物探化探计算技术2023，Vol.45Issue(6)：717-725,9.DOI:10.3969/j.issn.1001-1749.2023.06.04
塔里木盆地沙漠区超深层碳酸盐岩地震资料精细处理技术
Application of high-precision seismic processing technology for ultra-deep carbonate reservoir in the great desert area,Tarim basin,NW China
赵锐锐 1周强 2彭更新 1胡晓亚 2孙海军 1陈立 2李忠 2王珑 2王玉华2
作者信息
- 1. 中国石油 塔里木油田分公司勘探开发研究院,库尔勒 841000
- 2. 东方地球物理公司 物探技术研究中心,成都 610213
- 折叠
摘要
Abstract
The ultra-deep marine carbonate formation of The Great Desert,Tarim Basin Area,NW China,hosting great potential reservoirs,is a prospective target for petroleum exploration.However,there are several challenges remain in ultra-deep desert seismic data processing:①Loose structures of near-surface in desert regions can bring severe seismic energy ab-sorption,showing distinct low-frequency characteristics,which will eventually affect the reconstruction of signals;②The differences between interlayer multiple wave and primary wave in travel time and velocity are relatively small in desert area.Therefore,it is much more challenging to identify and suppress interlayer multiple waves;③The relatively low-resolution seismic data in ultra-deep area(depth>7500 m)due to energy absorption and wavelet deformation cannot meet the require-ment of high-precision imaging;④The drastically varying velocity medium under the influence of lithology,primarily consis-ted of Permian igneous rocks and Calcareous limestone,causes excellent difficulties in velocity model building.We attempt to a-chieve high-precision exploration progress in Tarim basin:①We use microlog data to constrain the near-surface model build-ing;②The multiple suppression technology we are applying this paper can provide more accurate pre-stack data;③We adopt near-surface Q filtering and migration for high-frequency compensation to improve the seismic resolution;④We build the in-itial velocity model based on VSP data,update the initial velocity model with tomography,finally obtain high-precision ima-ging of ultra-deep carbonate.关键词
沙漠/超深层碳酸盐/Q补偿/多次波压制/建模/地震资料处理Key words
desert/ultra-deepcarbonate/Q filtering/multiple suppression/velocity model building/seismic data processing分类
地质学引用本文复制引用
赵锐锐,周强,彭更新,胡晓亚,孙海军,陈立,李忠,王珑,王玉华..塔里木盆地沙漠区超深层碳酸盐岩地震资料精细处理技术[J].物探化探计算技术,2023,45(6):717-725,9.
