钙质隔夹层特征、成因及分布——以塔里木盆地哈得油田东河砂岩为例-论文.pdf

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1、石油勘探与开发4282014年8月PETR0LEUMEXPL0RATIONANDDEVELOPMENTVO1．41NO．4文章编号：1000-0747(2014)04-0428—10DOI：10．11698／PED．2014．04．06钙质隔夹层特征、成因及分布一以塔里木盆地哈得油田东河砂岩为例韩如冰，刘强2，江同文2，徐怀民，徐朝晖，赵磊，雷诚，张鹏程(1．中国石油大学(北京)地球科学学院；2．中国石油塔里木油田公司)基金项目：国家科技重大专项“岩性地层油气藏成藏规律关键技术”(2011ZX05001)摘要：综合利用露头、岩心、普通薄片、铸体薄片、扫描电镜、碳氧稳定同位素、常规测井和地

2、层倾角测井等资料，对塔里木盆地哈得油田东河砂岩钙质隔夹层的岩石学特征、测井响应特征、成因模式及分布规律进行系统研究。研究区钙质隔夹层主要为钙质细、粉砂岩，成分成熟度与结构成熟度都较高，钙质成分包括方解石、铁方解石、白云石、铁白云石、硬石膏等。虽然钙质隔夹层一般厚度较薄，但结合常规测井和地层倾角测井资料仍可将其识别。建立了3种钙质隔夹层的成因模式：浅埋藏淡水环境隔夹层、蒸发作用隔夹层和深埋藏期隔夹层。结合沉积相带发育情况，认为钙质隔夹层在临滨、后滨较为发育，容易连片，井问易连续；结合高精度层序地层学特征，认为东河砂岩岩层组界面钙质隔夹层具体产状主要有5种：“上钙下泥”型、“上泥下钙”型、“

3、钙．泥一钙”型、钙质单层界面型和钙泥质界面型。图9表2参33关键词：东河砂岩；钙质隔夹层；成因模式；滨岸相；高精度层序地层学中图分类号：TE122．2文献标识码：AFeature，originanddistributionofcalcareousinterlayers：AcaseofCarboniferousDonghesandstoneinHadeOilField，TarimBasin，NWChinaHanRubing，LiuQiang，JiangTongwen，XuHuaimin，XuZhaohui，ZhaoLei，LeiCheng，ZhangPengcheng(1．ChinaUni

4、versityofPetroleum(Beijing)，CollegeofGeosciences，Beijing102249，China2．PetroChinaTarimOilFieldCompany，Korla841000，China)Abstract：Thepetrologiccharacteristics，well-logging，geneticmodelsanddistributionpatternsofcalcareousinter-layersinCarboniferousDonghesandstone，HadeOilFieldwereinvestigatedsystemat

5、icallybyusingdatasuchasoutcrop，cores，thinsections，stablecarbonandoxygenisotopiccompositions，conventionalloggingcurves，anddiploggingcurves．Calcareousinter-layersinthestudyareaaremadeupofcalcareousfinesandstoneorcalcareoussiltstoneofhighcompositionalandtexturalmaturity,inwhichcalcareouscomponentsin

6、cludecalcite，ferro-calcite，dolomite，ferro—dolomiteandanhydrate．Althoughthecalcareousinter-layersareusuallythin，theycanbeidentifiedbycombiningconventionalloggingcurveswithdiploggingcurves．Threegeneticmodelsofcalcareousinter-layersareidentified，includingshallowburialfreshwater,evaporationanddeepbur

7、ia1．Accordingtothedevelopmentofsedimentaryfacies，itisinferredthatcalcareousinterlayersarewell—developedinshorefaceandbackshoresandstones，andlikelytojointogetherandshowcontinuitybetweenwells；basedonfeaturesofhigh—resolu