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时间:2020-05-09
《查干凹陷砂砾岩体溶蚀孔隙储层测井解释方法.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第39卷第3期测井技术VolI39No.32015年6月WELLLOGGINGTECHNOI)GYJun2015文章编号:1004—1338(2015)03—0300—05查干凹陷砂砾岩体溶蚀孑L隙储层测井解释方法李风玲,翟芳芳,任杰,陈彬(中石化中原油田分公司勘探开发科学研究院,河南濮阳457001)摘要:查干凹陷下白垩系巴二段是一套近物源、多物源沉积扇体,储层岩屑和长石含量高,非均质性强,物性差,孔隙度和渗透率均较低。受溶蚀作用的影响,储层溶蚀孔隙发育,孔隙结构变化大,声波测井反映孔隙度的能力明显降低,三孑L隙度测井曲线响应特征
2、进一步复杂化,大大降低了储层的识别能力和油层的解释精度。针对该区溶蚀孑L隙发育的砂砾岩体油藏,在岩心分析的基础上开展溶蚀孔储层岩石物理特征研究,建立测井响应特征模式,形成一套定性识别和定量评价溶蚀孔隙储层的测井评价方法,提高了溶蚀孔隙储层的识别能力,实际资料应用效果良好。关键词:测井评价;溶蚀孔储层;常规测井;核磁共振测井;识别方法;应用中图分类号:P631.84;TP216文献标识码:ADoi:10.16489/j.issn.1004—1338.2015.03.007LogInterpretationMethodofChaganS
3、agGravelRockDissolutionPoreReservoirLIFengling,ZHAIFang{ang,RENJie,CHENBin(ZhongyuanOilfieldExplorationandDevelopmentResearchInstitute,SINOPEC,Puyang,Henan457001,China)Abstract:LowerCretaceousBa2SegmentofChaganSagisasetofnearsourceandmulti—provenancesedimentaryfanbodyw
4、ithhighcontentofreservoirrockdebrisandfeldspar,strongheterogeneity,poorphysicalproperty,lowporosityandpermeability.Duetotheerosion,dissolutionporeofreservoirhasdeveloped,thus,itsporestructurehaschangedgreatly,theabilityofacousticloggingreflectingporosityhasobviouslywea
5、kenedandtheresponsecharacteristicsofthreeporosityloggingcurveshavebecomefurthercomplicated.Consequently,theidentificationabilityofreservoirandtheinterpretationaccuracyofoilreservoiraresignificantlyreduced.Basedonthegravelrockreservoirdevelopedbydissolutionporeinthisare
6、aandthecoreanalysis,theresearchonthepetro—physicalcharacterofdissolvedporereservoirisconducted,thecharacteristicpatternofloggingresponseisestablishedandasetofloggingevaluationmethodsofqualitativeidentificationandquantitativeevaluationofdissolutionporereservoirarebuilt.
7、Therefore,recognitionabilityofdissolutionporereservoirisgreatlyimproved.Finally,thismethodisverifiedbyexcellentpracticalapplication.Keywords:logevaluation;dissolutionporereservoir;conventionalwelllogging;nuclearmagnet—icresonance(NMR)logging;identificationmethod;applic
8、ation一套近物源、多物源沉积扇体,储层岩屑和长石含量0引口高,受沉积和成岩作用的影响,储层非均质性查干凹陷位于银根-额济纳旗盆地东部,是极富强,物性差,孔隙度和渗透率均较低。有勘探潜力的含油气凹陷之一,下白垩系巴二段是钻井取心和沉
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