东营凹陷砂岩储层自生高岭石发育特征与成因机制

doi:10.11743/ogg20150109

摘要/Abstract

摘要：

通过大量薄片鉴定、岩心观察以及扫描电镜、粘土矿物粉晶衍射等分析测试手段，对东营凹陷砂岩储层中发育的高岭石的分布、产状以及镜下特征等进行了分析。结果表明，研究区砂岩储层中高岭石有自生和陆源两种成因。自生高岭石在储层中较为常见，其微观特征表现为结晶形态完整，呈典型的书页或蠕虫状充填于粒间孔和长石颗粒溶孔内，在铸体薄片中可见自生高岭石集合体呈“斑状”的聚集充填特征。陆源高岭石在研究区较为少见，一般在浅层出现，是在沉积过程中与碎屑颗粒等非粘土矿物同时形成。在上述研究的基础上，对自生高岭石成因机制进行了讨论，认为东营凹陷砂岩储层中长石类矿物的溶蚀作用是自生高岭石形成的主要物质来源。研究区粒度大、分选好的砂岩储层中高岭石含量较高，说明除酸性的流体环境和一定的物质供应外，流体动力条件也是自生高岭石形成的重要控制因素。

关键词: 自生高岭石, 高岭石成因, 砂岩储层, 东营凹陷

Abstract:

Arthroscopic characteristics, distribution and occurrence of kaolinite are analyzed through quantity thin section analysis, core observation, scanning electron microscope and X-ray powder diffraction.The results show that the kaolinite of sandstone reservoirs in Dongying Sag has two genetic types including authigenic kaolinite and terrigenous kaolinite.The authigenic kaolinites are common in the reservoirs.Microscopically, they show complete crystal form, and fill intergranular pores and dissolution pores of feldspar in typical sheet or vermicular shapes.The "spotted" filling feature of the authitgenic kaolinite aggregates are clear on cast thin sections.The terrigenous kaolinites are rare and often occur in shallow layers.They are formed in association with the non-clay minerals like clastic particles in deposition process.Based on the study mentioned above, the genetic mechanism of authigenic kaolinite is discussed.It is supposed that feldspar dissolution is the main material source for the formation of authigenic kaolinite.Sandstones with large grain size and well sorting have high content of kaolinite, indicating that, in addition to acid fluid environment and sufficient material supply, strong fluid dynamic is also an important controlling factor of authigenic kaolinite formation.

Key words: authigenic kaolinite, genesis of kaolinite, sandstone reservoir, Dongying Sag

中图分类号:

TE122.2

张永旺,曾溅辉,曲正阳,等. 东营凹陷砂岩储层自生高岭石发育特征与成因机制[J]. 石油与天然气地质, 2015, 36(1): 73-79. doi: 10.11743/ogg20150109 Zhang Yongwang,Zeng Jianhui,Qu Zhengyang,et al. Development characteristics and genetic mechanism of authigenic kaolinite in sandstone reservoirs of the Dongying Sag, Bohai Bay Basin[J]. Oil & Gas Geology, 2015, 36(1): 73-79. doi: 10.11743/ogg20150109

