砂泥岩薄互储层地震预测技术应用研究
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摘要
砂泥薄互储层是陆相断陷湖盆常见的沉积岩叠加模式。由于单砂层薄、岩性变化快,薄储层岩石物理参数不明显,并受到复杂断裂影响和地震资料纵向分辨率限制,使得纵向识别薄砂层及横向预测砂体展布规律难度加大。以饶阳凹陷大王庄地区为例,基于层序地层学的多信息相控储层预测思路,采用高精度拟声波反演技术与频谱成像等技术相结合的方法,融合测井高纵向分辨率及地震高横向分辨率来提高砂泥薄互储层地震预测的可信程度,为岩性油气藏的勘探开发提供可靠依据。经过钻井验证,预测结果取得了较好的效果,可为其他地区的砂泥薄互储层地震预测提供借鉴。
Thin sand and mud interbedding is an ordinary sedimentary overlaying pattern in the land facies fault lake basin.Because of single thin sandstone and fast lithological change,the petrophysical parameter of thin reservoir is not obvious,which is affected by the complex fauliting and restricted by the vertical resolution of seismic data.This makes it more and more difficulty for vertical identification of thin sand layer and prediction of the spreading regularity for sand bodies.As an example of the area of Dawangzhuang in the Raoyang Depression,to provide a reliable base for the exploration and development of lithologic reservoirs,based on the thought of the facies-controlled reservoir predicition for much information of sequence stratigraphy,the seismic prediction credibility of the sand shale interbedding is raised by combining high precision quasi-acoustic inversion technology with spectrum imaging technique,and the integration of high vertical resolution of logging as well as high transversal resolution of seismic.The prediction results have good effect by drilling verification,It provides reference for thin interbed of sand and shale in other areas.
Thin sand and mud interbedding is an ordinary sedimentary overlaying pattern in the land facies fault lake basin.Because of single thin sandstone and fast lithological change,the petrophysical parameter of thin reservoir is not obvious,which is affected by the complex fauliting and restricted by the vertical resolution of seismic data.This makes it more and more difficulty for vertical identification of thin sand layer and prediction of the spreading regularity for sand bodies.As an example of the area of Dawangzhuang in the Raoyang Depression,to provide a reliable base for the exploration and development of lithologic reservoirs,based on the thought of the facies-controlled reservoir predicition for much information of sequence stratigraphy,the seismic prediction credibility of the sand shale interbedding is raised by combining high precision quasi-acoustic inversion technology with spectrum imaging technique,and the integration of high vertical resolution of logging as well as high transversal resolution of seismic.The prediction results have good effect by drilling verification,It provides reference for thin interbed of sand and shale in other areas.
引文
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[2]池英柳,张万选,张厚福,等.陆相断陷盆地层序成因初探[J].石油学报,1996,17(3):19-26.
[3]沈财余,崔汝国.影响测井约束地震反演地质效果因素的分析[J].物探与化探,2003,27(2):123-127.
[4]宋维琪.应用地震属性与测井数据反演储层参数[J].勘探地球物理进展,2003,26(3):216-219.
[5]王捷.油藏描述技术-勘探阶段[M].北京:石油工业出版社,1996:160-165.
[6]印兴耀,韩文功,李振春,等.地震技术新进展[M].东营:中国石油大学出版社,2006:89-95.
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