彭水及邻区五峰—龙马溪组成烃生物特征及意义

Abstract

Abstract:

By the observation of the organic microscopic composition and scanning electron microscopy of the whole rock, the black shale of the Upper Ordovician Wufeng-Lower Silurian Longmaxi formation in Pengshui and its adjacent core wells Microscopic observation, classification and research of hydrocarbon-forming organism systems. It is found that the main hydrocarbon-forming organism types of shale in Pengshui and its adjacent areas are alginite（phytoplankton, suspected sources, benthic algae, etc.）, animal debris（graptolite, radiolarian, chitinozoa and foraminifera） and bacteria, etc. Among them, the main hydrocarbon-forming organisms in organic-rich shale in Wufeng-Longmaxi formation（TOC≥2.0 %） are phytoplankton, suspected sources, bacteria, graptolite, etc., which have high abundance and differentiation. Hydrocarbon-forming organisms are the main source of oil and gas, meanwhile, the organic pores formed after its complex thermal evolution are the main carriers of shale gas occurrence. As there is a good coupling relationship between source and reservoir in the organic-rich shale section of Wufeng-Longmaxi formation, it is supposed to be the best geological sweet spot layer.

Key words: Pengshui and its adjacent area, Wufeng-Longmaxi formation, hydrocarbon-forming organism, combined characteristic, organic pore

CLC Number:

TE122

Zhenheng YANG,Changbo ZHAI,Mo DENG, et al. Characteristics and significance of hydrocarbon-forming organisms of Wufeng-Longmaxi formation in Pengshui and its adjacent areas[J]. Reservoir Evaluation and Development, 2019, 9(5): 40-44.

Figures/Tables 7

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References 19

[1]	CURTIS J B . Fractured shale-gas systems[J]. AAPG Bulletin, 2002,86(11):1921-1938.
[2]	JARVIE D M, HILL R J , RUBI E T E, et a1. UnconventionaI shale-gas systems: The Mississippian Barnett Shale of north central Texas as one model for thermogenic shale gas assessment[J]. AAPG Bulletin, 2007,91(4):475-499.
[3]	张金川, 金之钧, 袁明生 . 页岩气成藏机理和分布[J]. 天然气工业, 2004,24(7):15-18.
[4]	王志刚 . 涪陵页岩气勘探开发重大突破与启示[J]. 石油与天然气地质, 2015,36(1):1-6. doi: 10.11743/ogg20150101
[5]	郭旭升, 胡东风, 魏志红 , 等. 涪陵页岩气田的发现与勘探认识[J]. 中国石油勘探, 2016,21(3):24-37.
[6]	何希鹏, 张培先 . 渝东南彭水—武隆地区常压页岩气生产特征[J]. 油气地质与采收率, 2018,25(5):72-79.
[7]	靳凤仙, 邵龙义, 梁峰 , 等. 重庆地区下古生界页岩气聚集条件及有利区预测[J]. 古地理学报, 2017,19(2):341-352.
[8]	方志雄, 何希鹏 . 渝东南武隆向斜常压页岩气形成与演化[J]. 石油与天然气地质, 2016,37(6):819-827.
[9]	何希鹏, 高玉巧, 唐显春 , 等. 渝东南地区常压页岩气富集主控因素分析[J]. 天然气地球科学, 2017,28(4):654-664.
[10]	聂海宽, 汪虎 . 常压页岩气形成机制、分布规律及勘探前景——以四川盆地及其周缘五峰组—龙马溪组为例[J].石油学报, 2019,40(2):5-17+38.
[11]	秦建中, 申宝剑, 陶国亮 , 等. 优质烃源岩成烃生物与生烃能力动态评价[J]. 石油实验地质, 2014,36(4):465-472. doi: 10.11781/sysydz201404465
[12]	秦建中, 陶国亮, 腾格尔 , 等. 南方海相优质页岩的成烃生物研究[J]. 石油实验地质, 2010,32(3):262-269. doi: 10.11781/sysydz201003262
[13]	申宝剑, 仰云峰, 腾格尔 , 等. 四川盆地焦石坝构造区页岩有机质特征及其成烃能力探讨——以焦页1井五峰—龙马溪组为例[J]. 石油实验地质, 2016,38(4):480-488.
[14]	腾格尔, 申宝剑, 俞凌杰 , 等. 四川盆地五峰组—龙马溪组页岩气形成与聚集机理[J]. 石油勘探与开发, 2017,44(1):69-78.
[15]	郭旭升 . 南方海相页岩气“二元富集”规律——四川盆地及周缘龙马溪组页岩气勘探实践认识[J]. 地质学报, 2014,88(7):1209-1218.
[16]	赵建华, 金之钧 . 四川盆地五峰组—龙马溪组含气页岩中石英成因研究[J]. 天然气地球科学, 2016,27(2):377-386. doi: 10.11764/j.issn.16721926.2016.02.0377
[17]	李波文, 张金川, 党伟 , 等. 海相页岩与海陆过渡相页岩吸附气量主控因素及其差异性[J]. 科学技术与工程, 2017,17(11):44-51.
[18]	卢龙飞, 秦建中, 申宝剑 , 等. 川东南涪陵地区五峰—龙马溪组硅质页岩的生物成因及其油气地质意义[J]. 石油实验地质, 2016,38(4):460-465.
[19]	赵迪斐, 郭英海, 白万备 , 等. 沉积环境对优质页岩储层发育的控制作用——以渝东南地区龙马溪组为例[J]. 河南理工大学学报(自然科学版), 2018,37(4):37-47.

类型	显微组分		来源	成因
有形态组分	藻类体	结构藻类体	疑源类、浮游藻类	生物经过复杂热演化作用及凝胶化作用或者其他后期改造作用
		层状藻类体	浮游藻类
		宏观底栖藻类体	底栖藻
	动物碎屑	几丁石	几丁虫
		笔石体	笔石
		有孔虫残体	有孔虫
		几丁虫残体	几丁虫
		海绵骨针	海绵动物
	细菌	钙质、硅质细菌等	细菌等
无形态组分	无定形体		藻类	由藻类等低等水生生物降解形成
	微粒体		有机质、分散凝胶基质	有机质及沥青质体和矿物沥青基质热演化作用进而微粒化
	沥青		生烃、次生	液态烃类演化的残余充填于裂隙/孔隙中

Characteristics and significance of hydrocarbon-forming organisms of Wufeng-Longmaxi formation in Pengshui and its adjacent areas

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