莱州湾某区块浅部地层地震反射异常原因探讨

doi:10.3969/j.issn.1001-909X.2017.03.005

海洋学研究 ›› 2017, Vol. 35 ›› Issue (3): 34-41.DOI: 10.3969/j.issn.1001-909X.2017.03.005

莱州湾某区块浅部地层地震反射异常原因探讨

刘双双, 朱友生, 周松望, 刘剑涛, 郝高建, 陶华

中海油田服务股份有限公司物探事业部, 天津 300451

收稿日期:2016-01-21 修回日期:2016-10-10 出版日期:2017-09-15 发布日期:2022-11-18
作者简介:刘双双(1984-),男,河北唐山市人,工程师,主要从事海洋工程地质勘察方面的工作和研究。E-mail:liushsh6@cosl.com.cn

Discussion on seismic anomalous reflection in shallow strata in the Laizhou Bay

LIU Shuang-shuang, ZHU You-sheng, ZHOU Song-wang, LIU Jian-tao, HAO Gao-jian, TAO Hua

Geophysical-China Oilfield Services Limited, Tianjin 300451, China

Received:2016-01-21 Revised:2016-10-10 Online:2017-09-15 Published:2022-11-18

摘要/Abstract

摘要： 渤海莱州湾某区块采集的三维地震资料出现反射特征杂乱、同相轴连续性差等现象,对该区块浅部地层进行了电火花物探调查,并在地震资料异常区和非异常区分别选取1个位置进行钻孔,同时对海底面以下150 m范围内的土层进行连续的地质取样。通过对物探和地质资料的综合对比分析,判断造成研究区浅层地震资料反射异常与下述几个方面因素有关:(1)研究区处于莱州湾凹陷东部走滑断裂带内,浅部地层受深部断裂系统影响发育许多小断裂;(2)研究地层中富含大量的浅层气;(3)与邻近区块对比,所揭示浅部地层的土质性质十分异常,土层强度和剪切波速等均明显偏大。

关键词: 异常反射, 影响因素, 地质构造, 土质特性, 浅层气

Abstract: Reflection feature and seismic event continuity appeared in 3D seismic acquisition data was cluttered and poor in one study region of the Laizhou Bay. The sparker investigation was carried out in shallow strata and two geological borings were drilled in the abnormal and normal region respectively, at the same time, the strata were sampled entirely from 0 m to 150 m below the seabed. Through comprehensive comparison and analysis of the geophysical data and geotechnical data, it is clear that anomalous seismic reflection in shallow strata of the study region relates to various influence factors below: (1) The study region is in the eastern Laizhou Bay Sag strike-slip zone, and therefore many small faults which were affected by the fault system were developed in the shallow strata.(2) An amount of shallow gas was revealed in the shallow strata.(3) Comparing with the shallow strata of nearby region, the soil characteristic was anomalous in the study region; the soil strength and shear wave velocity were significantly larger.

Key words: anomalous reflection, influence factor, geological structure, soil characteristic, shallow gas

中图分类号:

P539.1
P736

刘双双, 朱友生, 周松望, 刘剑涛, 郝高建, 陶华. 莱州湾某区块浅部地层地震反射异常原因探讨[J]. 海洋学研究, 2017, 35(3): 34-41.

LIU Shuang-shuang, ZHU You-sheng, ZHOU Song-wang, LIU Jian-tao, HAO Gao-jian, TAO Hua. Discussion on seismic anomalous reflection in shallow strata in the Laizhou Bay[J]. Journal of Marine Sciences, 2017, 35(3): 34-41.

