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2022, 41(3) 568-582 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Reservoir characteristics and controIIing factors of PrepaIeogene granitic buried-hiII in Songnan Iow upIift, Qiongdongnan Basin |
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LIHongming1 , WANGPujun1 , XUShou1i2,3 , LIUYingsong2,3 , WUShijiu2,3 ,JIAOYaoqi2,3 , WANGYanquan1,4 , LIUYanan1 , SONGGuomin1 , ZHANGYan1#br# |
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1.CollegeofEarth Sciences, ]ilin University, Changchun 130061, China;
2.Zhanjiang Branch ofChina NationalOffshoreOilCorporation Ltd., Zhanjiang 524057, Guangdong, China;
3.Haikou Branch ofChina NationalOffshoreOilCorporation Ltd., Haikou 524057, China;
4.CollegeofPetroleumEngineering, Guangdong InstituteofPetrochemicalTechnology, Maoming 525000, Guangdong, China
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Abstract：
The characteristics and contro11ingfactorsofgraniticburied-hi11reservoirsin theSongnan 1owup1ift oftheQiongdongnan Basin arestudied based on wa11coreobservation, thin section identification, faceratestatistics ofreservoirspace, porosityand permeabi1ityana1ysis, 1oggingdataand seismicprofi1einterpretation.Itisshown thatthereservoirspaceofgraniticburied-hi11reservoirin Songnan 1owup1iftismain1ydominated bydisso1ved pores and fractures.Thereservoiris1ongitudina11ydivided intoweatheringdisso1ution zone, weatheringfracturezone and structura1fracturezone.Theweatheringdisso1ution zoneand weathering fracture zone have better reservoir physica1 properties， whi1etheheterogeneityofreservoirphysica1propertiesisstrongin structura1fracturezone.Theforma- tion ofburied hi11reservoiriscontro11ed byweathering1eachingand fau1tactivity.Theactivetransformation ofbed- rock buried-hi11reservoirin Songnan 1owup1iftisdecided byweatheringand 1eaching.Thepowerrequired forthe deve1opment of bedrock buried-hi11 reservoir comes from fau1t activity.
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Keywords：
graniticburied-hi11
reservoir
crack
Songnan 1owup1ift
Qiongdongnan Basin
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Received Revised Online: |
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