基于模型约束的Kirchhoff积分法叠前深度成像

doi:10.13278/j.cnki.jjuese.20170244

吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (2): 379-383.doi: 10.13278/j.cnki.jjuese.20170244

• 地球物理数据处理与解释技术 • 上一篇下一篇

基于模型约束的Kirchhoff积分法叠前深度成像

单刚义, 韩立国, 张丽华

吉林大学地球探测科学与技术学院, 长春 130026

收稿日期:2017-09-29 出版日期:2018-03-26 发布日期:2018-03-26
通讯作者: 张丽华(1974-),女,高级工程师,博士,主要从事测井技术方法研究,E-mail:zhanglh@jlu.edu.cn E-mail:zhanglh@jlu.edu.cn
作者简介:单刚义(1970-),男,高级工程师,博士,主要从事地震波成像技术研究,E-mail:shangangyi@jlu.edu.cn
基金资助:
国家高技术研究发展计划（"863"计划）项目（2014AA06A613）

Pre-Stack Depth Migration Based on Model Confined Kirchhoff Integration

Shan Gangyi, Han Liguo, Zhang Lihua

College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China

Received:2017-09-29 Online:2018-03-26 Published:2018-03-26
Supported by:
Supported by National High-Tech Research and Development Program ("863" Program) of China (2014AA06A613)

摘要/Abstract

摘要： 与时间域偏移方法比较，叠前深度偏移成像方法能够适应剧烈横向速度变化、陡倾角反射的地震资料。本文通过研究Kirchhoff叠前深度偏移方法成像原理，首先建立初始速度模型；然后在初始速度模型中加入了目标地质体——盐丘作为层位，对初始速度模型进行优化，在层位的约束下通过多次迭代计算，对优化前后的两个速度模型求取旅行时差更新初始速度模型；最后利用更新后的初始速度模型进行Kirchhoff积分法叠前成像。叠前时间偏移和模型约束下的Kirchhoff积分法叠前深度偏移成像结果显示，后者成像具有更高的信噪比和分辨率。

关键词: 叠前时间偏移, 叠前深度偏移, 地质模型

Abstract: To compare the pre-stack migration in the time domain (PSTM), the pre-stack migration in the depth domain (PSDM) can adapt to the seismic data which has the high dip angle and the large variation of the velocity in the horizon. Based on the imaging principle of Kirchhoff pre-stack depth migration method, we established the initial velocity model at first; then added the target geological body-Salt Dome to the initial velocity model,and further optimized it;under the constraints of the horizon of the salt dome, we computed the difference of two travel times through a lot of iterations so as to update the initial velocity model. By the updated initial velocity model, the Kirchhoff integral method is used to migrate the seismic data. The job can be finished if the corrected reflection phase of the common imaging point gather is at the same level;if not, the horizon of the salt dome has to be modified again and again. We can modify the horizon by use of the well logs and the geological knowledge or consult with the geological experts. Taking this new modeling approach, the latter image has higher S/N and resolution compared to the results of the PSTM imaging methods under the constraints of the horizon of the salt dome. The specific performance is the clear breakpoint, outstanding wave group characteristics; especially, the outline of the salt dome has very clear boundaries, and the bottom of the salt dome image is also much more improved than that of the image of the PSTM.

Key words: pre-stack migration in the time domain, pre-stack migration in the depth domain, geological model

中图分类号:

P631.4

单刚义, 韩立国, 张丽华. 基于模型约束的Kirchhoff积分法叠前深度成像[J]. 吉林大学学报(地球科学版), 2018, 48(2): 379-383.

Shan Gangyi, Han Liguo, Zhang Lihua. Pre-Stack Depth Migration Based on Model Confined Kirchhoff Integration[J]. Journal of Jilin University(Earth Science Edition), 2018, 48(2): 379-383.

