Barent Sea Sampling 2014 Reprocessed

Edited by Stéphane Polteau, Nina Lebedeva-Ivanova, Mikal Trulsvik, Sverre Planke

The main project aims are to evaluate the current seep database acquired in 2014 (BSS14) and develop a workflow for improved identification of hydrocarbon phase in seep data and ranking of exploration targets in undrilled areas.

The comprehensive BSS14R report includes a calibration study based on statistical analysis of seep data acquired near seven exploration wells during the BSS14 survey. The results of the calibration study were applied to the three areas in the Hoop and Barents SE areas. The results will be used to develop a workflow for ranking undrilled structures, and for improving the design of future seafloor sampling surveys.

 

Highlights
• Seep analysis method working - oil predicted in Gemini North (gas in Stø, oil in Snadd)
• Seep anomalies over Korpfjell suggested presence of hydrocarbons (gas in Stø and Kobbe)
• Confidence in extending the Wisting play by integrating seep data with P-Cable data
• Key parameter for de-risking charge for all steps of exploration programs
• Unique stratigraphic tie and source rock evaluation in Barents SE area

Database and deliverables
• Calibration study of 8 exploration wells in Hoop Area (35 sites)
• Reprocessed (post calibration) seepage analysis
• Hoop Area (3 profiles - 125 sites)
• Barents SE Area (7 profiles - 293 sites)
• Interpretation report and ArcGIS project
• Bathymetry and sub-bottom profiler data

Map showing Hoop Area and Barents SE Area sampling sites and 24rd round blocks.

 

 Map showing Hoop Area sampling sites and 24rd round blocks.

 

CONTENTS


Executive Summary

Introduction
• Background
• Geological Settings
• Aims
• Operations

Hydrocarbon Seepage
• Seepage Style and Signatures
• Seep Dynamics
• Ascent Mechanisms
• Evaluation of Microseep Methods

Operations
• Overview
•  M/V Koningin Juliana
•  Diary of Events and Production Levels

Explanatory Notes
• Authorship
• Survey Systems
• Coring System
• Wet Lab
• Microbial and Geochemical Seep Analysis
• Sampling Subcrop
• Biostratigraphy

Well Calibration Study
• AGI Repro
• MPOG Results
• Integration of AGI and MPOG Results
• Statistical Evaluation of Seep Results
• Wisting and Hanssen Discoveries
• Summary and Recommendations

BSS14R Results Hoop
• Individual Chapters for A1, A4, A5 Profiles
• Geophysics
• Seep Results
• Integrations
• Conclusions

BSS14R Results Barents SE
• Individual CXhapters for B4, B5, B6, B7, B8, B9, B10 Profiles
• Geophysics
• Seep Results
• Integrations
• Conclusions

Bibliography

Appendix A - Core Descriptions

Digital Data
• pdf version of report
• Seep results in ArcGIS project
• Reprocessed MBE and data