不同开发时期砂岩油藏储层非均质三维模型特征

doi:10.11743/ogg20060510

摘要/Abstract

摘要：

以济阳坳陷东营凹陷胜坨油田二区为例,简述非均质综合指数的计算、作用和意义。按储层随机建模的思路和方法建立非均质综合指数三维模型,主要包括储层数据准备、构造模型、非均质综合指数分析、非均质建模和显示5个环节,直观表征储层的空间非均质性特征。分析了东营组三段开发初期、中期和后期的非均质综合指数变差函数和三维模型特征,得出了不同开发时期储层非均质性的变化规律。结果表明,随注水开发的进行,变程(a)减小,基台值(c₀+ c)增大,块金效应值(c₀)为0。开发初期储层以中等非均质性为主,中期以较强-中等为主,后期以较强为主。纵向上,上部的非均质综合指数差异较大,下部的差异相对较小。纵向上的层间和层内非均质性要强于平面非均质性。注水开发加剧了储层的非均质程度。

关键词: 非均质综合指数, 储层非均质性, 三维模型, 开发时期, 胜坨油田, 东营凹陷

Abstract:

The calculation of heterogeneous aggregative index,together with its function and significance,is briefed based on the data acquired from the Block Ⅱof Shengtuo oilfield.The 3-D modeling of heterogeneous aggregative index by employing the reservoir stochastic method includes the following five stages:preparation of reservoir data,construction of model,analysis of heterogeneous aggregative index,construction of heterogeneous model,and display of modeling results.The spatial heterogeneity of reservoir is vividly characterized by the model.An analyze of the variation function and 3-D model characteristics of heterogeneous aggregative index of sandstone in the Third Member of Dongying Formation in its earlier,middle,and later stages of development reveals the changing pattern of reservoir heterogeneity at different development phases.According to the results, the range of influence(a)decreases with waterflooding,while the sill value(c_o+c)increases and nugget value(c_o)remains zero.The initial,middle and late development stages are characterized by moderate,moderate to relatively strong,and strong reservoir heterogeneities,respectively.Vertically,the heterogeneous aggregative index varies greatly in the upper part of the reservoir and is more constant in the lower part.Vertical interformational and intra-formational heterogeneities are stronger than lateral heterogeneity.Water injection intensifies the heterogeneity of reservoirs.

Key words: heterogeneous aggregative index, reservoir heterogeneity, 3-D model, development stage, Shengtuo oilfield, Dongying sag

中图分类号:

TE112.2

杨少春,王瑞丽. 不同开发时期砂岩油藏储层非均质三维模型特征[J]. 石油与天然气地质, 2006, 27(5): 652-659. doi: 10.11743/ogg20060510 Yang Shaochun,Wang Ruili. Characteristics of heterogeneous 3-D model of sandstone reservoirs in different development stages[J]. Oil & Gas Geology, 2006, 27(5): 652-659. doi: 10.11743/ogg20060510

