川西北地区须家河组二段致密砂岩储层特征及其主控因素

doi:10.3969/j.issn.1006-6535.2023.05.007

摘要/Abstract

摘要： 为明确川西坳陷北部地区上三叠统须家河组致密储层分布特征,通过岩心描述、测井解释和X射线衍射矿物分析,得到储层沉积微相类型和矿物组成特征,结合岩石薄片和场发射扫描电镜观察、孔渗和压汞测试等,得到的成岩作用及储层孔隙结构分析结果,开展了须家河组二段储层致密化影响因素研究,建立川西北部地区须二段储层综合分类评价标准。结果表明:须二段致密储层发育的主要原因为储层孔隙度受岩性控制,矿物组分的差异使须二段砂岩具有强胶结、中等压实和弱破裂的特征,中等压实作用有利于提高储层物性,强胶结作用增强了储层的致密性。研究结果可为该区致密储层发育的有利区域筛选及下一步开展勘探致密气藏有利目标区提供依据。

关键词: 孔隙结构, 储层特征, 致密储层, 成岩作用, 须家河组, 川西北部地区

Abstract: In order to clarify the distribution characteristics of tight reservoirs in the Upper Triassic Xujiahe Formation in the northern part of the Western Sichuan Depression, we obtained reservoir sedimentary microfacies types and mineral composition characteristics by core description, logging interpretation and X-ray diffraction mineral analysis, combined with the diagenesis obtained from the rock thin section and field emission scanning electron microscopy observation, pore permeability and mercury injection test and the analysis results of the reservoir pore structure, and carried out a study on the factors influencing the tightness of reservoirs in the Member 2 of the XujiaheFormation.A comprehensive classification evaluation standard was established for the reservoirs Member 2 of the Xujiahe Formation in Northwest Sichuan. The result shows that the main reason for the development of tight reservoirs in the Member 2 of the Xujiahe Formation is that the reservoir porosity is controlled by lithology, and the differences in mineral components make the sandstone in the Member 2 of the Xujiahe Formation characterized by strong cementation, moderate compaction and weak fracture. The study results provide a basis for the screening of favorable sites for the development of tight reservoirs in this area and the favorable target areas for further exploration of tight gas reservoirs.

Key words: pore structure, reservoir characteristics, tight reservoir, diagenesis, Xujiahe Formation, northwest Sichuan

中图分类号:

TE122.2

雷越, 黄嵌, 王旭丽, 杨涛, 田云英, 李洪林, 汤潇, 刘柏. 川西北地区须家河组二段致密砂岩储层特征及其主控因素[J]. 特种油气藏, 2023, 30(5): 50-57.

Lei Yue, Huang Qian, Wang Xuli, Yang Tao, Tian Yunying, Li Honglin, Tang Xiao, Liu Bai. Reservoir Characteristics and Main Controlling Factors of Tight Sandstone in Member 2 of the Xujiahe Formation in Northwest Sichuan[J]. Special Oil & Gas Reservoirs, 2023, 30(5): 50-57.

