准噶尔盆地阜东斜坡区头屯河组二段储集层质量评价及差异性分析  

Quality evaluation and differences analysis on reservoirs in second member of Toutunhe Formation in Fudong slope area, Junggar Basin

作　　者：于景维 高立新 卢炳雄 张金龙[4] 祁利祺 高尚 李轶 Yu Jingwei;Gao Lixin;Lu Bingxiong;Zhang Jinlong;Qi Liqi;Gao Shang;Li Yi(Petroleum Institute of China University of Petroleum-Beijing at Karamay,Karamay,Xinjiang 834000;Xinjiang Oilfield Exploration Division,Karamay,Xinjiang 834000;School of Geography Science and Planning,Nanning Normal University,Nanning 530001;Research Institute of Petroleum Exploration and Development of Xinjiang Oilfield Company,Karamay,Xinjiang 834000)

机构地区：[1]中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000 [2]新疆油田勘探事业部,新疆克拉玛依834000 [3]南宁师范大学地理科学与规划学院,南宁530001 [4]新疆油田公司勘探开发研究院,新疆克拉玛依834000

出　　处：《地质科学》2022年第3期687-703,共17页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：广西自然科学基金项目(编号:2018JJB150094);广西科技计划—科技基地和人才专项(编号:2018AD19040);国家重大专项(编号:2011ZX05001-005-01);新疆维吾尔自治区科技厅面上项目(编号:2021D01A201)资助。

摘　　要：准噶尔盆地阜东斜坡区头屯河组二段为重要产油层,客观合理的储集层评价是提高目的层勘探开发效果的基础。在前人研究以及储集层描述的基础上,筛选出储集层品质参数、岩屑相对体积分数、砂地比等13个储集层质量的评价指标,利用灰色关联理论对头二段所对应的中期旋回MSC2上升和下降半旋回内储集层进行定量精细分类评价,并对储集层差异性进行分析。结果表明:上升和下降半旋回内储集砂体以水下分流河道砂体为主,储集层内碎屑组分、颗粒结构、孔隙结构以及物性方面存在一定的差异;利用灰色关联理论对各个评价指标的关联性以及权重系数进行定量计算,得到储集层质量的综合权衡评价分数,实现储集层质量评价的定量化;利用综合评价分数的差异将储集层质量划分为4类,发现Ⅰ类储集层质量和Ⅱ类储集层质量较好,同油田实际勘探开发方向一致;上升和下降半旋回内储集层质量的控制因素不同,导致储集层质量存在一定差异性。综合评价认为,定量的评价结果为研究区头二段有效合理的勘探开发指明方向,同时为相似背景下储集层评价提供指导。The second member in Toutunhe Formation is the main oil production layer in Fudong slope area, Junggar Basin. Objective and reasonable evaluation is the basement for increasing exploration and development effect on target layer. Based on previous research and reservoir description, 13 indicators of evaluation such as RQI, volume fraction of debris and so on were chosen to make quantitative evaluation on quality of reservoirs in uprising and falling periods of MSC2, which is corresponding with the second member in Toutunhe Formation, and make differences analysis on reservoirs by grey correlation. The results showed that reservoir sands in uprising and falling periods of MSC2 were mainly underwater distributary channel sand, and there were many differences on detrital composition, particle structures, pore structures and physical properties. According to the grey relational theory, the correlation and weigh coefficient of each factor can be quantitatively calculated, and the reservoir quality comprehensive evaluation index can be obtained to realize quantitative evaluation on reservoir quality. There were four types of reservoir quality by comprehensive evaluation index, and Ⅰand Ⅱ reservoir had high quality which was consistent with well-production in oilfield. The differences on quality of reservoirs in uprising and falling periods of MSC2 were controlled by different influencing factors. It is considered that quantitative evaluation results show clearly direction for effective and reasonable exploration and development in second member of Toutunhe Formation in study area, and provide guidance for reservoir evaluation with similar background.

关 键 词：准噶尔盆地 阜东斜坡区 头屯河组二段 储集层质量评价 控制因素 

分 类 号：TE122[石油与天然气工程—油气勘探]