碳酸盐岩储层多尺度缝洞体分类表征——以塔河油田S80单元奥陶系油藏为例

doi:10.11743/ogg20170418

摘要/Abstract

摘要： 碳酸盐岩缝洞型油藏受古地貌、构造及岩溶作用控制，储集体类型多样，主要以不同类型的大尺度溶洞、小尺度孔洞及多尺度裂缝为主，储集体成因机制不同，高度离散，传统连续性储层表征思路难以直接套用。以储集体识别和描述为基础，基于分类表征的思想对不同类型储集体分别进行刻画。以岩溶成因及野外露头为指导，综合地震定性预测与定量反演成果，对于风化壳成因、断控成因的大尺度溶洞分别采用序贯指示方法和基于目标的方法进行模拟。对于小尺度孔洞采用协同序贯指示模拟方法建模，对于多尺度裂缝则以地震信息为基础，采用人工解释、蚂蚁追踪与随机模拟相结合的方法进行表征。在分类表征基础上，根据岩溶成因规律构建分类储集体的融合原则，实现了分类模型的整合。结果表明：该方法能够有效表征S80单元缝洞型油藏的强非均质性特征，基于模型细化评价单元储量级别，设计新钻井位置，筛选有利目标区均取得较好效果，模型应用于油藏数值模拟，为指导剩余油挖潜与开发方案调整奠定地质基础。

关键词: 离散建模, 缝洞体, 碳酸盐岩储层, 奥陶系, 塔河油田, 塔里木盆地

Abstract: Formation of carbonate fractured-vuggy reservoirs is controlled by palaeogeomorphology,tectonic movement and karstification.The main storage spaces are large-scale caves,small-scale dissolved pores and multi-scale fractures with different geometry.Because of complicated genetic mechanisms and highly discrete,traditional continuum reservoir characterization methods are difficult to apply directly.Based on the recognition and description of fractured-vuggy reservoir,we use the classification characterization method to characterize various reservoirs.Guided by karst genetic mechanisms and outcrops studies,in combination with seismic qualitative forecast and quantitative inversion results,we simulate wea-thering karst caves and faults-controlled caves using sequential indicator and the object-based method respectively.We use the method of collaborative sequential indicator simulation to establish the distribution model of the small scale dissolution pore.Based on the seismic information,we establish the multi-scale discrete fracturing network using the artificial interpretation,ant tracking and random simulation methods.Based on karst genetic mechanisms,we construct fusion principle for different types of reservoirs,and thus effectively integrated different types of reservoirs.The results show that the idea of the classification and characterization method can effectively describe the strong heterogeneity of S80 unit.Based on the model,we can refine the reserve classification in different the reservoir pay sections,evaluate the new well design,identify the target area,and apply it to the numerical simulation of reservoirs.The method lays the geological foundation to guide discovery of remaining oil potential,and modification of development plan.

Key words: discrete modeling, fractured-vuggy reservoir body, carbonate reservoir, Ordovician, Tahe oilfield, Tarim Basin

中图分类号:

TE122.2

吕心瑞,李红凯,魏荷花,等. 碳酸盐岩储层多尺度缝洞体分类表征——以塔河油田S80单元奥陶系油藏为例[J]. 石油与天然气地质, 2017, 38(4): 813-821. doi: 10.11743/ogg20170418 Lyu Xinrui,Li Hongkai,Wei Hehua,et al. Classification and characterization method for multi-scale fractured-vuggy reservoir zones in carbonate reservoirs:An example from Ordovician reservoirs in Tahe oilfield S80 unit[J]. Oil & Gas Geology, 2017, 38(4): 813-821. doi: 10.11743/ogg20170418