参考文献

[1] Surdam R C,Crossey L J,Hagen E S,et al.Organic-inorganic interaction and sandstone diagenesis[J].AAPG Bulletin,1989,73(1):1-23.
[2] Emery D,Meyers K.Ancient subaerial exposure and freshwater leaching in sandstones[J].Geology,1990,18:1178-1181.
[3] 伏万军.粘土矿物成因及对砂岩储集性能的影响[J].古地理学报,2000,2(3):59-67. Fu Wanjun.Influence of clay minerals on sandstone reservoir properties[J].Journal of Palaeogeography,2000,2(3):59-67.
[4] 曹剑,张义杰,胡文瑄,等.油气储层自生高岭石发育特点及其对物性的影响[J].矿物学报,2005,25(4):367-373. Cao Jian,Zhang Yijie,Hu Wenxuan,et al.Developing characteristics of kaolinite in central Junggar Basin and their effect on the reservoir quality[J].Acta Mieralogica Sinica,2005,25(4):367-373.
[5] 陈鑫,钟建华,袁静,等.渤南洼陷古近系高岭石发育特征及转化机理[J].石油勘探与开发,2009,36(4):456-462. Chen Xin,Zhong Jianhua,Yuan Jing,et al.Development and formation of Paleogene kaolinite,Bonan Subsag[J].Petroleum Exploration and Development,2009,36(4):456-462.
[6] 张建培,葛和平,漆滨汶.西湖凹陷砂岩自生高岭石发育特征及其对储层物性的影响[J].海洋石油,2008,20(6):362-366. Zhang Jianpei,Ge Heping,Qi Binwen.Characteristics of authigenic kaolinite in sandstones of Xihu Sag and its impact on reservoir physical properties[J].Offshore Oil,2008,20(6):362-366.
[7] 钟大康,周立建,孙海涛,等.储层岩石学特征对成岩作用及孔隙发育的影响——以鄂尔多斯盆地陇东地区三叠系延长组为例[J].石油与天然气地质,2012,33(6):890-899. Zhong Dakang,Zhou Lijian,Sun Haitao,et al.Influences of petrologic features on diagenesis and pore development:an example from the Triassic Yanchang Formation in Longdong area,Ordos Basin[J].Oil & Gas Geology,2012,33(6):890-899.
[8] 国殿斌.东濮凹陷三叠系裂缝性砂岩储层微观孔隙结构特征[J].断块油气田,2011,18(2):191-194. Guo Dianbin. Characteristics of micropore structure of Triassic sandstone reservoir in Dongpu Depression[J].Fault-Block Oil & Gas Field,2011,18(2):191-194.
[9] 钟大康,周立建,姚泾利,等. 储层岩石学特征对成岩作用及孔隙发育的影响——以鄂尔多斯盆地陇东地区三叠系延长组为例[J].石油与天然气地质,2012,33(6):890-899. Zhong Dakang,Zhou Lijian,Yao Jinli,et al. Influences of petrologic features on diagenesis and pore development:an example from the Triassic Yanchang Formation in Longdong area,Ordos Basin[J].Oil & Gas Geology,2012,33(6):890-899.
[10] 史鹏,陈清华,陈义国,等.海安凹陷南部泰一段成岩作用类型及特征[J]. 石油地质与工程,2012,26(5):32-34 Shi Peng,Chen Qinghua,Chen Yiguo,et al.Diagenesis types and charactoristics of the 1^st member of Taizhou Formation in the south Haian Sag[J].Petroleum Geology and Engineering,2012,26(5):32-34
[11] 王雅楠,李达,齐银,等.苏里格气田苏14井区盒8段储层成岩作用与孔隙演化[J].断块油气田,2011,18(3):297-300. Wang Yanan,Li Da,Qi Yin,et al. Diagenesis and pore evolution of He 8 reservoir in Well Block Su 14 of Sulige Gas Field[J]. Fault-Block Oil & Gas Field,2011,18(3):297-300.
[12] 陈朝兵,朱玉双,陈新晶,等.鄂尔多斯盆地姬塬地区延长组长8²储层沉积成岩作用[J].石油与天然气地质,2013,34(5):685-693. Chen Zhaobing,Zhu Yushuang,Chen Xinjing,et al.Sedimentation and diagenesis of Chang 8² reservoir in the Yanchang Formation in Jiyuan region,Ordos Basin[J].Oil & Gas Geology,2013,34(5):685-693.
[13] 张兴良,田景春,王峰,等.致密砂岩储层成岩作用特征与孔隙演化定量评价——以鄂尔多斯盆地高桥地区二叠系下石盒子组盒8段为例[J].石油与天然气地质,2014,35(2):212-217. Zhang Xingliang,Tian Jingchun,Wang Feng,et al.Diagenetic characteristics and quantitative porosity estimation of tight sandstone reservoirs:a case from the 8^th Member of Permian[J].Oil & Gas Geology,2014,35(2):212-217.
