Study on Oil-Water Saturation Correction from Sealed Core Wells
-
摘要: 密闭取心井的油水饱和度分析资料是评价储层含油性的重要数据, 而室内岩心分析测量的油水饱和度常常偏离原始地层条件下的真实情况, 需要校正后才能使用.以克拉玛依油田一中区克下组油藏为例, 首先基于油水饱和度的理论模型, 依据油水剩余率的概念分析了原始地层条件下油水饱和度与实验室测量的油水饱和度之间的联系, 进而确定了岩心分析的油水饱和度与油水剩余率的线性关系, 基于该线性关系的斜率和截距, 利用数理统计和数学处理的方法建立了油水饱和度损失总量中油、水各自的损失百分比, 最终依据损失百分比可以有效地对饱和度资料进行校正.此方法在克下组油藏的实际应用中取得了很好的效果, 校正后的饱和度资料使岩心含油性与储层电性之间的相关性得到了很大的提高, 校正数据可以更好地反映原始地层的含油情况, 为饱和度公式的确定以及剩余油的评价提供准确的基础数据.Abstract: The analysis of oil-water saturation from sealed core wells is important data for evaluation of oil-bearing property of reservoirs. However, the oil-water saturation values from core measuring in laboratory usually deviate from true situation of original formation condition, so these data must be corrected before using. In this paper, the Kexia Group reservoir of First-Middle block in Karamay oilfield is selected as the study object. Firstly, based on the theoretical mode of oil-water saturation the relationship between oil-water saturation under original formation condition and oil-water saturation of sealed core analysis are studied according to the concept of oil-water remaining rate, and then the linear relationship of oil-water saturation values of sealed core analysis and oil-water remaining rate are determined. Based on the slope and intercept of above linear relationship the oil and water loss percentage in total loss of oil-water saturation are respectively established by use of mathematical statistics and mathematical processing methods. Finally, the saturation data can be effectively corrected by oil and water loss percentage. The above-mentioned method is applied to oil-water saturation correction in Kexia Group reservoir and achieves good application results. The using of corrected saturation data greatly improves correlation between core oil-bearing and reservoir electricity and corrected data can better reflect the oil-bearing situation of original formation, then provides accurate basic data for the saturation formula determination and remaining oil evaluation.
-
Key words:
- sealed core well /
- saturation correction /
- remaining rate /
- linear relationship /
- mathematical processing /
- geophysics
-
图 1 一中区A井(a)和B井(b)油水饱和度交会
Fig. 1. Crossplot of oil-water saturation from well A (a) and well B (b) in the First-Middle block
图 2 实测油水饱和度与理论值对比
Fig. 2. Comparison of actual measuring oil-water saturation and theoretical values
图 3 物理模拟实验的饱和度校正流程
Fig. 3. Schematic of experimental equipment of saturation correction
图 4 T10193井岩心分析油水饱和度交会图
Fig. 4. Crossplot of oil and water saturation from core analysis in well T101093
图 5 T10193井饱和度校正结果与测井曲线对比
Fig. 5. Comparison of saturation correction results and well logs in well T10193
表 1 T10193井油水饱和度校正数据
Table 1. Data of oil-water saturation correction in well T10193
岩心序号 校正前的油饱和度S'o(%) 校正前的水饱和度S'w(%) 校正前油水饱和度和(%) 数理统计方法 物理模拟实验方法 校正后的油饱和度So(%) 校正后的水饱和度Sw(%) 校正后的油饱和度So(%) 校正后的水饱和度Sw(%) 1 54.8 33.9 88.7 63.58 36.42 59.27 40.73 2 51.5 38.6 90.1 59.19 40.81 54.54 45.46 3 47.5 34 81.5 61.87 38.13 59.17 40.83 4 30.2 65.6 95.8 33.46 66.54 27.38 72.62 5 51.6 36.9 88.5 60.54 39.46 56.25 43.75 6 49.8 39.1 88.9 58.42 41.58 54.04 45.96 7 44.5 42.9 87.4 54.29 45.71 50.22 49.78 8 58.5 27.2 85.7 69.61 30.39 66.01 33.99 9 44.7 42.4 87.1 54.72 45.28 50.72 49.28 10 43.2 45.8 89.0 51.75 48.25 47.30 52.70 11 50.7 38.5 89.2 59.09 40.91 54.64 45.36 12 54.6 25.5 80.1 70.06 29.94 67.72 32.28 13 34.7 49.4 84.1 47.05 52.95 43.68 56.32 14 51.9 35.4 87.3 61.77 38.23 57.76 42.24 15 50.4 39.5 89.9 58.25 41.75 53.64 46.36 