参考文献

[1] 韩长城,林承焰,鲁新便,等.塔河油田奥陶系碳酸盐岩岩溶斜坡断控岩溶储层特征及形成机制[J].石油与天然气地质,2016,37(5):644-652. Han Changcheng,Lin Chengyan,Lu Xinbian,et al.Characterization and genesis of fault-controlled karst reservoirs in Ordovician carbonate karst slope of Tahe oilfield,Tarim Basin[J].Oil & Gas Geology,2016,37(5):644-652.
[2] 曹建文,金意志,夏日元,等.塔河油田4区奥陶系风化壳古岩溶作用标志及控制因素分析[J].中国岩溶,2012,31(2):220-226. Cao Jianwen,Jin Yizhi,Xia Riyuan,et al.Marks and controlling factors of the paleo-karstification in the Ordovician weathered crust at the 4th block of Tahe Oilfield[J].Carsologica Sinica,2012,31(2):220-226.
[3] 窦之林.塔河油田碳酸盐岩缝洞型油藏开发技术[M].北京:石油工业出版社,2012:6-12. Dou Zhilin.Development technology of carbonate fractured-vuggy reservoir in Tahe Oilfield[M].Beijing:Petroleum Industry Press,2012:6-12.
[4] 鲁新便,蔡忠贤.缝洞型碳酸盐岩油藏古溶洞系统与油气开发——以塔河碳酸盐岩溶洞型油藏为例[J].石油与天然气地质,2010,31(1):22-27. Lu Xinbian,Cai Zhongxian.A study of the paleo-cavern system in fractured-vuggy carbonate reservoirs and oil/gas development-taking the reservoirs in Tahe oilfield as an example[J].Oil & Gas Geology,2010,31(1):22-27.
[5] 刘群,王世星,顾汉明,等.碳酸盐岩缝洞体体积定量计算及其影响因素分析探索——以塔河油田主体区为例[J].石油物探,2013,52(2):217-222. Liu Qun,Wang Shixing,Gu Hanming,et al.Carbonate fracture-cave volume quantitative calculation and its influencing factors analysis:case study of the main area in Tahe Oilfield[J].Geophysical Prospecting for Petroleum,2013,52(2):217-222.
[6] 李阳,范智慧.塔河奥陶系碳酸盐岩油藏缝洞系统发育模式与分布规律[J].石油学报,2011,32(1):101-105. Li Yang,Fan Zhihui.Developmental pattern and distribution rule of fracture-cavity system of Ordovician carbonate reservoirs in Tahe Oilfield[J].Acta Petrolei Sinica,2011,32(1):101-105.
[7] 金强,田飞,张宏方.塔河油田岩溶型碳酸盐岩缝洞单元综合评价[J].石油实验地质,2015,37(3):272-278. Jin Qiang,Tian Fei,Zhang Hongfang.Comprehensive evaluation of fracture-cave units in karst carbonates in Tahe Oilfield,Tarim Basin[J].Petroleum Geology & Experiment,2015,37(3):272-278.
[8] 鲁新便,胡文革,汪彦,等.塔河地区碳酸盐岩断溶体油藏特征与开发实践[J].石油与天然气地质,2015,36(3):347-355. Lu Xinbian,Hu Wenge,Wang Yan,et al.Characteristics and development practice of fault-karst carbonate reservoirs in Tahe area,Tarim Basin[J].Oil & Gas Geology,2015,36(3):347-355.
[9] 董瑞霞,韩剑发,张艳萍,等.塔中北坡鹰山组碳酸盐岩缝洞体量化描述技术及应用[J].新疆石油地质,2011,32(3):314-317. Dong Ruixia,Han Jianfa,Zhang Yanping,et al.Application of fracture-cave quantitative technique for carbonate reservoir of Yingshan Formation of Lower Ordovician in north slope of Tazhong Area,Tarim Basin[J].Xin Jiang Petroleum Geology,2011,32(3):314-317.
[10] 李阳.塔河油田奥陶系碳酸盐岩溶洞型储集体识别及定量表征[J].中国石油大学学报(自然科学版),2012,36(1):1-7. LI Yang.Ordovician carbonate fracture-cavity reservoirs identification and quantitative characterization in Tahe Oilfield[J].Journal of China University of Petroleum,2012,36(1):1-7.
[11] 张淑品,陈福利,金勇.塔河油田奥陶系缝洞型碳酸盐岩储集层三维地质建模[J].石油勘探与开发,2007,34(2):175-180. Zhang Shupin,Chen Fuli,Jin Yong.3D modeling of Ordovician fracture-vug carbonate reservoir,Tahe Oilfield[J].Petroleum Exploration and Development,2007,34(2):175-180.
