地面地震处理技术在提升VSP储层预测能力中的应用  

Application of Surface Seismic Processing Technology to Improving Ability on VSP Reservoir Prediction

作　　者：鲍鲲 Bao Kun(Exploration and Development Research Institute of Daqing Oilfield Co.,Ltd.,Daqing Heilongjiang 163712)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《中外能源》2021年第3期38-41,共4页Sino-Global Energy

摘　　要：为详细了解松辽盆地北部L油田已开发区块内萨尔图至高台子油层内砂体、夹层和油水的分布情况,部署了L1井WalkawayVSP采集,利用Geoeast平台中VSP包处理后的成果剖面井筒位置成像较差、垂向分辨率低,波组特征与地面地震差异较大,无法满足精细油藏描述的地质需求。本文编译了VSP资料与地面地震处理系统和解释系统的数据转换接口,主要采用Omega处理系统,利用异常振幅衰减技术、分域随机噪音压制技术、地表一致性振幅补偿技术和含稳定性控制时变反Q滤波技术解决了上述问题。经评价分析认为新成果对井合成记录标定匹配程度高,垂向分辨率提升,波阻关系清晰,可以满足精细油藏描述的地质需求。该方法通过数据转换接口,将地面地震的处理技术应用于VSP资料的处理,可提升VSP资料精细油藏描述能力和储层预测能力。In order to know the sand body,interlayer and oil-water distribution in Saertu to Gaotaizi reservoirs of developed blocks in Oilfield L of northern Songliao Basin,Walkaway VSP acquisition is deployed for Well L1,the profile processed by VSP package on Geoeast platform can′t meet the geological demand of fine reservoir description for poor imaging at wellbore,low vertical resolution and much difference between wave group characteristic and surface seismic result.In this paper,the data conversion interface between VSP data and surface seismic processing system or interpretation system is compiled.The OMEGA processing system is mainly used to solve the above problems by abnormal amplitude attenuation technology,subdomain random noise suppression technology,surface consistent amplitude compensation technology and time-varying inverse Q filtering technology with stability control.Evaluation and analysis present that the new method can meet the geological requirements of fine reservoir description for its high matching degree with well synthesis records calibration,improved vertical resolution and clear wave-resistance relationship.Through the data conversion in-terface,the surface seismic processing technology is applied to the VSP data processing in this method,which can improve the ability of the VSP data on fine reservoir description and reservoir prediction.

关 键 词：VSP 油藏描述 储层预测 数据转换 地面地震 处理技术 

分 类 号：P631.4[天文地球—地质矿产勘探] P618.13[天文地球—地质学]