地震属性在沉积相研究中的应用——以莱阳凹陷白垩系莱阳组水南段为例
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摘要
莱阳凹陷发现了大量的油气显示和油砂,说明该盆地有油气生成和油气的聚集,但钻孔未取得突破。为改变此现状,充分应用盆地内钻井取心资料,编制了岩心单井相分析柱状图。结合水南段沉积期特点,将莱阳盆地白垩系莱阳组水南段的沉积相划分为冲积扇、辫状河、扇三角洲、滨浅湖、深湖半深湖、近岸水下扇6种沉积相类型。在层序地层学理论指导下,将地质研究与地球物理手段相结合,对莱阳组地震资料进行综合解释、对地震相进行分析及对地震属性进行提取,再综合考虑原型盆地类型和区域构造背景,得出水南段的沉积相分布特征,对取得勘探突破具有重要意义。
A great deal of oil and gas and oil sand are found in Laiyang Sag,which shows that oil and gas were generated and accumulated in the basin.However,drilling doesn't indicate the existence of oil and gas.In order to solve this problem,coring data are fully applied to compile column diagram of facies analyses of a single well.The sedimentary facies of Shuinan Member of Laiyang Formation of the Cretaceous System of Laiyang Sag is classified into 6 facieses by combining the sedimentary properties of Shuinan Member,namely,alluvial fan,braided river,fan delta,shallow shore lacustrine,deep lake and semi-deep lacustrine and near-shore subaqueous fan.Based on the theory of sequence stratigraphy and the combination of geology study with geophysics,the seismic data of Laiyang Formation are comprehensively interpreted,seismic facies is analyzed and seismic attribute is picked up.Based on the work done above and the consideration of the prototype of the basin and the regional structure background,the distribution features of sedimentary facies of Shuinan Member are derived and are significant to the exploration breakthrough of Shuinan Member.
A great deal of oil and gas and oil sand are found in Laiyang Sag,which shows that oil and gas were generated and accumulated in the basin.However,drilling doesn't indicate the existence of oil and gas.In order to solve this problem,coring data are fully applied to compile column diagram of facies analyses of a single well.The sedimentary facies of Shuinan Member of Laiyang Formation of the Cretaceous System of Laiyang Sag is classified into 6 facieses by combining the sedimentary properties of Shuinan Member,namely,alluvial fan,braided river,fan delta,shallow shore lacustrine,deep lake and semi-deep lacustrine and near-shore subaqueous fan.Based on the theory of sequence stratigraphy and the combination of geology study with geophysics,the seismic data of Laiyang Formation are comprehensively interpreted,seismic facies is analyzed and seismic attribute is picked up.Based on the work done above and the consideration of the prototype of the basin and the regional structure background,the distribution features of sedimentary facies of Shuinan Member are derived and are significant to the exploration breakthrough of Shuinan Member.
引文
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[2]姜在兴,熊继辉,王留奇,等.胶莱盆地下白垩统莱阳组沉积作用和沉积演化[J].石油大学学报:自然科学版,1993,17(2):8-12.
[3]纪友亮,张世奇.陆相断陷湖盆层序地层学[M].北京:石油工业出版社,1996:35-80.
[4]周勇,纪友亮.山东省胶莱盆地东北部下白垩统莱阳组震积岩特征及地质意义[J].古地理学报,2011,13(5):519-523.
[5]曾忠,等.地震属性解释技术的研究及确定性分析[J].天然气工业,2006,26(3):42-43.
[6]李坦,殷小舟.地震属性的地质意义分析[J].复杂油气藏,2009,2(3):26-28.
[7]周路,李新豫,吾许克,等.地震属性分析技术在断层地层圈闭识别中的应用——以车排子地区清水河组为例[J].天然气地球科学,2011,22(5):898-899.
[8]于建国,姜秀清.地震属性优化在储层预测中的应用[J].石油与天然气地质,2003,24(3):291-294.
[9]王永刚,乐友喜,等.地震属性与储层特征的相关性研究[J].石油大学学报:自然科学版,2004,28(1):29-32.
[10]张永刚.油气地球物理技术新进展[M].北京:石油工业出版社,2004:224-238.
[11]陈启林,杨占龙.岩性油气藏勘探方法与技术[J].天然气地球科学,2006,17(5):622-626.
[12]杨占龙,彭立才,等.地震属性分析与岩性油气藏勘探[J].石油物探,2007,46(2):131-135.
[13]纪形洲,丘津,王冰.应用地球物理信息预测河道砂体方法及应用效果分析[J].特种油气藏,2003,10(S0):4-6.
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