一体化地质建模在新近系礁灰岩储层定量表征中的应用
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摘要
以LH油田三维地质建模为实例,针对礁灰岩储层内部结构复杂的情况,提出了一种综合应用地震、测井及地质资料进行礁灰岩储层研究和地质建模的方法。LH油田主要含油层段为中新统珠江组礁灰岩,储层为台地边缘生物礁相,储层内部结构复杂。以井震资料为基础,以生物礁沉积过程和成岩作用为指导,对礁体内部结构进行了分析,预测了主力油层内部的差物性层空间展布。在地质模式、井点信息和地震属性约束下,采用随机模拟的手段,建立了地质模型,实现了多学科综合的储层定量表征,对无井区储层特征进行了预测,为开发方案的设计提供了地质依据。
Taking LH Oilfield as an example,a method of integrated geological modeling,using seismic,log and geological data,was applied to the characterization of Neocene reef reservoir.The reservoir of LH Oilfield belongs to Neocene Zhujiang Formation,a typical Neocene fringing reef on the carbonate platform margin.In order to predict the complicated inner stratum frame,a workflow was put foreward.Based on incorporated analysis of 3-D seismic data,cores and logs,the depositional and diagenetic process was figured out,and thus the inner frame of reef was worked out.Under the constraint of geological frame,logs and seismic attribution,a geological reservoir model was built up with stochastic modeling method.The prediction of reservoir characteristics in reef flat area,based on the study and geological model,has been proved by a new well.
Taking LH Oilfield as an example,a method of integrated geological modeling,using seismic,log and geological data,was applied to the characterization of Neocene reef reservoir.The reservoir of LH Oilfield belongs to Neocene Zhujiang Formation,a typical Neocene fringing reef on the carbonate platform margin.In order to predict the complicated inner stratum frame,a workflow was put foreward.Based on incorporated analysis of 3-D seismic data,cores and logs,the depositional and diagenetic process was figured out,and thus the inner frame of reef was worked out.Under the constraint of geological frame,logs and seismic attribution,a geological reservoir model was built up with stochastic modeling method.The prediction of reservoir characteristics in reef flat area,based on the study and geological model,has been proved by a new well.
引文
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[2]马永生,梅冥相,陈小兵,等.碳酸盐岩储层沉积学[M].北京:地质出版社,1999.
[3]福里格.碳酸盐岩微相——分析、解释及应用[M].马永生,译.北京:地质出版社,2006.
[4]陆亚秋,龚一鸣.海相油气区生物礁研究现状、问题与展望[J].地球科学——中国地质大学学报,2007,32(6):871-878.
[5]陈国威.南海生物礁及礁油气藏形成的基本特征[J].海洋地质动态,2003,19(7):32-37.
[6]施和生,杨少坤.珠江口盆地大型礁油田地质特征[M]//中国工程院,环太平洋能源与矿产资源理事会,中国石油学会.21世纪中国暨国际油气勘探展望.北京:中国石化出版社,2003:415-419.
[7]胡平忠,王金中.珠江口盆地第三纪生物礁[M]//范嘉松.中国生物礁与油气.北京:海洋出版社,1996:294-323.
[8]刘殊,郭旭升,马宗晋,等.礁滩相地震响应特征和油气勘探远景[J].石油物探,2006,45(5):452-458.
[9]余辉龙,薛良清,杨福忠,等.印度尼西亚萨拉瓦提盆地第三系Kais组碳酸盐岩生物礁圈闭特征[J].现代地质,2005,19(3):409-415.
[10]王黎栋,于炳松,张永旺,等.塔里木盆地西部康克林组沉积期生物礁滩体——以柯坪地区苏巴什露头剖面为例[J].现代地质,2006,20(2):291-298.
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