东营凹陷现河油田河道型储层研究方法
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摘要
根据岩心、录井和测井资料,对东营凹陷现河油田王家岗地区沙二段上部河道砂体沉积相类型及其特征进行了研究。结合沉积的古地理格局和物源方向的继承性,运用趋势面分析和泥岩颜色分区法,对物源方向进行的综合分析表明,王3区块沙二段第1~第4砂组的物源主要来自南方。在储层研究方面,利用砂体钻遇率及砂体平均厚度变化曲线分析方法,从另一个角度阐明了储层的发育特征;同时,应用储层随机建模、神经网络预测法和地震相干分析法,对王3区块沙二段第1~第4砂组的储层厚度、孔隙度、各层段砂体的分布特征和典型单砂体进行了预测,为油气滚动勘探开发部署提供了依据。
On the basis of core observation and logging data,the sedimentary facies and their characteristics of stream channel reservoir in the second member of Shahejie Formation in Xianhe Oilfield of Dongying Depression were studied.The trend surface analysis and shale color district figure combining with sedimentary palaeogeographic pattern and inherit of provenance direction were applied to analyze provenance direction.The analysis result showed that the provenance from first to fourth group in the second member of Shahejie Formation in the third area of Wangjiagang Oilfield was mainly derived from the south part of the study area.The drilling ratio analysis method and the average thickness curves of sand body can illustrate the features of reservoir.The suitable drilling profile was applied to stochastically modeling of reservoir, and the artificial neural network method was used to predict reservoir thickness and porosity from the first to fourth group in the second member of Shahejie Formation.The result is in good agreement with those known well data.The seismic coherence cube technology was used to remove noise and interpret seismic data for finding out types,features and geologic attributes of correlation abnormal volume,researching on the time-space appearances and distribution of every sand layer and predicting the typical single sand-body.The results provided evidence for petroleum exploration and development.
On the basis of core observation and logging data,the sedimentary facies and their characteristics of stream channel reservoir in the second member of Shahejie Formation in Xianhe Oilfield of Dongying Depression were studied.The trend surface analysis and shale color district figure combining with sedimentary palaeogeographic pattern and inherit of provenance direction were applied to analyze provenance direction.The analysis result showed that the provenance from first to fourth group in the second member of Shahejie Formation in the third area of Wangjiagang Oilfield was mainly derived from the south part of the study area.The drilling ratio analysis method and the average thickness curves of sand body can illustrate the features of reservoir.The suitable drilling profile was applied to stochastically modeling of reservoir, and the artificial neural network method was used to predict reservoir thickness and porosity from the first to fourth group in the second member of Shahejie Formation.The result is in good agreement with those known well data.The seismic coherence cube technology was used to remove noise and interpret seismic data for finding out types,features and geologic attributes of correlation abnormal volume,researching on the time-space appearances and distribution of every sand layer and predicting the typical single sand-body.The results provided evidence for petroleum exploration and development.
引文
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[2]高平,李丽君.东营凹陷中央隆起带东营组构造及成藏条件研究———以现河庄油田为例[J].断块油气田,2004,11(2):26-28.Gao Ping,Li Lijun.Study of structure and pool-forming conditionof Dongying Formation in the central uplift of Dongying Sag[J].Fault-Block Oil and Gas Field,2004,11(2):26-28.
[3]胡光明,纪友亮,贾爱林,等.鄂尔多斯盆地苏里格地区二叠系河流相地层砂体展布规律[J].油气地质与采收率,2004,11(1):4-6.Hu Guangming,Ji Youliang,Jia Ailin,et al.Spreading rule of thefluvial facies sandbody of Permian in Sulige area of Eerduosi Basin[J].Petroleum Geology and Recovery Efficiency,2004,11(1):4-6.
[4]王新征.东营凹陷王家岗地区沙二段上部水道砂体成因类型及空间展布特征[J].江汉石油学院学报,2004,23(3):46-47.Wang Xinzheng.Genetic types and its spatial distributed charac-teristics of the channel sandbody in the upper part of the2ndmember of the Shahejie Formation in the Wangjiagang area of theDongying Depression,Shengli Oilfield[J].Journal of Jianghan Pe-troleum Institute,2004,23(3):46-47.
[5]薛家锋,王家华,祖小京,等.多次储层随机建模与砂体预测符合率[J].石油学报,2003,24(5):79-83.Xue Jiafeng,Wang Jiahua,Zu Xiaojing,et al.Multi-stochastical re-alization of reservoir modeling and conformation rate of sandbodyprediction[J].Acta Petrolei Sinica,2003,24(5):79-83.
[6]赵翰卿,付志国,吕晓光,等.大型河流—三角洲沉积储层精细描述方法[J].石油学报,2000,21(4):109-113.Zhao Hanqing,Fu Zhiguo,LüXiaoguang,et al.Methods for de-tailed description of large fluvial-delta depositional reservoir[J].Acta Petrolei Sinica,2000,21(4):109-113.
[7]李少华,张昌民,林克湘,等.应用改进的布尔方法建立砂体骨架模型[J].石油勘探与开发,2000,27(3):91-92,95.Li Shaohua,Zhang Changmin,Lin Kexiang,et al.Using the im-proved Boolean method to model sandbody framework[J].Petro-leum Exploration and Development2000,27(3):91-92,95.
[8]侯伯刚,乌达巴拉,杨再岩.地震相干体技术简介及其应用[J].现代地质,1999,13(1):121-124.Hou Bogang,Wuda Bala,Yang Zaiyan.Seismic coherence cubetechnology and its application[J].Geoscience,1999,13(1):121-124.
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