摘要
陆东凹陷后河地区石油地质条件优越,勘探潜力大,是辽河油田2021年探明储量上报和产能建设的重点区块.受地震资料分辨率的限制,微幅构造、小断层不落实,薄储层展布特征准确刻画难,水平井钻遇率低,制约开发效率.为弥补地面地震资料分辨率低、单井Walkaway VSP资料成像范围小的不足和充分发挥地面地震资料连续性好、Walkaway VSP资料分辨率高的优势,开展了多井Walkaway VSP资料采集、井控处理和综合地质研究.以提高后河地区地震资料分辨率,支撑区块储量上报为目标,规模实施了3井零井源距VSP、6井7条Walkaway VSP测线资料采集和100 km^(2)的老资料井控处理、联合解释.应用结果表明,多井Walkaway VSP资料采集和井控资料处理、解释,增加了研究区井中地震资料的覆盖范围,提高了井中地震资料对地面地震资料处理和解释的约束,实现了地震资料品质整体提高.本文研究对成熟老区增储挖潜具有重要借鉴意义.
The Houhe area of Ludong sag in Liaohe Oilfield has better petroleum geological conditions and greater exploration potential.This area is a key block for proved reserve reporting and capacity construction of Liaohe Oilfield in 2021.Limited by the resolution of seismic data,micro amplitude structures and small faults are not implemented,it is difficult to accurately describe the distribution characteristics of thin reservoirs,and the drilling encounter rate of horizontal wells is low,which restricts the development efficiency.In order to make up for the shortcomings of low resolution of surface seismic data and small imaging range of single-well Walkaway VSP data,and give full play to the advantages of good continuity of surface seismic data and high resolution of Walkaway VSP data,multi-well Walkaway VSP data acquisition,well control processing and comprehensive geological research have been carried out.In order to improve the resolution and support the reporting of block reserves,the data acquisition of three wells with zero offset VSP,six wells with seven Walkaway VSP survey lines,and well control processing and joint interpretation of 100 km^(2)old data have been implemented in Houhe area.The application results show that the multi-well Walkaway VSP data acquisition and well control data processing and interpretation have increased the coverage of borehole seismic data in the study area,improved the constraint of borehole seismic data on surface seismic data processing and interpretation,and realized the overall improvement of seismic data quality.The study has important guiding significance for increasing storage and tapping potential in mature old oilfields.
作者
赵超峰
张伟
张铁强
王海波
田建涛
任丽莹
王洁
ZHAO ChaoFeng;ZHANG Wei;ZHANG TieQiang;WANG HaiBo;TIAN JianTao;REN LiYing;WANG Jie(Liaohe Geophysical Exploration Company,BGP Inc.,CNPC,Panjin 124010,China;College of Earth Science,Northeast Petroleum University,Daqing 163318,China;Geophysical Research and Development Center,BGP Inc.,CNPC,Zhuozhou 072751,China;Panzhihua University,Panzhihua 617000,China;Research Institute,BGP Inc.,CNPC,Zhuozhou 072751,China)
出处
《地球物理学进展》
CSCD
北大核心
2023年第5期2209-2218,共10页
Progress in Geophysics
基金
中国石油天然气股份有限公司科学研究与技术开发项目“干热岩资源勘探开发关键技术研究”(2022DJ5503)资助。
