油气地质

川西北厚坝地区油砂储层特征及成岩作用分析

  • 王涛
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  • 1. 西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500; 2.西南石油大学资源与环境学院,四川成都610500; 3.中海石油(中国)有限公司天津分公司勘探开发研究院,天津300450;4.中国石油川庆钻探工程公司地质勘探开发研究院,四川成都610051
杨雪飞(1988-),女,西南石油大学在读博士研究生,研究方向为沉积及储层地质学。地址:(610500)四川省成都市新都区西南石油大学油气藏地质及开发工程国家重点实验室。E-mail:yangxf_queen@163.com

网络出版日期: 2013-09-26

基金资助

四川省重点学科建设项目(编号:SZD0414)与西南石油大学研究生创新基金“厚坝地区沙溪庙组油砂岩成因分析”(编号:GIFSS0711)联合资助。

Oil sand reservoir characteristics and diagenesis in Houba area, northwestern Sichuan

  • WANG Tao
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  • 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University,Chengdu 610500, China; 2. College of Resource and Environment, Southwest Petroleum University, Chengdu 610500, China; 3. Research Institute of Exploration and Development, CNOOC Tianjin Company, Tianjin 300450, China; 4. Geological Exploration and Development Research Institute, Chuanqing Drilling Exploration Engineering, PetroChina, Chengdu 610051, China

Online published: 2013-09-26

摘要

龙门山断裂带前缘厚坝地区中侏罗统沙溪庙组油砂矿是一类典型的非常规油气资源。据野外露头 和钻井岩心的宏观与微观研究,探讨了厚坝地区油砂的储层特征及成岩作用特征。研究认为,储层岩石类 型以中—粗岩屑石英砂岩和岩屑砂岩为主;储集空间以残余粒间孔及粒间溶孔为主,粒内溶孔较少,裂缝 较发育,具有中高孔、中渗的特点;储层成岩作用主要包括压实作用、胶结作用及溶蚀作用。溶蚀作用与绿 泥石胶结作用对孔隙的保存均起积极作用,其中溶蚀作用多发生于不稳定颗粒边缘及颗粒内部,形成大 量次生溶孔;绿泥石胶结作用可提高岩石的抗压实强度,从而使原生孔隙得以保存。压实作用与钙质及硅 质胶结作用对孔隙均起破坏作用,为储层形成的不利因素。

本文引用格式

王涛 . 川西北厚坝地区油砂储层特征及成岩作用分析[J]. 岩性油气藏, 2013 , 25(5) : 59 -64 . DOI: 10.3969/j.issn.1673-8926.2013.05.010

Abstract

Oil sand of Middle Jurassic Shaximiao Formation in Houba area in the frontier Longmen Mountain is one of the most typically important unconventional resources. Based on crop and core observation, this paper discussed the reservoir characteristics of oil sand and its diagenesis in Houba area. The result shows that the reservoir sandstones are mainly medium-coarse grained sublitharenite and litharenite, the main pore types are residual intergranular pores and intergranular dissolved pores, and fractures are common. The sandstone reservoir has the characteristics of medium high porosity and medium permeability. Diagenesis includes compaction, cementation and dissolution, and dissolution and chlorite cementation are constructive for the preservation of pores. Dissolution generally developed within grain and boundary of unstable grain, and formed great number of secondary dissolved pores. Chlorite cementation can improve the rock compaction resistance. Compaction, carbonate cementation and quartz overgrowth cause damages to the reservoir pores.

参考文献

[1] 关德师.中国非常规油气地质[M].北京:石油工业出版社,1995:35-45.
[2] Higley D K,Lewan M D,Roberts L N R,et al. Timing and petroleum sources for the Lower Cretaceous Mannville Group oil sands of northern Alberta based on 4-D modeling [J]. AAPG Bulletin,2009,93(2):203-230.
[3] Wightman D M. Canada’s oil sands and heavy oil:the future is now[C]. AAPG Annual Meeting,Salt Lake City,Utah,2003.
[4] 刘虹强,孙燕,王祝彬,等.准噶尔盆地风城油砂矿床储层特征及成因分析[J].中国地质,2008,35(6):1307-1314.
[5] 戴鸿鸣,刘文龙,杨跃明,等.龙门山北段山前带侏罗系油砂岩成因研究[J].石油实验地质,2007,29( 6):604-608.
[6] 徐世琦,曾庆,唐大海,等.江油厚坝油砂岩成藏条件分析[J].天然气勘探与开发,2005,28(3):1-4.
[7] 孙晓猛,许强伟,王英德,等.川西北龙门山冲断带北段油砂成藏特征及其主控因素[J].吉林大学学报:地球科学版,2010,40(4):886-896.
[8] 单玄龙,罗洪浩,孙晓猛,等.四川盆地厚坝侏罗系大型油砂矿藏的成藏主控因素[J].吉林大学学报:地球科学版,2010,40(4):897-904.
[9] 童崇光.四川盆地构造演化与油气聚集[M].北京:地质出版社,1992:10-34.
[10] 谢邦华,王兰生,张鉴,等.龙门山北段烃源岩纵向分布及地化特征[J],天然气工业,2003,23(5): 21-24.
[11] 周文,邓虎成,邱东洲,等.川西北天井山构造泥盆系古油藏的发现及意义[J].成都理工大学学报:自然科学版,2007,34(4):413-417.
[12] 郑浚茂,庞明.碎屑储集岩的成岩作用研究[M].武汉:中国地质大学出版社,1989:69-77.
[13] Anjos S M C,De Ros L F,Silva C M A. Chlorite authigenesis and porosity preservation in the Upper Cretaceous marine sandstones of the Santos Basin,offshore eastern Brazil[J]. International Association of Sedimentology,Special Publication,2003,34(2):291-316.
[14] Aagaard P,Jahren J S,Harstad A O,et al. Formation of graincoating chlorite in sandstones. Laboratory synthesized vs. natural occurrences[J]. Clay Minerals,2000:35:261-269.
[15] Berger A,Gier S,Krois P. Porosity-preserving chlorite cements in shallow-marine volcaniclastic sandstones:Evidence from Cretaceous sandstones of the Sawan gas field, Pakistan[J]. AAPG Bulletin,2009,93(5):595-615.
[16] 田建锋,陈振林,杨友运.自生绿泥石对砂岩储层孔隙的保护机理[J].地质科技情报,2008,27(4):49-54.
[17] 田建锋,陈振林,凡元芳,等.砂岩中自生绿泥石的产状、形成机制及其分布规律[J].矿物岩石地球化学通报,2008,27(2):200-205.
[18] 丁晓琪,张哨楠,葛鹏莉,等.鄂南延长组绿泥石环边与储集性能关系研究[J].高校地质学报,2010,16(2):247-254.
[19] Chen Guojun,Du Guichao,Zhang Gongcheng,et al. Chlorite cement and its effect on the reservoir quality of sandstones from the Panyu low-uplift, Pearl River Mouth Basin[J]. Petroleum Science, 2011,8:143-150.
[20] Peng Jun,Liu Jinku,Wang Yan,et al. Origin and controlling factors of chlorite coatings—An example from the reservoir of T3 x Group of the Baojie area,Sichuan Basin,China[J]. Petroleum Science,2009,6: 376-382.
[21] 张莹莹,黄思静.华庆地区长6 油层组方解石胶结物特征[J].岩性油气藏,2012,24(2):48-52.
[22] 黄思静,黄培培,王庆东,等.胶结作用在深埋藏砂岩孔隙保存中的意义[J].岩性油气藏,2007,19(3):7-13.
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