参考文献

[1] 焦养泉,李思田,李祯,等.碎屑岩储层物性非均质性的层次结构[J].石油与天然气地质,1998,19(2):89～92 Jiao Yangquan,Li Sitian,Li Zhen,et al.Heterogeneity of porosity and permeability in clastic rock reservoirs[J].Oil & Gas Geology,1998,19(2):89-92
[2] 尹志军,鲁国永,邹翔,等.陆相储层非均质性及其对油藏采收率的影响--以冀东高尚堡和胜利永安镇油藏为例[J].石油与天然气地质,2006,27(1):106～110,117 Yin Zhijun,Lu Guoyong,Zou Xiang,et al.Heterogeneity of nonmarine reservoirs and its influences on recovery factor:take Gaoshangpu and Yonganzhen oil reservoirs in Jidong and Shengli oilfields as examples[J].Oil & Gas Geology,2006,27(1):106-110,117
[3] 金强,Browton J R.用生产井信息确定储层非均质性[J].石油大学学报(自然科学版),1999,23(2):18～21 Jin Qiang,Browton J R.Estimation of reservoir heterogeneity with production data[J].Journal of the University of Petroleum,China,1999,23(2):18-21
[4] 赵霞飞.河流相模式与储层非均质性[J].成都理工院学报,1999,26(4):357～364 Zhao Xiafei.Fluvial facies model and heterogeneity of fluvial reservoirs[J].Journal of Chengdu Unversity of Technology,1999,26(4):357-364
[5] 邢正岩.低渗透砂岩油藏储层非均质地质模型研究[J].石油实验地质,2003,25(5):505～508,512 Xing Zhengyan.Study on the geological model of reservoir heterogeneity in low-permeability sandstone oil pools[J].Petroleum Geology & Experiment,25(5):505～508,512
[6] 党犇,赵虹,周立发,等.辽河油田曙一区杜84块兴隆台油层储层非均质性[J].石油与天然气地质,2002,23(4):382～386 Dang Ben,Zhao Hong,Zhou Lifa,et al.Reservoir heterogeneity of Xinglongtai oil layer in Du-84 block of Shuguang-1 area,Liaohe oilfield[J].Oil & Gas Geology,2002,23(4):382-386
[7] 毕研斌,麻成斗,石红萍,等.变差函数在描述储集层平面非均质性中的应用[J].新疆石油地质,2003,24(3):251～253 Bi Yanbing,Ma Chengdou,Shi Hongping,et al.Application of variation function in description of plane heterogeneity of reservoir[J].Xinjiang Petoleum Geology,2003,24(3):251-253
[8] 于兴河,郑浚茂,宋立衡,等.断陷盆地三角洲砂体的沉积作用与储层的层内非均质性特征[J].地球科学,1997,22(1):51～55 Yu Xinghe,Zheng Junmao,Song Liheng,et al.Features of depositional processes and permeability heterogeneities in deltaic sandbodies in faulted basins[J].Earth Science,1997,22(1):51-56
[9] 杨少春.储层非均质性定量研究新方法[J].石油大学学报(自然科学版),2000,24(1):53～56 Yang Shaochun.A new method for quantitatively studying reservoir heterogeneity[J].Journal of the University of Petroleum,China,2000,24(1):53-56
[10] 杨少春,杨兆林,胡红波.熵权非均质综合指数算法及其应用[J].石油大学学报(自然科学版),2004,28(1):18～21 Yang Shaochun,Yang Zhaolin,Hu Hongbo.An algorithm of heterogeneous synthetic index with entropy weight[J].Journal of the University of Petroleum,China,2004,28(1):18-21
[11] 邓康龄,余福林.川西坳陷的复合构造与油气关系[J].石油与天然气地质,2005,26(2):214～219 Deng Kangling,Yu Fulin.Compound structures and hydrocarbons in western Sichuan depression[J].Oil & Gas Geology,2005,26(2):214-219
[12] Hilten M P,Good T R,Zaitlin B A.Heterogeneity modeling and geopseudo upscaling applied to waterflood performance prediction of an incised valley reservoir:Countess YY pool,Southern Alberta,Canade[J].AAPG Bulleitin,1998,82(12):2 220-2 245
[13] Tidwell V C,Wilson J L.Heterogeneity,permeability patterns,and permeability upscaling:physical characterization of a block of Massillon sandstone exhibition nested scales of heterogeneity[J].SPE 57002,2000,283-291
[14] 何琰,殷军,吴念胜.储层非均质性描述的地质统计学方法[J].西南石油学院学报,2001,23(3):13～15 He Yan,Yin Jun,Wu Niansheng.Geological statistics of reservoir heterogeneity description[J].Journal of Southwest Petroleum Institute,2001,23(3):13-15
[15] 高树新,杨少春,胡红波,等.胜坨油田坨21断块沙二段储层非均质性定量表征[J].油气地质与采收率,2004,11(5):10～13 Gao Shunxin,Yang Shaochun,Hu Hongbo,et al.The quantitative characterization on reservoir heterogeneities of the second member of the Shahejie Formation in Tuo 21 block,Shengtuo oilfield[J].Petroleum Geology and Recovery Efficiency,2004,11(5):10-13
[16] 唐文忠,陈彬,翟雨阳,等.深度延迟人工神经网络判别水淹程度[J].石油与天然气地质,2001,22(3):249～252 Tang Wenzhong,Chen Bin,Zhai Yuyang,et al.Application of depth-delay artificial neural network to discrimination of reservoir flooded degree[J].Oil & Gas Geology,2001,22(3):249-252
[17] 丁开盛,梁雄健.本地电话网可靠性综合评价的熵权双基点法[J].电子学报,1999,27(10):116～117 Ding Kaisheng,Liang Xiongjian.Evaluation of local telecommunication network reliability based on entropy double-sequence method[J].Acta Electronica Sinica,1999,27(10):116-117
[18] 吴秀云,伏义淑.熵权和水轮机模糊综合最佳选型[J].武汉水利电力大学学报,1999,21(1):27～31 Wu Xiuyun,Fu Yishu.Optimization of selecting water turbine types by combining entropy weight and fuzzy evaluation[J].Journal of Wuhan University of Hydraulic & Electric Engineering,1999,21(1):27-31