Publications blog

Image
2024 Direct Inversion Conferences Anisotropy

Direct Probabilistic Inversion: Adding back Geology into Geophysics through Probabilistic Inversion extended to accommodate Anisotropy in Quantitative Interpretation

Direct Probabilistic Inversion: ...
Image
2024 Direct Inversion Conferences Anisotropy

Anisotropic priors for probabilistic AVA inversion

Anisotropic priors for probabili...
Image
2024 Direct Inversion Conferences

Rock Type Prediction in Mineralized Geology Using a One Step Probabilistic Inversion

Rock Type Prediction in Minerali...
Image
2024 Direct Inversion Conferences

Implications of Probabilistic Inversion Results for Integrated Trap & HC-Fill Analysis – A Norwegian Sea case

Implications of Probabilistic In...
Image
2024 Direct Inversion Conferences

Cygnus Field Late Life Seismic Rejuvenation & Quantitative Reservoir Characterisation

Cygnus Field Late Life Seismic R...
Image
2023 4D Sim2Seis2Sim Conferences

4D joint inversion and “close-the-loop” for production history matching and forecasting

4D joint inversion and “close-th...
Image
2023 Direct Inversion

Direct Probabilistic Inversion with Non-Stationary Rock Physics Depth Trends – a North Sea Demonstration

Direct Probabilistic Inversion w...
Image
4D Conferences 2023 Rock Physics Rock physics inversion

Fluid Characterization using 4D Simultaneous AVO and Rock Physics Inversion

Fluid Characterization using 4D ...
Image
2022 Rock Physics

Thermal maturity driven elastic rock-physics model for Goldwyer formation, Canning Basin

Thermal maturity driven elastic ...
Image
2022 Rock Physics

Triaxial Deformation of the Goldwyer Gas Shale at In Situ Stress Conditions

Triaxial Deformation of the Gold...
Image
2022 Rock Physics

Viscoelastic stress relaxation for estimating Shmin magnitude in deep sedimentary formations

Viscoelastic stress relaxation f...
Image
2022 AVO Inversion Geoconvention

The Use and Abuse of AVO: Value, Analysis, Errors and Pitfalls

The Use and Abuse of AVO: Value,...
Image
2022 AVO Inversion Geoconvention

Merge of two seismic AVO inversions: Montney example

Merge of two seismic AVO inversi...
Image
2022 UHRS AVO Inversion Greentech

AVO inversion and processing of ultra-high resolution seismic for a windfarm application

AVO inversion and processing of ...
Image
2022 Direct Inversion Chalk

Characterizing a Wedged Chalk Prospect in the Danish Central Graben Using Direct Probabilistic Inversion

Characterizing a Wedged Chalk Pr...
Image
2021 Webinar AVO Inversion Rock physics inversion

Managing the onshore seismic challenge using inversion

Managing the onshore seismic cha...
Image
Conferences Direct Inversion 2021

Depth Trends in Facies Classification using Direct Probabilistic Inversion

Depth Trends in Facies Classific...
Image
Conferences 2020 Beyond Elastic Direct Inversion

Inversion of Thin-Bedded Multi-Lithology Settings

Inversion of Thin-Bedded Multi-L...
Image
Conferences 2020 4D Rock Physics

Rock physics incorporating both fluid changes and pressure depletion

Rock physics incorporating both ...
Image
Conferences 2020 Direct Inversion Beyond Elastic Uncertainty estimation

Direct probabilistic inversion for facies using the Zoeppritz reflectivity model

Direct probabilistic inversion f...
Image
Conferences 2020 Direct Inversion Beyond Elastic

Facies classification and surface interpretation using direct probabilistic inversion of AVO data

Facies classification and surfac...
Image
Conferences 2020 Rock physics inversion Beyond Elastic

Rock physics inversion for horizontal well placement in southern Alberta

Rock physics inversion for horiz...
Image
Conferences 2020 Direct Inversion

Direct probabilistic inversion of seismic AVO data for reservoir characterization

Direct probabilistic inversion o...
Image
Conferences 2020 Rock physics inversion

How rock physics inversion helps with horizontal oil well placement in Southern Alberta

How rock physics inversion helps...
Image
Conferences 2020 Beyond Elastic Direct Inversion

Combined stratal geometry and seismic inversion characterisation of sand distribution, Cambo

Combined stratal geometry and se...
Image
Conferences 2020 Direct Inversion Beyond Elastic

Seismic inversion of dual azimuth broadband seismic data

Seismic inversion of dual azimut...
Image
Conferences 2020

Subsurface characterization parameterized in terms familiar to geoscientists

Subsurface characterization para...
Image
Conferences 2019 Direct Inversion

Reservoir characterisation in the presence of thin beds and elastically ambiguous facies.

Reservoir characterisation in th...
Image
Conferences 2019 Direct Inversion

Exploring Noise Models in Approximate Bayesian Inversion for Facies

Exploring Noise Models in Approx...
Image
Conferences 2019 AVO inversion

Seismic AVO Inversion for Geothermal Reservoir Characterisation

Seismic AVO Inversion for Geothe...
Image
Conferences 2019 Direct Inversion

Reservoir characterisation in the presence of thin beds and elastically ambiguous facies

Reservoir characterisation in th...
Image
Conferences 2019 Direct Inversion

Reservoir characterisation by direct probabilistic inversion

Reservoir characterisation by di...
Image
Conferences 2019 PP&PS

Reservoir Characterisation with Ocean Bottom Seismic

Reservoir Characterisation with ...
Image
2018 Direct Inversion Conferences

Local Probabilistic Inversion of seismic AVO data

Local Probabilistic Inversion of...
Image
2018 Conferences Rock physics

A Rock Physics Feasibility Study of the Geothermal Gassum Reservoir, Copenhagen Area, Denmark

A Rock Physics Feasibility Study...
Image
4D 2018 Conferences Rock physics inversion AVO inversion

Integrated 4D quantitative interpretation for assisted reservoir model updating

Integrated 4D quantitative inter...
Image
2018 Rock physics inversion AVO inversion Beyond elastic 2015

Chasing Not-so-Bright spots in the Lithic Glauc: Reservoir Sands or shale?

