Research on the origin of lacustrine dolomitic reservoir in Jurassic Da'anzhai Formation of Sichuan Basin
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摘要:
四川盆地侏罗系大安寨段是典型的致密油发育层段，勘探开发成果揭示，大安寨储层岩性主要为介壳灰岩致密储层。侏罗系大安寨段致密油勘探开发成效引人关注，特别是近期川中南部侏罗系大安寨段滨浅湖相的GSTMX地区，大安寨段显示频繁，部署的GQ1H在大安寨段获得高产工业油流。根据对最新钻探的GQ1H井解剖表明，含云质岩具有更好的储集条件和含油气性，是储层“甜点”有利分布岩性。通过老井复查、岩心、岩屑、薄片、测井等综合分析表明，含云质储层岩性包括云质灰岩、灰质云岩和泥-粉晶云岩，储集空间主要为粒间、粒间溶孔和微裂缝，储层储集条件好，成像显示溶蚀孔洞发育，川中南部云化程度高于北部。根据碳氧同位素、X衍射、地层水特征以及古地形综合分析初步认为，四川盆地大安寨沉积时期虽然为淡水湖泊，但在古地形、古气候、沉积环境以及湖平面变化共同控制下，局部地区仍然发育一定规模的含云质储层，该认识为川中侏罗系大安寨段相对优质储层深化认识奠定了坚实的地质基础。
Abstract:The Jurassic Da'anzhai Formation in the Sichuan Basin is a typical layer characterized by the development of tight oil. Exploration results reveal that the Daanzhai reservoir is mainly lacustrine limestone reservoir in lithology. The tight oil exploration results of Jurassic Daanzhai Formation has aroused much interest; especially during the recent exploration of Duan shore shallow lake facies in the GST-MX area of southern Sichuan, Da'anzhai Formation was frequently seen, and the deployment of GQ1H led to the obtaining of high-yield industrial oil flow in Da'anzhai Formation. The newly drilled well GQ1H indicates that dolomitic rocks have favorable reservoir condition and oil potential, and is also the lithology of "sweet spot" distribution. Comprehensive analysis of old-wells'reinvestigation data, cores, cuttings, rock chips and well logging shows that the lithology of dolomitic reservoir includes dolomitic limestone, limy dolomite and micrite-crystal powder dolomite, the reservoir space is mainly composed of intergranular pores, interparticle dissolution pores and microfractures, and the dolomitic reservoir has the good reservoir condition. The imaging logging displays the development of solution pores, and the degree of dolomitization in the southern part of central Sichuan basin is higher than that in the northern part. According to the comprehensive analysis of carbon and oxygen isotopes, X-ray diffraction, characteristics of formation water and the ancient landform, the authors preliminarily hold that, although Da'anzhai Formation in the Sichuan basin was a freshwater lake during the deposition of Da'anzhai Formation, there still existed some dolomitic reservoirs locally under the control of ancient landform, ancient climate, sedimentary environment and change of lake-level. The understanding obtained by the authors has laid a solid foundation for deepening the understanding of the relatively high quality Jurassic reservoir in central Sichuan Province.
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表 1 GQ1H井侏罗系大安寨段岩石化学分析数据 (%)
Table 1. Analytical data of rock in Jurassic Da'anzhai Formation fromWell GQ1H
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表 2 川中南部地区侏罗系大安寨段白云岩成分及白云石参数特征
Table 2. Characteristics of dolomite composition and dolomite parameters in Jurassic Da'anzhai Formation in the north of central Sichuan Basin
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Drummond C N. 1993. Effect of regional topography and hydrology on the lacustrine isotopic record of Miocene paleoclimate in Rocky Mountains[J]. Palaeogeogr, Palaeoclimatol, Palaeoecal, 101:67-79. doi: 10.1016/0031-0182(93)90152-9
Dai Chaocheng, Zheng Rongcai, Wen Huaguo. 2008.Origin of lacustrine dolomite in the Paleogene Shahejie Formation of LiaoDongwan Basin[J]. JournalL of ChengDu University of Technology (Science & Technology Edition), 35(2):187-193(in Chinese with English abstract).
