川北地区下寒武统龙王庙组混积特征及其对储层的影响

王瀚; 李智武; 刘树根; 宋金民; 冉波; 叶玥豪; 韩雨樾; 姜巽

doi:10.11781/sysydz201905663

川北地区下寒武统龙王庙组混积特征及其对储层的影响

doi: 10.11781/sysydz201905663

成都理工大学油气成藏地质及开发工程国家重点实验室, 成都 610059

基金项目:

“十三五”国家科技重大专项（2017ZX05005003-007）和国家重点基础研究发展计划（973计划）项目（2012CB214805）联合资助。

详细信息

作者简介:
王瀚(1987-),男,博士研究生,从事沉积储层地质研究。E-mail:wanghan05@126.com。

通讯作者:
李智武(1976-),男,博士,教授,从事构造地质及油气地质研究。E-mail:lizhiwu06@mail.cdut.edu.cn。

中图分类号: TE121.3
计量
- 文章访问数: 718
- HTML全文浏览量: 105
- PDF下载量: 129
- 被引次数: 0
出版历程
- 收稿日期: 2018-12-05
- 修回日期: 2019-07-25
- 刊出日期: 2019-09-28

Characteristics of mixed sediments and influence on reservoir of Lower Cambrian Longwangmiao Formation, northern Sichuan Basin

State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Chengdu University of Technology, Chengdu, Sichuan 610059, China

摘要

摘要: 通过露头观察及室内薄片鉴定，将川北地区下寒武统龙王庙组混合沉积分为潮坪相相缘Ⅰ型、滩间海相相缘Ⅱ型、颗粒滩相相缘Ⅲ型及开阔海相事件Ⅰ型、开阔海相事件Ⅱ型混积。混积作用最强的潮坪相相缘Ⅰ型主要分布于龙王庙组底部、中部和顶部；而横向上，相缘型混积主要分布于西侧靠近陆源区的内缓坡地区，事件型混积主要分布于东侧远离陆源区的中（外）缓坡地区。川北龙王庙组整体表现为混积作用背景下北西—南东向碳酸盐岩缓坡沉积。混合沉积不利于颗粒滩的原始沉积，且较强混积作用减弱颗粒白云石之间的胶结作用，使得颗粒间抗压实效应降低，不利于原始孔隙的形成和保存；同时，石英稳定性较强，在酸性环境下难以发生溶蚀作用，降低了成岩中—晚期有机酸对储层的改善效果。川北地区龙王庙组不具备发育大规模颗粒滩叠加溶蚀型优质储层的地质条件。
- 混合沉积 /
- 相模式 /
- 储层 /
- 龙王庙组 /
- 下寒武统 /
- 川北地区
Abstract: Through outcrop observation and thin section identification, the mixed sediments of the Lower Cambrian Longwangmiao Formation in the northern Sichuan Basin are divided into tidal flat facies margin Ⅰ type, intershoal sea facies margin Ⅱ type, shoal facies margin Ⅲ type, open marine punctuated Ⅰ type and open marine punctuated Ⅱ type. The tidal flat facies marginⅠ type with the strongest mixing effect is mainly distributed in the bottom, middle and top of the Longwangmiao Formation. Laterally, the facies mixing sedimentation mainly distributes in the inner ramp which is close to the provenance on the west side, while the punctuated mixing sedimentation mainly distributes in the middle-outer ramp which is far away from the provenance on the east side. The Longwangmiao Formation in northern Sichuan Basin is characterized by NW-SE direction ramp sedimentation under a mixed sedimentation background. The mixed sedimentation is not conducive for the formation of a granular beach. The strong mixed deposits weakened the cementation between grain dolomites, leading to poorer compaction resistance, which is unfavorable for the formation and preservation of primary pores. Meanwhile, quartz has better stability and is difficult to dissolve in an acidic environment, which reduces the reservoir improvement by organic acids during the middle and late diagenetic stages. Therefore, the Lower Cambrian Longwangmiao Formation in northern Sichuan Basin does not have a lot of advantages to form high quality reservoir which is dominated by shoal deposits with obvious dissolution.
- mixed sedimentation /
- facies model /
- reservoir /
- Longwangmiao Formation /
- Lower Cambrian /
- northern Sichuan Basin

HTML全文

参考文献(28)

