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塔河南托浦台地区泥盆系地震相与沉积相分析 被引量:2

Analysis on Seismic and Sedimentation of Devonian System of South Tuoputai Area in Tahe Oilfield
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摘要 根据地震反射波在时间剖面上的外部形态、内部结构、连续性、振幅、频率及速度等特征,对塔河南托浦台地区的地震资料进行了地震相解释,共解释出中振幅中连续前积地震相、中振幅中连续楔状地震相、杂乱低振幅低连续地震相、亚平行强振幅中-高连续席状地震相、强振幅高连续丘状地震相等5种主要的地震相类型。并根据地震相的特征结合工区内的构造背景和钻井资料等,在泥盆系划分出三角洲前缘亚相、滨海相和浅海相等。结合单井沉积相分析结果,对有利含油气相带进行划分和评价,认为西南部东河砂岩段的滨海相和浅海相沉积区和东南部的东河砂岩尖灭端的三角洲前缘河口湾沉积区为有利的储层展布相带,为扩大勘探领域、寻找有利目标提供了有益的建议。 In combination with the characteristics of seismic reflection events of configuration on the time section, its interval structure, continuity, oscillation amplitude, frequency and velocity, a seismic facies interpretation is carried out on the seismic data from the south Tuoputai of Tahe Oilfield. Five kinds of main seismic types of medium amplitude and medium continuity progradation facies, medium amplitude and medium continuity wedge facies, disorderly weak amplitude and weak continuity facies, sub-parallel and high amplitude medium-high continuity sheet facies, high amplitude high continuity hummocky facies are summed up. According to the characteristics of the seismic facies and in combination with structural background and drilling information are summed up. Devonian sedimentary facies is explained, the delta front, littoral facies and the neritic facies of the sedimentary facies are divided. According to the single well sedimentary facies analysis result,the north-west Donghe sandstone section littoral facies and the neritic facies deposition field and the southeast area of Donghe sandstone sharp surface end in delta front deposition are predicted as the advantageous reservoirs, by which a useful suggestion is put forward for expanding the exploration and finding beneficial target of exploration.
作者 龚丹 宁松华
出处 《石油天然气学报》 CAS CSCD 北大核心 2006年第6期73-76,共4页 Journal of Oil and Gas Technology
关键词 托浦台地区 泥盆系 地震相 沉积相 Tuoputai Area Devonian system seismic facies sedimentary facies
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