Enhanced onboard 4DQC and in-field Ultra Fast Track PreSDM 4D Volumes, case study 2022 Mariner monitor2

INTRODUCTION

Since the early days of 4D (time-lapse) monitoring (Greaves and Fulp, 1987), seismic data acquisitions often come with some uncertainty regarding whether they will successfully achieve their objectives.

The period between first shot and first image can be a nervous one for all involved in the project as they await confirmation that a useable 4D signal can be identified in the data. Improving 4DQC (Quality Control) in field and providing early visibility into data quality would be of great benefit for all with regards to informing line acceptance and building confidence in the final product.

Up to now, infield quality control performed on the vessel during the acquisition of 4D monitor seismic has been limited to statistical analysis of geometric repeatability and 3DQC of the acquired seismic data.

The innovative approach described here demonstrates the benefits of “real-time” 4D seismic data quality analysis and produces ultra-fast track 4D products in an unprecedented time frame for streamer 4D.