新疆石油地质

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (6): 517-519.

• 油气勘探 • 上一篇    下一篇

塔河地区石炭系盐体对地震参数及成象精度的影响

刘群1, 吕景英2, 张晓辉2   

  1. 1.成都理工大学 能源系,四川 成都 610000;
    2.中国石化 新星石油公司 西北石油局,新疆 乌鲁木齐 830011
  • 收稿日期:2003-02-14 出版日期:2003-12-01 发布日期:2020-08-24
  • 作者简介:刘群(1965-), 男,湖南长沙人,高级工程师,在读硕士研究生,地球物理勘探。联系电话:0991-6637217-24786

The Effect of Salt Structure of Carboniferous in Tahe Area on Seismic Data and Imaging Accuracy

LIU Qun1, LV Jing-ying2, ZHANG Xiao-hui2   

  1. 1. Department of Energy, Chengdu University of Technology, Chengdu, Sichuan 610000, China;
    2. Northwest Petroleum Bureau, New Star Oil Company, Sinopec, Urumqi, Xinjiang 830011, China
  • Received:2003-02-14 Online:2003-12-01 Published:2020-08-24

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摘要： 塔里木盆地塔河地区石炭系盐体覆盖面较大,约1500km2,最大厚度约270m,是塔河主力油区实行东扩的目标区。塔河油田的主力产油层为下奥陶统顶面的缝洞型储集层,而盐体位于该产油层之上,因而研究盐体对下伏地层地震参数及t0成象精度的影响就显得非常重要。为此,选择了一块最具有代表性的150km2有盐区域作为研究区,对此区块进行重新精细处理,并进行炮域、克希霍夫叠前深度偏移,研究盐岩对下伏地层构造的影响;同时对研究区内下伏地层地震反射波进行振幅、频率的提取,研究盐体对地震波运动学、动力学参数的影响。

关键词: 塔河地区, 石炭纪, 盐膏层, 构造, 振幅, 频率, 成象

Abstract: The salt body of Carboniferous in Tahe area of Tarim basin, covering an area about 1500km2, with maximum thickness of about 270m, is a target zone of this area toward east extending.The salt body is located on the main oil zone that belongs to fissure-cave reservoir of Lower Ordovician in Tahe oilfield.Since it is significant for investigation of effect of this salt body on underlying strata’s seismic data and imaging accuracy, the most representative area of 150km2 within salt body is selected as a studied area. Through detailed re-processing and shot and prestack migration, the effect of the salt on underlying formation structures is studied. In addition, based on picking-up frequency and amplitude from seismic reflection event in the underlying formations within studied area, the effect of the salt on kinematic and kinetic parameters of the seismic wave is analyzed.

Key words: Tarim basin, Tahe area, Carboniferous, salt bed, structure, amplitude, frequency, image

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