二连盆地乌里雅斯太凹陷H区阿尔善油层组储层特征及影响因素
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摘要
为了研究二连盆地乌里雅斯太凹陷H区阿尔善油层组储层特征及影响因素,采用储层岩心观察、铸体薄片、扫描电镜、常规压汞等测试资料,对储层岩石学特征、孔隙特征、物性特征、沉积作用和成岩作用进行了分析,结果表明阿尔善油层组为近源、快速堆积,砂岩类型主要是长石质岩屑砂岩和岩屑质长石砂岩,表现为胶结物含量高、结构成熟度低和成分成熟度低的"一高两低"特点。储层受碎屑粒径、压实程度、碳酸盐含量的影响,主要发育中-细喉道,储集空间以残余粒间孔和粒间溶孔为主,物性分析判断为低孔-低渗储层。研究区最好的储层为扇三角洲前缘水下分流河道砂,其次为远端席状砂和河口坝砂。研究区目的层原始孔渗分布主要受沉积作用控制;成岩作用中胶结作用对储层既有部分破坏作用又有部分改善作用,压实作用主要起破坏作用,溶解作用主要起改善作用。
In order to research the reservoir characteristics and influential factors of Aershan reservoir ofthe Wuliyasitai Depression in H area,this study core,utilizes casting thin sections,scanning electron microscopy analysis of the test data,etc.to determine the reservoir rocks,pore characteristics,physical characteristics,sedimentation and diagenesis of the reservoir.The results show that the sand-bodies of Aershan reservoir consist of feldspathic lit arenite and lithic feldspar with high cement content,low compositional maturity and low maturity structure,which are originated from proximal and rapid accumulation.The reservoir is of ultra-low porosity and permeability reservoir type.Big-middle throats are well developed and the reservoir spaces are dominated by residual intergranular pores and dissolved intergranular pores,and their development are controlled by particle size,compaction,cementation,and content of carbonates.The favorable reservoir is mainly distributed in the sandstones of the subaqueous distributary channel of fan delta front,followed by fine sandstones in sand sheet and estuarine deposit.Diagenesis has an important influence on the reservoir characteristics.The sedimentary action of the study area controls the original pores and seepage distribution of the reservoir.Diagenesis can destroy and improve the reservoir.Compaction mainly destroys the reservoir,while the dissolution is the key factor to improve the quality of reservoir.Cementation has double action to reform the reservoir.
In order to research the reservoir characteristics and influential factors of Aershan reservoir ofthe Wuliyasitai Depression in H area,this study core,utilizes casting thin sections,scanning electron microscopy analysis of the test data,etc.to determine the reservoir rocks,pore characteristics,physical characteristics,sedimentation and diagenesis of the reservoir.The results show that the sand-bodies of Aershan reservoir consist of feldspathic lit arenite and lithic feldspar with high cement content,low compositional maturity and low maturity structure,which are originated from proximal and rapid accumulation.The reservoir is of ultra-low porosity and permeability reservoir type.Big-middle throats are well developed and the reservoir spaces are dominated by residual intergranular pores and dissolved intergranular pores,and their development are controlled by particle size,compaction,cementation,and content of carbonates.The favorable reservoir is mainly distributed in the sandstones of the subaqueous distributary channel of fan delta front,followed by fine sandstones in sand sheet and estuarine deposit.Diagenesis has an important influence on the reservoir characteristics.The sedimentary action of the study area controls the original pores and seepage distribution of the reservoir.Diagenesis can destroy and improve the reservoir.Compaction mainly destroys the reservoir,while the dissolution is the key factor to improve the quality of reservoir.Cementation has double action to reform the reservoir.
引文
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[15]王伟,朱玉双,牛小兵,等.鄂尔多斯盆地姬塬地区长6储层微观孔隙结构及控制因素[J].地质科技情报,2013,32(3):118-124.
[16]姜涛,朱玉双,杨克文,等.姬塬油田罗1井区长81储层特征及影响因素分析[J].西北大学学报:自然科学版,2011,41(6):1031-1037.
