黄骅坳陷官195断块孔一段扇三角洲沉积及储集层特征
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摘要
综合利用岩心分析、岩石薄片、铸体薄片、扫描电镜、X衍射及物性测试等分析化验资料,对黄骅坳陷南部官195断块孔一段下部枣Ⅳ、枣Ⅴ油组沉积及储层特征进行系统研究,并分析了影响储层质量的主要因素。研究表明:研究区孔一段枣Ⅳ、枣Ⅴ油组为扇三角洲沉积,可识别出水下分支河道、水下分支河道间、席状砂和河口坝等4种扇三角洲前缘微相,以及辫状水道、水道侧翼和漫滩沼泽3种扇三角洲平原微相。孔一段下部枣Ⅳ、枣Ⅴ油组岩性为中砂岩、细砂岩和中-细砂岩,岩石类型以长石砂岩和岩屑质长石砂岩为主,杂基含量少,颗粒支撑;储层平均孔隙度为25.9%,平均渗透率为252.9×10~(-3)μm~2,为中孔、中高渗储层;储集空间以原生粒间孔隙为主。沉积相带和成岩作用是影响储层质量的主要控制因素:沉积方面,岩屑和胶结物的含量、粒径以及颗粒分选性影响储层的渗流性能,沉积微相对储层孔隙度影响不大,但是对渗透率影响明显,辫状水道、水下分支河道以及河口坝控制高渗储层的分布;成岩方面,机械压实作用和胶结作用使原生粒间孔隙减小,降低储层质量。
The sedimentary and reservoir characteristics of Zao-Ⅳ and Zao-Ⅴ oil reservoirs in the lower part of the first member of kongdian formation of faulted block Guan 195,southern Huanghua depression,are comprehensively analyzed by using core analysis,thin rock slice,cast thin slice,scanning electron microscope,X-ray diffraction and physical property test system research.The main factors influencing reservoir quality are analyzed.The study shows that the Zao-Ⅳ and Zao-Ⅴ oil formations in the first member of kongdian formation of the study area are fan delta sediments,which can identify four fan delta front microfacies,such as underwater branch channel,underwater branch channel,silt sand and estuary dam,and three kinds of fan delta plain microfacies of braided channel,waterway flank and floodplain.The lithology of Zao-Ⅳ and Zao-Ⅴ oil groups in the lower member of the first member of kongdian formation is medium-sandstone,fine-sandstone and medium-fine sandstone.The types of rocks are mainly feldspar sandstone and feldspathic-feldspar sandstone with less miscellaneous content and particle support.The average porosity of the reservoir is 25.9% and the average permeability is 252.9 × 10~(-3)μm~2,which is a medium-porosity and medium-high permeability reservoir.The reservoir space mainly consists of primary intergranular pores.Sedimentary facies belt and diagenesis are the main controlling factors affecting reservoir quality: in terms of sedimentation,the content of cuttings and cements,particle size and particle sorting affect the reservoir seepage performance.Sedimentary microfacies have little effect on reservoir porosity,but have obvious influence on permeability.Braided channel,underwater branch channel and estuarine dam control high permeability reservoir.In diagenesis,mechanical compaction and cementation reduce the intergranular pores and reduce the reservoir quality.
