鄂尔多斯盆地南部煤系地层中致密砂岩成岩作用及储层特征研究
|
摘要
通过观察鄂尔多斯煤系地层的镜下薄片,以苏里格地区山西组1段与石盒子组8段为例,对盆地南部煤系地层中致密砂岩的储层特征及成岩作用进行研究,结果表明成岩作用对储层特征具有重要影响。研究区主要岩石类型为岩屑石英砂岩,成岩作用类型主要是压实作用、胶结作用、溶蚀作用等,结合区域成岩演化序列,认为研究层段已经进入到中成岩阶段B期。通过对砂岩的储层物性参数进行对比分析,发现不同的成岩作用对储层物性特征有不同的影响作用,压实作用、压溶作用及胶结作用在成岩作用早期破坏了储层孔隙结构,使储集物性变差,进入成岩作用中期之后,溶蚀作用开始产生次生孔隙,储层物性得到改善。
This paper,based on thin sections of coal-bearing formation of Ordos basin,studies the reservoir features and diagenesis of compact sandstone of coal-bearing formation of southern Ordos basin on cases of Memer 1 of Shanxi formation and Member 8 of Shihezi formation,Sulige area,and concludes that diagenesis largely influences reservoir.In the study area,the rock is mainly debris quartz sandstone with diagenesis of compaction, cementation and dissolution. It is concluded that the members has reached stage B of medium diagenesis combined with regional diagenesis evolution series. Comparison shows reservoir varies with diagenesis that compaction,cementation and dissolution destroy the pore structure in the early diagenesis,leading to a poor reservoir feature,and dissolution starts to produce secondary pores to improve the reservoir in the medium diagenesis.
This paper,based on thin sections of coal-bearing formation of Ordos basin,studies the reservoir features and diagenesis of compact sandstone of coal-bearing formation of southern Ordos basin on cases of Memer 1 of Shanxi formation and Member 8 of Shihezi formation,Sulige area,and concludes that diagenesis largely influences reservoir.In the study area,the rock is mainly debris quartz sandstone with diagenesis of compaction, cementation and dissolution. It is concluded that the members has reached stage B of medium diagenesis combined with regional diagenesis evolution series. Comparison shows reservoir varies with diagenesis that compaction,cementation and dissolution destroy the pore structure in the early diagenesis,leading to a poor reservoir feature,and dissolution starts to produce secondary pores to improve the reservoir in the medium diagenesis.
引文
[1]曹代勇,姚征,李靖.煤系非常规天然气评价研究现状与发展趋势[J].煤炭科学技术,2014,42(1):89-92,105
[2]李志军,许兴基.鄂尔多斯盆地东缘石炭二叠系煤层气资源[J].资源·产业,2000(12):17-18
[3]王佟,王庆伟,傅雪海.煤系非常规天然气的系统研究及其意义[J].煤田地质与勘探,2014,42(1):24-27
[4]杨华,刘新社.鄂尔多斯盆地古生界煤成气勘探进展[J].石油勘探与开发,2014,41(2):129-137
[5]曹代勇,刘亢,刘金城,等.鄂尔多斯盆地西缘煤系非常规气共生组合特征[J].煤炭学报,2016,41(2):277-285
[6]王明健,何登发,包洪平,等.鄂尔多斯盆地伊盟隆起上古生界天然气成藏条件[J].石油勘探与开发,2011,38(1):30-39
[7]江涛,陈刚,丁超,等.鄂尔多斯盆地神木—米脂地区上古生界天然气藏压力分布特征[J].特种油气藏,2010,17(3):48-51,122
[8]周锴,孙卫,王博,等.苏里格气田东区盒8—山1段储层岩石学特征及其对储层物性的影响[J].石油化工应用,2014,33(10):71-75,80
