济阳坳陷沾化凹陷桩南断裂带储层精细划分对比方法探究

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1、济阳坳陷沾化凹陷桩南断裂带储层精细划分对比方法探究　　摘要：济阳坳陷沾化凹陷桩南断裂带断裂复杂，储层精细划分对比难度极大。在前人研究成果的基础上，首次提出断裂带储层细分对比方法，“逐级细分、分区对比、全区统一”是该方法的3个主要方面。逐级细分强调的是纵向上由油层组→砂层组→小层→单砂体的细分对比，选择好的辅助标志层和邻井对比标志是做好逐级细分的关键；分区对比则强调平面上利用邻井对比标志均有一定的分布范围且存在重叠的特点，采用多标志控制原则进行分区对比，最终实现全区范围的对比统一。该方法的创新之处在于泥岩辅助标志层的发现及应用、重新确定邻井对比标志及其

2、系统归类、首次提出多标志综合叠加应用的对比方法。最后，该方法在桩南断裂带储层细分对比中取得了很好的效果，有效解决了原对比方案中方法较单一、对比精度低等问题，有助于类似的复杂断块区储层精细划分对比工作。关键词：辅助标志层；邻井对比标志；东营组；馆陶组；桩南断裂带；沾化凹陷；济阳坳陷中图分类号：P618.130.2+1；TE122.2文献标志码：AStudyontheMethodofStratigraphicAccurateCorrelationand18SubdivisioninZhuangnanFaultZoneofZhanhuaSag，Jiyang

3、DepressionCHENQinghua，WANGJing，SHIYanhong，XIAOFei（SchoolofGeosciences，ChinaUniversityofPetroleum，Qingdao266580，Shandong，China）Abstract：StratigraphicaccuratecorrelationandsubdivisionareverydifficultbecauseofthecomplicatedfaultsinZhuangnanfaultzoneofZhanhuasag，Jiyangdepression.Ac

4、cordingtotheformersresearch，amethodofstratigraphicaccuratecorrelationandsubdivisioninfaultzonewasfirstproposed.Themethodmainlyincludedstepbystepsubdivision，partitioncorrelationandunifiedallregion.Forstepbystepsubdivision，thesubdivisionwasfromoillayergrouptosandgroup，thentosingl

5、elayer，andlatertosinglesandbodyinvertical，andtheselectionofauxiliarymarkerformationandcorrelationmarkerofadjacentwellswasthekey；forpartitioncorrelation，thedistributionofcorrelationmarkerofadjacentwellswascertainandoverlapping，multimarkercontrolprinciplewasusedforpartition18corr

6、elation，andfinallyunifiedallregioncorrelationwascarriedout.Theinnovationpointsofthemethodincludedthediscoveryandapplicationofmudstoneauxiliarymarkerformation，redefinitionandclassificationofcorrelationmarkerofadjacentwellssystematically，andthefirstintroductiononmultimarkerintegr

7、atedoverlappingapplicationcorrelationmethod.Finally，themethodappliedonstratigraphiccorrelationandsubdivisioninZhuangnanfaultzonewaseffective，andsolvedtheproblemincludingthesimplemethodandtheloweraccuracyofcorrelationintheoldcorrelationscheme，andimprovedthestratigraphicaccuratec

8、orrelationandsubdivisioninsimilarcomplexfaultblockarea