鄂尔多斯盆地L地区上古生界上石盒子组物源特征及其对储层的控制作用
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摘要
首先从岩屑分布、重矿物组合、稀土元素等多方面,对L地区石盒子组进行了物源分析。分析结果表明,研究区上古生界碎屑颗粒主要来自盆地北部的中上元古界大青山母岩的变质岩体,晚石盒子期还同时受到盆地东北缘的太古宙内蒙造山带兴蒙物源影响,其母岩主要为混合花岗岩、变质岩及侵入岩体。复合物源的共同控制使上石盒子组形成了富含长石、岩屑且岩浆岩岩屑含量显著增高的砂岩储层。溶蚀作用是控制储层质量的主要机制,优质储层主要受岩屑、长石、火山凝灰质填隙物等易溶矿物分布的影响;另一方面,通过分析各类沉积相标志识别了L地区上石盒子组的主要沉积微相类型及展布特征,确定其主要发育砂泥岩不等厚互层的三角洲前缘沉积,水下分流河道为骨架砂体,储层物性具明显相控规律。总体上,上石盒子组储层受物源及其控制下的沉积相共同影响,其储集性能在上古生界具有相对优势。
Based on the data of lithic fragment,heavy mineral,rare earth element,the provenance of clastic particles of Upper Shihezi Formation is analyzed in the study area.The research showed that the clastic particles mainly came from the Yinshan mountain ranges which mostly consisted of metamorphic rock of Precambrian.It was also controlled by the granodiorite,intrusive body of Archaeozoic and Proterozoic,which was from Inner Mongolia orogenic belt.Under the joint influence of the two parent rock origins,clastic particles in Upper Shihezi Formation had the characteristic with high debris composition and more feldspar.The dissolution under the provenance control was the main mechanism to control the reservoir quality,which was influenced by the distribution of soluble minerals such as feldspar,rock debris,volcanic tuff and so on.On the other hand,different kinds of sedimentary facies signs were analyzed,identifying the major microfacies type and its distribution characteristic of Upper Shihezi Formation in the study area.It was determined that it mainly developed delta front deposits,and the underwater distributary channel was the skeleton sand body.On the whole,the reservoir properties of Upper Shihezi Formation are influenced by the provenance and sedimentary facies controlled by it,and its reservoir performance has comparative advantage in Upper Paleozoic strata.
Based on the data of lithic fragment,heavy mineral,rare earth element,the provenance of clastic particles of Upper Shihezi Formation is analyzed in the study area.The research showed that the clastic particles mainly came from the Yinshan mountain ranges which mostly consisted of metamorphic rock of Precambrian.It was also controlled by the granodiorite,intrusive body of Archaeozoic and Proterozoic,which was from Inner Mongolia orogenic belt.Under the joint influence of the two parent rock origins,clastic particles in Upper Shihezi Formation had the characteristic with high debris composition and more feldspar.The dissolution under the provenance control was the main mechanism to control the reservoir quality,which was influenced by the distribution of soluble minerals such as feldspar,rock debris,volcanic tuff and so on.On the other hand,different kinds of sedimentary facies signs were analyzed,identifying the major microfacies type and its distribution characteristic of Upper Shihezi Formation in the study area.It was determined that it mainly developed delta front deposits,and the underwater distributary channel was the skeleton sand body.On the whole,the reservoir properties of Upper Shihezi Formation are influenced by the provenance and sedimentary facies controlled by it,and its reservoir performance has comparative advantage in Upper Paleozoic strata.
引文
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[19]Wei Honghong.Research on Permian-Carboniferous Depositional Systems and the Sequence Stratigraphy of Ordos Area[D].Xi'an:Northwest University,2002.魏红红.鄂尔多斯地区石炭系—二叠系沉积体系及层序地层学研究[D].西安:西北大学,2002.