The sedimentary and reservoir characteristics of Zao-Ⅳ and Zao-Ⅴ oil reservoirs in the lower part of the first member of kongdian formation of faulted block Guan 195,southern Huanghua depression,are comprehensively analyzed by using core analysis,thin rock slice,cast thin slice,scanning electron microscope,X-ray diffraction and physical property test system research.The main factors influencing reservoir quality are analyzed.The study shows that the Zao-Ⅳ and Zao-Ⅴ oil formations in the first member of kongdian formation of the study area are fan delta sediments,which can identify four fan delta front microfacies,such as underwater branch channel,underwater branch channel,silt sand and estuary dam,and three kinds of fan delta plain microfacies of braided channel,waterway flank and floodplain.The lithology of Zao-Ⅳ and Zao-Ⅴ oil groups in the lower member of the first member of kongdian formation is medium-sandstone,fine-sandstone and medium-fine sandstone.The types of rocks are mainly feldspar sandstone and feldspathic-feldspar sandstone with less miscellaneous content and particle support.The average porosity of the reservoir is 25.9% and the average permeability is 252.9 × 10~(-3)μm~2,which is a medium-porosity and medium-high permeability reservoir.The reservoir space mainly consists of primary intergranular pores.Sedimentary facies belt and diagenesis are the main controlling factors affecting reservoir quality: in terms of sedimentation,the content of cuttings and cements,particle size and particle sorting affect the reservoir seepage performance.Sedimentary microfacies have little effect on reservoir porosity,but have obvious influence on permeability.Braided channel,underwater branch channel and estuarine dam control high permeability reservoir.In diagenesis,mechanical compaction and cementation reduce the intergranular pores and reduce the reservoir quality.
引文
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[16]宋鹍,金振奎,王晓卫,等.沉积相对储集层质量的控制作用——以黄骅坳陷王官屯油田枣Ⅱ、Ⅲ油层组为例[J].石油勘探与开发,2006,33(3):335-339.
[17]宋鹍,吴胜和.黄骅坳陷唐家河油田古近系沙河街组沙一段下部储层质量研究[J].古地理学报,2005(2):275-282
[18]苏妮娜,金振奎.黄骅坳陷北大港油田古近系碎屑岩储层成岩作用及其对储层质量的影响[J].科技导报,2009,27(9):57-64.
[19]苏妮娜,金振奎.黄骅坳陷北大港构造带沙河街组碎屑岩储层特征及其控制因素[J].中国石油大学学报(自然科学版),2009,33(6):27-31.
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[21]Ceriani A,Giulio A D,Golclstein R H,et al.Diagenesis associated with cooling during burial:An example from Lower Cretaceous reservoir sand-stones(Sirt Basin,Libya)[J].AAPG Bulletin,2002,86(9):1573-1591.
[22]中国石油天然气行业碎屑岩成岩阶段划分标准[S].SY/T 5477-2003.SY/T 5477-2003.
[23]张友,侯加根,李娜,等.黄骅坳陷塘34断块古近系沙河街组一段下部储集层特征及控制因素[J].古地理学报,2012,14(3):383-392.
[24]孟元林,高建军.扇三角洲体系沉积微相对成岩的控制作用——以辽河坳陷西部凹陷南段扇三角洲沉积体系为例[J].石油勘探与开发,2006,33(1):36-39.
[25]Wilson M D,Stanton T P.Diagenetic mechanisms of porosity and permeability reduction and enhancement[A.]Reservoir quality assessment and prediction in clastic rocks.in SEPM Short Course 30.1994.
[26]朱筱敏,米立军,钟大康,等.济阳坳陷古近系成岩作用及其对储层质量的影响[J].古地理学报,2006(3):295-305.
[27]Taylor K G and Curtis G R L,Carbunate cementation in a sequence stratigraphic framework:Upper Cretaceous sandstones,Book Cliffs,Utah-Colorado[J].Journal of Sedimentary Research,2000,70(2):36-37.
[2]焦养泉,周海民,庄新国,等.扇三角洲沉积体系及其与油气聚集关系[J].沉积学报,1998,16(1):70-75.
[3]Peter D F,Rebecca J D.Rapid development of gravelly high density currents in marine gilbert-type fan deltas,Lereto basin,Baja Califormia Sur,Mexica[J].Sedimentology,1998,45(2):331-349..
[4]Horton B K,Schmitt J G.Sedimentology of a lacustrine fan-delta system,Miocene Horse Camp Formation,Nevada,USA[J].Sedimentology,1996,43(1):133-155..
[5]Pondrelli M,Rossi A P,Marinangeli L,et al.Evolution and depositional environments of the Eberswalde fan delta,Mars[J].Icarus,2008,197(2):429-451.
