可溶有机质对海陆过渡相页岩孔隙结构的定量影响

张琴; 梁峰; 庞正炼; 周尚文; 吝文

doi:10.11781/sysydz201805730

可溶有机质对海陆过渡相页岩孔隙结构的定量影响

doi: 10.11781/sysydz201805730

张琴^1,2,3,
梁峰^2,3, ,,
庞正炼²,
周尚文²,
吝文²

1. 中国地质大学(北京) 能源学院, 北京 100083;
2. 中国石油勘探开发研究院, 北京 100083;
3. 国家能源页岩气研发(实验)中心, 河北廊坊 065007

基金项目:

国家科技重大专项（201705035）资助。

详细信息

作者简介:
张琴(1985-),女,工程师,从事非常规油气地质研究。E-mail:412726132@qq.com。

通讯作者:
梁峰(1982-),男,博士,工程师,从事页岩气地质研究。E-mail:43615469@qq.com。

中图分类号: TE135
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出版历程
- 收稿日期: 2017-12-26
- 修回日期: 2018-07-25
- 刊出日期: 2018-09-28

Quantitative influence of soluble organic matter on pore structure in transitional shale

1. School of Energy Resources, China University of Geosciences(Beijing), Beijing 100083, China;
2. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
3. National Energy Shale Gas R & D(Experimental) Center, Langfang, Hebei 065007, China

摘要

摘要: 为了定量评价可溶有机质在海陆过渡相页岩中对孔隙结构的影响，选取辽河坳陷东部凸起海陆过渡相石炭系太原组典型页岩样品及其对应样品的等分样，进行双氧水氧化可溶有机质处理，并对处理前后的样品分别进行有机碳含量、XRD衍射和低压氮气吸附测试，基于测试结果系统对比，分析可溶有机质对海陆过渡相页岩孔隙结构的影响。结果表明，无机质矿物晶体结构稳定，双氧水对样品处理会消耗可溶有机质并氧化低价铁的化合物（黄铁矿、菱铁矿），使其含量减少，而对其他无机矿物影响较小；海陆过渡相页岩有机质孔整体不发育，可溶有机质以分散的形式充填在无机质矿物孔隙中，充填的可溶有机质占总有机质的53.06%～90.38%，且主要充填在大孔和中孔中；可溶有机质去除后，样品的孔容和比表面积均增加，其累积增加量占原始样品的72.74%～121.83%和32.8%～52.74%。原始有机质含量以及可溶有机质占比是影响样品处理后孔容和孔面积增量的主要影响因素。
- 孔隙结构 /
- 可溶有机质 /
- 定量影响 /
- 海陆过渡相 /
- 页岩 /
- 石炭系 /
- 渤海湾盆地
Abstract: Some representative samples of the Taiyuan Formation from the eastern uplift of the Liaohe Depression were selected in order to quantitatively evaluate the influence of organic matter on pore structure in transitional shale. Methods include quantitative mineral analysis by X-ray diffraction (XRD), Rock-Eval pyrolysis, and low pressure nitrogen adsorption. Analyses were performed on aliquot samples in the natural state and after soluble organic matter (SOM) removal by treatment with hydrogen peroxide (H₂O₂). The results indicated that the crystal structure of inorganic minerals is stable and the SOM removal process oxidizes and decreases or removes pyrite and siderite from the samples. All other inorganic phases remain unaffected. Compared with marine shale, OM pores are undeveloped, and the SOM filled in inorganic pores and matrix in the form of discrete particles or as laminations in the transitional shale samples. The cumulative fraction of total SOM actually held in inorganic pores ranges from 53.06% to 90.38%, and it mainly filled in mesopores and macropores. After SOM removal, the pore volume and pore surface area of samples both increase. The cumulative increase fraction of pore volume ranges from 72.14% to 121.83% and the cumulative increase fraction of pore area ranges from 32.8% to 52.74%. The original TOC content and the SOM proportions control pore volume and pore area increase.
- pore structure /
- SOM /
- quantitative influence /
- transitional facies /
- shale /
- Carboniferous /
- Bohai Bay Basin

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参考文献(28)