[20]Chen Anqing,Chen Hongde,Lin Liangbiao,et al.An analysis of sequence filling types and process of Shihezi Formation in northeast Ordos Basin[J].Geology in China,2009,15(5):1046-1054.陈安清,陈洪德,林良彪,等.鄂尔多斯盆地东北部石盒子组层序充填样式及过程分析[J].中国地质,2009,15(5):1046-1054.
[2]Yang Hua,Fu Jinhua,Liu Xinshe,et al.Accumulation conditions and exploration and development of tight gas in the Upper Paleozoic of the Ordos Basin[J].Petroloum Exploration and Development,2012,39(3):295-303.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.
[3]Zou Caineng,Zhu Rukai,Wu Songtao,et al.Types,characterisitics,genesis and prospects of conventional and unconventional hydrocarbon accumulation:Taking tight oil and tight gas in China as an instance[J].Acta Petrolei Sinica,2012,33(2):173-187.邹才能,朱如凯,吴松涛,等.常规与非常规油气聚集类型、特征、机理及展望——以中国致密油和致密气为例[J].石油学报,2012,33(2):173-187.
[4]Wu Fuli,Zhao Jingzhou,Yan Shike,et al.Geological characteristic sand exploration prospect of Upper Paleozoic reservoirs in Yanchang area,Ordos Basin[J].Petroloum Exploration and Development,2007,34(4):401-405.武富礼,赵靖舟,闫世可,等.鄂尔多斯盆地延长区上古生界储集层地质特征及天然气勘探前景[J].石油勘探与开发,2007,34(4):401-405.
[5]Luo Jinglan,Li Jian,Yang Binghu,et al.Provenance for the Chang 6and Chang8 member of the Yanchang Formationin Xifeng area and in the periphery Ordos Basin:Evidence from petrologic geochemistry[J].Sciences in China:Series D,2007,50(supplement II):75-90.
[6]Chen Quanhong,Li Wenhou,Liu Haowei,et al.Provenance a nalysis of sandstone of the Upper Carboniferous to Middle Permianin Ordos Basin[J].Journal of Palaeogeography,2010,11(6):629-640.陈全红,李文厚,刘昊伟,等.鄂尔多斯盆地上石炭统中二叠统砂岩物源分析[J].古地理学报,2010,11(6):629-640.
[7]Wang Guoru.The Study of Sources and Senquence-lithofaces Palaeogeography of Upper Palaeozoic,Northern Ordos[D].Chengdu:Chengdu University of Technology,2011:31-44.王国茹.鄂尔多斯盆地北部上古生界物源及层序岩相古地理研究[D].成都:成都理工大学,2011:31-44.
[8]Shen Yulin.Study on Palaeogeography and Control Factor Analysis of Efficient Reservoir Development in Late Paleozoic in Middle eastern Ordos[D].Beijing:China University of Mining and Technology,2009.沈玉林.鄂尔多斯中东部晚古生代古地理及高效储层控制因素研究[D].北京:中国矿业大学,2009.
[9]Li Mingrui.Depositional Character and Control Factors of Reservoir Sandbody in Major Gas-Bearing Interval of Upper Paleozoic in North Ordos Basin[D].Chengdu:Chengdu University of Technology,2011.李明瑞.鄂尔多斯盆地北部上古生界主要含气砂体沉积特征及储层控制因素研究[D].成都:成都理工大学,2011.
[10]Chen Bairui.Diagenesis of Shihezi Formation in Linxing area,Ordos Basin[D].Beijing:China University of Petroleum,2016.陈柏瑞.鄂尔多斯盆地L地区石盒子组储层成岩作用研究[D].北京:中国石油大学,2016.
[11]Xie Yinggang,Ye Jianping,Pan Xinzhi,et al.Type of diagenes and its controlling effect on oil and gas reservoirs in the Xiashihezi Formation in Linxing area,Ordos Basin[J].China Mining Magazine,2016,25(7):166-172.谢英刚,叶建平,潘新志,等.鄂尔多斯盆地L地区下石盒子组成岩作用类型及其对油气储层的控制作用[J].中国矿业,2016,25(7):166-172.
