应用多属性聚类分析方法研究南黄海盆地二叠系沉积特征
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摘要
地层参数的变化引起地震属性的变化,但是地层参数与地震属性的变化并没有一一对应的关系,这就带来了通过地震数据反演储层、岩性参数的多解性问题,因而采用多属性综合研究是重要的手段之一。南黄海盆地钻井较少,单井控制面积较大,利用地震属性信息研究了南黄海盆地二叠系沉积特征;并采用神经网络算法,提取了对岩性参数敏感的均方根振幅、反射强度、相对波阻抗、主频、平均瞬时频率5种地震属性;对南黄海盆地二叠系地层进行属性聚类分析,刻画出砂岩和灰岩2种岩相的分布特征,不仅避免了单一地震属性的多解性问题,同时突显了二叠系下统栖霞组灰岩之上的碎屑岩特征。结合井—震分析,确定南黄海盆地二叠系龙潭—大隆组沉积时期主要发育陆棚相、潮坪—潟湖—沼泽相及河流相。
The change in formation parameters causes the change in seismic attributes.But it is not a one-to-one relationship between the changes.Multi-solution problem comes from the reservoir parameters inversion of seismic data,and multi-attribute integration is one of the important means to solve the problem.In the South Yellow Sea Basin,drilling holes are rare and the single well control area is very large.Therefore,it becomes a necessity to make full use of seismic attributes information for facies analysis of the Permian Longtan and Dalong Formations.In this paper,the RMS amplitude,reflection intensity,relative acoustic impedance,dominant frequency,and average instantaneous frequency are all used to cluster analysis of Permian Formations by neural network algorithm.The results show the distribution pattern of sandstone and limestone lithofacies.The process not only avoids the multi-solution problem of a seismic attribute,but also reveals the characteristics of the clastic rock above the lower Permian Qixia limestone.Combined with well-seismic analysis,it is concluded that various facies,such as continental shelf facies,tidal flat-lagoon-swamp facies and fluvial facies are well developed during the Longtan-Dalong sedimentary period of Permian
The change in formation parameters causes the change in seismic attributes.But it is not a one-to-one relationship between the changes.Multi-solution problem comes from the reservoir parameters inversion of seismic data,and multi-attribute integration is one of the important means to solve the problem.In the South Yellow Sea Basin,drilling holes are rare and the single well control area is very large.Therefore,it becomes a necessity to make full use of seismic attributes information for facies analysis of the Permian Longtan and Dalong Formations.In this paper,the RMS amplitude,reflection intensity,relative acoustic impedance,dominant frequency,and average instantaneous frequency are all used to cluster analysis of Permian Formations by neural network algorithm.The results show the distribution pattern of sandstone and limestone lithofacies.The process not only avoids the multi-solution problem of a seismic attribute,but also reveals the characteristics of the clastic rock above the lower Permian Qixia limestone.Combined with well-seismic analysis,it is concluded that various facies,such as continental shelf facies,tidal flat-lagoon-swamp facies and fluvial facies are well developed during the Longtan-Dalong sedimentary period of Permian
引文
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[19]师政,邱隆伟,张阳,等.基于地震属性聚类的岩相分析方法及应用—以南堡凹陷奥陶系潜山储层为例[J].2015,44(4):688-695.
[20]曹中宏,刘国勇,张红臣,等.南堡凹陷及周边凸起区古生界碳酸盐岩溶解特性的实验研究[J].中国石油大学学报:自然科学版,2014,38(1):8-13.
[21]温书亮,刘志斌,何峰.地震多属性聚类分析技术及其在渤海某区块油气预测中的应用[J].天然气工业,2007,27(A):373-374.
[22]曲希玉,刘立,陈建文,等.南黄海盆地北部坳陷白垩系沉积特征[J].吉林大学学报:地球科学版,2005,35(4):443-448.
[2]印兴耀,韩文功,李振春,等.地震技术新进展[M].北京:石油工业出版社,2006:58-60.
[3]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.
[4]吴淑玉,刘俊,肖国林,等.地震多属性预测技术在南黄海二叠系至三叠系沉积分析中的应用[J].海洋地质与第四纪地质,2011,31(5):109-116.
[5]任莉萍,李玉清,曹国银,等.多属性聚类分析技术在FL、YX地区含气性预测中的应用[J].天然气工业,2007,27(9):338-341.
[6]印兴耀,周静毅.地震属性优化方法综述[J].石油地球物理勘探,2005,40(4):482-489.
[7]张海啟,陈建文,李刚,等.地震调查在南黄海崂山隆起的发现及其石油地质意义[J].海洋地质与第四纪地质,2009,29(3):107-113.
[8]陈建文,龚建明,李刚,等.南黄海盆地海相中—古生界油气资源潜力巨大[J].海洋地质前沿,2016,32(1):1-7.
[9]蔡乾忠.中国东部与朝鲜大地构造单元对应划分[J].海洋地质与第四纪地质,1995,15(1):7-24.
[10]李慧君.南黄海盆地海相中—古生界构造区划[J].海洋地质前沿,2014,30(10):8-13.
[11]袁勇,陈建文,张银国,等.南黄海盆地崂山隆起海相中—古生界构造地质特征[J].海洋地质前沿,2016,32(1):48-53.
[12]姚永坚,冯志强,郝天珧.对南黄海盆地构造层特征及含油气性的新认识[J].地质前缘,2008,15(6):232-240.
[13]陈建文.南黄海前第三系油气前景研究成果报告[R].青岛:青岛海洋地质研究所,2009:20-100.
[14]杨长清,董贺平,李刚.南黄海盆地中部隆起的形成与演化[J].海洋地质前沿,2014,30(7):17-21.
[15]雷宝华,陈建文,李刚,等.南黄海盆地二叠系地震地层特征与识别[J].海洋地质前沿,2016,32(1):29-34.
[16]王永刚,乐友喜,张军华.地震属性分析技术[M].东营:中国石油大学出版社,2007:97-100.
[17]王开燕,徐清彦,张桂芳,等.地震属性分析技术综述[J].地球物理学进展,2013,8(2):815-823.
[18]吴雨花,桂志先,于亮,等.地震属性分析技术在西南庄—柏各庄地区储层预测中的应用[J].石油天然气学报,2007,29(3):391-393.
[19]师政,邱隆伟,张阳,等.基于地震属性聚类的岩相分析方法及应用—以南堡凹陷奥陶系潜山储层为例[J].2015,44(4):688-695.
[20]曹中宏,刘国勇,张红臣,等.南堡凹陷及周边凸起区古生界碳酸盐岩溶解特性的实验研究[J].中国石油大学学报:自然科学版,2014,38(1):8-13.
[21]温书亮,刘志斌,何峰.地震多属性聚类分析技术及其在渤海某区块油气预测中的应用[J].天然气工业,2007,27(A):373-374.
[22]曲希玉,刘立,陈建文,等.南黄海盆地北部坳陷白垩系沉积特征[J].吉林大学学报:地球科学版,2005,35(4):443-448.