基于测井资料和地震属性分析地震相分布
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摘要
地震相是特定沉积相或地质体在地震剖面图上所反映的主要特征的总和,是沉积和地震之间联系的枢纽。利用不同相带的井在地震剖面上的标定结果和声波时差统计,在常规地震剖面和瞬时相位剖面初步得到相带划分图。根据地震反射层的外形结构、频率、振幅及连续性等特征,建立三种沉积相对应的地震相模式,分析沿目标地层顶界地震属性切片,筛选对相带边界表征清晰的属性,确定出地震相的分布区域,这对以后的储层预测和生物礁的发现提供技术支持。
Seismic facies have the main features of specific sedimentary facies or geologic bodies that reflect from the seismic section,which is the link between sediment and seism.Making use of seismic calibrating result and acoustic travel time statistics of the well in different facies belt,we could preliminarily get the distribution map of seismic facies from the regular seismic section and instantaneous phase section.According to the features like the outside structure of seismic reflection layer,frequency,amplitude and consistence,we could establish three sedimentary facies that are corresponding to the seismic facies models.On the basis of this,we analyze the slice of seismic attribution from the top boundary of target layer,single out the seismic attribution which can distinguish the facies belt and finally determine the distribution area of seismic facies,all of which will provide a technical support for reservoir prediction and reef discovery in the future.
Seismic facies have the main features of specific sedimentary facies or geologic bodies that reflect from the seismic section,which is the link between sediment and seism.Making use of seismic calibrating result and acoustic travel time statistics of the well in different facies belt,we could preliminarily get the distribution map of seismic facies from the regular seismic section and instantaneous phase section.According to the features like the outside structure of seismic reflection layer,frequency,amplitude and consistence,we could establish three sedimentary facies that are corresponding to the seismic facies models.On the basis of this,we analyze the slice of seismic attribution from the top boundary of target layer,single out the seismic attribution which can distinguish the facies belt and finally determine the distribution area of seismic facies,all of which will provide a technical support for reservoir prediction and reef discovery in the future.
引文
[1]王华.层序地层学基本原理、方法与应用[M].北京:北京大学出版社,2009.128~129.
[2]金惠,魏国齐,杨威,等.安岳—潼南地区须家河组地震相模式及其地质意义[J].天然气地球科学,2009,20(4):544~548.
[3]毕长春,李联新,梅燕,等.川东长兴组生物礁分布控制因素及地震识别技术[J].天然气地球科学,2007,18(4):509~513.
[4]何诚,李邗,张延充,等.单频成像技术在油气检测中的应用[J].天然气工业,2008,28(4):40~42.
[2]金惠,魏国齐,杨威,等.安岳—潼南地区须家河组地震相模式及其地质意义[J].天然气地球科学,2009,20(4):544~548.
[3]毕长春,李联新,梅燕,等.川东长兴组生物礁分布控制因素及地震识别技术[J].天然气地球科学,2007,18(4):509~513.
[4]何诚,李邗,张延充,等.单频成像技术在油气检测中的应用[J].天然气工业,2008,28(4):40~42.
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