【摘要】：渤海海域B構(gòu)造古近系廣泛發(fā)育火山巖,分布廣、厚度大的致密火山巖占據(jù)了有效的儲(chǔ)集空間,降低了海上鉆井效率,影響了井位方案的部署,有必要開(kāi)展快速高效的火山巖定量刻畫研究.研究區(qū)主要發(fā)育溢流相火山巖,根據(jù)溢流相火山巖表現(xiàn)出的特殊的地震反射特征定量刻畫.溢流相火山巖地震相表現(xiàn)為強(qiáng)振幅、強(qiáng)連續(xù),巖石物理特性表現(xiàn)為高速度、高密度,通過(guò)建立振幅類屬性和已鉆井信息之間的關(guān)系式定量刻畫其展布特征,經(jīng)驗(yàn)證該方法具有良好的應(yīng)用效果.基于溢流相火山巖的定量研究,取得認(rèn)識(shí):研究區(qū)火山活動(dòng)始于沙河街組中期,呈"點(diǎn)狀"分布,東營(yíng)組中后期活動(dòng)性增強(qiáng),多為連片分布特征.
[Abstract]:Volcanic rocks are widely developed in Paleogene of structure B in Bohai Sea area. Dense volcanic rocks with wide distribution and large thickness occupy effective reservoir space, reduce offshore drilling efficiency, and affect the deployment of well location schemes. It is necessary to carry out rapid and efficient quantitative characterization of volcanic rocks. The overflow volcanic rocks are mainly developed in the study area. According to the special seismic reflection characteristics of the spillway volcanic rocks, the characteristics of seismic reflection are quantitatively described. The seismic facies of overflow volcanic rocks show strong amplitude and strong continuity, and the physical characteristics of rocks are high velocity and high density. By establishing the relationship between amplitude properties and drilling information, the distribution characteristics of volcanic rocks are quantitatively described. It has been proved that this method has good application effect. Based on the quantitative study of the overflow volcanic rocks, it is recognized that the volcanic activities in the study area began in the middle stage of Shahejie formation with a "dot" distribution, and the activity of the Dongying formation increased in the middle and late stages, mostly with the characteristics of continuous distribution.
【作者單位】： 中海石油(中國(guó))有限公司天津分公司渤海石油研究院;
【基金】：國(guó)家科技重大專項(xiàng)“大型油氣田及煤層氣開(kāi)發(fā)”(2011ZX05023-002)資助
【分類號(hào)】：P618.13;P631.4

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本文編號(hào)：2273197