下载: 导出CSV
-
Guo, Q., Pu, R.H., 2011. Neopaleozoic Tectonic Evolution and Hydrocarbon Analysis in Bamai-Tazhong Area, Tarim Basin. Oil Geophysical Prospecting, 46(2): 317-325(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYDQ201102028.htm Han, H., 2010. Study on Saturation Correction for Sealed Coring Well in the Ⅳ5-11 Series of Strata in the Shuanghe Oilfield. Special Oil and Gas Reservoirs, 17(5): 87-89(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-TZCZ201005026.htm Jiang, X., Xu, C.G., Zou, H.Y., et al., 2011. Similarity and Difference of Hydrocarbon Accumulation History in Liaoxi Low Uplift and Liaozhong Sag. Earth Science—Journal of China University of Geosciences, 36(3): 555-564(in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical/dqkx201103013 Li, S.M., Song, X.M., Jiang, Y.W., et al., 2011. Architecture and Remaining Oil Distribution of the Sandy Braided River Reservoir in the Gaoshangpu Oilfield. Petroleum Exploration and Development, 38(4): 474-482(in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical/syktykf201104012 Liu, B., Huang, Z.L., Wang, M.M., et al., 2011. Restoration of Hydrocarbon Accumulation History in Shengbei Structure Belt, Tuha Basin. Journal of Jilin University (Earth Science Edition), 41(4): 1006-1012(in Chinese with English abstract). http://www.researchgate.net/publication/292872409_Restoration_of_hydrocarbon_accumulation_history_in_Shengbei_structure_belt_Tuha_basin/download Liu, L., 2009. Oil and Water Saturation Correction for Sealed Coring Wells Based on Physical Simulation Experiments. Oil Drilling & Production Technology, 31(2): 82-85(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYZC200902024.htm Lu, D.W., Wang, C.L., 2003. Logging New Technology of Remaining Oil Saturation Evaluation. Petroleum Industry Press, Beijing(in Chinese). Tan, F.Q., Li, H.Q., Meng, Z.X., et al., 2010. Studies on Application of Data Mining Method in Oil Exploration and Development. Oil Geophysical Prospecting, 45(1): 85-91(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYDQ201001015.htm Tan, F.Q., Li, H.Q., Xu, C.F., et al., 2010. Quantitative Evaluation Methods for Water-Flooded Layers of Conglomerate Reservoir Based on Well Logging Data. Petroleum Science, 7(4): 485-493. doi: 10.1007/s12182-010-0092-y Tian, Z.Y., Mu, L.X., Sun, D.M., et al., 2002. Logging Attributes and Mechanism Study of Grit Water-flooding Reservoir. Acta Petrolei Sinica, 23(6): 50-55(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYXB200206013.htm Wang, Y.J., Huang, H., Liu, Z.Y., et al., 2000. Mathematically Statistical Calibration for Saturation Analysis by Coring and Its Application. Journal of Jianghan Petroleum Institute, 22(4): 42-44(in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical/jhsyxyxb200004013 Wang, Y.Z., Xu, Y., Wang, Y.Q., 1998. A Method for Correcting the Oil Saturation of Very Low Permeability Oil Reservoirs. Petroleum Exploration and Development, 25(2): 71-73(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SKYK802.020.htm Xing, Y.J., Wang, Y.J., Bai, Y.J., et al., 2008. Sedimentary Characteristics of Water Flooded Layers and Remaining Oil Distribution in Fuyu Oil Field. Journal of Jilin University (Earth Science