瀘州古隆起嘉陵江組一段灘相薄儲層分布規(guī)律

打開文本圖片集

Distribution of the Thin Reservoir of Shoal Facies at the Top of Member 1 of the Jialingjiang Formation in Luzhou Palaeohigh

TANGHao1*，LIAO Zichao1，SUNHaofei2，XUChang2，CHENXiao2

1.SchoolofGeoscienceand Technology，SouthwestPetroleum University，Chengdu，Sichuan61O5oo，China orationandDevelopmentesearchIstitute，outhwestOil&GasFeldompanyetroCina，Chngduiuana

Abstract：The first Memberandsecond MemberoftheLowerTriassic JialingjiangFormation inLuzhou Paleoupliftare the mainoilresouresinichuanBasin，however，thereservoirespeciallythethinsalreservoirdistributionisotlearyetwich restrictsoilexplorationprocessBasedoncore，cutingsandwelloggingdata，thispaperresearchesreservoirchaacteristics， reservoirgenesis mechanismandpaleogeomorphologyandgetthefollowingresults.Thereservoirlithology is mainlycomposedof thin-middleooliticand bioclastic limestone，andthemainreservoir space is thedisolved intragranularporesand moldicpores.Thephysicalpropertiesaregenerallypoor，buthighporosityand permeabilitylayersaredevelopedlocallyThe leaching ofmeteoric wateris themainreservoirgenesis mechanism，whilepaleoupliftis thekeytoformreservoirbydepositing grainshoalsandsyngenetickarstification.Thewelloggingstatisticsshowthatthethickness of granulatedrockinthefirst MemberofJialingjiangFormation ispositivelycorrelatedwiththethicknessofstrata，whichindicatesthatthethicknessof stratareflectstelevelofsdimentarypalaeotopographyThereforeitisconsideredtatthecentralofLuzhoupalaeouplift，the eastern marginofKangdianpalaeocontinentalandthesouthernareaoftecentralSichuanpalaeoupliftarethre mainfavorable areas forreservoirdevelopment.Thisresearch can beusedasreference for the explorationanddevelopmentofJialingjiang Formation inSichuanBasin，and more important itcanalsoprovideacasestudyforthedistributionofthinshoalreservoirin the world.

Keywords：carbonates; shoal facies reservoir; JialingjiangFormation;Luzhou Paleouplift;Sichuan Basin 網(wǎng)絡(luò)出版地址：http：//link.cnki.net/urlid/51.1718.TE.20240913.1553.004

引言

大型古隆起是指沉積盆地中形成于地質(zhì)歷史時期的、體積巨大的正向地貌單元[1]，當(dāng)其被海水覆蓋時容易形成廣闊的沉積地貌高地，從而連片發(fā)育碳酸鹽巖礁、灘相沉積，是海相碳酸鹽巖儲層勘探的重要對象[2-5]。（剩余19586字）