| 基于地震波形指示反演的陷落柱识别方法及应用 |
| |
| 引用本文： | 万照飞,郭增虎,王鹏,唐美珍,韩天宝,刘良琼.基于地震波形指示反演的陷落柱识别方法及应用[J].煤田地质与勘探,2020,48(4):212-218. |
| |
| 作者姓名： | 万照飞 郭增虎 王鹏 唐美珍 韩天宝 刘良琼 |
| |
| 作者单位： | 中国石油东方地球物理公司研究院地质研究中心,河北涿州072750;中国石油东方地球物理公司研究院地质研究中心,河北涿州072750;中国石油东方地球物理公司研究院地质研究中心,河北涿州072750;中国石油东方地球物理公司研究院地质研究中心,河北涿州072750;中国石油东方地球物理公司研究院地质研究中心,河北涿州072750;中国石油东方地球物理公司研究院地质研究中心,河北涿州072750 |
| |
| 基金项目： | 中国石油天然气股份有限公司重大科技项目 |
| |
| 摘 要： | 在煤层气勘探开发中,陷落柱是制约煤层气勘探成效的重要因素之一,因此,有效识别陷落柱对提高煤层气勘探成效具有重要意义。以往识别方法都是基于三维地震数据利用陷落柱这一构造引起的地震反射同相轴的非连续性进行识别,本次将陷落柱作为一种地质异常体,利用地震波形指示反演的方法对其进行识别预测。通过测井资料分析和地质建模正演,分析得出煤层中陷落柱发育位置地震波形的3种地球物理响应特征:纵波阻抗值高、地震波形变化和振幅减弱。从地震波形指示反演的基本原理入手,明确该反演方法能够利用陷落柱上述3个响应特征对其进行有效识别。以沁水盆地樊庄区块为例,用该方法对陷落柱识别进行试验,识别结果与钻井含气性及水文地质背景相吻合。结果表明波形指示反演法对陷落柱能够达到有效识别,该方法是识别陷落柱的一种有效手段。
|
| 关 键 词： | 地震波形 波阻抗反演 陷落柱 振幅属性 |
| 收稿时间： | 2019-12-15 |
Collapse column identification method based on seismic waveform indication inversion and its application |
| |
| WAN Zhaofei,GUO Zenghu,WANG Peng,TANG Meizhen,HAN Tianbao,LIU Liangqiong.Collapse column identification method based on seismic waveform indication inversion and its application[J].Coal Geology & Exploration,2020,48(4):212-218. |
| |
| Authors: | WAN Zhaofei GUO Zenghu WANG Peng TANG Meizhen HAN Tianbao LIU Liangqiong |
| |
| Institution: | (BGP Geological Research,CNPC,Zhuozhou 072750,China) |
| |
| Abstract: | During the CBM exploration and development, the collapse column is one of the important factors restricting the exploration effectiveness of coalbed methane. Therefore, the effective identification of collapse column is of great significance for the improvement of CBM exploration. The previous identification methods are based on the discontinuity of the in-phase axis of seismic reflection caused by collapse column. In this paper, the collapse column is innovatively regarded as a kind of geological anomaly, and the identification and prediction of the collapse column are attempted by means of waveform indication inversion. Firstly, through the analysis of logging data and geological modeling and forward modeling, various geophysical response characteristics of the collapse column development position in coal seam are identified:high p-wave impedance value, seismic waveform change and weakened amplitude. Secondly, starting from the basic principle of waveform indication inversion, it is clear that the inversion method can effectively identify the collapse column with the above three response characteristics. Finally, this paper took the Fanzhuang block of Qinshui basin as an example, this method was used to test the identification of collapse column. The identification results are consistent with the gas-bearing property and the hydrogeological background of boreholes, indicating that the inversion technology can effectively identify the collapse column and is an effective means to identify the collapse column. |
| |
| Keywords: | seismic waveform wave impedance inversion collapse column amplitude attribute |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《煤田地质与勘探》浏览原始摘要信息 |
| 点击此处可从《煤田地质与勘探》下载免费的PDF全文 |
|