[1]	MOUNT J F.Mixing of siliciclastic and carbonate sediments in shallow shelf environments[J].Geology,1984,12(7):432-435.
[2]	ZONNEVELD J P,GINGRAS M K,BEATTY T W,et al.Mixed siliciclastic/carbonate systems[J].Developments in Sedimento-logy,2012,64:807-833.
[3]	ZELLER M,VERWER K,EBERLI G P,et al.Depositional controls on mixed carbonate-siliciclastic cycles and sequences on gently inclined shelf profiles[J].Sedimentology,2015,62(7):2009-2037.
[4]	冯进来,曹剑,胡凯,等.柴达木盆地中深层混积岩储层形成机制[J].岩石学报,2011,27(8):2461-2472. FENG Jinlai,CAO Jian,HU Kai,et al.Forming mechanism of middle-deep mixed rock reservoir in the Qaidam Basin[J].Acta Petrologica Sinica,2011,27(8):2461-2472.
[5]	LV Zhengxiang,ZHANG Shunli,YIN Chao,et al.Features and genesis of Paleogene high-quality reservoirs in lacustrine mixed siliciclastic-carbonate sediments,central Bohai Sea,China[J].Petroleum Science,2017,14(1):50-60.
[6]	KLEIPOOL L M,REIJMER J J G,BÁDENAS B,et al.Variations in petrophysical properties along a mixed siliciclastic carbonate ramp (Upper Jurassic,Ricla,NE Spain)[J].Marine and Petroleum Geology,2015,68:158-177.
[7]	周进高,房超,季汉成,等.四川盆地下寒武统龙王庙组颗粒滩发育规律[J].天然气工业,2014,34(8):27-36. ZHOU Jin'gao,FANG Chao,JI Hancheng,et al.A development rule of Lower Cambrian Longwangmiao grain beaches in the Sichuan Basin[J].Natural Gas Industry,2014,34(8):27-36.
[8]	沈安江,陈娅娜,潘立银,等.四川盆地下寒武统龙王庙组沉积相与储层分布预测研究[J].天然气地球科学,2017,28(8):1176-1190. SHEN Anjiang,CHEN Ya'na,PAN Liyin,et al.The facies and porosity origin of reservoirs:case studies from Longwangmiao Formation of Cambrian,Sichuan Basin,and their implications to reservoir prediction[J].Natural Gas Geoscience,2017,28(8):1176-1190.
[9]	邢梦妍,胡明毅,高达,等.高磨地区龙王庙组滩相储层特征及主控因素[J].桂林理工大学学报,2017,37(1):37-46. XING Mengyan,HU Mingyi,GAO Da,et al.Characteristics and main controlling factors of Lower Cambrian Longwangmiao Formation beach-facies reservoirs in Gaoshiti-Moxi area,central Sichuan Basin[J].Journal of Guilin University of Technology,2017,37(1):37-46.
[10]	刘树根,宋金民,赵异华,等.四川盆地龙王庙组优质储层形成与分布的主控因素[J].成都理工大学学报(自然科学版)2014,41(6):657-670. LIU Shugen,SONG Jinmin,ZHAO Yihua,et al.Controlling factors of formation and distribution of Lower Cambrian Longwangmiao Formation high-quality reservoirs in Sichuan Basin,China[J].Journal of Chengdu University of Technology (Science & Technology Edition),2014,41(6):657-670.
[11]	周进高,徐春春,姚根顺,等.四川盆地下寒武统龙王庙组储集层形成与演化[J].石油勘探与开发,2015,42(2):158-166. ZHOU Jingao,XU Chunchun,YAO Genshun,et al.Genesis and evolution of Lower Cambrian Longwangmiao Formation reservoirs,Sichuan Basin,SW China[J].Petroleum Exploration and Development,2015,42(2):158-166.
[12]	王頔,胡明毅,高达,等.川中磨溪-高石梯地区下寒武统龙王庙组层序格架内滩体的发育演化特征及对储层的控制[J].海相油气地质,2017,22(1):47-54. WANG Di,HU Mingyi,GAO Da,et al.Development and evolution of inner-platform shoal with control on the reservoir in a sequence framework of Lower Cambrian Longwangmiao Formation,Moxi-Gaoshiti area,central Sichuan Basin[J].Marine Origin Petroleum Geology,2017,22(1):47-54.
[13]	宋金民,刘树根,赵异华,等.川中地区中下寒武统风暴岩特征及沉积地质意义[J].石油学报,2016,37(1):30-42. SONG Jinmin,LIU Shugen,ZHAO Yihua,et al.Characteristics and sedimentary geological significances of Lower-Middle Cambrian tempestites in central Sichuan Basin[J].Acta Petrolei Sinica,2016,37(1):30-42.