[1]	XIONG Fengyang,JIANG Zhenxue,LI Peng,et al.Pore structure of transitional shales in the Ordos Basin,NW China:effects of composition on gas storage capacity[J].Fuel,2017,206:504-515.
[2]	聂海宽,金之钧,边瑞康,等.四川盆地及其周缘上奥陶统五峰组-下志留统龙马溪组页岩气"源-盖控藏"富集[J].石油学报,2016,37(5):557-571. NIE Haikuan,JIN Zhijun,BIAN Ruikang,et al.The "source-cap hydrocarbon-controlling" enrichment of shale gas in Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation of Sichuan Basin and its periphery[J].Acta Petroleum Sinica,2016,37(5):557-571.
[3]	张林晔,李钜源,李政,等.湖相页岩有机储集空间发育特点与成因机制[J].地球科学(中国地质大学学报),2015,40(11):1824-1833. ZHANG Linye,LI Juyuan,LI Zheng,et al.Development characteristics and formation mechanism of intra-organic reservoir space in lacustrine shales[J].Earth Science(Journal of China University of Geosciences),2015,40(11):1824-1833.
[4]	PAN Lei,XIAO Xianming,ZHOU Qin.The influence of soluble organic matter on shale reservoir characterization[J].Journal of Natural Gas Geoscience,2016,1(3):243-249.
[5]	ZHU Yaling,VIETH-HILLEBRAND A,WILKE F D H,et al.Characterization of water-soluble organic compounds released from black shales and coals[J].International Journal of Coal Geology,2015,150-151:265-275.
[6]	彭钰洁,刘鹏,吴佩津.页岩有机质热演化过程中孔隙结构特征研究[J].特种油气藏,2018(5):1-5. PENG Yujie,LIU Peng,WU Peijin.Study on pore structure characteristics of shale organic matter during thermal evolution[J].Special Oil & Gas Reservoirs,2018(5):1-5.
[7]	车世琦.四川盆地涪陵地区页岩裂缝测井定量识别[J].特种油气藏,2017,24(6):72-78. CHE Shiqi.Quantitative identification of shale fractures with logging in Fuling of Sichuan Basin[J].Special Oil & Gas Reservoirs,2017,24(6):72-78.
[8]	向葵,胡文宝,严良俊,等.页岩气储层特征及地球物理预测技术[J].特种油气藏,2016,23(2):5-8,151. XIANG Kui,HU Wenbao,YAN Liangjun,et al.Shale gas reservoir characteristics and geophysical prediction techniques[J].Special Oil & Gas Reservoirs,2016,23(2):5-8,151.
[9]	彭钰洁,朱炎铭.挤压应力对川东渝南龙马溪组页岩孔隙的影响[J].特种油气藏,2016,23(2):132-135. PENG Yujie,ZHU Yanming.Effect of extrusion stress on porosity of Longmaxi Formation shale in East Sichuan and South Chongqing[J].Special Oil & Gas Reservoirs,2016,23(2):132-135.
[10]	蔡进功,卢龙飞,丁飞,等.烃源岩中黏土与可溶有机质相互作用研究展望[J].同济大学学报(自然科学版),2009,37(12):1679-1684. CAI Jingong,LU Longfei,DING Fei,et al.Significance of interaction between soluble organic matter and clay minerals in muddy source rocks[J].Journal of Tongji University (Natural Science),2009,37(12):1679-1684.
[11]	LIAO Zewei,GENG Ansong,GRACIAA A,et al.Saturated hydrocarbons occluded inside asphaltene structures and their geoche-mical significance,as exemplified by two Venezuelan oils[J].Organic Geochemistry,2006,37(3):291-303.
[12]	廖泽文,耿安松.沥青质轻度化学氧化降解产物中正庚烷可溶组分的特征[J].石油实验地质,2003,25(1):45-52. LIAO Zewen,GENG Ansong.Characteristics of n-heptane-soluble components in the mild chemical oxidation degraded products of asphaltene[J].Experimental Petroleum Geology,2003,25(1):45-52.
[13]	钱门辉,蒋启贵,黎茂稳,等.湖相页岩不同赋存状态的可溶有机质定量表征[J].石油实验地质,2017,39(2):278-286. QIAN Menhui,JIANG Qigui,LI Maowen,et al.Quantitative characterization of extractable organic matter in lacustrine shale with different occurrences[J].Petroleum Geology & Experiment,2017,39(2):278-286.