[12] 刘学利,汪彦.塔河缝洞型油藏溶洞相多点统计学建模方法[J].西南石油大学学报(自然科学版),2012,34(6):53-58. Liu Xueli,Wang Yan.Multi-point geostatistical approach to model karst facies of fracture-cavity reservoir in Tahe Oilfield[J].Journal of Southwest Petroleum University:Science & Technology Edition,2012,34(6):53-58.
[13] 刘钰铭,侯加根,胡向阳,等.塔河油田古岩溶储集体三维建模[J].中国石油大学学报(自然科学版),2012,36(2):34-38. Liu Yuming,Hou Jiagen,Hu Xiangyang,et al.3D modeling of paleokarst reservoir in Tahe Oilfield[J].Journal of China University of Petroleum,2012,36(2):34-38.
[14] 鲁新便,赵敏,胡向阳,等.碳酸盐岩缝洞型油藏三维建模方法技术研究——以塔河奥陶系缝洞型油藏为例[J].石油实验地质,2012,34(2):193-198. Lu Xinbian,Zhao Min,Hu Xiangyang,et al.Studies of 3D reservoir modeling:taking Ordovician carbonate fractured-vuggy reservoirs in Tahe Oilfield as an example[J].Petroleum Geology & Experiment,2012,34(2):193-198.
[15] 侯加根,马晓强,刘钰铭等.缝洞型碳酸盐岩储层多类多尺度建模方法研究:以塔河油田四区奥陶系油藏为例[J].地学前缘,2012,19(2):59-66. Hou Jiagen,Ma Xiaoqiang,Liu Yuming,et al.Modeling of carbonate fracture-vuggy reservoir:A case study of Ordovician reservoir of 4th block in Tahe Oilfield.Earth Science Frontiers,2012,19(2):59-66.
[16] 胡向阳,李阳,权莲顺,等.碳酸盐岩缝洞型油藏三维地质建模方法——以塔河油田四区奥陶系油藏为例[J].石油与天然气地质,2013,34(3):383-387. Hu Xiangyang,Li Yang,Quan Lianshun,et al.Three-dimensional geological modeling of fractured-vuggy carbonate reservoirs:a case from the Ordovician reservoirs in Tahe-Ⅳblock,Tahe oilfield[J].Oil & Gas Geology,2013,34(3):383-387.
[17] 巫波,刘遥,荣元帅,等.蚂蚁追踪技术在缝洞型油藏裂缝预测中的应用[J].断块油气田,2014,21(4):453-457. Wu Bo,Liu Yao,Rong Yuanshuai,et al.Application of ant tracking technology in fracture prediction of fracture-vuggy reservoirVJ].Fault-Block Oil & Gas Field,2014,21(4):453-457.
[18] 李莹,王怀洪,巩固,等.塔河油田S80单元缝洞体分布规律及发育模式[J].油气地质与采收率,2014,21(6):30-32. Li Ying,Wang Huaihong,Gong Gu,et al.The fractured-vuggy structural model of S80 unit,Tahe oilfield.Petroleum Geology and Recovery Efficiency,2014,21(6):30-32.
[19] 张军林,田世澄,郑多明.塔北隆起西部缝洞型碳酸盐岩储层表征与评价[J].物探与化探,2014,38(3):497-503. Zhang Junlin,Tian Shicheng,Zheng Duoming.Characterization and evaluation of fracture cavity type carbonate reservoir in the western part of Northern Tarim uplift[J].Geopbysical and Geochemical Exploration,2014,38(3):497-503.
[20] 金强,田飞.塔河油田岩溶型碳酸盐岩缝洞结构研究[J].中国石油大学学报(自然科学版),2013,37(5):15-21. Jin Qiang,Tianfei.Investigation of fracture-cave constructions of karsted cabonate reservoirs of Ordovician in Tahe Oilfield,Tarim Basin[J].Journal of China University of Petroleum,2013,37(5):15-21.
[21] 荣元帅,胡文革,蒲万芬,等.塔河油田碳酸盐岩油藏缝洞分割性研究[J].石油实验地质,2015,37(5):599-605. Rong Yuanshuai,Hu Wenge,Pu Wanfen,et al.Separation of fractures and cavities in carbonate reservoirs in the Tahe Oil Field[J].Petroleum Geology & Experiment,2015,37(5):599-605.
[22] 夏日元,邹胜章,梁彬,等.塔里木盆地奥陶系碳酸盐岩缝洞系统模式及成因研究[M].北京:地质出版社,2011:119-138. Xia Riyuan,Zou Shengzhang,Liang Bin,et al.Study on the patterns and forming mechanism of fracture-cavity systems in Ordovician carbonate,Tarim Basin[M].Beijing:Geological Publishing House,2011:119-138.
[23] 李新华,鲍典,张娟.塔河油田碳酸盐岩油藏致密段划分及意义[J].新疆地质,2013,31(1):47-51. Li Xinhua,Bao Dian,Zhang Juan.Division and significance of dense limestone layers in Tahe Ordovician carbonate reservoir Oilfield[J].XinJiang Geology,2031,31(1):47-51.