鄂尔多斯盆地西南部延长组长_7段致密油地质“甜点”评价
|
摘要
针对鄂尔多斯盆地西南部延长组长_7段致密油富集规律不清,致密油"甜点"分布尚未进行有效评价等问题,通过单因素地质参数统计手段,结合已知致密油油藏分布规律,深入分析延长组致密油成藏条件主控因素,预测致密油"甜点"有利区。研究表明,长_7段地质"甜点"主要评价要素为烃源岩、储集层、沉积相、裂缝发育程度及源储匹配性,预测研究区长_7段长官庙、富县等9个致密油勘探"甜点"目标,并在此基础上提出鄂尔多斯盆地大型坳陷湖盆致密油"甜点"分布模式。该研究对鄂尔多斯盆地西南部致密油勘探降低勘探风险和勘探成本等有重要的现实指导意义。
In order to clarify the tight oil enrichment pattern and the tight oil "sweet-spot" distribution in the Yanchang Formation Chang_(-7) Member of southwestern Ordos Basin,single-factor geological parameter statistic is used to further analyze the tight oil accumulation condition and main-controlling factors and predict the favorable zone of tight oil "sweet-spot" by combining with the tight oil reservoir distribution. Research indicates that the dominant indicators to evaluate the geological "sweet-spot" in the Chang_(-7) Member include source-rock,reservoir,sedimentary facies,fracture development level and source-reservoir configuration. 9 "sweet-spot" zones for tight oil exploration were predicted in the Chang_(-7) Member,including Changguanmiao,Fuxian,etc. The large-scale depression lake basin tight oil "sweet-spot" distribution pattern in Ordos Basin is proposed based on this understanding. This research could provide certain practical guidance for reducing the tight oil exploration risk and cost in southwestern Ordos Basin.
In order to clarify the tight oil enrichment pattern and the tight oil "sweet-spot" distribution in the Yanchang Formation Chang_(-7) Member of southwestern Ordos Basin,single-factor geological parameter statistic is used to further analyze the tight oil accumulation condition and main-controlling factors and predict the favorable zone of tight oil "sweet-spot" by combining with the tight oil reservoir distribution. Research indicates that the dominant indicators to evaluate the geological "sweet-spot" in the Chang_(-7) Member include source-rock,reservoir,sedimentary facies,fracture development level and source-reservoir configuration. 9 "sweet-spot" zones for tight oil exploration were predicted in the Chang_(-7) Member,including Changguanmiao,Fuxian,etc. The large-scale depression lake basin tight oil "sweet-spot" distribution pattern in Ordos Basin is proposed based on this understanding. This research could provide certain practical guidance for reducing the tight oil exploration risk and cost in southwestern Ordos Basin.
引文
[1]贾承造,郑民,张永峰.中国非常规油气资源与勘探开发前景[J].石油勘探与开发,2012,39(2):129-136.
[2]任战利,李文厚,梁宇,等.鄂尔多斯盆地东南部延长组致密油成藏条件及主控因素[J].石油与天然气地质,2014,35(2):190-198.
[3]姚泾利,赵彦德,邓秀芹,等.鄂尔多斯盆地延长组致密油成藏控制因素[J].吉林大学学报(地球科学版),2015,45(4):983-992.
[4]罗晓容,张刘平,杨华,等.鄂尔多斯盆地陇东地区长81段低渗油藏成藏过程[J].石油与天然气地质,2010,31(6):770-778.
[5]邹才能,陶士振,袁选俊,等.“连续型”油气藏及其在全球的重要性:成藏、分布与评价[J].石油勘探与开发,2009,36(6):669-682.
[6]XU M,HE Z,YIN W,et al.Characteristics and main controlling factors of tight sandstone reservoirs in the 8th member of the Yanchang Formation in Zhenjing area,Ordos Basin[J].Oil&Gas Geology,2015,36(2):240-247.
[7]付金华,喻建,徐黎明,等.鄂尔多斯盆地致密油勘探开发新进展及规模富集可开发主控因素[J].中国石油勘探,2015,20(5):9-19.
[8]SUN L,TUO J,ZHANG M,et al.Formation and development of the pore structure in Chang7member oil-shale from Ordos Basin during organic matter evolution induced by hydrous pyrolysis[J].Fuel,2015,158(1):549-557.
[9]杨华,刘显阳,张才利,等.鄂尔多斯盆地三叠系延长组低渗透岩性油藏主控因素及其分布规律[J].岩性油气藏,2007,19(3):1-6.
[10]YUAN X,LIN S,LIU Q,et al.Lacustrine fine-grained sedimentary features and organicrich shale distribution pattern:a case study of Chang7Member of Triassic Yanchang Formation in Ordos Basin,NW China[J].Petroleum Exploration&Development,2015,42(1):37-47.
[11]ZHANG Z,CHEN S,YANG H,et al.Tight oil accumulation mechanisms of Triassic Yanchang Formation Chang7Member,Ordos Basin,China[J].Petroleum Exploration&Development,2016,43(4):644-654.
[12]杨华,李士祥,刘显阳,等.鄂尔多斯盆地致密油、页岩油特征及资源潜力[J].石油学报,2013,34(1):1-11.
[13]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(1):12-20.
