玛页1井风城组页岩微观孔隙特征及其影响因素

doi:10.7657/XJPG20220101

摘要/Abstract

摘要：

玛湖凹陷风城组页岩微观孔隙特征的相关研究较薄弱,为确定孔隙对页岩油赋存和富集的影响,以玛湖凹陷北斜坡区玛页1井为对象,利用X射线衍射、扫描电镜、低温液氮吸附、高压压汞等,分析陆相页岩纳米级孔隙的发育特征及其影响因素。风城组页岩主要为长英质岩和碳酸盐岩,2类岩相的孔隙类型、形态及孔径分布基本一致,孔隙类型有无机孔、有机质孔和微裂缝,主要为溶蚀孔和微裂缝,发育平行板状狭缝、楔状孔隙及墨水瓶状孔等多种形态;孔隙以小孔为主,孔径分布为三峰型,主峰位于30~60 nm,孔隙连通性差。长英质岩的孔隙度及大孔隙发育程度高于碳酸盐岩,是相对优势岩相。石英、长石和白云石是孔隙发育程度的主控因素,对各尺度的孔隙具有均势贡献;黏土矿物促进微孔和小孔的发育,对中孔的影响较弱;有机质对孔隙发育的影响较小;无机矿物和有机质均是页岩孔隙度增大的有利因素。

关键词: 玛湖凹陷, 玛页1井, 风城组, 页岩, 微观孔隙, 影响因素, 岩相, 矿物组分

Abstract:

Less researches have been carried out on the microscopic pore characteristics of the Fengcheng formation shale in the Mahu sag. In order to determine the influence of pores on the occurrence and enrichment of shale oil, taking Well Maye-1 in the northwestern slope of the Mahu sag as a case, the characteristics of nano-pores and influencing factors in the continental shale were analyzed through X-ray diffraction, SEM, liquid nitrogen adsorption, high-pressure mercury intrusion, etc. The shale in the Fengcheng formation is mainly composed of felsic rock and carbonate rock. In the two kinds of rocks, the types, shapes and sizes of the pores are almost similar. There are inorganic pores, organic pores and micro-fractures, of which dissolution pores and micro-fractures are dominant. In addition, there are parallel plate-shaped fractures, wedge-shaped pores and ink-bottle-shaped pores. The pores are mainly small ones. The distribution of the pore size shows three peaks and the main peak ranges from 30 nm to 60 nm, and the pore connectivity is poor. The porosity of the felsic rock is higher than that of the carbonate rock, and macro-pores develop better in the felsic rock. So the felsic rock is more favorable for exploration. Quartz, feldspar and dolomite are controlling factors on pore development, and they have a balanced contribution to the pores of various sizes. Clay minerals are favorable for the development of micropores and small pores, but have a weaker impact on mesopores. Organic matter has a little effect on pore development. Both inorganic minerals and organic matter are favorable factors for the increase of shale porosity.

Key words: Mahu sag, Well Maye-1, Fengcheng formation, shale, microscopic pore, influencing factor, lithofacies, mineral composition

中图分类号:

TE122.23

杨帆, 孟鑫, 王先虎, 余佩蓉, 邵广辉, 陈火红. 玛页1井风城组页岩微观孔隙特征及其影响因素[J]. 新疆石油地质, 2022, 43(1): 1-10.

YANG Fan, MENG Xin, WANG Xianhu, YU Peirong, SHAO Guanghui, CHEN Huohong. Micro-Pore Characteristics and Influencing Factors of Fengcheng Formation Shale in Well Maye-1[J]. Xinjiang Petroleum Geology, 2022, 43(1): 1-10.