[14] 张关龙,陈世悦,鄢继华.东营凹陷郑家-王庄地区沙河街组粘土矿物特征及其与储层伤害的关系[J].中国石油大学学报(自然科学版),2006,30(6):7-12. Zhang Guanlong,Chen Shiyue,Yan Jihua.Relation between clay mineral characteristics and formation damage of Shahejie Formation of Zhengjia-Wangzhuang areas in Dongying Depression[J].Journal of China University of Petroleum,2006,30(6):7-12.
[15] 周建国.东营凹陷自生粘土矿物特征及其与盆地演化的关系[J].油气地质与采收率,2004,11(4):7-9. Zhou Jianguo.Features on authigenic clay minerals in the Dongying Depression and their relation to the basin evolution.[J].Petroleum Geology and Recovery Efficiency,2004,11(4):7-9.
[16] 伏万军,刘文彬.塔里木盆地碎屑岩中钾长石的蚀变作用[J].沉积学报,1996,14:84-89. Fu Wanjun,Liu Wenbin.Study on the alteration of feldspar from clastic rock in Tarim Basin[J].Acta Sedimentologica Sinica,1996,14:84-89.
[17] 车启鹏,孙洪斌,张凤莲,等.牛居地区下第三系砂岩储层中自生高岭石成因分析[J].长春地质学院学报,1995,25(3):306-309. Che Qipeng,Sun Hongbin,Zhang Fenglian,et al.Authigenic kaolinite origin analysis of Paleogene sandstone reservoir in Niuju area[J].Journal of Changchun University of Earth Sciences,1995,25(3):306-309.
[18] 张守鹏.有利于油气保存的地下成岩环境分析——以渤海湾盆地东营凹陷RD1井为例[J].石油实验地质,2008,30(1):11-15. Zhang Shoupeng.Analysis of underground diagenetic environment favorable for oil and gas storage:a case study of well RD1,Dongying Sag,Bohai Bay Basin[J].Petroleum Geology & Experiments,2008,30(1):11-15.
[19] Stoessell R K.Kaolinite formation in clastic reservoirs carbon dioxide factor[J].AAPG Bulletin,1981,65(5):991-998.
[20] Franks S G.Relationships among carbon dixide,pore fluid chemistry,and second porosity,Texas Gulf coast[J].AAPG,1984,68(4):478.
[21] 赵杏媛.粘土矿物与油气[J].新疆石油地质,2009,30(4):533-536. Zhao Xingyuan.The impact of clay minerals on oil-gas reservoir[J].Xinjiang Petroleum Geology,2009,30(4):533-536.
[22] 王少依,王行信,韩守华.影响我国陆相碎屑岩储集层黏土矿物组合和分布的因素[J].石油勘探与开发,2002,29(6):19-21. Wang Shaoyi,Wang Xingxin,Han Shouhua.Factors affecting the clay mineral components and distributions of continental clastic reservoir in China[J].Petroleum Exploration and Development,2002,29(6):19-21.
[23] Osborne M,Baseline R S,Fallick A E.Variation in kaolinite morphology with growth temperature in isotopically mixed pore-fluids,Brent Group,UK North Sea[J].Clay Minerals,1994,29:591-608.
[24] 张关龙,陈世悦,鄢继华,等.郑家、王庄地区沙三段高岭石矿物特征及对储层物性的影响[C]//第三届全国沉积学大会论文摘要汇编,2004:671-674. Zhang Guanlong,Chen Shiyue,Yan Jihua,et al.Characteristics of authigenic kaolinite i and its impact on reservoir physical properties of Es³ in Zhengjia-Wangzhuang areas[C]//The Third National Congress of Sedimentology,2004:671-674.
[25] 赖兴运,于炳松,陈军元,等.碎屑岩骨架颗粒溶解的热力学条件及其在克拉2气田的应用[J].中国科学(D辑:地球科学),2004,34(1):45-53. Lai Xingyun,Yu Bingsong,Chen Junyuan,et al.Thermodynamics condition for dissolution of framework grain minerals of clastic rocks and its application in Kela 2 gas field[J].Science in China(D Series:Earth Sciences),2004,34(1):45-53.