[14]	彭清华,杜佰伟,谢尚克,等.羌塘盆地昂达尔错地区侏罗系烃源岩生物标志物特征及其指示意义[J].石油实验地质,2017,39(3):370-376. PENG Qinghua,DU Baiwei,XIE Shangke,et al.Biomarker characteristics of Jurassic source rocks in Angdarco area in Qiangtang Basin and their significance[J].Petroleum Geology & Experiment,2017,39(3):370-376.
[15]	汪双清,沈斌,孙玮琳.稠油开采过程中储层内有机质分异研究[J].特种油气藏,2011,18(3):112-115,141. WANG Shuangqing,SHEN Bin,SUN Weilin.Study on differentiation of organic matter in heavy oil reservoirs during development process[J].Special Oil & Gas Reservoirs,2011,18(3):112-115,141.
[16]	朱雷,朱丹,马军,等.沉积物中可溶有机质氯仿抽提低毒性替代试剂的研究[J].石油天然气学报,2012,34(3):55-70. ZHU Lei,ZHU Dan,MA Jun,et al.The low toxic substitute reagent for chloroform in the extracted soluble organic matter of sediments[J].Journal of Oil and Gas Technology,2012,34(3):55-70.
[17]	陆现彩,胡文宣,符琦,等.烃源岩中可溶有机质与粘土矿物结合关系:以东营凹陷沙四段低熟烃源岩为例[J].地质科学,1999,34(1):59-77. LU Xiancai,HU Wenxuan,FU Qi,et al.Study of combination pattern of soluble organic matters and clay minerals in the immature source rocks in Dongying Deperssion,China[J].Scientia Geologica Sinica,1999,34(1):69-77.
[18]	宋一涛,廖永胜,张守春.半咸-咸水湖相烃源岩中两种赋存状态可溶有机质的测定及其意义[J].科学通报,2005,50(14):1531-1534. SONG Yitao,LIAO Yongsheng,ZHANG Shouchun.Quantification and implications of two types of soluble organic matter from brackish to saline lake source rocks[J].Chinese Science Bulletin,2005,50(14):1490-1494.
[19]	KUILA U,MCCARTY D K,DERKOWSKI A,et al.Nano-scale texture and porosity of organic matter and clay minerals in organic-rich mudrocks[J].Fuel,2014,135:359-373.
[20]	张梦妍,包承宇,陈静文,等.化学氧化剂(H₂O₂、NaOCl)作用下高岭土-胡敏酸复合体中有机碳的稳定性[J].环境化学,2014,33(7):1149-1154. ZHANG Mengyan,BAO Chengyu,CHEN Jingwen,et al.The stabilization of organic carbon in humic acid-kaolin complex by chemical oxidants[J].Environmental Chemistry,2014,33(7):1149-1154.
[21]	LIAO Zewei,GRACIAA A,GENG Ansong,et al.A new low-interference characterization method for hydrocarbons occluded inside asphaltene structures[J].Applied Geochemistry,2006,21(5):833-838.
[22]	关平,徐永昌,刘文汇.烃源岩有机质的不同赋存状态及定量估算[J].科学通报,1998,43(14):1556-1559. GUAN Ping,XU Yongchang,LIU Wenhui.Different occurrence and estimation of the organic matter in source rock[J].Chinese Science Bulletin,1998,43(14):1556-1559.
[23]	MAYER M L.Relationships between mineral surfaces and organic carbon concentrations in soils and sediments[J].Chemical Geo-logy,1994,114(3/4):347-363.
[24]	MAYER L M,SCHICK L L,HARDY K R,et al.Organic matter in small mesopores in sediments and soils[J].Geochimica et Cosmochimica Acta,2004,68(19):3863-3872.
[25]	ZHU H Y,DING Z,LU C Q,et al.Molecular engineered porous clays using surfactants[J].Applied Clay Science,2002,20(4/5):165-175.
[26]	KUILA U,PRASAD M.Specific surface area and pore-size distribution in clays and shales[J].Geophysical Prospecting,2013,61(2):341-362.
[27]	XIONG Fengyang,JIANG Zhenxue,CHEN Jianfa,et al.The role of the residual bitumen in the gas storage capacity of mature lacustrine shale:a case study of the Triassic Yanchang shale,Ordos Basin,China[J].Marine and Petroleum Geology,2016,69:205-215.
[28]	WAGAI R,MAYER L M,KITAYAMA K.Extent and nature of organic coverage of soil mineral surfaces assessed by a gas sorption approach[J].Geoderma,2009,149(1/2):152-160.