分频解释技术及其在陆相砂岩地层地震勘探中的应用分析
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摘要
利用分频解释原理沿着目的储层或固定时窗对地震反射成分中各种频率成分对应的调谐能量进行识别成像,并以此解释技术来识别砂体的空间展布形态、相对沉积厚度及薄互层叠置关系。某地区目的层—沙溪庙组以一套河流-三角洲沉积为主,且薄互层发育,单层厚度多在20 m以下,基于传统地震属性分析(振幅、相位等)的有效分辨率、检测极限的限制,为了能更精细刻画砂体边界和寻找相对有利储集相带,首次将分频解释技术加以运用,分析成像结果显示古河道、水下分流河道、三角洲前缘席状砂体等外形和边界异常清晰,相对沉积厚度关系明确,十米左右的薄层砂体均能得到很好的响应,与已知钻井情况吻合率达95%以上。
Interpretation principle of frequency division is used to identify the syntony energy corresponding to the seismic reflection along certain reservoir and fixed time-window,and determine the spatial distribution shape,sedimentary thickness and relative thickness of the reservoir beds.The a certain strata,which is characterized by river to delta sedimentation with thin alternation layers less than 20 meters,is taken as a target beds for the research.The traditional analysis of seismic property is restricted by effective resolution and detecting limit.So the interpretation of frequency division is,for the first time,used to precisely delineate the boundary of sand bodies and look for the favorable reservoir facies.It is showed that the final result of analysis images is very clear in demonstrating the shape and boundary of the ancient river courses,sheet-shape sand bodies in the front of delta and the thickness of the beds,even those beds with their thickness less than 10 meters.The precision of this technique is high and can reaches 95%.
Interpretation principle of frequency division is used to identify the syntony energy corresponding to the seismic reflection along certain reservoir and fixed time-window,and determine the spatial distribution shape,sedimentary thickness and relative thickness of the reservoir beds.The a certain strata,which is characterized by river to delta sedimentation with thin alternation layers less than 20 meters,is taken as a target beds for the research.The traditional analysis of seismic property is restricted by effective resolution and detecting limit.So the interpretation of frequency division is,for the first time,used to precisely delineate the boundary of sand bodies and look for the favorable reservoir facies.It is showed that the final result of analysis images is very clear in demonstrating the shape and boundary of the ancient river courses,sheet-shape sand bodies in the front of delta and the thickness of the beds,even those beds with their thickness less than 10 meters.The precision of this technique is high and can reaches 95%.
引文
[1]陆基孟.地震勘探原理[M].北京:石油工业出版社,1982.
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[3]赤钧.三维地震勘探技术[M].北京:石油工业出版社,1992
[4]美J.F.克莱鲍特著,许云译.地震成像理论方法[M].石油工业出版社,1991.
[5]Jsqu ires,Sek haran K K,C ardner C H F.三维地震法对薄层分辨率的改善[A].美国勘探地球物理学家学会.第55届年会论文集[C],1997.
[6]胡光义,王加瑞,武士尧.利用地震分频处理技术预测河流相储层-基于精细储层预测调整海上高含水油田开发方案实例[J].中国海上油气,2005,17(4).
[7]Sandra K.In tegrating 3D se ism ic im ag ing and se ism ic attribu te ana lysis w ith genetic stratigraphy:im p lications for in field reserve grow thand field ex tension Budare F ield,V enezueca[J].The lead ing Edge,199,16(9):1 338-1 339.
[8]Jianyun Chen,Jing L i,Jing Zhou.Se ism ic ana lysis of large 3-D underground caverns based on h igh perform ance recursive m ethod[J].In ternationa l Journa l of So lids and Structures,2004,41:3 081-3 094.
[9]蔡瑞.基于谱分解技术的缝洞型碳酸盐岩溶洞识别方法[J].石油勘探与开发,32(2期).
[10]杨占龙,黄云峰,郭精义.地震信息的参数综合分析与岩性圈闭识别、优选和评价[J].西北油气勘探,2005,17(3).
[11]蔡刚,吕锡敏,龙洪林,等.物探解释技术对在隐蔽油气藏勘探中的应用-以准噶尔盆地为例[J].西北油气勘探,2005,17(2).
[12]李庆忠.走向精细勘探的道路[M].北京:石油工业出版社,1993.
[2]C lochard V C t a l.3C im ag ing of 3D w a lk-aw ay data in regard to preprocessing[J].SEG Expanded Abstracts,1998.
[3]赤钧.三维地震勘探技术[M].北京:石油工业出版社,1992
[4]美J.F.克莱鲍特著,许云译.地震成像理论方法[M].石油工业出版社,1991.
[5]Jsqu ires,Sek haran K K,C ardner C H F.三维地震法对薄层分辨率的改善[A].美国勘探地球物理学家学会.第55届年会论文集[C],1997.
[6]胡光义,王加瑞,武士尧.利用地震分频处理技术预测河流相储层-基于精细储层预测调整海上高含水油田开发方案实例[J].中国海上油气,2005,17(4).
[7]Sandra K.In tegrating 3D se ism ic im ag ing and se ism ic attribu te ana lysis w ith genetic stratigraphy:im p lications for in field reserve grow thand field ex tension Budare F ield,V enezueca[J].The lead ing Edge,199,16(9):1 338-1 339.
[8]Jianyun Chen,Jing L i,Jing Zhou.Se ism ic ana lysis of large 3-D underground caverns based on h igh perform ance recursive m ethod[J].In ternationa l Journa l of So lids and Structures,2004,41:3 081-3 094.
[9]蔡瑞.基于谱分解技术的缝洞型碳酸盐岩溶洞识别方法[J].石油勘探与开发,32(2期).
[10]杨占龙,黄云峰,郭精义.地震信息的参数综合分析与岩性圈闭识别、优选和评价[J].西北油气勘探,2005,17(3).
[11]蔡刚,吕锡敏,龙洪林,等.物探解释技术对在隐蔽油气藏勘探中的应用-以准噶尔盆地为例[J].西北油气勘探,2005,17(2).
[12]李庆忠.走向精细勘探的道路[M].北京:石油工业出版社,1993.
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