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1、學(xué)兔兔www.xuetutu.com天熱乞比第32卷第4期0IL&GASGEOLOGY2011年8月文章編號：0253—9985(2011)04—0568—09泌陽凹陷陸相頁巖油氣成藏條件陳祥，王敏，嚴(yán)永新，章新文，羅曦，張永華(中國石化河南油田分公司，河南南陽473132)摘要：泌陽凹陷AS1井陸相頁巖儲層壓裂后獲得最高日產(chǎn)油4．68m、天然氣90m，從而在我國東部陸相第三系斷陷湖盆頁巖油氣領(lǐng)域取得了重要突破。頁巖油與頁巖氣通常為共生關(guān)系，文章將重點(diǎn)應(yīng)用地質(zhì)實(shí)驗(yàn)、地質(zhì)錄井、測井等資料對泌陽凹陷深凹區(qū)AS1井井區(qū)的頁巖分布特征、地化特征、儲集特征及保存條件進(jìn)行
2、分析。研究表明AS1井2450—2510Ill主力頁巖段單層厚度大，分布范圍廣，有機(jī)碳含量較高，熱演化程度鏡質(zhì)體反射率值一般在0．57％一0．72％，表明烴源巖處于成熟階段和生烴高峰期。含油氣頁巖錄井氣測異常明顯，測井曲線上具有“三高兩低”的特征；頁巖儲集空間類型發(fā)育微孔隙、微裂縫，儲集性能較好；儲層石英等脆性礦物含量高，易于頁巖油儲層壓裂改造。采用容積法對泌陽凹陷深凹區(qū)頁巖油氣資源量進(jìn)行計算，得出泌陽凹陷頁巖油氣資源量5．4X10t，勘探潛力較大，勘探前景良好。關(guān)鍵詞：有機(jī)質(zhì)豐度；熱成熟度；成藏條件；陸相頁巖油氣；泌陽凹陷中圖分類號：TEl21．1文獻(xiàn)標(biāo)識碼
3、：AAccumulationconditionsforcontinentalshaleoilandgasintheBiyangDepressionChenXiang，WangMin，YanYongxin，ZhangXinwen，LuoXiandZhangYonghua(SINOPECHenanOilfieldCompany，Nanyang，Henan473132，China)Abstract：TheAS1WellinthecontinentalshalereservoirinBiyangDepressionreachedapeakproductionofoil
4、4．68m／dandgas90m／dafterhydraulicfracturingstimulation．markingamajorbreakthroughinshaleoil&gasexplorationanddevelopmentintheEogenecontinentalfaultedbasinsineasternChina．Oilinshaleisoftensymbioticwithgas．Thedatagatheredfromgeologicalexperiments，welllogging，etc．，areusedtoanalyzeshaledi
5、stribution，organicgeochemicalfeatures，reservoircharacteristicsandsealingconditionsofAS1．Resultsshowthatmajorshalelayerswithintheintervalof2450——2510minwellAS1featureingreatthicknessandwidedistributionofasinglelayer，highTOCandaRwithin0．57％一0．72％，indicatingthatthesourcerocksarematurit
6、yandinpeakhydrocarbongeneration．R。Gasloggingofshaleoil&gaslayersshowabnormalresultsandtheloggingcurvepresentspecialfeaturesof“3highpointsand2lowpoints”．Shalelayerscontainwell—devel—opedmicro—poresandfissures，whichcanbeexcellentreservoirspace．Thelayersarealsorichinbrittleminer—alslik
7、equarts，whichisfavorableforfracturing．Afterassessmentbyusingthevolumetricmethod，webelievethattheDepressionhasgreatshaleoilandgasexplorationpotentialfabout0．54billiontonsofshaleoil&gas)．Keywords：Organicmatterabundance；thermalevolution；accumulationcondition；continentalshaleoilandgas；B
8、iyangDepression頁巖油氣
