鄂尔多斯盆地合水地区长8_1储层特征与评价
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摘要
利用岩心观察、常规物性、扫描电镜、铸体薄片、压汞等分析、测试资料,系统研究了鄂尔多斯盆地合水地区长8_1储层特征,建立了储层分类标准。结果表明,研究区长8_1储层岩石类型以岩屑长石砂岩为主,长石岩屑砂岩和长石砂岩次之,储集空间主要为粒间孔和长石溶孔,孔隙结构复杂,非均质性较强,属于低孔-特低孔、特低渗-超低渗储层。优选储层物性、微观孔隙结构等参数,将研究区长8_1储层划分为3种类型,其中Ⅱ类储层分布面积最广,是下一步勘探和开发的有利目标。
Based on the data such as core observation,and analysis of conventional physical properties,scanning electron microscope,casting thin sections,mercury-injection and logging interpretation,the characteristics of the Chang 8_1 Reservoir in Heshui Area of the Ordos Basin are systematically studied,and the standard of reservoir classification is established.The results show that the rock type of Chang 8_1 reservoir is mainly characterized by lithic feldspathic,and secondly by feldspathic lithic and feldspathic sandstones.The reservoir space is dominated by intergranular pores and feldspar dissolving holes,where pore structure is complex with strong heterogeneity,it belongs to reservoir with low porosity-extra low porosity,extra-low permeability and ultra-low permeability.According to the optimization of parameters such as reservoir physical property and micro-pore structure,Chang 8_1 Reservoir can be divided into three types,in which TypeⅡreservoir has widest distribution,and it is the favorable target for next exploration and development.
Based on the data such as core observation,and analysis of conventional physical properties,scanning electron microscope,casting thin sections,mercury-injection and logging interpretation,the characteristics of the Chang 8_1 Reservoir in Heshui Area of the Ordos Basin are systematically studied,and the standard of reservoir classification is established.The results show that the rock type of Chang 8_1 reservoir is mainly characterized by lithic feldspathic,and secondly by feldspathic lithic and feldspathic sandstones.The reservoir space is dominated by intergranular pores and feldspar dissolving holes,where pore structure is complex with strong heterogeneity,it belongs to reservoir with low porosity-extra low porosity,extra-low permeability and ultra-low permeability.According to the optimization of parameters such as reservoir physical property and micro-pore structure,Chang 8_1 Reservoir can be divided into three types,in which TypeⅡreservoir has widest distribution,and it is the favorable target for next exploration and development.
引文
[1]邓宏文,王洪亮,翟爱军,等.中国陆源碎屑盆地层序地层与储层展布[J].石油与天然气地质,1999,20(2):12~18.
[2]杨华.鄂尔多斯盆地三叠系延长组沉积体系及含油性研究[D].成都:成都理工大学,2004.
[3]李思田,林畅松,解习农,等.大型陆相盆地层序地层学研究──以鄂尔多斯中生代盆地为例[J].地学前缘,1995,2(4):133~136,148.
[4]郑希民,宋广寿,王多云,等.陕甘宁盆地陇东地区长8油组厚层非均质砂体的沉积学解剖[J].沉积学报,2003,21(2):272~277.
[5]杨友运,张蓬勃,张忠义.鄂尔多斯盆地西峰油田长8油组辫状河三角洲沉积特征与层序演化[J].地质科技情报,2005,24(1):45~48.
[6]邓秀芹,付金华,姚泾利,等.鄂尔多斯盆地中及上三叠统延长组沉积相与油气勘探的突破[J].古地理学报,2011,13(4):443~455.
[7]张志强,郑军卫.低渗透油气资源勘探开发技术进展[J].地球科学进展,2009,24(08):854~864.
[8]李海燕,岳大力,张秀娟.苏里格气田低渗透储层微观孔隙结构特征及其分类评价方法[J].地学前缘,2012,19(2):133~140.
[9]李凤杰,王多云,张庆龙,等.鄂尔多斯盆地陇东地区延长组沉积相特征与层序地层分析[J].沉积学报,2006,24(4):549~554.
[10]陈占坤,吴亚生,罗晓容,等.鄂尔多斯盆地陇东地区长8段古输导格架恢复[J].地质学报,2006,80(5):718~723,785.
[11]罗静兰,李忠兴,史成恩,等.鄂尔多斯盆地西南部上三叠统延长组长8、长6油层组的沉积体系与物源方向[J].地质通报,2008,27(1):101~111.