[14]	汪明洲,成汉钧,陈祥荣,等.大巴山区寒武系的研究[J].西安地质学院学报,1989,11(4):1-9. WANG Mingzhou,CHENG Hanjun,CHEN Xiangrong,et al.A study of the Cambrian system of the Dabashan region[J].Journal of Xi'an College of Geology,1989,11(4):1-9.
[15]	陈旭,徐均涛,成汉钧,等.论汉南古陆及大巴山隆起[J].地层学杂志,1990,14(2):81-116. CHEN Xu,XU Juntao,CHENG Hanjun,et al.On the Hannan Old Land and Dabashan Uplift[J].Journal of Stratigraphy,1990,14(2):81-116.
[16]	成汉钧,汪明洲,陈祥荣,等.论大巴山隆起的镇巴上升[J].地层学杂志,1992,16(3):196-199. CHENG Hanjun,WANG Mingzhou,CHEN Xiangrong,et al.The discussion of Zhenba Upthrow of Dabashan Uplift[J].Journal of Stratigraphy,1992,16(3):196-199.
[17]	沈骋,谭秀成,周博,等.川北旺苍唐家河剖面仙女洞组灰泥丘沉积特征及造丘环境分析[J].地质论评,2016,62(1):202-214. SHEN Cheng,TAN Xiucheng,ZHOU Bo,et al.Construction of mud mounds and their forming models of Xiannudong Formation in Tangjiahe section of Wangcang,North Sichuan[J].Geological Review,2016,62(1):202-214.
[18]	四川省地质局.1:20万南江幅区域地质测量报告[R].北京:全国地质资料馆,1965. Bureau of Geology and Mineral Resources of Sichuan Province.Regional geology report of Nanjiang city (1:200000)[R].Beijing:National Geological Archives,1965.
[19]	谷志东,殷积峰,姜华,等.四川盆地西北部晚震旦世-早古生代构造演化与天然气勘探[J].石油勘探与开发,2016,43(1):1-11. GU Zhidong,YIN Jifeng,JIANG Hua,et al.Tectonic evolution from Late Sinian to Early Paleozoic and natural gas exploration in the northwestern Sichuan Basin,SW China[J].Petroleum Exploration and Development,2016,43(1):1-11.
[20]	ĆOSOVIĆ V,DROBNE K,MORO A.Paleoenvironmental model for Eocene foraminiferal limestones of the Adriatic carbonate platform (Istrian Peninsula)[J].Facies,2004,50(1):61-75.
[21]	李智武,冉波,肖斌,等.四川盆地北缘震旦纪-早寒武世隆-坳格局及其油气勘探意义[J].地学前缘,2019,26(1):59-85. LI Zhiwu,RAN bo,XIAO Bin,et al.Sinian to Early Cambrian uplift-depression framework along the northern margin of the Sichuan Basin,central China and its implications for hydrocarbon exploration[J].Earth Science Frontiers,2019,26(1):59-85.
[22]	FLVGEL E.Microfacies of carbonate rocks:analysis,interpretation and application[M].Berlin:Springer,2010.
[23]	WILMSEN M,FVRSICH F T,SEYED-EMAMI K,et al.Facies analysis of a large-scale Jurassic shelf-lagoon:the Kamar-e-Mehdi Formation of east-central Iran[J].Facies,2010,56(1):59.
[24]	张满郎,谢增业,李熙喆,等.四川盆地寒武纪岩相古地理特征[J].沉积学报,2010,28(1):128-139. ZHANG Manlang,XIE Zengye,LI Xizhe,et al.Characteristics of lithofacies paleogeography of Cambrian in Sichuan Basin[J].Acta Sedimentologica Sinica,2010,28(1):128-139.
[25]	杨威,谢武仁,魏国齐,等.四川盆地寒武纪-奥陶纪层序岩相古地理、有利储层展布与勘探区带[J].石油学报,2012,33(S2):21-34. YANG Wei,XIE Wuren,WEI Guoqi,et al.Sequence lithofacies paleogeography,favorable reservoir distribution and exploration zones of the Cambrian and Ordovician in Sichuan Basin,China[J].Acta Petrolei Sinica,2012,33(S2):21-34.
[26]	范明,胡凯,蒋小琼,等.酸性流体对碳酸盐岩储层的改造作用[J].地球化学,2009,38(1):20-26. FAN Ming,HU Kai,JIANG Xiaoqiong,et al.Effect of acid fluid on carbonate reservoir reconstruction[J].Geochimica,2009,38(1):20-26.
[27]	伏美燕,张哨楠.混积型碳酸盐岩中石英的成岩作用及其与储层的关系[J].石油天然气学报,2011,33(12):50-54. FU Meiyan,ZHANG Shaonan.The relationship between quarts and reservoir and the diagenesis of quarts in mixed sedimentary carbonate[J].Journal of Oil and Gas Technology,2011,33(12):50-54.
[28]	SCHWARZ E,VEIGA G D,TRENTINI G Á,et al.Climatically versus eustatically controlled,sediment-supply-driven cycles:carbonate-siliciclastic,high-frequency sequences in the Valangi-nian of the Neuquén Basin (Argentina)[J].Journal of Sedimentary Research,2016,86(4):312-335.