CAJ | 학술논문

陕北富县地区以前的地震勘探沿沟布设弯曲测线,平面展布呈不规则树枝状,难以形成闭合回路,很难对二维地震资料在平面上进行储层反演.2001年在陕北富县探区进行野外采集方法和地震处理技术攻关,通过采用极其灵活的可变线元观测系统实现直测线过塬,使测线成网连片;资料处理中采用基于模型反演的折射波静校正、地表一致性振幅补偿和反褶积、叠前噪音衰减等技术,为后续的储层预测、低幅度构造解释和综合地质研究提供了高保真的地震资料;由于测线的连片成网,通过伪测井的方法对无井测线进行控制,最终实现储层反演的连片解释.
협북부현지구이전적지진감탐연구포설만곡측선,평면전포정불규칙수지상,난이형성폐합회로,흔난대이유지진자료재평면상진행저층반연.2001년재협북부현탐구진행야외채집방법화지진처리기술공관,통과채용겁기령활적가변선원관측계통실현직측선과원,사측선성망련편;자료처리중채용기우모형반연적절사파정교정、지표일치성진폭보상화반습적、첩전조음쇠감등기술,위후속적저층예측、저폭도구조해석화종합지질연구제공료고보진적지진자료;유우측선적련편성망,통과위측정적방법대무정측선진행공제,최종실현저층반연적련편해석.
The crooked seismic lines along valleys were irregular previously in Fuxian of Shanbei,showing an irregular branch in plane, and hard to complete close grids. Therefore, it′s difficult to conduct reservoir inversion of 2D seismic data. In 2001, Zhongyuan Oilfield Company carried out the study on field acquisition methods and seismic processing technology in Fuxian. Straight lines were passing through plateaus and formed seismic grids by using flexible geometry with variable linear bins.Data processing involved model-inversion based refraction static correction, surface consistent amplitude compensation, deconvolution, and pre-stack noise attenuation. As the result, seismic data with a high fidelity was provided for the subsequent reservoir predictions, small-amplitude structure interpretation and integrative geologic study. Because all lines were jointed to form grids, comprehensive interpretation of reservoir inversion could be finally implemented by using the pseudo logging method to control lines without wells.