[9]周进松,王念喜,赵谦平,等.鄂尔多斯盆地东南部上古生界储层岩石学特征[J].矿物岩石地球化学通报,2014,33(4):500-504
[10]张莉,杨申谷,杨锐,等.鄂尔多斯盆地定边地区盒8段储层成岩作用[J].岩性油气藏,2013,25(1):40-44
[11]马志欣,张吉,孙卫锋,等.鄂尔多斯盆地上古生界致密砂岩气藏储层特征及控制因素:以苏里格气田桃2区块为例[J].石油天然气学报,2014,36(9):16-21,3
[12]吴恒,侯明才,魏旭,等.鄂尔多斯盆地苏14井区盒8段储层宏观非均质性研究[J].科学技术与工程,2014,14(34):128-134
[13]杨华,付金华,刘新社,等.鄂尔多斯盆地上古生界致密气成藏条件与勘探开发[J].石油勘探与开发,2012,39(3):295-303
[14]马六一.浅析影响碎屑岩成岩作用的地质因素[J].中国科技信息,2011(9):21,23
[15]HAWKINS P J.Relationship between diagenesis,porosity reduction,and oil emplacement in late Carboniferous sandstone reservoirs,Bothamsall Oilfield,E midlands[J].Journal of the Geological Society,1978,135(1):7-24
[16]Hayes J B.Porosity evolution of sandstone relates to vitrinite reflectance[J].Organic Geochemistry,1991,17(2):117-129
[17]雷卞军,李跃刚,李浮萍,等.鄂尔多斯盆地苏里格中部水平井开发区盒8段沉积微相和砂体展布[J].古地理学报,2015,17(1):91-105
[18]武春英,韩会平,康锐,等.鄂尔多斯盆地苏里格南部地区盒8段沉积相特征及其意义[J].地球科学与环境学报,2014,36(4):77-86
[19]刘锐娥,吴浩,魏新善,等.砂岩储层中长石的异常分布及成因:以鄂尔多斯盆地二叠系石盒子组8段为例[J].中国矿业大学学报,2017,46(1):96-105
[20]包洪平,杨奕华,王晓方,等.同沉积期火山作用对鄂尔多斯盆地上古生界砂岩储层形成的意义[J].古地理学报,2007,9(4):397-406
[2]李志军,许兴基.鄂尔多斯盆地东缘石炭二叠系煤层气资源[J].资源·产业,2000(12):17-18
[3]王佟,王庆伟,傅雪海.煤系非常规天然气的系统研究及其意义[J].煤田地质与勘探,2014,42(1):24-27
[4]杨华,刘新社.鄂尔多斯盆地古生界煤成气勘探进展[J].石油勘探与开发,2014,41(2):129-137
[5]曹代勇,刘亢,刘金城,等.鄂尔多斯盆地西缘煤系非常规气共生组合特征[J].煤炭学报,2016,41(2):277-285
[6]王明健,何登发,包洪平,等.鄂尔多斯盆地伊盟隆起上古生界天然气成藏条件[J].石油勘探与开发,2011,38(1):30-39
[7]江涛,陈刚,丁超,等.鄂尔多斯盆地神木—米脂地区上古生界天然气藏压力分布特征[J].特种油气藏,2010,17(3):48-51,122
[8]周锴,孙卫,王博,等.苏里格气田东区盒8—山1段储层岩石学特征及其对储层物性的影响[J].石油化工应用,2014,33(10):71-75,80
[9]周进松,王念喜,赵谦平,等.鄂尔多斯盆地东南部上古生界储层岩石学特征[J].矿物岩石地球化学通报,2014,33(4):500-504
[10]张莉,杨申谷,杨锐,等.鄂尔多斯盆地定边地区盒8段储层成岩作用[J].岩性油气藏,2013,25(1):40-44
[11]马志欣,张吉,孙卫锋,等.鄂尔多斯盆地上古生界致密砂岩气藏储层特征及控制因素:以苏里格气田桃2区块为例[J].石油天然气学报,2014,36(9):16-21,3
[12]吴恒,侯明才,魏旭,等.鄂尔多斯盆地苏14井区盒8段储层宏观非均质性研究[J].科学技术与工程,2014,14(34):128-134
[13]杨华,付金华,刘新社,等.鄂尔多斯盆地上古生界致密气成藏条件与勘探开发[J].石油勘探与开发,2012,39(3):295-303
[14]马六一.浅析影响碎屑岩成岩作用的地质因素[J].中国科技信息,2011(9):21,23
[15]HAWKINS P J.Relationship between diagenesis,porosity reduction,and oil emplacement in late Carboniferous sandstone reservoirs,Bothamsall Oilfield,E midlands[J].Journal of the Geological Society,1978,135(1):7-24
[16]Hayes J B.Porosity evolution of sandstone relates to vitrinite reflectance[J].Organic Geochemistry,1991,17(2):117-129
[17]雷卞军,李跃刚,李浮萍,等.鄂尔多斯盆地苏里格中部水平井开发区盒8段沉积微相和砂体展布[J].古地理学报,2015,17(1):91-105
[18]武春英,韩会平,康锐,等.鄂尔多斯盆地苏里格南部地区盒8段沉积相特征及其意义[J].地球科学与环境学报,2014,36(4):77-86
[19]刘锐娥,吴浩,魏新善,等.砂岩储层中长石的异常分布及成因:以鄂尔多斯盆地二叠系石盒子组8段为例[J].中国矿业大学学报,2017,46(1):96-105
[20]包洪平,杨奕华,王晓方,等.同沉积期火山作用对鄂尔多斯盆地上古生界砂岩储层形成的意义[J].古地理学报,2007,9(4):397-406