叠前同时反演技术在砂砾岩体有效储层预测中的应用
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摘要
东营凹陷北部陡坡带发育大量的砂砾岩体,地震剖面上表现为顶强内乱的地震反射特征。由于砂砾岩扇体根部自身具有油气封堵能力,中深层砂砾岩体多数含油。但从目前开发情况看,砂砾岩体内部物性、含油性变化快,因此在该区开展储层物性预测及油气检测工作尤为重要。叠前同时反演技术利用叠前分角度叠加数据及纵波、横波、密度测井资料,可以同时反演出与储层岩性、物性相关的多种岩石物理参数和弹性参数,用于综合判别储层的物性及含油气性。在东营北带中深层I类AVO响应的砂砾岩体物性及含油气性预测中,利用叠前同时反演较为准确地预测了砂砾岩体有效储层及其平面分布范围,为砂砾岩体油藏的开发提供了可靠的依据。
Abundant sand-gravel body is developed in the north of the steep-slope zone of Dongying Sag,which displays strong top reflection and disordered internal reflection on the seismic sections.Because of the hydrocarbon sealing ability in the root of sand-gravel fans,most of these in deep layers are rich in oil and gas.However,the physical properties and oil-bearing potential varies largely in the sand-gravel body,therefore,it is important to carry out physical properties prediction and hydrocarbon detection in the area.Pre-stack simultaneous inversion utilizes prestack incident-angle stack data as well as P-wave,S-wave and density logging data,and can simultaneously invert many rock physical parameters associated with lithology and physical properties to comprehensively evaluate the reservoirs.In the prediction of the physical properties and oil-gas potential of sand-gravel body with the first class of AVO response in the deep layers of northern Dongying Sag,we use prestack simultaneous inversion technique to accurately predict the depth and plane distribution of effective reservoirs.The technique provides us a reliable basis for the development of sand-gravel body reservoirs.
Abundant sand-gravel body is developed in the north of the steep-slope zone of Dongying Sag,which displays strong top reflection and disordered internal reflection on the seismic sections.Because of the hydrocarbon sealing ability in the root of sand-gravel fans,most of these in deep layers are rich in oil and gas.However,the physical properties and oil-bearing potential varies largely in the sand-gravel body,therefore,it is important to carry out physical properties prediction and hydrocarbon detection in the area.Pre-stack simultaneous inversion utilizes prestack incident-angle stack data as well as P-wave,S-wave and density logging data,and can simultaneously invert many rock physical parameters associated with lithology and physical properties to comprehensively evaluate the reservoirs.In the prediction of the physical properties and oil-gas potential of sand-gravel body with the first class of AVO response in the deep layers of northern Dongying Sag,we use prestack simultaneous inversion technique to accurately predict the depth and plane distribution of effective reservoirs.The technique provides us a reliable basis for the development of sand-gravel body reservoirs.