参考文献

[1] 刘俞佐,石万忠,刘凯.鄂尔多斯盆地杭锦旗东部地区上古生界天然气成藏模式[J].岩性油气藏,2020,32(3):56-67.
LIU Yuzuo,SHI Wanzhong,LIU Kai.Natural gas accumulation patterns of Upper Paleozoic in eastern Hangjinqi Area,Ordos Basin[J].Lithologic Reservoirs,2020,32(3):56-67.
[2] 关旭,金吉能,杨威.川中地区须家河组岩性气藏特征与含气有利区预测——以安岳—磨溪地区须家河组二段为例[J].天然气地球科学,2022,33(3):358-368.
GUAN Xu,JIN Jineng,YANG Wei.Lithologic gas reservoir characteristics and prediction of gas-bearing favorable zone of the Xujiahe Formation in central Sichuan Basin:case study of the 2nd member of Xujiahe Formation in Anyue-Moxi Areas[J].Natural Gas Geoscience,2022,33(3):358-368.
[3] 唐大海,谭秀成,王小娟.四川盆地须家河组致密气藏成藏要素及有利区带评价[J].特种油气藏,2020,27(3):40-46.
TANG Dahai,TAN Xiucheng,WANG Xiaojuan.Tight gas accumulation elements and favorable zone evaluation of Xujiahe Formation in Sichuan Basin[J].Special Oil & Gas Reservoirs,2020,27(3):40-46.
[4] 章顺利.四川盆地中西部上三叠统须家河组二段孔隙型致密砂岩储层特征与形成机理[D].成都:成都理工大学,2020.
ZHANG Shunli.Characteristics and formation mechanism of porous tight sandstone reservoir in the second member of Xujiahe Formation,Upper Triassic,central and western Sichuan Basin[D].Chengdu:Chengdu University of Technology,2020.
[5] 吴家洋.川中西部金华地区须家河组二段致密砂岩储层评价[D].成都:成都理工大学,2020.
WU Jiayang.Evaluation of tight sandstone reservoirs in the second member of Xujiahe Formation in Jinhua Area,western Sichuan basin[D].Chengdu:Chengdu University of Technology,2020.
[6] 罗静兰,李弛,雷川.碎屑岩储集层成岩作用研究进展与热点问题讨论[J].古地理学报,2020,22(6):1021-1040.
LUO Jinglan,LI Chi,LEI Chuan.Discussion on research advances and hot issues in diagenesis of clastic-rock reservoirs[J].Journal of Palaeogeography,2020,22(6):1021-1040.
[7] 李兆雨,李文厚,李永项.鄂尔多斯盆地苏里格东三区盒8段砂岩成岩作用及孔隙演化定量化分析[J].地质科学,2020,55(3):742-756.
LI Zhaoyu,LI Wenhou,LI Yongxiang.Diagenesis of sandstone and quantitative analysis of porosity evolution of He8 Section in the East III part of Sulige,Ordos Basin[J].Chinese Journal of Geology(Scientia Geologica Sinica),2020,55(3):742-756.
[8] 漆麟,蒋裕强,朱讯.川西北地区须家河组三段致密砂砾岩沉积特征及模式[J].四川地质学报,2021,41(3):410-416,466.
QI Lin,JIANG Yuqiang,ZHU Xun.Sedimentological characteristics and sedimentary model of massive glutenite of the 3rd member of the Xujiahe Formation in northwest Sichuan[J].Acta Geologica Sichuan,2021,41(3):410-416,466.
[9] 梁霄.川西坳陷北段复杂地质构造背景下深层海相油气成藏过程研究[D].成都:成都理工大学,2020.
LIANG Xiao.Research on deep marine oil & gas reservoir process under the background of complex geological structure in the northern section of in western Sichuan Depression[D].Chengdu:Chengdu University of Technology,2020.
[10] 王雪柯,李伟,张本健.四川盆地西北部上三叠统须三段储层超致密与气藏超压成因[J].天然气工业,2019,39(11):25-35.
WANG Xueke,LI Wei,ZHANG Benjian.The formation mechanisms of ultra-tight and overpressured gas reservoir in the 3rd member of Upper Triassic Xujiahe Formation in the northwestern Sichuan Basin[J].Natural Gas Industry,2019,39(11):25-35.
[11] 马尚伟,魏丽,王一军,等.鄂尔多斯盆地南部盒8段致密砂岩储层微观孔隙结构表征与评价[J].地质与勘探,2022,58(6):1321-1330.
MA Shangwei,WEI Li,WANG Yijun,et al.Characterization and evaluation of microscopic pore structures of tight sandstone reservoir in the 8th member of Shihezi Formation in southern Ordos Basin[J].Geology & Exploration,2022,58(6):1321-1330.
[12] 刘俞佐,翟刚毅,徐笑丰.鄂西地区牛蹄塘组和陡山沱组优质页岩测井识别[J].地球科学,2022,47(5):1791-1804.
LIU Yuzuo,ZHAI Gangyi,XU Xiaofeng.Logging identification of high quality shale of Niutitang Formation and Doushantuo Formation in western Hubei[J].Journal of Earth Science,2022,47(5):1791-1804.
