利用地震属性资料解释河道

2007年 14卷 第02期
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Channel interpretation based on seismic attribute
data
宁松华
N ing Songhua
长江大学地球物理与石油资源学院, 湖北荆州434023
K ey Laboratory of Oil & Gas
R esources and Exploration Technique of M inistry
Education, Yangtze University, J ingzhou 434023, China
地下某一层段的地震属性特征通常揭示了一些地质或沉积特征, 如礁体、河道、
三角洲、地台等。文中采用分层段切片解释方法, 对塔河油田外围兰尕三维资料进行切片分
析, 在三叠系上油组地层中的振幅属性平面图上分布有南北方向的河道, 地震解释剖面及钻井
资料也得到证实。研究中发现, 分析时窗的大小决定了振幅属性在河道处能量的强弱, 根据河
道的分布可以追踪河道砂岩体及其分布范围, 为研究有利储层提供了可靠依据。
Som e attributes no rm ally revea l a num be r o f geolog ica l
and sed im enta ry features in form ation, such as the ree,f r ive r,
de lta and platform, etc. By stratified slice interpreta tion
m ethod in the paper, 3D da ta o f the ou tside of the Tahe
O ilfie ld are ana lyzed and it is found tha t the area d istr ibutes a
north- sou th channel on the am plitude a ttr ibu te d istribution
m ap in the of T46s Group, Uppe r Tr iassic stra ta, wh ich has
been confirmed in dr illing and se ism ic interpretation pro files.
It is discovered in the resea rch tha t the w indow s ize
determ ines the energy strength of am plitude attribute of the
channe .l A cco rding to the d istr ibu tion of the channe ,l the
channe l sand and its d istribution can be tracked, wh ich
prov ides a reliab le basis fo r study ing favorab le reservo ir
塔河油田 地震属性 时间切片 河道;
Tahe O ilfie ld, se ism ic a ttr ibu tes, tim e slice,
channe .l;