Guo Qiang, Zhong Dakang, Zhang Fangdong. 2012. Origin of the Lower Cretaceous lacustrine dolostones in Baiyinchagan sag of Erlian basin, Inner Mongolia[J]. Jounal of Palaeo Geography, 14(1):59-68(in Chinese with English abstract).
Jiang Yuqiang, Qi Lin, Deng Haibo. 2010. Hydrocarbon accumulation conditions and exploration potentials of the Jurassic reservoirs in the Sichuan Basin[J]. Natural Gas Industry, 30(3):22-26(in Chinese with English abstract).
Kelts K, Talbot M R. 1990. Lacustrine carbonates as geochemical archives of environmental change and biotic/abiotic interactions[C]//Tilzer M M, Serruya C (eds.). Ecological Structure and Function in Large Lakes. Madison Wis, Science Tech, 290-317.
Liang Digang, Ran Longhui, Dai Danshe. 2011. A re-recognition of the prospecting potential of Jurassic large-area and nonconventional oils in the central-northern Sichuan Basin[J]. Acta Petrolei Sinica, 32(1):8-17(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYXB201101003.htm
Li Junliang. 2002. The Research on rolling exploration reservoir and objective appraisal[R]. Central Sichuan Basin Oil & Gas Mining Filde, PetroChina Southwest Oil & Gasfield Company, 66-89(in Chinese with English abstract).
Li Quanbai. 1976. The geological summary of Liu-Shu area in GuiHua Oil filde[R]. Central Sichuan Basin Oil & Gas Mining Filde, PetroChina Southwest Oil & Gasfield Company, 90-99(in Chinese with English abstract).
Li Hong, Liu Yiqun Liang Hao. origin of lacustrine dolostones of the Middle Permian Lu cao gou Formation in San tang hu Basin of Xin jiang[J]. Jounal of Palaeo Geography, 14(1):45-58(in Chinese with English abstract).
Luo Yuhong. 1999. The summary of experience in Reservoir exploration and analysis of typical reservoir[R]. Central Sichuan Basin Oil & Gas Mining Filde, PetroChina Southwest Oil & Gasfield Company, 55-63(in Chinese with English abstract).
Liao Jing, Dong Zhaoxiong, Zhai Guiyun. 2008. Feature of oligocene Shahejie Lower-1st Member lacustrine dolostone in Qikou Depression, Bohaiwan basin, and difference of it from marine dolostone[J]. Marine Origin Petroleum Geology, (1):18-24(in Chinese with English abstract).
Peng Zhimin, Liao Zhongli, Chen Ming. 2008. Origin of the Jurassic dolostone reservoirs in the Qiang tang Basin on the QinghaiXizang Plateau[J]. SedimentaryGeology and Tethyan Geology, 28(4):1-6(in Chinese with English abstract).
Wang Mudao. 1980. The experimental conclusion of water-flooding in Da'anzhai's Fractured limestone reservoir in the Sichuan Basin[R].Central Sichuan Basin Oil & Gas Mining Filde, PetroChina Southwest Oil & Gasfield Company, 45-69(in Chinese with English abstract).
Wang Shaoyong, Li Jianzhong, Li Denghua. 2013. The potential of tight oil resource in Jurassic Da'anzhai Formation of the Gongshanmiao oil field, central Sichuan Basin[J]. Geology in China, 40(2):477-486(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DIZI201302013.htm
Wang Dongsheng. 1990. Origin of the yellow brine and the black brine in Sichuan Basin[J]. Bulletin of The Chinese Academy of Geological Sciences, 20:44-48(in Chinese with English abstract).
Wang Yujun. 2010. Feasibility analysis of discovering large oilfield in Si-chuan Basin[J]. Oil Forum, (1):28-31(in Chinese with English abstract).
Zou Caineng, Tao Shizhen, Yuan Xuanjun. 2009. The Formation conditions and Distribution charaeteristics of continuous petroleum accumulations[J]. Acta Petrolei Sinica, 30(3):324-331(in Chinese with English abstract).