[12]Luo Jinglan,Wei Xinshan,Yao Jingli,et al.Provenance and depositional facies controlling on the Upper Paleozoic excellent natural gas-reservoirs in north Ordos Basin[J].Geological Bulletin of China,2010,29(6):811-820.罗静兰,魏新善,姚泾利,等.物源与沉积相对鄂尔多斯盆地北部上古生界天然气优质储层的控制[J].地质通报,2010,29(6):811-820.
[13]Qu Hongjun,Ma Qiang,Gao Shengli,et al.Controls of provenance and depositional facies on sandbody distributions of the Upper Paleozoic in southeast Ordos Basin[J].Acta Sedimentologica Sinica,2011,30(5):825-834.屈红军,马强,高胜利,等.物源与沉积相对鄂尔多斯盆地东南部上古生界砂体展布的控制[J].沉积学报,2011,30(5):825-834.
[14]Ma Dongxu,Xu Yong,LüJianwen,et al.Relationship between provenance and formation of Lower Shihezi Formation in Linxing area,Ordos Basin,China[J].Natural Gas Geoscience,2016,27(7):1215-1224.马东旭,许勇,吕剑文,等.鄂尔多斯盆地L地区下石盒子组物源特征及其与储层关系[J].天然气地球科学,2016,27(7):1215-1224.
[15]Wang Qi,Ma Dongxu,Yu Fang,et al.The diagentic evolution and quantitative research of porosity in different grain size sandstones of the Lower Shihezi Formation in Linxing area[J].Acta Sedimentologica Sinica,2017,35(1):163-172.王琪,马东旭,余芳,等.鄂尔多斯盆地L地区下石盒子组不同粒级砂岩成岩演化及孔隙定量研究[J].沉积学报,2017,35(1):163-172.
[16]Su Mina,Song Pan,Qiu Longwei,et al.Diagenetic evolution of tight sandstone reservoir in Lower Shihezi Formation from Daniudi Gasfield[J].Journal of Central South University:Science and Technology,2016,47(10):3555-3561.苏妮娜,宋璠,邱隆伟,等.大牛地气田下石盒子组致密砂岩储层成岩演化[J].中南大学学报:自然科学版,2016,47(10):3555-3561.
[17]Xu Wenxi,Li Lingchuan.Reservoir evaluation of the Middle Permian Lower Shihezi Formation,Dongsheng Gasfield,Ordos Basin[J].Natural Gas Exploration&Development,2016,39(2):18-21,40,Ⅲ.徐文玺,李凌川.鄂尔多斯盆地东胜气田二叠系中统下石盒子组储层评价[J].天然气勘探与开发,2016,39(2):18-21,40,Ⅲ.
[18]Liu Xixiang,Ding Xiaoqi,Wang Jia,et al.Inuence of sandstone composition on pore structures and gas enrichment degree:A case study on the 8th member of Permian Shihezi Formation in the western Sulige Gasfield,Ordos Basin[J].Natural Gas Industry,2016,36(7):27-32.刘曦翔,丁晓琪,王嘉,等.砂岩成分对储层孔隙结构及天然气富集程度的影响——以苏里格气田西区二叠系石盒子组8段为例[J].天然气工业,2016,36(7):27-32.
[19]Wei Honghong.Research on Permian-Carboniferous Depositional Systems and the Sequence Stratigraphy of Ordos Area[D].Xi'an:Northwest University,2002.魏红红.鄂尔多斯地区石炭系—二叠系沉积体系及层序地层学研究[D].西安:西北大学,2002.
[20]Chen Anqing,Chen Hongde,Lin Liangbiao,et al.An analysis of sequence filling types and process of Shihezi Formation in northeast Ordos Basin[J].Geology in China,2009,15(5):1046-1054.陈安清,陈洪德,林良彪,等.鄂尔多斯盆地东北部石盒子组层序充填样式及过程分析[J].中国地质,2009,15(5):1046-1054.