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[18]Kim J C,Lee Y I,Hisada K.Depositional and compositional controls on sandstone diagenesis,the Tetori Group(Middle Jurassic-Early Cretaceous),central Japan[J].Sedimentary Geology,2007,195(3):183-202.
[19]Hammer E,Mork M B E,Naess A.Facies controls on the distribution of diagenesis and compaction in fluvial-deltaic deposits[J].Marine and Petroleum Geology,2010,27(8):1737-1751.
[20]Poursoltania M R,Gibling M R.Composition,porosity,and reservoir potential of the Middle Jurassic Kashafrud Formation,northeast Iran[J].Marine and Petroleum Geology,2011,28(5):1092-1110.
[21]Morad S,Al-Ramadan K,Ketzer J M,et al.The impact of diagenesis on the heterogeneity of sandstone reservoirs:A review of the role of depositional facies and sequence stratigraphy[J].AAPG Bulletin,2010,94(8):1267-1309.
[22]Karim A,Pe-Piper G,Piper D J W.Controls on diagenesis of Lower Cretaceous reservoir sandstones in the western Sable Subbasin,offshore Nova Scotia[J].Sedimentary Geology,2010,224(1/4):65-83.
[23]Umara M,Friis H,Khan A S,et al.The effects of diagenesis on the reservoir characters in sandstones of the Late Cretaceous Pab Formation,Kirthar Fold Belt,southern Pakistan[J].Journal of Asian Earth Sciences,2011,40(2):622-635.
[24]Shanley K W,Cluff R M,Robinson J W.Factors controlling prolific gas production from low permeability sandstone reservoirs:Implications for resource assessment,prospect development,and risk analysis[J].AAPG Bulletin,2004,88(8):1083-1121.
[25]Anjos S M C,De Ros L F,De Souza It S,et al.Depositional and diagenetic control on the reservoir quality of Lower Cretaceous Pendencia sandstones,Potiguar rift basin,Brazil[J].AAPG Bulletin,2000,84(11):1719-1742.
[26]Beard D C,Weyl P K.Influence of texture on porosity and permeability of unconsolidated sand[J].AAPG Bulletin,1973,57(2):349-369.
[27]Scherer M.Parameters influencing porosity in sandstones:A model for sandstone porosity predication[J].AAPG Bulletin,1987,71(5):485-491.
[28]陈大友,朱玉双,夏勇,等.鄂尔多斯盆地高桥地区盒8段砂岩储层致密成因[J].沉积学报,2015,33(6):1217-1223.
[2]陈亦寒.二连盆地乌里雅斯太凹陷南洼槽储层沉积学研究[D].北京:中国地质大学(北京),2009.
[3]邓毅林,王天琦,曹正林,等.二连盆地乌里雅斯太凹陷下白垩统湖底扇沉积特征及成因分析[J].天然气地球科学,2010,21(5):787-792.
[4]陈亦寒,杨德相,李振远,等.乌里雅斯太凹陷南洼槽下白垩统储集性能影响因素分析及其油气地质意义[J].石油天然气学报,2011,33(9):17-22.
[5]崔周旗,李文厚,吴健平,等.乌里雅斯太凹陷斜坡带湖底扇相砾岩体沉积特征与隐蔽油藏勘探[J].沉积学报,2005,23(1):21-28.
[6]蔺连第,朗艳,金蕙,等.二连盆地乌里雅斯太凹陷早白垩世湖底扇[J].石油勘探与开发,2005,32(3):27-32.
[7]王有智,张卫海.二连盆地乌里雅斯太凹陷南洼断裂调节构造-坡折带特征及其对储集层分布的控制[J].古地理学报,2009,10(5):573-580.
[8]肖伟,刘震,党虎强,等.二连盆地乌里雅斯太凹陷南洼槽油气运移特征[J].新疆石油地质,2004,25(4);372-375.
[9]易士威,王元杰,钱铮,等.二连盆地乌里雅斯太凹陷油气成藏模式及分布特征[J].石油学报,2006,27(3):27-31.
