|
高利君,男,1988年生,高级工程师,在读博士研究生。研究方向:地震数据高分辨率处理。E-mail:gaolij.xbsj@sinopec.com |
收稿日期: 2025-05-26
修回日期: 2025-05-31
网络出版日期: 2025-11-06
基金资助
中国石油化工集团公司重点项目:超深-特深层钻井地质工程一体化研究与应用(P24136)
中国石油化工集团公司科研项目超深-特深层碳酸盐岩圈闭识别描述与评价技术研究(P24009)
An interpretative high-resolution seismic data processing method based on multi-level fractional calculus
|
GAO Lijun,male,born in 1988,senior engineer,PhD’s candidate,focusing on seismic imaging process. E-mail:gaolij.xbsj@sinopec.com |
Received date: 2025-05-26
Revised date: 2025-05-31
Online published: 2025-11-06
Supported by
Study on identification,description and evaluation technology of ultra-deep and super-deep carbonate rock traps(P24136)
Integrated research and application of ultra-deep and super-deep drilling geological engineering(P24009)
在地震勘探中,高分辨率地震反射成像数据体是实现沉积盆地薄层砂体和断裂构造精细识别的关键手段。而实际地震成像剖面往往面临低频与高频信号缺失,进而导致地震成像分辨率低,无法有效实现油气及铀煤等矿产资源的有效识别。在信号处理中,有效信号的积分及微分算法分别反应其低频和高频成分。基于此原理,提出一种基于多级分数阶微积分方法的解释性高分辨率处理方法。通过分别计算有效信号的不同分数阶成分,获得地震成像剖面中缺失的低频及高频成分,通过引入多元高斯理论与贝叶斯理论,以及统计学反演改进加权系数的求解过程,建立了宽频高分辨率地震成像剖面。与传统微积分高分辨率处理方法相比,本方法能有效提高加权系数的求解准确性,并且有效避免了加权系数计算误差对精度的影响。陆上及海上实际数据处理结果表明,本方法能够有效提升地震数据的分辨率和频带范围,提高地震成像对砂体等构造的高分辨率识别。
高利君 , 李海英 , 杨威 , 龚伟 , 李卿卿 . 基于多级分数阶微积分的地震数据解释性高分辨率处理方法[J]. 世界核地质科学, 2025 , 42(3) : 552 -564 . DOI: 10.3969/j.issn.1672-0636.2025.03.007
In seismic exploration,high-resolution seismic reflection imaging data volumes are critical tools for achieving fine identification of thin sandstone bodies and fault structures in sedimentary basins. However,actual seismic imaging profiles often face the loss of low- and high-frequency signals,leading to low seismic imaging resolution and ineffective identification of oil,gas,uranium,coal,and other mineral resources. In signal processing,integral and differential algorithms of effective signals respectively reflect their low- and high-frequency components. Based on this principle,this paper proposes an interpretative high-resolution processing method using multi-level fractional calculus. By separately calculating different fractional-order components of effective signals,the missing low- and high-frequency components in seismic imaging profiles are obtained. Through the introduction of multivariate Gaussian theory,Bayesian theory,and statistical inversion to improve the solving process of weighting coefficients,a broadband high-resolution seismic imaging profile is established. Compared with traditional calculus-based high-resolution processing methods,this method effectively enhances the accuracy of weighting coefficient determination and avoids the impact of calculation errors on precision. Processing results from both onshore and offshore actual data demonstrate that the proposed method significantly improves the resolution and frequency bandwidth of seismic data,thereby enhancing high-resolution identification of sand bodies and related structures.
图6 提频前后频谱对比a—原始数据频谱;b—常规提频方法数据频谱;c—多级分数阶提频方法数据频谱。 Fig. 6 Spectrum comparison before and after frequency enhancement a-Frequency spectrum of the original seismic data;b-Frequency spectrum of seismic data using conventional method;c-Frequency spectrum of seismic data after multi-level fractional calculus. |
| 1 |
|
| 2 |
李子颖, 秦明宽, 郭庆银, 等. 渗出砂岩型铀矿成矿预测与找矿标志[J]. 铀矿地质, 2024, 40(1):1-15.
|
| 3 |
宁媛丽, 李金鑫, 赵威, 等. 砂岩型铀矿高精度三维地震勘探砂体识别关键技术研究——以松辽盆地 HLJ 地区为例[J]. 世界核地质科学, 2024, 41(6):1156-1167.
|
| 4 |
乔宝平, 潘自强, 程纪星, 等. 砂岩型铀矿地震反射波高精度成像关键问题分析[J]. 世界核地质科学, 2024, 41(6):1065-1075.
|
| 5 |
|
| 6 |
|
| 7 |
|
| 8 |
|
| 9 |
|
| 10 |
|
| 11 |
|
| 12 |
|
| 13 |
汪小将, 陈宝书, 曹思远. HHT振幅频率恢复处理技术研究与应用[J]. 中国海上油气, 2009, 21(1):19-22.
|
| 14 |
高静怀, 汪玲玲, 赵伟. 基于反射地震记录变子波模型提高地震记录分辨率[J]. 地球物理学报, 2009, 52(5):1289-1300.
|
| 15 |
尚新民, 刁瑞, 冯玉苹, 等. 谱模拟方法在高分辨率地震资料处理中的应用[J]. 物探与化探, 2014, 38(1):75-80.
|
| 16 |
|
| 17 |
王元君, 周怀来. 时频域动态反褶积方法研究[J]. 西南石油大学学报(自然科学版), 2015, 37(1):1-10.
|
| 18 |
张彬彬, 张军华, 吴永亭. 地震数据低频信号保护与拓频方法研究[J]. 地球物理学进展, 2019, 34(3): 1139-1144.
|
| 19 |
赵圣亮, 王晓明, 王建华. 一种简易的频率补偿方法[J]. 石油地球物理勘探, 1994, 29(2):231-235
|
| 20 |
云美厚, 纪陈宇, 崔景涛. 求导能否提高地震记录的分辨率[J]. 石油地球物理勘探, 1997, 32(5): 740-748
|
| 21 |
佘德平, 曹辉, 王咸彬. 相干数据体及其在三维地震解释中的应用[J]. 石油物探, 1998, 37(4):75-79
|
| 22 |
|
| 23 |
郭欣, 雍学善, 高建虎, 等. 基于二阶谱及多阶微分融合的频谱拓展方法[J]. 地球物理学进展, 2016, 31(5): 2095-2102.
|
| 24 |
廖科. 分数阶微积分运算数字滤波器设计与电路实现及其应用[D]. 成都: 四川大学, 2006.
|
/
| 〈 |
|
〉 |