Establishment of Sequence Stratigraphic Framework and Optimization of Favorable Exploration Areas of Lianggaoshan Formation, Sichuan Basin

doi:10.3969/j.issn.1006-6535.2023.02.008

Abstract

Abstract: In view of the complex and various problems in the establishment of sequence stratigraphic framework and the optimization of favorable areas in Lianggaoshan Formation, Sichuan Basin, according to the logging and seismic data of Liangshan Formation, the marker beds of different scales were identified, a logging-seismic identification standard was established for the marker beds, a sequence stratigraphic framework was constructed with regional grid lines, the relationship between lithology and facies zone changes of Lianggaoshan Formation in the whole basin was clarified by the combined analysis of seismic trace and well logging data, and the favorable exploration areas were determined according to the distribution of favorable facies zones and the relationship of "source and reservoir". The study shows that after the water entering horizon was regarded as the marker bed and the sequence stratigraphic framework as established, the development horizon, thickness and distribution range of source rock and reservoir could be quickly determined. Submember 3, Member 1 of Lianggaoshan Formation was regarded as the horizon favorable for source rock development, Submember 1, Member 2 of Lianggaoshan Formation regarded as the horizon favorable for reservoir development, and Submember 3, Member 1 of Lianggaoshan Formation regarded as the source rock development area, namely in the northeast of Sichuan Basin and the edge of Longgang-Liangping Area, with a maximum shale thickness of 60～80 m, which was a favorable target area for further exploration. The results of the study have enriched the sequence stratigraphy, sedimentary evolution and exploration area optimization of Lianggaoshan Formation, Sichuan Basin, and also provided theoretical basis for the exploration and development of similar reservoirs.

Key words: sequence stratigraphic framework, Lianggaoshan Formation, phase zone change, favorable area optimization, Sichuan Basin

CLC Number:

TE122.3

Hong Haitao, Zhang Shaomin, Zhang Rui, Guan Xu. Establishment of Sequence Stratigraphic Framework and Optimization of Favorable Exploration Areas of Lianggaoshan Formation, Sichuan Basin[J]. Special Oil & Gas Reservoirs, 2023, 30(2): 58-64.