参考文献

[1] 张猛,孟祥宾,匡斌,等. 积分法叠前深度偏移技术在BS6地区的应用[J]. 勘探地球物理进展,2009,32(1):48-54. Zhang Meng, Meng Xiangbin, Kuang Bin, et al. Application of Prestack Depth Migration Techniques of STseis Software System in BS6 Area[J]. Progress in Exploration Geophysics, 2009, 32(1):48-54.
[2] Hagedoorn J G. A Process of Seismic Reflection Inter-pretation[J]. Geophysical Prospecting, 1954, 2(2):85-127.
[3] 杨晓东,秦宁,王延光. 常用叠前深度偏移方法特点分析与实例对比[J]. 地球物理学进展,2015,30(2):740-745. Yang Xiaodong, Qin Ning, Wang Yanguang. Analysis and Examples of Commonly Used Prestack Depth Migration Methods[J]. Progress in Geophysics, 2015, 30(2):740-745.
[4] 王华忠,李伟波,张元巧. 起伏地表条件下偏移到多偏移距叠前时间偏移[J]. 勘探地球物理进展,2007,30(5):361-367. Wang Huazhong, Li Weibo, Zhang Yuanqiao. Prestack Noise Suppression with Ray-Beam Gather Stacking[J]. Progress in Exploration Geophysics, 2007, 30(5):361-367.
[5] 程玖兵,王楠,马在田. 表驱三维角度域Kirchhoff叠前时间偏移成像方法[J]. 地球物理学报,2009,52(3):792-800. Cheng Jiubing, Wang Nan, Ma Zaitian. Table-Driven 3-D Angle-Domain Imaging Approach for Kirchhoff Prestack Time Migration[J]. Chinese Journal of Geophysics, 2009, 52(3):792-800.
[6] 周东红,张志军. 基于三维模型数据的Kirchhoff叠前时间偏移保幅性分析[J]. 地球物理学进展,2016,31(5):2292-2298. Zhou Donghong,Zhang Zhijun.Analysis of the Amplitude Preservation of Kirchhoff Prestack Time Migration Method Based on 3D Model Data[J]. Progress in Geophysics, 2016, 31(5):2292-2298.
[7] 王征,杨锴,董水利,等. 应用叠前时间偏移/反偏移与CRS-OIS叠加削弱倾角歧视影响[J]. 石油地球物理勘探,2015,50(5):839-847. Wang Zheng, Yang Kai, Dong Shuili, et al. Dip Discrimination Reduction with CRS-OIS[J]. Oil Geophysical Prospecting, 2015, 50(5):839-847.
[8] 董臣强,谭明友,张明振,等. Kirchhoff积分法叠前深度偏移技术在孤岛地区的应用[J]. 石油地球物理勘探,2002,37(2):180-184. Dong Chenqiang, Tan Mingyou, Zhang Mingzhen, et al. Application of Prestack Depth Migration in Gudao Area by Kirchhoff Integration[J]. Oil Geophysical Prospecting, 2002, 37(2):180-184.
[9] Luděk Klimeš. Resolution of Prestack Depth Migration[J]. Studia Geophysica et Geodaetica, 2012, 56(2):457-482.
[10] 李振春. 地震偏移成像技术研究现状与发展趋势[J]. 石油地球物理勘探,2014,49(1):1-21. Li Zhenchun. Research Status and Development Trends for Seismic Migration[J]. Oil Geophysical Prospecting, 2014, 49(1):1-21.
[11] 张建伟. 变速介质三维地震叠前深度域成像与应用研究[D]. 成都:成都理工大学,2004. Zhang Jianwei. Research of 3-D Seismic Prestack Depth Domain Imaging in Laterally Varying Media and Application[D]. Chengdu:Chengdu University of Technology, 2004.
[12] Etgen J, Gray S H, Zhang Yu. An Overview of Depth Imaging in Exploration Geophysics[J]. Geophysics, 2009, 74(6):5-17.
[13] Stolt R H. Migration by Fourier Transform[J]. Geo-physics, 1978, 43:23-48.
[14] 方伍宝,孙建国. 复杂条件下的深度成像技术[J]. 石油与天然气地质,2005,26(6):816-822. Fang Wubao, Sun Jianguo. Depth Imaging Technique in Complex Conditions[J]. Oil &Gasgeology, 2005, 26(6):816-822.
[15] 马淑芳,李振春. 波动方程叠前深度偏移方法综述[J]. 勘探地球物理进展,2007,30(3):153-161. Ma Shufang, Li Zhenchun. Review of Wave Equation Prestack Depth Migration Methods[J]. PEG, 2006, 30(3):153-161.
[16] 张新培,于雪峰. 利用地球物理信息描述太古宇潜山有效储集体[J]. 吉林大学学报(地球科学版),2016,46(1):270-278. Zhang Xinpei, Yu Xuefeng. Using Geophysical Information to Describe Effective Reservoirs of Archean Buried Hill[J]. Journal of Jilin University (Earth Science Edition), 2016, 46(1):270-278.
[17] 管文胜,段文胜,查明,等. 利用基于模型的层析速度反演进行低幅度构造成像[J]. 石油地球物理勘探,2017,52(1):87-93. Guan Wensheng, Duan Wensheng, Zha Ming, et al. Low-Relief Structural Imaging with Model-Based Tomographic Velocity Inversion[J]. Oil Geophysical Prospecting, 2017, 52(1):87-93.
[18] 李贺. 速度场及深度偏移方法的优化与应用[D]. 成都:成都理工大学,2015. Li He. Optimization and Application of Velocity Model Building and Depth Migration Method[D]. Chengdu:Chengdu University of Technology, 2015.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