[14]邹才能,杨智,张国生,等.常规-非常规油气“有序聚集”理论认识及实践意义[J].石油勘探与开发,2014,41(1):14-27.
[15]吴浩,牛小兵,张春林,等.鄂尔多斯盆地陇东地区长7段致密油储层可动流体赋存特征及影响因素[J].地质科技情报,2015,34(3):120-125.
[16]吴康军,刘洛夫,徐正建,等.鄂尔多斯盆地长7段致密油成藏物性下限研究[J].石油实验地质,2016,38(1):63-69.
[17]薛永超,田婋丰.鄂尔多斯盆地长7致密油藏特征[J].特种油气藏,2014,21(3):111-115.
[18]王付斌,尹伟,陈纯芳.鄂尔多斯盆地红河油田长8油层组致密砂岩储层“甜点”成因机制[J].石油实验地质,2017,39(4):484-490.
[19]庞正炼,邹才能,陶士振,等.中国致密油形成分布与资源潜力评价[J].中国工程科学,2012,14(7):60-67.
[20]张妮妮,刘洛夫,苏天喜,等.鄂尔多斯盆地延长组长7段与威利斯顿盆地Bakken组致密油形成条件的对比及其意义[J].现代地质,2013,27(5):1120-1130.
[21]徐黎明,周立发,张义楷,等.鄂尔多斯盆地构造应力场特征及其构造背景[J].大地构造与成矿学,2006,30(4):455-462.
[2]任战利,李文厚,梁宇,等.鄂尔多斯盆地东南部延长组致密油成藏条件及主控因素[J].石油与天然气地质,2014,35(2):190-198.
[3]姚泾利,赵彦德,邓秀芹,等.鄂尔多斯盆地延长组致密油成藏控制因素[J].吉林大学学报(地球科学版),2015,45(4):983-992.
[4]罗晓容,张刘平,杨华,等.鄂尔多斯盆地陇东地区长81段低渗油藏成藏过程[J].石油与天然气地质,2010,31(6):770-778.
[5]邹才能,陶士振,袁选俊,等.“连续型”油气藏及其在全球的重要性:成藏、分布与评价[J].石油勘探与开发,2009,36(6):669-682.
[6]XU M,HE Z,YIN W,et al.Characteristics and main controlling factors of tight sandstone reservoirs in the 8th member of the Yanchang Formation in Zhenjing area,Ordos Basin[J].Oil&Gas Geology,2015,36(2):240-247.
[7]付金华,喻建,徐黎明,等.鄂尔多斯盆地致密油勘探开发新进展及规模富集可开发主控因素[J].中国石油勘探,2015,20(5):9-19.
[8]SUN L,TUO J,ZHANG M,et al.Formation and development of the pore structure in Chang7member oil-shale from Ordos Basin during organic matter evolution induced by hydrous pyrolysis[J].Fuel,2015,158(1):549-557.
[9]杨华,刘显阳,张才利,等.鄂尔多斯盆地三叠系延长组低渗透岩性油藏主控因素及其分布规律[J].岩性油气藏,2007,19(3):1-6.
[10]YUAN X,LIN S,LIU Q,et al.Lacustrine fine-grained sedimentary features and organicrich shale distribution pattern:a case study of Chang7Member of Triassic Yanchang Formation in Ordos Basin,NW China[J].Petroleum Exploration&Development,2015,42(1):37-47.
[11]ZHANG Z,CHEN S,YANG H,et al.Tight oil accumulation mechanisms of Triassic Yanchang Formation Chang7Member,Ordos Basin,China[J].Petroleum Exploration&Development,2016,43(4):644-654.
[12]杨华,李士祥,刘显阳,等.鄂尔多斯盆地致密油、页岩油特征及资源潜力[J].石油学报,2013,34(1):1-11.
[13]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(1):12-20.
[14]邹才能,杨智,张国生,等.常规-非常规油气“有序聚集”理论认识及实践意义[J].石油勘探与开发,2014,41(1):14-27.
[15]吴浩,牛小兵,张春林,等.鄂尔多斯盆地陇东地区长7段致密油储层可动流体赋存特征及影响因素[J].地质科技情报,2015,34(3):120-125.
[16]吴康军,刘洛夫,徐正建,等.鄂尔多斯盆地长7段致密油成藏物性下限研究[J].石油实验地质,2016,38(1):63-69.
[17]薛永超,田婋丰.鄂尔多斯盆地长7致密油藏特征[J].特种油气藏,2014,21(3):111-115.
[18]王付斌,尹伟,陈纯芳.鄂尔多斯盆地红河油田长8油层组致密砂岩储层“甜点”成因机制[J].石油实验地质,2017,39(4):484-490.
[19]庞正炼,邹才能,陶士振,等.中国致密油形成分布与资源潜力评价[J].中国工程科学,2012,14(7):60-67.
[20]张妮妮,刘洛夫,苏天喜,等.鄂尔多斯盆地延长组长7段与威利斯顿盆地Bakken组致密油形成条件的对比及其意义[J].现代地质,2013,27(5):1120-1130.
[21]徐黎明,周立发,张义楷,等.鄂尔多斯盆地构造应力场特征及其构造背景[J].大地构造与成矿学,2006,30(4):455-462.