[6]冯镜权,李勇,段润梅,等.黄骅坳陷孔南地区孔店组一段物源区分析[J].华南地质与矿业,2012,28(3):248-257.
[7]刘子藏,周育文,肖玉永,等.沧东-南皮凹陷地层沉积研究新认识[J].新疆地质,2009,27(4):387-389.
[8]兰亚萍,李勇,丘东洲,等.黄骅坳陷孔南地区孔店组冲积扇沉积特征及地质意义[J].沉积与特提斯地质,2009,29(4):22-26.
[9]薛林福,孙晶,陈长伟,等.黄骅坳陷孔南地区孔一、孔二段构造沉积演化[J].沉积与特提斯地质,2008,28(2):62-68.
[10]毕丽娜.王官屯地区沉积体系研究及油气藏分布规律[D].吉林大学,2010.
[11]白烨.王官屯地区沉积相及储层特征研究[D].吉林大学,2010.
[12]梁园.沧东凹陷枣园地区孔一段枣V油层组沉积相研究[D].成都理工大学,2013.
[13]李绍光,吴涛,马永祥.中国石油地质志(卷四)[M].北京:石油工业出版社,1991.
[14]张家良.沈家铺多层非均质油藏剩余油分布规律及挖潜研究[D].成都理工大学,2007.
[15]吴胜和,蔡正旗,施尚明,等.油矿地质学(第四版)[M].北京:石油工业出版社,2011:209-213.
[16]宋鹍,金振奎,王晓卫,等.沉积相对储集层质量的控制作用——以黄骅坳陷王官屯油田枣Ⅱ、Ⅲ油层组为例[J].石油勘探与开发,2006,33(3):335-339.
[17]宋鹍,吴胜和.黄骅坳陷唐家河油田古近系沙河街组沙一段下部储层质量研究[J].古地理学报,2005(2):275-282
[18]苏妮娜,金振奎.黄骅坳陷北大港油田古近系碎屑岩储层成岩作用及其对储层质量的影响[J].科技导报,2009,27(9):57-64.
[19]苏妮娜,金振奎.黄骅坳陷北大港构造带沙河街组碎屑岩储层特征及其控制因素[J].中国石油大学学报(自然科学版),2009,33(6):27-31.
[20]Salem A M,Morad S,Mato L F,et al.Diagenesis and reservoir-quality evolution of fluvial sandstone during progressive burial and up lift:Evidence from the Upper Jurassic Boipeba Member,Recocavo Basin,Northeastern Brazil[J].AAPG Bulletin,2002,84(7):1015-1519.
[21]Ceriani A,Giulio A D,Golclstein R H,et al.Diagenesis associated with cooling during burial:An example from Lower Cretaceous reservoir sand-stones(Sirt Basin,Libya)[J].AAPG Bulletin,2002,86(9):1573-1591.
[22]中国石油天然气行业碎屑岩成岩阶段划分标准[S].SY/T 5477-2003.SY/T 5477-2003.
[23]张友,侯加根,李娜,等.黄骅坳陷塘34断块古近系沙河街组一段下部储集层特征及控制因素[J].古地理学报,2012,14(3):383-392.
[24]孟元林,高建军.扇三角洲体系沉积微相对成岩的控制作用——以辽河坳陷西部凹陷南段扇三角洲沉积体系为例[J].石油勘探与开发,2006,33(1):36-39.
[25]Wilson M D,Stanton T P.Diagenetic mechanisms of porosity and permeability reduction and enhancement[A.]Reservoir quality assessment and prediction in clastic rocks.in SEPM Short Course 30.1994.
[26]朱筱敏,米立军,钟大康,等.济阳坳陷古近系成岩作用及其对储层质量的影响[J].古地理学报,2006(3):295-305.
[27]Taylor K G and Curtis G R L,Carbunate cementation in a sequence stratigraphic framework:Upper Cretaceous sandstones,Book Cliffs,Utah-Colorado[J].Journal of Sedimentary Research,2000,70(2):36-37.