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《低滲透砂巖儲(chǔ)層孔隙結(jié)構(gòu)對(duì)儲(chǔ)層質(zhì)量的影響——以鄂爾多斯盆地姬塬地區(qū)長8油層組為例.pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫。
1、第26卷第5期巖性油氣藏V01．26No．52014年10月LITHOLOGICRESERVOIRSOct．2014文章編號(hào)：1673—8926(2014)05—0069—06低滲透砂巖儲(chǔ)層孔隙結(jié)構(gòu)對(duì)儲(chǔ)層質(zhì)量的影響以鄂爾多斯盆地姬塬地區(qū)長8油層組為例蔡碉，一，熊琦，李勇，一，丁迎超，徐文杰(1．長安大學(xué)地球科學(xué)與資源學(xué)院，西安710054；2．長安大學(xué)成礦作用及其動(dòng)力學(xué)實(shí)驗(yàn)室，西安710054)摘要：應(yīng)用常規(guī)壓汞、鑄體薄片、掃描電鏡和巖石薄片等資料，結(jié)合恒速壓汞實(shí)驗(yàn)，綜合研究了鄂爾多斯盆地姬塬地區(qū)長8低滲透砂巖儲(chǔ)層微觀孔隙結(jié)構(gòu)特征及
2、其對(duì)儲(chǔ)層質(zhì)量的影響。結(jié)果表明，長8儲(chǔ)層孔隙類型多樣．孔隙結(jié)構(gòu)可劃分為4種類型：I類低排驅(qū)壓力一中喉型、Ⅱ類較低排驅(qū)壓力一細(xì)喉型、Ⅲ類中排驅(qū)壓力一微細(xì)喉型和Ⅳ類高排驅(qū)壓力一微喉型。儲(chǔ)層物性與平均孔喉半徑、中值孔喉半徑、分選系數(shù)及最大進(jìn)汞飽和度均具有正相關(guān)性，與結(jié)構(gòu)系數(shù)均具有負(fù)相關(guān)性，而與均值系數(shù)、歪度及退汞效率均無明顯相關(guān)性恒速壓汞測試進(jìn)一步表明．儲(chǔ)層物性與孔隙參數(shù)相關(guān)性不明顯．儲(chǔ)層質(zhì)量主要受喉道的控制。在低滲透儲(chǔ)層開發(fā)過程中應(yīng)注重對(duì)喉道的有效保護(hù)，進(jìn)而取得更好的開發(fā)效果。關(guān)鍵詞：低滲透砂巖；孔隙結(jié)構(gòu)特征；儲(chǔ)層質(zhì)量；姬塬地區(qū)；鄂爾多斯
3、盆地中圖分類號(hào)：TEl12．23文獻(xiàn)標(biāo)志碼：AInfluenceofporestructureonreservoirqualityoflowpermeabilitysandstonereservoir：AcasestudyfromChang8OilreservoirsetinJiyuanarea，OrdosBasinCAIYue一，XIONGQi，LIYong一，DINGYingchao，XUWenjie(1．SchoolofEarthScienceandResources，Chang’anUniversity，Xi’an71005
4、4，China；2．LaboratoryofMineralizationandDynamics，Chang’anUniversity，Xi’an710054，China)Abstract：Basedonconventionalconstant—pressuremercuryinjection，castimage，scanningelectronmicroscopyandsliceobservation，combinedwithconstant—speedmercuryinjection，thispaperstudiedthemicr
5、oscopicporestructureanditsinfluenceonreservoirqualityofChang8lowpermeabilitysandstonereservoirsinJiyuanarea．TheresultshowsthatChang8reservoirsdevelopedvariousporetypesandtheporestructurecanbedividedintofourcategories．Theaveragepore-throatradius，medianpore-throatradius，
6、sortingcoeficientandmaximummercurysaturationhaveapositivecorrelationwithreservoirproperties，haveanegativecorrelationwithstructurecoeficient，andhavelittlecorelationwithaveragecoeficient，skewnessandmercurywithdrawaleficiency．Constant—speedmercuryinjectiontestfurthershows
7、thatphysicalpropertiesofChang8lowpermeabilityreservoirhavelittlecorelationwithporeparameters，andreservoirqualityaremainlycontrolledbythroat．Intheprocessoflowpermeabilityreservoirdevelopment，weshouldprotectthethroateffectivelytoachievebetterdevelopmenteffect．Keywords：lo
8、wpermeabilitysandstone；porestructurefeatures；reservoirquality；Jiyuanarea；OrdosBasin收稿日期：2014—04—26；修回13期：2014～06—12基金