References

[1] 黄仁春,邢凤存,范小军,等.四川盆地元坝地区长兴组—飞仙关组高精度层序地层格架的建立及礁滩储集层预测[J].古地理学报,2019,21(2):369-378.
HUANG Renchun,XING Fengcun,FAN Xiaojun,et al.Estab
lishment of high-precision sequence stratigraphic framework of the Changxing-Feixianguan Formations and prediction of reef-shoal reservoirs in Yuanba Area,Sichuan Basin[J].Journal of Paleogeography,2019,21(2):369-378.
[2] 杨占龙,沙雪梅,魏立花,等.地震隐性层序界面识别、高频层序格架建立与岩性圈闭勘探——以吐哈盆地西缘侏罗系—白垩系为例[J].岩性油气藏,2019,31(6):1-13.
YANG Zhanlong,SHA Xuemei,WEI Lihua,et al.Seismic subtle sequence boundary identification,high-frequency sequence framework establishment and lithologic trap exploration:a case study of Jurassic to Cretaceous in the western margin of Turpan-Kumul Basin[J].Lithologic Reservoirs,2019,31(6):1-13.
[3] 陈竹新,贾东,魏国齐,等.川西前陆盆地中—新生代沉积迁移与构造转换[J].中国地质,2008,35(3):472-481.
CHEN Zhuxin,JIA Dong,WEI Guoqi,et al.Meso-Cenozoic sediment transport and tectonic transition in the western Sichuan foreland basin[J].Geology in China,2008,35(3):472-481.
[4] 朱志军,陈洪德,胡晓强,等.川西前陆盆地侏罗纪层序地层格架、沉积体系配置及演化[J].沉积学报,2010,28(3):451-461.
ZHU Zhijun,CHEN Hongde,HU Xiaoqiang,et al.Framework of sequence stratigraphy,sedimentary system and evolution of Jurassic in western Sichuan Foreland Basin[J].Acta Sedimentologica Sinica,2010,28(3):451-461.
[5] 陈洪德,徐胜林,林良彪,等.龙门山造山带晚三叠世构造隆升的分段性及层序充填响应[J].沉积学报,2011,29(4):622-630.
CHEN Hongde,XU Shenglin,LIN Liangbiao,et al.Segmental uplift of longmenshanorogen and sequence filling characteristic of western Sichuan Foreland-like Basin,Later Triassic[J].ActaSedimentologica Sinica,2011,29(4):622-630.
[6] 林良彪,陈洪德,胡晓强,等.四川盆地上三叠统构造层序划分及盆地演化[J].地层学杂志,2007,31(4):415-422.
LIN Liangbiao,CHEN Hongde,HU Xiaoqiang,et al.Classification of tectonic sequence and basin evolution of the upper triassic in the sichuan basin[J].Journal of Stratigraphy,2007,31(4):415-422.
[7] 郑荣才,戴朝成,朱如凯,等.四川类前陆盆地须家河组层序－岩相古地理特征[J].地质论评,2009,55(4):484-495.
ZHENG Rongcai,DAI Chaocheng,ZHU Rukai,et al.Sequence-based lithofacies and paleogeographic characteristics of Upper Triassic Xujiahe Formation in Sichuan Basin[J].Geological Review,2009,55(4):484-495.
[8] 高红灿,郑荣才,柯光明,等.川东北前陆盆地须家河组层序-岩相古地理特征[J].沉积与特提斯地质,2005,25(3):38-45.
GAO Hongcan,ZHENG Rongcai,KE Guangming,et al.The Upper Triassic Xujiahe Formation in the northeastern Sichuan foreland basin:sequence-based sedimentary facies and palaeogeography[J].Sedimentary Geology and Tethyan Geology,2005,25(3):38-45.
[9] 戴少武.中扬子及邻区层序地层与原型盆地演化[J].石油与天然气地质,2003,23(3):229-235.
DAI Shaowu.Stratigraphic sequences in the middle Yangtze & adjacent region and evolution of prototype basins[J].Oil & Gas Geology,2003,23(3):229-235.
[10] 杨祥菊.川西坳陷马井—什邡中侏罗统沙溪庙组沉积相研究[D].成都:成都理工大学,2014.
YANG Xiangju.Research on depositional facies of the Middle Jurassic Shaximiao Formation in Majing-Shifang Area,Western Sichuan Depression[D].Chengdu:Chengdu University of Technology,2014.
[11] 朱宏权.川西坳陷沙溪庙组沉积相与储层评价研究[D].成都:成都理工大学,2009.
ZHU Hongquan.Research on depositional facies and reservoir evaluation of the Shaximiao Formation in Western Sichuan Depression[D].Chengdu:Chengdu University of Technology,2009.
[12] 安红艳,时志强,张慧娟,等.川西坳陷中段中侏罗统沙溪庙组储层砂岩物源分析[J].四川地质学报,2011,31(1):29-33.
AN Hongyan,SHI Zhiqiang,ZHANG Huijuan,et al.On material source of sandstone reservoir of the Middle Jurassic Shaximiao Formation in west Sichuan Depression[J].Acta Geologica Sichuan,2011,31(1):29-33.
[13] 李国新,徐胜林,陈洪德,等.川西坳陷中段中侏罗统上沙溪庙组层序岩相古地理及砂体展布特征[J].中国地质,2012,39(1):96-105.
LI Guoxin,XU Shenglin,CHEN Hongde,et al.Sedimentaryfacies and sand body distribution of the Middle Jurassic Upper Shaximiao Formation in the middle segment of western Sichuan Depression[J].Geology in China,2012,39(1):96-105.
[14] 陈义才,蒋裕强,郭贵安,等.川中地区上三叠统天然气成藏机理[J].天然气工业,2007,27(6):27-30.
CHEN Yicai,JIANG Yuqiang,GUO Guian,et al.Mechanism of natural gas accumulation in Upper Triassic in Central Sichuan Basin[J].Natural Gas Industry,2007,27(6):27-30.
[15] 田继军,姜在兴,李熙喆,等.川中上三叠统须二段厚层砂岩的成因及其对储层、气藏的控制[J].大庆石油地质与开发,2008,27(2):43-46.
TIAN Jijun,JIANG Zaixing,LI Xizhe,et al.Genesis of the thick sandstones of Xujiahe Formation Member II of Upper Triassic and the influences on reservoir and gas pool in Chuanzhong Region[J].Petroleum Geology & Oilfield Development in Daqing,2008,27(2):43-46.
[16] 陈辉,田景春,蒋裕强,等.川中地区上三叠统须二段和须四段储集砂体成因类型及其发育的主控因素[J].油气地质与采收率,2008,15(3):12-15,111.
CHEN Hui,TIAN Jingchun,JIANG Yuqiang,et al.Genetic types and main controlling factors of sandbodies in Second and Fourth Members of Xujiahe Formation,Upper Triassic,Central Sichuan Basin[J].Petroleum Geology and Recovery Efficiency,2008,15(3):12-15,111.
[17] 钱利军.川西北地区中、下侏罗统物质分布规律与沉积充填过程[D].成都:成都理工大学,2013.
QIAN Lijun.Regulation of sedimentary distribution and sedimentary filling process during Middle and Lower Jurassic in western and northern Sichuan,China[D].Chengdu:Chengdu University of Technology,2013.
[18] 谭万仓,侯明才,董桂玉,等.川西前陆盆地中侏罗统沙溪庙组沉积体系研究[J].东华理工大学学报(自然科学版),2008,31(4):336-343.
TAN Wancang,HOU Mingcai,DONG Guiyu,et al.Research on depositional system of Middle Jurassic Shaximiao Formation in western Sichuan Foreland Basin[J].Journal of East China Institute of Technology(Natural Science Edition),2008,31(4):336-343.