[10]胡先庆,施雨新,唐闻斌,等.二连盆地乌里雅斯太凹陷特低渗透储层特征[J].科技资讯,2010(11):12.
[11]池继立.二连盆地高力罕凹陷下白垩统碎屑岩成岩作用及其对储层物性的影响[J].辽宁化工,2016,45(9):1224-1226.
[12]周玉娟,高海仁,吕敏,等.二连盆地阿拉达布斯凹陷南洼槽阿尔善组储层特征研究[J].地下水,2015,37(1):191-193.
[13]梁官忠,姜振学,刘忠,等.二连盆地阿南低渗透火山碎屑砂岩油藏储层特征及其对开发的影响[J].石油与天然气地质,2013,34(1):48-57.
[14]魏巍,朱筱敏,谈明轩,等.查干凹陷下白垩统扇三角洲相储层特征及物性影响因素[J].石油与天然气地质,2015,36(3):447-455.
[15]王伟,朱玉双,牛小兵,等.鄂尔多斯盆地姬塬地区长6储层微观孔隙结构及控制因素[J].地质科技情报,2013,32(3):118-124.
[16]姜涛,朱玉双,杨克文,等.姬塬油田罗1井区长81储层特征及影响因素分析[J].西北大学学报:自然科学版,2011,41(6):1031-1037.
[17]Tobin R C,McClain T,Lieber R B,et al.Reservoir quality modeling of tight-gas sands in Wamsutter Field:Integration of diagenesis,petroleum systems,and production data[J].AAPG Bulletin,2010,94(8):1229-1266.
[18]Kim J C,Lee Y I,Hisada K.Depositional and compositional controls on sandstone diagenesis,the Tetori Group(Middle Jurassic-Early Cretaceous),central Japan[J].Sedimentary Geology,2007,195(3):183-202.
[19]Hammer E,Mork M B E,Naess A.Facies controls on the distribution of diagenesis and compaction in fluvial-deltaic deposits[J].Marine and Petroleum Geology,2010,27(8):1737-1751.
[20]Poursoltania M R,Gibling M R.Composition,porosity,and reservoir potential of the Middle Jurassic Kashafrud Formation,northeast Iran[J].Marine and Petroleum Geology,2011,28(5):1092-1110.
[21]Morad S,Al-Ramadan K,Ketzer J M,et al.The impact of diagenesis on the heterogeneity of sandstone reservoirs:A review of the role of depositional facies and sequence stratigraphy[J].AAPG Bulletin,2010,94(8):1267-1309.
[22]Karim A,Pe-Piper G,Piper D J W.Controls on diagenesis of Lower Cretaceous reservoir sandstones in the western Sable Subbasin,offshore Nova Scotia[J].Sedimentary Geology,2010,224(1/4):65-83.
[23]Umara M,Friis H,Khan A S,et al.The effects of diagenesis on the reservoir characters in sandstones of the Late Cretaceous Pab Formation,Kirthar Fold Belt,southern Pakistan[J].Journal of Asian Earth Sciences,2011,40(2):622-635.
[24]Shanley K W,Cluff R M,Robinson J W.Factors controlling prolific gas production from low permeability sandstone reservoirs:Implications for resource assessment,prospect development,and risk analysis[J].AAPG Bulletin,2004,88(8):1083-1121.
[25]Anjos S M C,De Ros L F,De Souza It S,et al.Depositional and diagenetic control on the reservoir quality of Lower Cretaceous Pendencia sandstones,Potiguar rift basin,Brazil[J].AAPG Bulletin,2000,84(11):1719-1742.
[26]Beard D C,Weyl P K.Influence of texture on porosity and permeability of unconsolidated sand[J].AAPG Bulletin,1973,57(2):349-369.
[27]Scherer M.Parameters influencing porosity in sandstones:A model for sandstone porosity predication[J].AAPG Bulletin,1987,71(5):485-491.
[28]陈大友,朱玉双,夏勇,等.鄂尔多斯盆地高桥地区盒8段砂岩储层致密成因[J].沉积学报,2015,33(6):1217-1223.
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