图/表 10

图1

图2

图3

图4

图5

表1

图6

图7

图8

图9

参考文献 25

[1]	支东明, 唐勇, 何文军, 等. 准噶尔盆地玛湖凹陷风城组常规-非常规油气有序共生与全油气系统成藏模式[J]. 石油勘探与开发, 2021, 48(1):38-51.
	ZHI Dongming, TANG Yong, HE Wenjun, et al. Orderly coexistence and accumulation models of conventional and unconventional hydrocarbons in Lower Permian Fengcheng formation,Mahu sag,Junggar basin[J]. Petroleum Exploration and Development, 2021, 48(1):38-51.
[2]	王小军, 杨智峰, 郭旭光, 等. 准噶尔盆地吉木萨尔凹陷页岩油勘探实践与展望[J]. 新疆石油地质, 2019, 40(4):402-413.
	WANG Xiaojun, YANG Zhifeng, GUO Xuguang, et al. Practices and prospects of shale oil exploration in Jimsar sag of Junggar basin[J]. Xinjiang Petroleum Geology, 2019, 40(4):402-413.
[3]	匡立春, 唐勇, 雷德文, 等. 准噶尔盆地二叠系咸化湖相云质岩致密油形成条件与勘探潜力[J]. 石油勘探与开发, 2012, 39(6):657-667.
	KUANG Lichun, TANG Yong, LEI Dewen, et al. Formation conditions and exploration potential of tight oil in the Permian saline lacustrine dolomitic rock,Junggar basin[J]. Petroleum Exploration and Development, 2012, 39(6):657-667.
[4]	何登发, 吴松涛, 赵龙, 等. 环玛湖凹陷二叠—三叠系沉积构造背景及其演化[J]. 新疆石油地质, 2018, 39(1):35-47.
	HE Dengfa, WU Songtao, ZHAO Long, et al. Tectono-depositional setting and its evolution during Permian to Triassic around Mahu sag,Junggar basin[J]. Xinjiang Petroleum Geology, 2018, 39(1):35-47.
[5]	张志杰, 袁选俊, 汪梦诗, 等. 准噶尔盆地玛湖凹陷二叠系风城组碱湖沉积特征与古环境演化[J]. 石油勘探与开发, 2018, 45(6):972-984.
	ZHANG Zhijie, YUAN Xuanjun, WANG Mengshi, et al. Alkaline-lacustrine deposition and paleoenvironmental evolution in Permian Fengcheng formation at the Mahu sag,Junggar basin,NW China[J]. Petroleum Exploration and Development, 2018, 45(6):972-984.
[6]	王小军, 王婷婷, 曹剑. 玛湖凹陷风城组碱湖烃源岩基本特征及其高效生烃[J]. 新疆石油地质, 2018, 39(1):9-15.
	WANG Xiaojun, WANG Tingting, CAO Jian. Basic characteristics and highly efficient hydrocarbon generation of alkaline-lacustrine source rocks in Fengcheng formation of Mahu sag[J]. Xinjiang Petroleum Geology, 2018, 39(1):9-15.
[7]	刘得光, 周路, 李世宏, 等. 玛湖凹陷风城组烃源岩特征与生烃模式[J]. 沉积学报, 2020, 38(5):946-955.
	LIU Deguang, ZHOU Lu, LI Shihong, et al. Characteristics of source rocks and hydrocarbon generation models of Fengcheng formation in Mahu depression[J]. Acta Sedimentologica Sinica, 2020, 38(5):946-955.
[8]	何文军, 钱永新, 赵毅, 等. 玛湖凹陷风城组全油气系统勘探启示[J]. 新疆石油地质, 2021, 42(6):641-655.
	HE Wenjun, QIAN Yongxin, ZHAO Yi, et al. Exploration implications of total petroleum system in Fengcheng formation,Mahu sag,Junggar basin[J]. Xinjiang Petroleum Geology, 2021, 42(6):641-655.
[9]	许琳, 常秋生, 冯玲丽, 等. 准噶尔盆地玛湖凹陷二叠系风城组页岩油储层特征及控制因素[J]. 中国石油勘探, 2019, 24(5):649-660.
	XU Lin, CHANG Qiusheng, FENG Lingli, et al. The reservoir characteristics and control factors of shale oil in Permian Fengcheng formation of Mahu sag,Junggar basin[J]. China Petroleum Exploration, 2019, 24(5):649-660.
[10]	李学良, 张奎华, 林会喜, 等. 准噶尔盆地西北缘二叠系风城组储层发育特征及油气富集因素[J]. 特种油气藏, 2019, 26(1):37-44.
	LI Xueliang, ZHANG Kuihua, LIN Huixi, et al. Reservoir characterization and hydrocarbon enrichment factors of the Permian Fengcheng formation in the northwestern margin of Junggar basin[J]. Special Oil and Gas Reservoirs, 2019, 26(1):37-44.
[11]	曹香妮, 姜振学, 朱德宇, 等. 川东北地区自流井组陆相页岩岩相类型及储层发育特征[J]. 天然气地球科学, 2019, 30(12):1 782-1 793.
	CAO Xiangni, JIANG Zhenxue, ZHU Deyu, et al. Lithofacies types and reservoir characteristics of continental shales of Ziliujing formation in northeastern Sichuan basin[J]. Natural Gas Geoscience, 2019, 30(12):1 782-1 793.
[12]	葸克来, 操应长, 朱如凯, 等. 吉木萨尔凹陷二叠系芦草沟组致密油储层岩石类型及特征[J]. 石油学报, 2015, 36(12):1 495-1 507.
	XI Kelai, CAO Yingchang, ZHU Rukai, et al. Rock types and characteristics of tight oil reservoir in Permian Lucaogou formation,Jimsar sag[J]. Acta Petrolei Sinica, 2015, 36(12):1 495-1 507.
[13]	徐传正, 冯烁, 田继军, 等. 龙马溪组岩相类型及其对孔隙特征的影响因素[J]. 西南石油大学学报(自然科学版), 2021, 43(1):51-60.
