石油与天然气地质 ›› 2002, Vol. 23 ›› Issue (3): 252-256.doi: 10.11743/ogg20020311

• 油气空间 • 上一篇    下一篇

线性化地震剖面在沉积相研究中的应用

张新荣, 王东坡, 高福红, 徐开志   

  1. 吉林大学地球科学学院, 吉林长春, 130026
  • 收稿日期:2002-04-26 出版日期:2002-09-25 发布日期:2012-01-16

APPLICATION OF LINEARIZED SEISMIC PROFILE IN SEDIMENTARY FACIES RESEARCH

Zhang Xinrong, Wang Dongpo, Gao Fuhong, Xu Kaizhi   

  1. College of Earth Science, Jilin University, Changchun, Jilin
  • Received:2002-04-26 Online:2002-09-25 Published:2012-01-16

摘要:

线性化处理就是将黑白同相轴变成线,正性轴用实线表示,负性轴用虚线表示。经线性化处理后,现有的二维或三维地震剖面的地质信息更加突出,反映的内容更加清晰。以松辽盆地安达断陷营城组为例,通过对DS1井单井相分析,沉积微相判别,建立地震相与沉积相的对应关系。在对地震剖面进行线性化处理后对沉积进行了解释,认为营城组时期火山活动强烈,以溢流相为优势相,并发育有沼泽相、辫状河相和半深湖相等。该沉积相带大致呈环带状展布,被隆起分为南北两个断陷湖泊,北部安达小区主要为洪泛平原,中间为火山岩,明水斜坡及四周丘陵为物源区;南部宋站小区呈东西向延伸,中央隆起区为火山岩,有二个半深湖沉积中心,物源为四周隆起地带。

关键词: 线性化, 地震剖面, 安达断陷, 地震相, 沉积相, 应用

Abstract:

Linearization processing is somehow to turn black and white isopic axis into a line where the positive axis indicated by a solid line while the negative axis shown by a dotted line. After the linearization processing, geological information in the available two dimensional or three dimensional geological profile will be more highlighted and reflect it more clear for what it is. Take Yingcheng Formation within Anda fault depression in Songliao basin for example, a corresponding relation between seismic phase and sedimentary facies has been established by analyzing single well facies of Dashen No.1 well and through sedimentary microfacies division.It is believed by interpreting sedimentary facies after the linearization processing for through wells and non-through wells in the region that in the period of Yingchen Formation the volcanic activity was strong and overflow facies was a dominant one developed by swamp facies, braided stream facies and semi-deep lacustrine facies etc. The extension of the sedimentary facies belt is just like a ringlike belt divided into two S-N fault depressed lakes by the uplift, small Anda area in the north is mainly composed of flood plains with volcanic rocks in the middle and Mingshui slope and hills around are believed to be material source areas; Small Songzhan area in the south trend to E-W direction with the volcanic rock uplift at the center, and with two semi-deep lacustrine deposit centers and uplift zones around are material source areas.

Key words: Linearization, seismic profile, Anda fault depression, seismic phase, sedimentary facies application

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