地震属性在普光气田储层地质建模中的应用
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摘要
普光气田长兴飞仙关组储集层为厚层碳酸盐岩沉积,储层孔隙受成岩作用的改造,具有很强的非均质性,给地质建模带来很大困难。另外,由于开发井网密度低,完全依赖井资料无法精确描述储层在空间上的变化特征。但是研究区内沉积相分布面积广,垂向和平面上的相带变化缓慢,并且三维地震数据品质较高,基质孔隙度曲线与地震波阻抗有良好的负相关性。针对以上情况,应用Petrel地质建模软件,充分发挥地震属性和测井数据各自的优势,建立普光气田高精度三维地质模型。
Changxing-Feixianguan Reservoirs in Puguang Gas Field were thick carbonate sediments,influenced by diagenesis reconstruction,there existed very strong heterogeneity in reservoir porosity distribution,it caused great difficulties for geological modeling.Furthermore,because of low drilling density,reservoir properties in space could not be precisely described solely based on well information.But depositional facies were widely distributed,facies belt was changed slowly in vertical and horizontal directions,quality of 3D seismic data was high,good correlation between porosity curve and seismic wave impedance was obtained.In allusion to problem stated above,a geological modeling software Petrel is used to establish a high accuracy 3D geologic model by fully using the advantages of seismic attribute and seismic wave impedance.
Changxing-Feixianguan Reservoirs in Puguang Gas Field were thick carbonate sediments,influenced by diagenesis reconstruction,there existed very strong heterogeneity in reservoir porosity distribution,it caused great difficulties for geological modeling.Furthermore,because of low drilling density,reservoir properties in space could not be precisely described solely based on well information.But depositional facies were widely distributed,facies belt was changed slowly in vertical and horizontal directions,quality of 3D seismic data was high,good correlation between porosity curve and seismic wave impedance was obtained.In allusion to problem stated above,a geological modeling software Petrel is used to establish a high accuracy 3D geologic model by fully using the advantages of seismic attribute and seismic wave impedance.
引文
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[2]王一刚.四川盆地二叠、三叠系环海槽礁、滩富气带勘探[J].天然气工业,2008,28(1):22～27.
[3]杨晓萍,赵文智,曹宏,等.川东北三叠系飞仙关组鲕滩气藏有利储集层的形成与分布[J].石油勘探与开发,2006,27(1):17～21.
[4]马永生,牟传龙,郭旭升,等.四川盆地东北部长兴期沉积特征与沉积格局[J].地质论评,2006,52(1):25～29.
[5]刘殊,唐建明,马永生,等.川东北地区长兴组飞仙关组礁滩相储层预测[J].石油与天然气地质,2006,27(3):334～347.
[6]魏国齐,杨威,张林,等.川东北飞仙关组鲕滩储层白云石化成因模式[J].天然气地球科学,2005,16(2):162～167.
[7]马永生,郭彤楼,朱光有,等.硫化氢对碳酸盐储层溶蚀改造作用的模拟实验证据——以川东飞仙关组为例[J].科学通报,2007,52(1):135～141.
[8]刘超,赵春明,邱婷,等,油藏地质建模与数值模拟一体化技术在旅大4-2油田钻前优化及随钻调整中的应用[J].中国海上油气,2007,19(1):38～44.
[9]刘建华,赵春明,霍春亮,等.地震资料在地质建模中的应用方法探讨——以旅大27-2油田相建模为例[J].石油天然气学报,2011,33(2):50～53.
[10]白宝玲,赵洪洲.地震多属性综合分析技术在储层预测中的应用[J].石油天然气学报,2010,32(1):246～248.
[11]李凤君,庞雄奇,辛广柱,等,地层物性变化对地震属性的影响[J].大庆石油学院学报,2005,29(4):7～10.
[12]孙立春,高博禹,李敬功.储层地质建模参数不确定性研究方法探讨[J].中国海上油气,2009,21(1):35～38.
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