Chasing Not-so-Bright spots in t...
Image
AVAZ inversion 2017 Unconventional resources Journals Anisotropy

Azimuthal AVO inversion of an elliptic orthorhombic medium

Azimuthal AVO inversion of an el...
Image
4D 2017 Rock physics inversion Rock physics Production monitoring Unconventional resources Conferences Beyond elastic

Time-lapse rock physics inversion of thermal heavy oil production

Time-lapse rock physics inversio...
Image
2017 Rock physics Rock physics inversion Beyond elastic AVO inversion Carbonates Conferences

The seismic story of the Guhlen discovery

The seismic story of the Guhlen ...
Image
2017 4D Production monitoring Rock physics inversion Rock physics Journals Beyond elastic

The value of 4D seismic

The value of 4D seismic
Image
2017 4D Production monitoring Rock physics inversion Rock physics Journals Beyond elastic

4D seismic close-the-loop impacts business decisions

4D seismic close-the-loop impact...
Image
2017 PP&PS Rock physics inversion Production monitoring Chalk Conferences 4D

Ocean bottom seismic inspires major structural update

Ocean bottom seismic inspires ma...
Image
2016 Exploration Rock physics inversion Rock physics AVO inversion Journals

AVO inversion in exploration

AVO inversion of prestack seismic data, constrained by geologic knowledge and rock-physics modeling, is an essential technology that can greatly reduce interpretation risk during exploration.
AVO inversion in exploration
Image
2016 Rock physics AVO inversion Exploration Lectures

EAGE E-Lecture 2016

Seismic Screening for Hydrocarbon Prospects Using Rock-Physics Attributes
EAGE E-Lecture 2016
Image
2016 Rock physics inversion Unconventional resources Rock physics Beyond elastic AVO inversion Conferences

Estimating Biot-Willis coefficient

The Biot-Willis coefficient is a key component associated with the effective stress field, where it represents the proportion of fluid pressure that counteracts the confining stress.
Estimating Biot-Willis coefficie...
Image
2016 4D Rock physics inversion Rock physics AVO inversion Production monitoring Journals Beyond elastic

Prestack 3D and 4D seismic inversion

We present a successful case study in which prestack 3D and 4D simultaneous AVO inversion is used in conjunction with rock-physics analysis
Prestack 3D and 4D seismic inver...
Image
2015 Anisotropy Unconventional resources AVAZ inversion Conferences Beyond elastic

Estimating of fast and slow shear waves

Estimation of fast and slow shear wave velocities from P-wave data: A Montney case study
Estimating of fast and slow shea...
Image
2015 Exploration Rock physics inversion Conferences Beyond elastic

Exploring the Mannville Group

New insights on an old reservoir
Exploring the Mannville Group
Image
2015 Exploration Well tie Wavelet estimation Conferences

Mis-ties beneath the Mannville coals

Exploring the Glauconitic Sandstone, Ostracod Beds and Ellerslie Member in the Manville group, a major exploration target in Western Canada.
Mis-ties beneath the Mannville c...
Image
2015 4D Production monitoring Rock physics Rock physics inversion Heavy oil Conferences Beyond elastic

The Nexen time-lapse project

An Industry Leading Approach to Reservoir Monitoring and Recovery
The Nexen time-lapse project
Image
Rock physics inversion Risk management Uncertainty estimation AVO inversion Conferences 2015 Beyond elastic Injectites

Uncertainty estimates on prestack inversion

A Central North Sea Sandstone Injectite Field
Uncertainty estimates on prestac...
Image
2014 Rock physics inversion 4D Production monitoring Rock physics Conferences

Understanding depositional architecture in deepwater clastic reservoirs

Rock Physics Inversion in the Okume field, Equatorial Guinea
Understanding depositional archi...
Image
2014 Rock physics AVO inversion Exploration Lectures

EAGE E-lecture 2014

In this presentation, Per Avseth (Norwegian University of Science and Technology) compares extended elastic impedance trends at different chi angles, with rock physics template models.
EAGE E-lecture 2014
Image
2014 Well tie Wavelet estimation Journals

Seismic well tie theory

In this study, we investigate the idea of using a Backus averaged well log that accounts for dispersion resulting from layer induced long wave elastic attenuation to compute a time-depth relationship.
Seismic well tie theory
Image
2014 4D Production monitoring Rock physics inversion Rock physics Conferences Beyond elastic

Integrating 3D & 4D rock physics inversion data

A Better Understanding of Field and Reservoir Behavior to Mitigate Production Decline
Integrating 3D & 4D rock physics...
Image
2014 Rock physics Unconventional resources Conferences

Rock quality assessment for hydraulic fracturing

In this paper, we discuss failure criteria and rock physics models in the brittleness definition.
Rock quality assessment for hydr...
Image
2014 4D Production monitoring Rock physics inversion Rock physics Chalk Conferences Beyond elastic

Time-lapse seismic reservoir characterization

A Reservoir Model Update of a Mature Chalk Field - The South Arne Ca
Time-lapse seismic reservoir cha...
Image
Rock physics AVO inversion 2013 Conferences

Pseudo-elastic impedance calibrated to rock physics models

Efficient Lithology and Fluid Mapping from AVO Data
Pseudo-elastic impedance calibra...
Image
2012 Injectites AVO inversion Conferences

Injected nature of a paleocene sand system

Injected nature of a paleocene s...