[12]杨华,梁晓伟,牛小兵,等.陆相致密油形成地质条件及富集主控因素——以鄂尔多斯盆地三叠系延长组7段为例[J].石油勘探与开发,2017,44(01):12~20.
[13]SY/T6285—1997.油气储层评价方法[S].
[14]王新民,郭彦如,付金华,等.鄂尔多斯盆地延长组长8段相对高孔渗砂岩储集层的控制因素分析[J].石油勘探与开发,2005,32(2):35~38.
[15]高永亮,文志刚.鄂尔多斯盆地合水油田长8油层组储层宏观非均质特征研究[J].长江大学学报(自然科学版),2016,13(5):10~14,3.
[16]周翔,何生,刘萍,等.鄂尔多斯盆地代家坪地区长6致密油储层孔隙结构特征及分类评价[J].地学前缘,2016,23(3):253~265.
[17]刁帆,文志刚.鄂尔多斯盆地胡尖山油田延长组长4+52储层特征及综合评价[J].岩性油气藏,2011,23(2):53~58,79.
[18]赵靖舟,吴少波,武富礼.论低渗透储层的分类与评价标准——以鄂尔多斯盆地为例[J].岩性油气藏,2007,19(3):28~31,53.
[2]杨华.鄂尔多斯盆地三叠系延长组沉积体系及含油性研究[D].成都:成都理工大学,2004.
[3]李思田,林畅松,解习农,等.大型陆相盆地层序地层学研究──以鄂尔多斯中生代盆地为例[J].地学前缘,1995,2(4):133~136,148.
[4]郑希民,宋广寿,王多云,等.陕甘宁盆地陇东地区长8油组厚层非均质砂体的沉积学解剖[J].沉积学报,2003,21(2):272~277.
[5]杨友运,张蓬勃,张忠义.鄂尔多斯盆地西峰油田长8油组辫状河三角洲沉积特征与层序演化[J].地质科技情报,2005,24(1):45~48.
[6]邓秀芹,付金华,姚泾利,等.鄂尔多斯盆地中及上三叠统延长组沉积相与油气勘探的突破[J].古地理学报,2011,13(4):443~455.
[7]张志强,郑军卫.低渗透油气资源勘探开发技术进展[J].地球科学进展,2009,24(08):854~864.
[8]李海燕,岳大力,张秀娟.苏里格气田低渗透储层微观孔隙结构特征及其分类评价方法[J].地学前缘,2012,19(2):133~140.
[9]李凤杰,王多云,张庆龙,等.鄂尔多斯盆地陇东地区延长组沉积相特征与层序地层分析[J].沉积学报,2006,24(4):549~554.
[10]陈占坤,吴亚生,罗晓容,等.鄂尔多斯盆地陇东地区长8段古输导格架恢复[J].地质学报,2006,80(5):718~723,785.
[11]罗静兰,李忠兴,史成恩,等.鄂尔多斯盆地西南部上三叠统延长组长8、长6油层组的沉积体系与物源方向[J].地质通报,2008,27(1):101~111.
[12]杨华,梁晓伟,牛小兵,等.陆相致密油形成地质条件及富集主控因素——以鄂尔多斯盆地三叠系延长组7段为例[J].石油勘探与开发,2017,44(01):12~20.
[13]SY/T6285—1997.油气储层评价方法[S].
[14]王新民,郭彦如,付金华,等.鄂尔多斯盆地延长组长8段相对高孔渗砂岩储集层的控制因素分析[J].石油勘探与开发,2005,32(2):35~38.
[15]高永亮,文志刚.鄂尔多斯盆地合水油田长8油层组储层宏观非均质特征研究[J].长江大学学报(自然科学版),2016,13(5):10~14,3.
[16]周翔,何生,刘萍,等.鄂尔多斯盆地代家坪地区长6致密油储层孔隙结构特征及分类评价[J].地学前缘,2016,23(3):253~265.
[17]刁帆,文志刚.鄂尔多斯盆地胡尖山油田延长组长4+52储层特征及综合评价[J].岩性油气藏,2011,23(2):53~58,79.
[18]赵靖舟,吴少波,武富礼.论低渗透储层的分类与评价标准——以鄂尔多斯盆地为例[J].岩性油气藏,2007,19(3):28~31,53.