参考文献

[1] SHI Ze-jin, XIA Wen-qian, WANG Chang-cheng, et al.Characteristic and implications of the seismic abnormal responses of carboniferous Huanglong formation in Fuling area, southeastern Sichuan Basin[J].Computing Techniques for Geophysical and Geochemical Exploration,2011,33(3):231-236.
施泽进,夏文谦,王长城,等.川东南涪陵地区石炭系黄龙组地震异常特征及其意义[J].物探化探计算技术,2011,33(3):231-236.
[2] SU Cheng, LI Chun-feng, GE He-ping, et al. Characteristic and formation cause of anomalous reflection on Oligocene and Miocene transition in Xihu Depression, East China Sea Basin[J].Journal of Marine Sciences,2010,28(4):14-21.
苏程,李春峰,葛和平.东海陆架盆地西湖凹陷渐-中新世异常反射体的特征与成因[J].海洋学研究,2010,28(4):14-21.
[3] CHEN Zhong-wei, CHEN Zhong-yun, CUI Yong-fu. The seismic data interpretation of low SNR complicated fault block area in Tabei region of the Subei Basin[J].Fault-Block Oil & Gas Field,2004,11(2):7-9.
陈忠慰,陈忠云,崔永福.低信噪比复杂断块区地震资料解释[J].断块油气田,2004,11(2):7-9.
[4] WANG Zhao-qi, ZHUANG Xi-jin, HU Bing, et al. The application of target-oriented seismic data processing technique in complex faulted block area[J]. Petroleum Geophysics,2012,10(1):36-40.
王兆旗,庄锡进,胡冰,等.复杂断块地区地震资料目标处理技术应用研究[J].油气地球物理,2012,10(1):36-40.
[5] QIAN Jian-zhong, ZENG Jiu-ling.Identity method of gas hydrate in the seismic profile[J].Offshore Oil,2002(3):54-59.
钱建中,曾久岭.地震剖面上的天然气水合物识别方法[J].海洋石油,2002(3):54-59.
[6] WANG Hai-li, ZHAI Jun-wei, NING Hong-xiao, et al. Identification and elimination of non-gas-related seismic anomalies in the Sanhu area,Qaidam Basin[J].Natural Gas Industry,2011,31(6):39-45.
王海立,翟俊伟,宁宏晓,等.三湖地区真假含气地震异常的识别与处理技术[J].天然气工业,2011,31(6):39-45.
[7] YE Yin-can, CHEN Jun-ren, PAN Guo-fu, et al. A study of formation cause, existing characteristics of the shallow gas and its danger to engineering[J].Donghai Marine Science,2003,21(1):7-36.
叶银灿,陈俊仁,潘国富,等.海底浅层气的成因、赋存特征及其对工程的危害[J].东海海洋,2003,21(1):7-36.
[8] GU Zhao-feng, ZHANG Zhi-xun, LIU Huai-shan, et al. Contrast between traps at the shallow subbotom depth and the seismic reflection features of shallow gas[J].Marine Geology & Quaternary Geology,2009,29(3):115-122.
顾兆峰,张志珣,刘怀山,等.海底浅层圈闭与浅层气地震反射特征对比[J].海洋地质与第四纪地质,2009,29(3):115-122.
[9] LI Ping, DU Jun, LIU Le-jun, et al.Distribution characteristics of the shallow gas in Chinese offshore seabed[J].The Chinese Journal of Geological Hazard and Control,2010,21(1):69-74.
李萍,杜军,刘乐军,等.我国近海海底浅层气分布特征[J].中国地质灾害与防治学报,2010,21(1):69-74.
[10] SUN He-feng, ZHOU Xin-huai, PENG Wen-xu, et al. Characteristics of salt related structures in the eastern strike-slip zone of Laizhou Bay Sag[J]. Journal of Earth Sciences and Environment,2008,30(4):380-384.
孙和风,周心怀,彭文绪,等.莱州湾凹陷东部走滑带盐相关构造特征[J].地球科学与环境学报,2008,30(4):380-384.
[11] SUN He-feng, ZHOU Xin-huai, PENG Wen-xu, et al.An analysis of salt structure and accumulation in Kenli 11 district of Laizhou Bay Sag[J].Offshore Oil,2007,27(3):46.
孙和风,周心怀,彭文绪,等.莱州湾凹陷垦利11区盐构造特征及成藏分析[J].海洋石油,2007,27(3):46.
[12] CHEN Zong-yi, ZHOU Jing-xing, WANG Hong. Soil mechanics[M].Beijing:Tsinghua University Press,1994:15-16.
陈仲颐,周景星,王洪.土力学[M]. 北京:清华大学出版社,1994:15-16.

莱州湾某区块浅部地层地震反射异常原因探讨

Discussion on seismic anomalous reflection in shallow strata in the Laizhou Bay

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics