |
| 英文摘要: |
| The Oulituozi area in the Liaohe depression hosts abundant hydrocarbon resources in long-scale thick trachyte. Due to the particular geophysical properties and irregular distribution of this rock, there is not a set of targeted prediction technology, restricting the future exploration and development of trachyte reservoirs. To solve this problem, we propose a method by using seismic technologies to predict trachyte based on petrophysical analysis and forward modelling. Our work shows that ①the trachyte is characterized by low acoustic moveout, high density, high natural gamma, low frequency, and high amplitude in seismic response. ②Joint multi-parameter lithology inversion and impedance inversion can predict the distribution of trachyte. ③The average reflection strength and average peak amplitude can highlight the anomalies caused by the trachyte, permitting to accurately depict the distribution of trachyte. ④Trachyte distribution has the same low frequency domain feature, which can be identified by the frequency slices of tunning cube of 21Hz. |
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