Edition), 38(Suppl.): 128-132(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-CCDZ2008S1035.htm Yang, S.L., Hu, X.J., Li, H., 2004. Influencing Factors and Correction Method for Error of Fluid Saturation Calculation during Sealed Coring. Journal of the University of Petroleum, China, 28(6): 64-67(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYDX200406016.htm Yu, B.L., Liu, W.H., Liu, X.L., et al., 2008. Controlling Factor and Concentration Rule of Neogene Reservoir Genesis in Chepaizi Area of Jungar Basin. Oil Geophysical Prospecting, 43(Suppl.): 45-53(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYDQ2008S1011.htm Zhang, L., 2009. Physical Simulation Experiment on the Saturation Correction for Sealed Coring Wells. Petroleum Geology and Recovery Efficiency, 16(2): 94-95(in Chinese with English abstract). http://www.zhangqiaokeyan.com/academic-journal-cn_petroleum-geology-recovery-efficiency_thesis/0201218740672.html Zhang, L., Lu, S.F., Zhang, X.J., et al., 2010. Controlling Factors and Accumulation Model of Hydrocarbon Accumulation of the Fuyang Oil Units in Sanzhao Region of the Songliao Basin. Journal of Jilin University (Earth Science Edition), 40(3): 490-500(in Chinese with English abstract). http://www.zhangqiaokeyan.com/academic-journal-cn_journal-jilin-university-earth-science-edition_thesis/0201247972118.html 郭倩, 蒲仁海. 2011. 塔里木盆地巴麦－塔中地区晚古生代古构造演化及油气成藏分析. 石油地球物理勘探, 46(2): 317-325. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDQ201102028.htm 韩怀. 2010. 双河油田Ⅳ5-11层系密闭取心井饱和度校正方法研究. 特种油气藏, 17(5): 87-89. doi: 10.3969/j.issn.1006-6535.2010.05.024 姜雪, 徐长贵, 邹华耀, 等, 2011. 辽西低凸起与辽中凹陷油气成藏期次的异同. 地球科学—中国地质大学学报, 36(3): 555-564. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201103012.htm 李顺明, 宋新民, 蒋有伟, 等, 2011. 高尚堡油田砂质辫状河储集层构型与剩余油分布. 石油勘探与开发, 38(4): 474-482. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK201104013.htm 柳波, 黄志龙, 王玫玫, 等, 2011. 吐哈盆地胜北构造带油气成藏过程. 吉林大学学报(地球科学版), 41(4): 1006-1012. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ201104008.htm 刘丽, 2009. 基于物理模拟实验的密闭取心井油水饱和度校正. 石油钻采工艺, 31(2): 82-85. doi: 10.3969/j.issn.1000-7393.2009.02.021 陆大卫, 王春利, 2003. 剩余油饱和度测井评价新技术. 北京: 石油工业出版社. 谭锋奇, 李洪奇, 孟照旭, 等, 2010. 数据挖掘方法在石油勘探开发中的应用研究. 石油地球物理勘探, 45(1): 85-91. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDQ201001015.htm 田中元, 穆龙新, 孙德明, 等, 2002. 砂砾岩水淹层测井特点及机理研究. 石油学报, 23(6): 50-55. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB200206013.htm 王艺景, 黄华, 刘志远, 等, 2000. 取心分析饱和度数理统计校正方法及其应用. 江汉石油学院学报, 22(4): 42-44. doi: 10.3969/j.issn.1000-9752.2000.04.013 王永卓, 徐媛, 王元庆, 1998. 特低渗透油层含油饱和度的一种校正方法. 石油勘探与开发, 25(2): 71-73. doi: 10.3321/j.issn:1000-0747.1998.02.021 邢艳娟, 王燕津, 白永江, 等, 2008. 扶余油田水淹层沉积特征与剩余油分布. 吉林大学学报(地球科学版), 38(增刊): 128-132. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ2008S1035.htm 杨胜来, 胡学军, 李辉, 2004. 密闭取心流体饱和度误差的影响因素及修正方法. 石油大学学报(自然科学版), 28(6): 64-67. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDX200406016.htm 于宝利, 刘万辉, 刘新利, 等, 2008. 准噶尔盆地车排子地区新近系油气成藏控制因素及富集规律. 石油地球物理勘探, 43(增刊): 45-53. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDQ2008S1011.htm 张亮, 2009. 密闭取心井岩心饱和度校正物理模拟实验. 油气地质与采收率, 16(2): 94-95. doi: 10.3969/j.issn.1009-9603.2009.02.029 张雷, 卢双舫, 张学娟, 等, 2010. 松辽盆地二肇地区扶杨油层油气成藏过程主控因素及成藏模式. 吉林大学学报(地球科学版), 40(3): 490-500. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ201003002.htm -
点击查看大图
图(5) / 表(1)
计量
- 文章访问数: 3156
- HTML全文浏览量: 1130
- PDF下载量: 584
- 被引次数: 0
