贾凡建,王建伟,郭瑞超,赵乐强,张卓,吴智平,李艳丽
JIA Fanjian,WANG Jianwei,GUO Ruichao,ZHAO Leqiang,ZHANG Zhuo,WU Zhiping,LI Yanli

• 1:中国石油大学(华东)地球科学与技术学院
• 2:中国石化胜利油田分公司
• 3:山东地质调查院

摘要(Abstract)：

为了明确准噶尔盆地西北缘哈山地区二叠系风城组页岩的岩相发育特征及页岩油含油性，利用露头、钻井、地震、地化分析等资料，对风城组页岩层段的岩性、展布、沉积环境等地质特征进行研究，并分析其源岩品质、储层特征和含气性。结果表明：风城组页岩有机质丰度较高，w (TOC)为0.12%～5.13%，平均为1.16%，是一套以Ⅰ、Ⅱ_1型为主的未熟-低熟源岩；残留烃含量较低，主要为吸附油，其体积分数平均高达72.57%；孔径以中孔为主，体积分数为40.68%～83.98%，平均为66.25%，微小孔体积分数次之；凤城组页岩主要发育白云质凝灰岩、灰质凝灰岩、凝灰质泥页岩、白云质泥页岩、灰质泥页岩和白云质粉砂岩6种岩相，其中灰质泥页岩为优势岩相，储集空间最发育，主要为石英粒间孔和碳酸盐粒间孔，微小孔的体积分数较高，平均面孔率最高，可达9.97%；灰质泥页岩的含油量最高，w (TOC)大于2%，游离油含量大于1 mg/g。研究成果可为哈山及其他地区页岩含油性评价提供借鉴。
In order to clarify lithofacies development characteristics and oil-bearing property of Permian Fengcheng Formation shale in Hashan area on northwest margin of Junggar Basin,geological characteristics of lithology,distribution and sedimentary environment of shale intervals in Fengcheng Formation are studied via outcrop,drilling,seismic and geochemical data analysis,and source rock quality,reservoir characteristics and gas-bearing property are analyzed.The results show that Fengcheng Formation shale is characterized by relatively high organic matter abundance with w(TOC) of 0.12%～5.13%,averaging 1.16%,being a set of immature-low mature source rock mainly composed of type Ⅰ and Ⅱ_1 kerogen.Its residual hydrocarbon content is low and mainly as absorbed oil with high volume fraction averagely 72.57%.Pore size is mainly mesopores with volume fraction of 40.68%～83.98%,averaging 66.25%,and secondly micropores.6 lithofacies mainly develop in Fengcheng Formation shale,including dolomitic tuff,calcareous tuff,tuffaceous mud shale,dolomitic mud shale,calcareous mud shale and dolomitic siltstone,among which calcareous mud shale is dominant lithofacies with the most developed reservoir space and mainly composed of intergranular pores of quartz and intergranular pores of carbonate,with relatively high volume fraction of micropores and the highest average plane porosity of 9.97%.Calcareous mud shale has the highest shale oil content with w(TOC) of >2% and free oil content of >1 mg/g.The research provides reference for evaluation of shale oil-bearing property of Hashan and other areas.

关键词(KeyWords)： 准噶尔盆地;哈山地区;二叠系;风城组;页岩油;岩相特征;含油性
Junggar Basin;Hashan area;Permian;Fengcheng Formation;shale oil;lithofacies characteristics;oil-bearing property

Abstract:

Keywords:

基金项目(Foundation): 中国石油化工股份有限公司项目“准噶尔盆地腹部超深层P-T成储成藏机制及勘探方向”（P22128）;中国石油化工股份有限公司胜利油田分公司项目“准噶尔盆地侏罗系八道湾组烃源岩热演化及潜力评价”（YJQ2301）

作者(Author): 贾凡建,王建伟,郭瑞超,赵乐强,张卓,吴智平,李艳丽
JIA Fanjian,WANG Jianwei,GUO Ruichao,ZHAO Leqiang,ZHANG Zhuo,WU Zhiping,LI Yanli

DOI: 10.19597/J.ISSN.1000-3754.202308062

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