物探与化探2023，Vol.47Issue(6)：1456-1466,11.DOI:10.11720/wtyht.2023.0006
东方1-1构造底辟模糊区OBN资料关键处理技术及应用
Critical processing techniques for ocean bottom node data of the diapir fuzzy zone of the Dongfang 1-1 structure and their application
摘要
Abstract
The Dongfang 1-1 structure is situated in the northern part of the central mud diapir tectonic belt of the Yinggehai Basin on the northern continental shelf of the South China Sea.The Dongfang 1-1 gas field is the first uncompartmentalized shallow gas field dis-covered in the Yinggehai Basin.Despite abundant oil and gas reserves in this region,the imaging of the diapir fuzzy zone has been a critical factor restricting oil and gas exploration in this region.The original streamer-based seismic data,through multiple rounds of multi-company reprocessing,still failed to effectively image the diapir fuzzy zone.Therefore,the second acquisition of three-dimensional ocean bottom node(OBN)seismic data was conducted in this region.According to the geological conditions and the characteristics of OBN data in this region,this study proposed several critical processing techniques,including OBN preprocessing,multi-component joint shear-wave noise suppression,wavelet-domain dual-sensor summation,and full-waveform-inversion(FWI)high-precision velocity model-ing.These techniques effectively improved the imaging of shallow fault structures and middle and deep diapir fuzzy zones,thus providing reliable fundamental data for the subsequent target evaluation.关键词
东方1-1构造/底辟模糊区/OBN地震资料/双检合并/FWI高精度速度建模Key words
Dongfang 1-1 structure/diapir fuzzy zone/OBN seismic data/dual-sensor summation/FWI high-precision velocity modeling分类
天文与地球科学引用本文复制引用
张敏,邓盾,李三福,史文英,张兴岩,支玲..东方1-1构造底辟模糊区OBN资料关键处理技术及应用[J].物探与化探,2023,47(6):1456-1466,11.基金项目
中国海洋石油集团有限公司科技项目(CCL2020HNF0043B01) （CCL2020HNF0043B01）
