地震反演、地质协同约束储层精细建模研究
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摘要
针对强非均质油藏,需要综合运用多尺度信息来进行精细描述,以提高井间及外围预测模型的精度和确定性。以红柳泉地区E13油藏为例,分别探讨了单纯变差函数、相控、地震属性体约束建模的优、缺点,确定了多信息协同约束综合建模的研究思路。以测井相为井点数据,以反演砂体厚度图为平面约束,刻画沉积微相的平面展布;同时以测井解释数据为硬数据,采用沉积微相控制、地震反演协同体约束建立储层的泥质含量模型,进一步利用阈值离散化得到岩相模型。多信息协同约束综合建模利用了地震资料横向连续性好,测井资料纵向分辨率高,沉积微相反映地质沉积规律等优点,弥补了变差函数多解性强、地震数据纵向分辨率低、井间预测对数据密度要求苛刻、相控模拟沉积模式化严重等缺陷,在实际应用中取得了较好的预测效果,可作为解决储层表征难题的重要策略。
Aiming at the fine reservoir characterization of strong non-homogeneity,multi-scale information should be integrated to improve the model's accuracy and certainty of inter-well and periphery.Taking Hongliuquan oilfield as an example,we explored merits and drawbacks of variation function analytic,sedimentary microfacies-controlled and seismic attribute body constraint modeling and determined research approach of multi-information integrated modeling.With the constraints of sandstone thickness by seismic inversion,the microfacies planar distribution is characterized by using electro-facies as well point data.Based on well-logging,we built the V-shale model with sedimentary microfacies and seismic inversion collaborative constrain,and then discretized it into lithofacies model by a threshold.This method took advantages of seismic data with lateral continuity,well logging data with high vertical resolution,geological depositional patterns of microfacies etc.,and made up the disadvantage of the inter-well multi-solution by variogram function,low vertical resolution of seismic data,the demanding data density in inter-well prediction,patternized sedimentary model.Good prediction effect is obtained in practical application.So this research can be used as an important strategy for reservoir description.
Aiming at the fine reservoir characterization of strong non-homogeneity,multi-scale information should be integrated to improve the model's accuracy and certainty of inter-well and periphery.Taking Hongliuquan oilfield as an example,we explored merits and drawbacks of variation function analytic,sedimentary microfacies-controlled and seismic attribute body constraint modeling and determined research approach of multi-information integrated modeling.With the constraints of sandstone thickness by seismic inversion,the microfacies planar distribution is characterized by using electro-facies as well point data.Based on well-logging,we built the V-shale model with sedimentary microfacies and seismic inversion collaborative constrain,and then discretized it into lithofacies model by a threshold.This method took advantages of seismic data with lateral continuity,well logging data with high vertical resolution,geological depositional patterns of microfacies etc.,and made up the disadvantage of the inter-well multi-solution by variogram function,low vertical resolution of seismic data,the demanding data density in inter-well prediction,patternized sedimentary model.Good prediction effect is obtained in practical application.So this research can be used as an important strategy for reservoir description.
引文
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[12]Lv Xiaoguang,Zhang Yongqing,Chen Bin,et al.Facies-controlled modeling for mature developed oilfield by integrating determinacy and stochastic methods[J].Acta Petrolei Sinica,2004,25(5):60-64.[吕晓光,张永庆,陈兵,等.深度开发油田确定性与随机建模结合的相控建模[J].石油学报,2004,25(5):60-64.]
[13]Yu Xinghe,Ma Xingxiang,Mu Longxin.Analysis of Braided River Reservoir Geological Model and Hierarchy Interface[M].Beijing:Petroleum Industry Press,2004:1-207.[于兴河,马兴祥,穆龙新.辫状河储层地质模式及层次界面分析[M].北京:石油工业出版社,2004:1-207.]
[14]Zhao Fan,Sun Deqiang,Yan Cunfeng,et al.Meso-Cenozoic tectonic evolution of Qaidam Basin and its relationship with oil and gas accumulation[J].Nature Gas Geoscience,2013,24(5):940-947.[赵凡,孙德强,闫存凤,等.柴达木盆地中新生代构造演化及其与油气成藏关系[J].天然气地球科学,2013,24(5):940-947.]
[2]Qiu Yinan,Jia Ailin.Research achievements on reservoir geological modeling in the past decade[J].Acta Petrolei Sinica,2000,21(4):101-104.[裘怿楠,贾爱林.储层地质模型10年[J].石油学报,2000,21(4):101-104.]
