松辽盆地北部胡吉吐莫北地区萨尔图油层河道砂体地震识别方法  

Seismic recognizing method of the channel sandbodies in Saertu oil reservoir in Hujitumobei area of North Songliao Basin

作　　者：姜传金[1] 扈玖战[1] JIANG Chuanjin;HU Jiuzhan(Exploration and Development Research Institute of Daqing Oilfield Co Ltd,Daqing 163712,China)

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：《大庆石油地质与开发》2020年第2期120-124,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司重大科技专项“松辽盆地北部石油精细勘探技术完善与规模增储”(2016E-0201)。

摘　　要：松辽盆地北部胡吉吐莫北地区萨尔图油层萨零油层组发育多期水下分流河道,多口井钻遇水下分流河道砂体均获得工业油流,证明萨零油层河道砂体具有较好的勘探潜力。针对该区地震资料品质差,不同期次河道砂体互相叠置,地震响应特征不清的难题,研究应用高分辨率谱反演提频技术,提高了地震资料品质和分辨率,应用不同砂体组合反射系数贡献率分析技术结合实际井的速度和密度信息开展正演分析,明确了不同期次河道砂体组合的地震响应特征,优选“甜心体”属性和振幅切片实现该区不同期次河道砂体的分期刻画,取得了较好的应用效果。Multi-stage underwater distributary channels are well-developed in S0 Oil Group of Hujitumobei area of North Songliao Basin,the sandbodies in the channels were drilled by many wells and the industrial oil flow was achieved for all the wells,these show that the sandbodies in the group channels possess much better exploration potentials.In the light of the poor-quality seismic data,inter-superimposition for different period-time channel sandbodies and not clear seismic response characteristics,the frequency enhancing technique of the high-resolution spectral inversion was studied and applied,thus the seismic data quality and resolution were improved,with the help of the analyzing technique of the reflection coefficient contribution rate for different sandbody combinations,and moreover combining with the velocity and density information,the forward model analysis was engaged,the seismic response characteristics of different period-time channel sandbodies were made clear,by means of optimizing the“sweet spot”attributes and the amplitude slices,the separate-period characterizations of these different period-time channel sandbodies were conducted,finally the much better applied effects were achieved.

关 键 词：松辽盆地 胡吉吐莫北 萨尔图油层 分流河道 谱反演 反射系数 

分 类 号：P631[天文地球—地质矿产勘探]