[13] 庞军刚,李文厚,国吉安.特低渗透-致密砂岩成岩作用特征及其差异性分析——以鄂尔多斯盆地陇东地区延长组为例[J].地质科学,2021,56(1):121-135.
PANG Jungang,LI Wenhou,GUO Ji'an.Diagenesis characteristics and difference analysis of ultra-low permeability and tight sandstone:taking Yanchang Formation in Longdong Area of Ordos Basin as an example[J].Chinese Journal of Geology(Scientia Geologica Sinica),2021,56(1):121-135.
[14] 杨甜甜,张晓丽,何金先,等.滇东威信地区龙潭组煤系致密砂岩储层特征[J].断块油气田,2022,29(4):475-482.
YANG Tiantian,ZHANG Xiaoli,HE Jinxian,et al.Characteristics of coal-bearing tight sandstone reservoir in Longtan Formation of Weixin Area, eastern Yunnan[J].Fault-Block Oil & Gas Field,2022,29(4):475-482.
[15] 王伟, 陈朝兵, 许爽,等.鄂尔多斯盆地延长组致密砂岩不同尺度孔喉分形特征及其控制因素[J]. 石油实验地质, 2022, 44(1): 33-40.
WANG Wei, CHEN Zhaobing, XU Shuang, et al. Fractal characteristics and its controlling factors of pore-throat with different scales in tight sandstones of the Yanchang Formation in the Ordos Basin[J].Petroleum Geology & Experiment, 2022, 44(1): 33-40.
[16] 付小东,张天付,吴健平,等.二连盆地阿南凹陷白垩系腾格尔组致密油储层特征及主控因素[J]. 石油实验地质, 2021, 43(1): 64-76.
FU Xiaodong, ZHANG Tianfu, WU Jianping,et al.Characteristics and main controlling factors of tight oil rese- rvoirs in Cretaceous Tengger Formation, A'nan Sag, Erlian Basin [J].Petroleum Geology & Experiment,2021, 43(1): 64-76.
[17] 王小娟,洪海涛,吴长江,等. 四川盆地川中地区侏罗系沙溪庙组致密砂岩储层特征及成因[J].吉林大学学报(地球科学版), 2022, 52(4):1037-1051.
WANG Xiaojuan, HONG Haitao, WU Changjiang, et al. Characteristics and formation mechanisms of tight sandstone reservoirs in Jurassic Shaximiao Formation, central of Sichuan Basin[J]. Journal of Jilin University (Earth Science Edition), 2022, 52(4):1037-1051.
[18] 徐宁宁,张守鹏,王永诗.鄂尔多斯盆地北部二叠系下石盒子组致密砂岩成岩作用及孔隙成因[J].沉积学报,2022,40(2):422-434.
XU Ningning,ZHANG Shoupeng,WANG Yongshi.Diagenesis and pore formation of the Upper Paleozoic tight sandstone in the northern area of the Ordos Basin[J].Acta Sedimentologica Sinica,2022,40(2):422-434.
[19] 崔维兰,张涛,张锦锋.李家城则区长6致密砂岩成岩作用与影响因素[J].断块油气田,2019,26(3):304-308.
CUI Weilan,ZHANG Tao,ZHANG Jinfeng.Diagenesis and influencing factors of Chang6 tight sandstone in Lijiachengze Area[J].Fault-Block Oil & Gas Field,2019,26(3):304-308.
[20] 张义纲.天然气的生成聚集和保存[M].南京:河海大学出版社,1991:93-103.
ZHANG Yigang.Generation,accumulation and preservation of natural gas[M].Nanjing:Hohai University Press,1991:93-103.
[21] 曾联波,李跃纲,张贵斌,等.川西南部上三叠统须二段低渗透砂岩储层裂缝分布的控制因素[J].中国地质,2007,34(4):6.
ZENG Lianbo,LI Yuegang,ZHANG Guibin,et al.Controlling factors for fracture distribution in the low-permeability sandstone reservoir of the second member of the Upper Triassic Xujiahe Formation in the south of western Sichuan[J].Geology in China,2007,34(4):6.
[22] 张满郎,张静平,汤子余,等.川中安岳气田须二段致密砂岩气藏开发有利区优选[J].断块油气田,2022,29(2):171-177.
ZHANG Manlang,ZHANG Jingping,TANG Ziyu,et al.Preferential selection of favorable development areas of tight sandstone gas reservoir in the second member of Xujiahe Formation in Anyue Gas Field of central Sichuan Basin[J].Fault-Block Oil & Gas Field,2022,29(2):171-177.
[23] 罗群,张泽元,袁珍珠,等.致密油“甜点”的内涵、评价与优选:以酒泉盆地青西凹陷白垩系下沟组为例[J].岩性油气藏,2022,34(4):1-12.
LUO Qun,ZHANG Zeyuan,YUAN Zhenzhu,et al. Connotation, evaluation and optimization of tight oil “sweet spots”:a case study of Cretaceous Xiagou Formation in Qingxi Sag,Jiuquan Basin[J]. Lithologic Reservoirs,2022,34(4):1-12.