摘要：Traditional 1-D instantaneous phase (IP) is a routine attribute for detecting structural discontinuities of seismic images. The phase attribute has the ability to detect subtle changes, but it is meanwhile sensitive to noise. Furthermore, the traditional IP attribute is calculated trace by trace and thus cannot effectively utilize geological constraints. The sensitivity of noise and unavailability of geological constraints limit the practical applications of IP attributes. To address these two issues, this letter proposes a 3-D geosteering phase attribute derived from IP. At first, we implement the local stack on IP traces along both the time direction and the trajectory direction of the events to construct new stacked phase traces. Then, we compute the covariance of neighboring stacked phase traces along different spatial directions and extract the directional phase information from the resulting complex-valued covariance. Finally, we derive the so-called geosteering phase attributes by taking the maximal value among the extracted directional phases to approximately characterize the discontinuity measurement perpendicular to the structural trend in a 3-D curved plane. The examples including 3-D synthetic, physical modeling, and real seismic images are adopted to demonstrate the effectiveness of the proposed geosteering phase attributes. The results illustrate that the new geosteering phase attributes can be used as an effective and robust tool for the automatic detection of faults, channels, and even large-scale fracture groups.

关键字：Geology instantaneous phase (IP) phase seismic data interpretation seismic image

ISSN号：1545-598X

卷、期、页：卷: 16 期: 1 页: 145-149

发表日期：2019-01-01

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：IEEE GEOSCIENCE AND REMOTE SENSING LETTERS

通讯作者：苏宇昕,王铁一,王静涵

第一作者：袁三一,王尚旭

论文类型：期刊论文

论文概要：袁三一,苏宇昕,王铁一,王静涵,王尚旭，Geosteering Phase Attributes: A New Detector for the Discontinuities of Seismic Images，IEEE GEOSCIENCE AND REMOTE SENSING LETTERS，2019，卷: 16 期: 1 页: 145-149

论文题目：Geosteering Phase Attributes: A New Detector for the Discontinuities of Seismic Images