基于模型约束的Kirchhoff积分法叠前深度成像

Pre-Stack Depth Migration Based on Model Confined Kirchhoff Integration

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 11

Metrics

本文评价

推荐阅读 0

[1]	常森, 罗静兰, 付晓燕, 杜支文, 张三, 杜孝华. 苏里格气田水平井地质三维导向技术-以盒₈段辫状河储层为例[J]. 吉林大学学报(地球科学版), 2015, 45(6): 1608-1619.
[2]	吴娟, 陈小宏, 白敏. 黏滞声波高斯束叠前深度偏移[J]. 吉林大学学报(地球科学版), 2015, 45(5): 1530-1538.
[3]	张剑波, 李谢清, 石阳, 朱建勃. 油藏数值模拟中地质模型的建模流程与方法[J]. 吉林大学学报(地球科学版), 2015, 45(3): 860-868.
[4]	薛海涛, 田善思, 卢双舫, 刘敏, 王伟明, 王民. 分散可溶有机质的气源意义[J]. 吉林大学学报(地球科学版), 2015, 45(1): 52-60.
[5]	杨艳林，许天福，李佳琦，王福刚. 应用TOUGH模拟二氧化碳地质储存过程的复杂地质体建模技术与实现[J]. 吉林大学学报(地球科学版), 2014, 44(4): 1307-1313.
[6]	王建民，王佳媛，沙建怀，郭德郧，高海仁，聂武军，秦锐. 鄂尔多斯盆地东部奥陶系风化壳岩溶古地貌特征及综合地质模型[J]. 吉林大学学报(地球科学版), 2014, 44(2): 409-418.
[7]	晏鄂川, 朱大鹏, 宋琨, 林云钿. 基于数值模拟的三峡库区典型堆积层滑坡变形预测方法[J]. J4, 2012, 42(2): 422-429.
[8]	陈文成. 面向成矿远景评价的MapGIS空间分析模型[J]. J4, 2012, 42(1): 280-288.
[9]	周辉, 谢春临, 王尚旭, 李国发. 复杂地表地震资料叠前深度偏移成像[J]. J4, 2012, 42(1): 262-268.
[10]	潘宏勋，方伍宝. 基于PC机群波动方程叠前深度偏移的并行计算策略[J]. J4, 2008, 38(4): 708-0712.
[11]	孙先达,王璞珺，索丽敏，张民志，路杰. 松辽盆地火山岩储层三维可视化描述[J]. J4, 2007, 37(6): 1272-1278.