	XU Chuanzheng, FENG Shuo, TIAN Jijun, et al. Lithofacies types of Longmaxi formation and its influencing factors on pore characteristics[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2021, 43(1):51-60.
[14]	李廷微. 沾化凹陷页岩储层孔隙结构特征及其对含油性的控制[D]. 北京: 中国石油大学(北京), 2018.
	LI Tingwei. Pore structure characteristics of shale reservoirs and their effects on oil-bearing properties in the Zhanhua sag[D]. Beijing: China University of Petroleum (Beijing), 2018.
[15]	赵迪斐, 郭英海, 解德录, 等. 基于低温氮吸附实验的页岩储层孔隙分形特征[J]. 东北石油大学学报, 2014, 38(6):100-108.
	ZHAO Difei, GUO Yinghai, XIE Delu, et al. Fractal characteristics of shale reservoir pores based on nitrogen adsorption[J]. Journal of Northeast Petroleum University, 2014, 38(6):100-108.
[16]	郭春礼, 杨爽, 王安东, 等. 修武盆地下寒武统荷塘组海相页岩孔隙特征[J]. 新疆石油地质, 2020, 41(5):550-556.
	GUO Chunli, YANG Shuang, WANG Andong, et al. Pore characteristics of marine shale in Lower Cambrian Hetang formation in Xiuwu basin[J]. Xinjiang Petroleum Geology, 2020, 41(5):550-556.
[17]	马海洋, 夏遵义, 温庆志, 等. 渤海湾盆地沾化凹陷页岩微观孔隙特征实验研究[J]. 石油实验地质, 2019, 41(1):149-156.
	MA Haiyang, XIA Zunyi, WEN Qingzhi, et al. Micro-pore characteristics of shale in Zhanhua sag,Bohai Bay basin[J]. Petroleum Geology & Experiment, 2019, 41(1):149-156.
[18]	陈斐然, 魏祥峰, 刘珠江, 等. 四川盆地二叠系龙潭组页岩孔隙发育特征及主控因素[J]. 天然气地球科学, 2020, 31(11):1 593-1 602.
	CHEN Feiran, WEI Xiangfeng, LIU Zhujiang, et al. Pore development characteristics and main controlling factors of the Permian marine-continent transitional shale in the Sichuan basin[J]. Natural Gas Geoscience, 2020, 31(11):1 593-1 602.
[19]	卢双舫, 李俊乾, 张鹏飞, 等. 页岩油储集层微观孔喉分类与分级评价[J]. 石油勘探与开发, 2018, 45(3):436-444.
	LU Shuangfang, LI Junqian, ZHANG Pengfei, et al. Classification of microscopic pore-throats and the grading evaluation on shale oil reservoirs[J]. Petroleum Exploration and Development, 2018, 45(3):436-444.
[20]	马勇, 钟宁宁, 黄小艳, 等. 聚集离子束扫描电镜在页岩纳米级孔隙结构研究中的应用[J]. 电子显微学报, 2014, 33(3):251-256.
	MA Yong, ZHONG Ningning, HUANG Xiaoyan, et al. The application of focused ion beam scanning electron microscope(FIB-SEM) to the nanometer-sized pores in shales[J]. Journal of Chinese Electron Microscopy Society, 2014, 33(3):251-256.
[21]	王羽, 汪丽华, 王建强, 等. 基于聚焦离子束-扫描电镜方法研究页岩有机孔三维结构[J]. 岩矿测试, 2018, 37(3):235-243.
	WANG Yu, WANG Lihua, WANG Jianqiang, et al. Three-dimension characterization of organic matter pore structures of shale using focused ion beam-scanning electron microscope[J]. Rock and Mineral Analysis, 2018, 37(3):235-243.
[22]	赵迪斐, 郑文涛, 陈海兵, 等. 巢湖地区二叠系海相-过渡相页岩发育特征及影响因素[J]. 河南理工大学学报(自然科学版), 2021, 40(2):36-48.
	ZHAO Difei, ZHENG Wentao, CHEN Haibing, et al. Development characteristics and influencing factors of marine-transitional shale of Permian strata in Chaohu area[J]. Journal of Henan Polytechnic University (Natural Science), 2021, 40(2):36-48.
[23]	肖磊, 李卓, 杨有东, 等. 鄂尔多斯盆地延长组陆相页岩孔隙演化模式与影响因素[J]. 科学技术与工程, 2020, 20(20):8 122-8 132.
	XIAO Lei, LI Zhuo, YANG Youdong, et al. Pore evolution model and influencing factors of continental shale in Yanchang formation,Ordos basin[J]. Science Technology and Engineering, 2020, 20(20):8 122-8 132.
[24]	丁江辉, 张金川, 杨超, 等. 页岩有机孔成因演化及影响因素探讨[J]. 西南石油大学学报(自然科学版), 2019, 41(2):33-44.
	DING Jianghui, ZHANG Jinchuan, YANG Chao, et al. Formation evolution and influencing factors of organic pores in shale[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2019, 41(2):33-44.
[25]	霍建锋, 高健, 郭小文, 等. 川东地区龙马溪组页岩不同岩相孔隙结构特征及其主控因素[J]. 石油与天然气地质, 2020, 41(6):1 162-1 175.
	HUO Jianfeng, GAO Jian, GUO Xiaowen, et al. Characteristics and controlling factors of pore structures of various lithofacies in shales of Longmaxi formation,eastern Sichuan basin[J]. Oil & Gas Geology, 2020, 41(6):1 162-1 175.