引文
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[15]孟玮,钟建华,李勇,等.东营凹陷北部陡坡带砂砾岩体分布规律[J].特种油气藏,2009,16(5):17-20Meng W,Zhong J h,Li Y,et al.Analysis of glutenitedistribution regularity in north Dongying Depression[J].Special Oil and Gas Reservoirs,2009,16(5):17-20
[2]李艳玲.AVO叠前反演技术研究[J].大庆石油地质与开发,2006,25(5):103-105Li Y L.Research of AVO pre-stack inversion tech-niques[J].Petroleum Geology&Oilfield Develop-ment in DaQing,2006,25(5):103-105
[3]姚云霞,刘江.利用叠前反演进行薄储层描述[J].中国科技博览,2011(34):549-550Yao Y X,Liu J.Pre-stack join-inversion technique inprediction of thin reserviors[J].China Science andTechnology Review,2011(34):549-550
[4]颜学梅,张哨楠,苏锦义.AVO叠前反演在中等阻抗储层预测中的应用[J].物探化探计算技术,2012,34(1):51-57Yan X M,Zhang S N,Su J Y.The application ofAVO pre-stack inversion in prediction of mediumimpedance reservoir[J].Computing Techniques forGeophysical and Geochemical Exploration,2012,34(1):51-57
[5]郭旭升,凡睿.AVO技术在普光气田鲕滩储层预测中的应用[J].石油与天然气地质,2007,28(2):198-201Guo X S,Fan R.The application of AVO techniquesin the reservior prediction of Oolitic shoal of Pu-guang Gas Field[J].Petroleum and Natural Gas Ge-ology,2007,28(2):198-201
[6]周英.AVO技术在东海西湖凹陷油气预测中的应用[J].石油物探,2004,43(2):94-97Zhou Y.The application of AVO techniques in theoil and gas prediction of east china sea west lake de-pression[J].Geophysical Prospecting for Petroleum,2004,43(2):94-97
[7]范兴燕,郑俊茂.叠前反演技术在利比亚K&k区块油气检测中的应用[J].石油天然气学报(江汉石油学院报),2011,33(2):74-77Fan X Y,Zheng J M.The application of pre-stackinversion in K&k area of Libya[J].Journal of Oiland Gas Technology,2011,33(2):74-77
[8]罗运先,赵宪生,郭大江.AVO技术在辽河盆地东部地区的应用[J].大庆石油地质与开发,2006,25(4):100-102Luo Y X,Zhao X S,Guo D J.The application ofAVO techniques in the eastern area of Liaohe Basin[J].Petroleum Geology&Oilfield Development inDaQing,2006,25(4):100-102
[9]苑闻京.叠前反演和地震吸收技术在复杂天然气藏地震预测中的应用[J].地球物理学进展,2012,27(3):1107-1115Yuan W J.The application of pre-stack inversion andseismic absorption techniques in complex gas reser-voir seismic prediction[J].Progress in Geophysics,2012,27(3):1107-1115
[10]王霞,张延庆,于志龙,等.叠前反演结合地质统计模拟预测薄储层[J].石油地球物理勘探,2011,46(5):744-748Wang X,Zhang Y Q,Yu Z L,et al.Prestack inver-sion in combination with geological statistical simu-lation techiniques in the prediction of thin reservoirs[J].Oil Geophysical Prospecting,2011,46(5):744-748
[11]欧阳明华,熊艳,王玉雪.广安地区须四段气藏叠前地震反演研究[J].钻采工艺,2010,33(S1):79-82Ouyang M H,Xiong Y,Wang Y X.The research ofseismic pre-stack inversion in Xujiahe fourth layergas reservoirs in Guang'an area[J].Drilling&Prodution Technology,2010,33(S1):79-82
[12]唐晓花,成德安,吕金龙.叠前同步反演在徐家围子断陷火山岩气藏预测中的应用[J].石油物探,2009,48(3):285-289Tang X H,Cheng D A,Lv J L.Application of pre-stack simultaneous inversion for predicting volcanicsgas reservoirs in Xujiaweizi fault depression[J].Ge-ophysical Prospecting for Petroleum,2009,48(3):285-289
[13]郎晓玲,彭仕宓,康洪全,等.叠前同时反演方法在流体识别中的应用[J].石油物探,2010,49(2):164-169Lang X L,Peng S M,Kang H Q,et al.Applicationof prestack simultaneous inversion in fluid identifica-tion[J].Geophysical Prospecting for Peiroleum,2010,49(2):164-169
[14]强敏,周义军,钟艳,等.基于部分叠加数据的叠前同时反演技术的应用[J].石油地球物理勘探,2010,45(6):895-898Qiang M,Zhou Y J,Zhong Y,et al.Application ofpre-stack simultaneous inversion based on partialstack data[J].Oil Geophysical Prospecting,2010,45(6):895-898
[15]孟玮,钟建华,李勇,等.东营凹陷北部陡坡带砂砾岩体分布规律[J].特种油气藏,2009,16(5):17-20Meng W,Zhong J h,Li Y,et al.Analysis of glutenitedistribution regularity in north Dongying Depression[J].Special Oil and Gas Reservoirs,2009,16(5):17-20
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