[3]Wu Shenghe,Liu Yin.3Dstochastic modeling of sedimentary microfacies with geological and seismic data[J].Journal of Palaeogeography,2003,4(5):439-449.[吴胜和,刘英.应用地质和地震信息进行三维沉积微相随机建模[J].古地理学报,2003,4(5):439-449.]
[4]Jia Yumei,Xu Fang,Chen bin,et al.Three-dimensional geological reservoir modeling of thin beds based on seismic data:A case on Chenghai Oilfield II area[J].Nature Gas Geoscience,2010,21(5):833-835.[贾玉梅,徐芳,陈斌,等.基于地震资料的薄互层储层三维地质建模——以埕海油田二区为例[J].天然气地球科学,2010,21(5):833-835.]
[5]Mu Zhiquan,Zhou Lihong,Zhang Yanxiang,et al.Application of seismic-geologic integrative reservoir prediction technique in Gu533block of Daqing Oilfield[J].Oil Geophysical Prospecting,2009,44(3):323-325.[牟智全,周立宏,张彦湘,等.地震—地质综合储层预测技术在大庆油田G533区块的应用[J].石油地球物理勘探,2009,44(3):323-325.]
[6]Dou Songjiang,Zhao Yuwen,Xu Fang,et al.Difficulties and countermeasures of geological modeling in Chenghai Oilfield[J].Nature Gas Geoscience,2010,21(4):652-853.[窦松江,赵郁文,徐芳,等.埕海油田地质建模过程中的难点及对策[J].天然气地球科学,2010,21(4):652-853.]
[7]Chen Gongyang,Hu Yong,Zhou Yanli et al.Methods and practices of reservoir geologic modeling constrained by seismic impedance[J].Earth Science Frontiers,2012,19(2):67-73.[陈恭洋,胡勇,周艳丽,等.地震波阻抗约束下的储层地质建模方法与实践[J].地学前缘,2012,19(2):67-73.]
[8]Sun Lichun,Gao Boyu.Reservior digital geomodel based on sand body unit traced through seismic interpretation[J].Natural Gas Industry,2008,28(8):43-45.[孙立春,高博禹.基于地震解释砂体单元的储层数字地质建模[J].天然气工业,2008,28(8):43-45.]
[9]Jiang Yiwei,Liu Honglei,Yang Futao,et al.Seismic-constrained reservoir modeling and its application in the Puguang Gas Field[J].Natural Gas Industry,2011,31(3):14-17.[姜贻伟,刘红磊,杨福涛,等.震控储层建模方法及其在普光气田的应用[J].天然气工业,2011,31(3):14-17.]
[10]Gui Feng,Huang Zhihui,Ma Zhen.Application of lithofaciescontrolled model to prediction of physical parameters between wells[J].Earth Science,2001,26(1):49-53.[桂峰,黄智辉,马正.利用相控模型进行井间参数预测[J].地球科学,2001,26(1):49-53.]
[11]Wu Shenghe,Zhang Yiwei,Li Shujun,et al.Geological constraint principles in reservoir stochastic modeling[J].Journal of the University of Petroleum,China,2001,25(1):55-58.[吴胜和,张一伟,李恕军,等.提高储层随机建模精度的地质约束原则[J].石油大学学报:自然科学版,2001,25(1):55-58.]
[12]Lv Xiaoguang,Zhang Yongqing,Chen Bin,et al.Facies-controlled modeling for mature developed oilfield by integrating determinacy and stochastic methods[J].Acta Petrolei Sinica,2004,25(5):60-64.[吕晓光,张永庆,陈兵,等.深度开发油田确定性与随机建模结合的相控建模[J].石油学报,2004,25(5):60-64.]
[13]Yu Xinghe,Ma Xingxiang,Mu Longxin.Analysis of Braided River Reservoir Geological Model and Hierarchy Interface[M].Beijing:Petroleum Industry Press,2004:1-207.[于兴河,马兴祥,穆龙新.辫状河储层地质模式及层次界面分析[M].北京:石油工业出版社,2004:1-207.]
[14]Zhao Fan,Sun Deqiang,Yan Cunfeng,et al.Meso-Cenozoic tectonic evolution of Qaidam Basin and its relationship with oil and gas accumulation[J].Nature Gas Geoscience,2013,24(5):940-947.[赵凡,孙德强,闫存凤,等.柴达木盆地中新生代构造演化及其与油气成藏关系[J].天然气地球科学,2013,24(5):940-947.]
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