Zhong Hua, Zhang Shiqiang, Lu Xiaofeng. 2009. Development logs of Gui-Hua Oil filde[R].Central Sichuan Basin Oil & Gas Mining Filde, PetroChina Southwest Oil & Gasfield Company, 25-36(in Chinese with English abstract).
Zhang Jian, Gu Mei. 2001. The Research on the 10th Five-Year Plan production adjustment scheme in Gui-Hua Oil filde[R]. Central Sichuan Basin Oil & Gas Mining Filde, PetroChina Southwest Oil & Gasfield Company, 72-89(in Chinese with English abstract).
戴朝成, 郑荣才, 文华国.2008.辽东湾盆地沙河街组湖相白云岩成因研究[J].成都理工大学学报 (自然科学版), 2008, 35(2):187-193. http://www.cnki.com.cn/Article/CJFDTOTAL-CDLG200802014.htm
郭强, 钟大康, 张放东. 2012.内蒙古二连盆地白音查干凹陷下白至统湖相白云岩成因[J].古地理学报, 14(1):59-68. doi: 10.7605/gdlxb.2012.01.006
蒋裕强, 漆麟, 邓海波. 2010.四川盆地侏罗系油气成藏条件及勘探潜力[J].天然气工业, 30(3):22-26. http://www.cnki.com.cn/Article/CJFDTOTAL-TRQG201003009.htm
梁狄刚, 冉隆辉, 戴弹申. 2011.四川盆地中北部侏罗系大面积非常规石油勘探潜力的再认识[J].石油学报, 32(1):8-17. doi: 10.7623/syxb201101002
李俊良. 2002. 川中西部地区侏罗系大安寨段油藏滚动勘探目标评价研究[R]. 中国石油西南油气田分公司川中油气矿. 66-89.
李全柏. 1976. 桂花油田柳树地区地质小结[R]. 中国石油西南油气田分公司川中油气矿. 90-99.
李红, 柳益群, 梁浩.2012.新疆三塘湖盆地中二叠统芦草沟组湖相白云岩成因[J].古地理学报, 14(1):45-58. doi: 10.7605/gdlxb.2012.01.005
廖静, 董兆雄, 翟桂云. 2008.渤海湾盆地歧口凹陷沙河街组一段下亚段湖相白云岩及其与海相白云岩的差异[J].海相油气地质, (1):18-24. http://www.cnki.com.cn/Article/CJFDTOTAL-HXYQ200801005.htm
罗玉宏. 1999. 四川盆地川中侏罗系大安寨油藏勘探经验总结及典型油藏分析[R]. 中国石油西南油气田分公司川中油气矿. 55-63.
彭智敏, 廖忠礼, 陈明. 2008.青藏高原羌塘盆地侏罗系白云岩的特征及其成因[J].沉积与特提斯地质, 28(4):1-6. http://www.cnki.com.cn/Article/CJFDTOTAL-TTSD200804001.htm
汪慕道. 1980. 桂花油田大安寨裂缝性灰岩油藏注水开发矿场试验总结报告[R]. 中国石油西南油气田分公司川中油气矿. 45-69.
汪少勇, 李建忠, 李登华.2013.川中地区公山庙油田侏罗系大安寨段致密油资源潜力分析[J].中国地质, 40(2):477-486. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20130212&flag=1
王东升.1990.四川盆地黄卤与黑卤的起源[J].中国地质科学院院报, 20:44-48. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXB199001012.htm
王毓俊. 2010.四川盆地找到大油田的可能性分析[J].石油科技论坛, (1):28-31. http://www.cnki.com.cn/Article/CJFDTOTAL-SYKT201001011.htm
邹才能, 陶士振, 袁选俊.2009.连续型油气藏形成条件与分布特征[J].石油学报, 30(3):324-331. doi: 10.7623/syxb200903002
钟华, 张仕强, 陆小锋. 2009. 桂花油田开发志[R]. 中国石油西南油气田川中油气矿, 25-36.
张健, 古梅. 2001. 桂花油田"十五"生产调整方案研究[R]. 中国石油西南油气田川中油气矿. 72-89.
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