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Application of Cross Multipole Array Acoustic Logging in Cased Hole
Author(s): 
Pages: 194-196
Year: Issue:  2
Journal: WELL LOGGING TECHNOLOGY

Keyword:  过套管测井交叉多极阵列声波(XMAC)测井单极全波纵波水泥胶结;
Abstract: 为寻求裸眼井地层纵波测井资料缺失时的补救办法,对在大港油田滩海区块5口井中的声波测井资料进行了分析,试探从过套管交叉多极阵列声波(XMAC)测井资料中提取地层纵波信号的可行性.XMAC在套管井中采用单极全波测量模式.从下套管前后测得的全波波形的差异可区别套管波和地层纵波,采用慢度-时间相关STC(Slowness-Time Coherence)法可提取地层纵波.对比了在不同水泥胶结质量、套管状况和井眼条件下的套管井与裸眼井声波测井资料,归纳出了过套管声波测井的使用条件和局限性.当套管及地层都与水泥环胶结良好时,方可从过套管XMAC全波资料中提取出地层纵波信号.
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