Multi-Client PVT
Field-wide EOS models.
Built together.
Built together.
Collaborative, multi-operator studies delivering robust EOS models for entire basins — built from 100s of lab-quality PVT samples and validated across black oils, condensates, and gas systems. Choose your basin, join the consortium, and save thousands of dollars with a ready-to-use EOS model you can trust.
Field-wide EOS models.
Built together.
Built together.
Collaborative, multi-operator studies delivering robust EOS models for entire basins — built from 100s of lab-quality PVT samples and validated across black oils, condensates, and gas systems. Choose your basin, join the consortium, and save thousands of dollars with a ready-to-use EOS model you can trust.
Why Field-Wide EOS Models?
A field-wide EOS model acts like a field-wide "PVT correlation" applicable for all fluids in a given basin (black oils | volatile oils | near-critical fluids | gas condensates | wet gases | dry gases). By pooling PVT samples and funding across operators, we build a model calibrated and tuned to the unique thermodynamics of each basin. The result? A consistent, ready-to-use fluid model that saves time, reduces uncertainty, and eliminates the need for costly lab work on your wells.
🔬 Data-Driven: 100+ PVT samples incorporated across studies
🤝 Collaborative: Built in partnership with leading operators
🧪 Validated: Tuned to lab data (CCE, CVD, DLE, separator tests)
💸 Cost-Efficient: Robust EOS for a fraction of the cost
🌍 Field-Wide Utility: One model for many formations and well types
🔄 Consistently predict PVT data: Saturation pressures, formation volume factors (FVF), solution GORs/CGRs, densities, compressibilities and viscosities across a field
🔬 Data-Driven: 100+ PVT samples incorporated across studies
🤝 Collaborative: Built in partnership with leading operators
🧪 Validated: Tuned to lab data (CCE, CVD, DLE, separator tests)
💸 Cost-Efficient: Robust EOS for a fraction of the cost
🌍 Field-Wide Utility: One model for many formations and well types
🔄 Consistently predict PVT data: Saturation pressures, formation volume factors (FVF), solution GORs/CGRs, densities, compressibilities and viscosities across a field
UNCONVENTIONAL FLUID SYSTEMS
Unconventional fluid systems demonstrate strong field-wide PVT consistency although the reservoir fluid (i.e. composition) varies significantly. Reservoir fluid differences are dominantly determined by thermal maturity, which is the main reason behind the consistent fluid characteristics over large areas. What this means in practice, is that we can use one fluid model (i.e. EOS model) for the entire field, but what changes from area-to-area/well-to-well is the GOR (i.e. composition). This has been one of the key findings in all our studies.
Anadarko Basin
The SCOOP/STACK/Merge multi-client project was first initiated in February 2019, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, 52 PVT samples from 43 different well locations were included in the EOS model development work. Of the 52 samples, 26 are bubble point samples and the other 26 samples are dew point. There is no dry gas sample in this study. The minimum C7+ component is 1.5 mol% and the maximum is 37.6 mol%. The production comes from Woodford, Springer, Meramec, Osage and Cunningham formation, with recombined GOR ranging from 700 to 54,000 scf/STB and API ranging from 38 to 61.
Participating Companies
New companies are joining the study every single year.
Experimental Overview
Table below summarizes PVT experiments performed on all samples.
Number of PVT Samples
In this study, 52 PVT samples from 43 different well locations were included in the EOS model development work. Of the 52 samples, 26 are bubble point samples and the other 26 samples are dew point. There is no dry gas sample in this study. The minimum C7+ component is 1.5 mol% and the maximum is 37.6 mol%. The production comes from Woodford, Springer, Meramec, Osage and Cunningham formation, with recombined GOR ranging from 700 to 54,000 scf/STB and API ranging from 38 to 61.
Participating Companies
New companies are joining the study every single year.
- 89 Energy (Casillas Petroleum)
- Camino Natural Resources
- Coterra Energy (Cimarex Energy)
- Continental Resources
- Devon Energy
- Marathon Oil
- Roan Resources
- Gulfport Energy
- Canvas Energy
- Maverick Natural Resources
Experimental Overview
Table below summarizes PVT experiments performed on all samples.
Experiments | # |
CCE | 52 |
CVD | 23 |
DLE | 16 |
Separator test | 7 |
Oil viscosity | 14 |
Single stage flash of Separator Oil | 30 |
Recombination with multiple GORs | 4 |
Bakken Basin
The Bakken multi-client project was first initiated in 2018, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, 74 samples from 46 different well locations were included in the EOS model development work. The production comes from Middle Bakken and Three Forks formation, with GOR ranging from 550 to 4500 scf/STB and API ranging from 37 to 46. The minimum mol percentage of C7+ is 12 mol% and the maximum is 47 mol%.
Participating Companies
New companies are joining the study every single year.
Table below summarizes PVT experiments performed on all samples. Note that only multi-stage separation tests performed on reservoir fluids are counted (*).
Number of PVT Samples
In this study, 74 samples from 46 different well locations were included in the EOS model development work. The production comes from Middle Bakken and Three Forks formation, with GOR ranging from 550 to 4500 scf/STB and API ranging from 37 to 46. The minimum mol percentage of C7+ is 12 mol% and the maximum is 47 mol%.
Participating Companies
New companies are joining the study every single year.
- Crescent Point Energy
- Devon
- Grayson Mill Energy (Equinor)
- Chevron (HESS)
- Marathon
- Chord Energy (Oasis Petroleum)
- Ovintiv
- Continental
- ConocoPhillips
- ExxonMobil
Table below summarizes PVT experiments performed on all samples. Note that only multi-stage separation tests performed on reservoir fluids are counted (*).
Experiments | # |
CCE | 69 |
CVD | 0 |
DLE | 48 |
Separator test | 34* |
Oil viscosity | 39 |
Swell test | 1 |
DJ Basin
The Denver-Julesburg (DJ) basin multi-client project was first initiated in 2023, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, PVT samples from 30 different well locations, spanning from separator to bottomhole fluid sampling, were utilizedin the EOS model development work. Of these 30 wells, 22 produce from the Niobrara formations (A, B and C), while the remaining 8 wells produce from the Codell formations. There are 28 samples classified as bubblepoint samples and 2 are dewpoints samples. The C7+ component in the samples varies significantly, ranging from 3 mol% to 43 mol%.
Participating Companies
The table above summarizes PVT experiments performed on all samples.
Number of PVT Samples
In this study, PVT samples from 30 different well locations, spanning from separator to bottomhole fluid sampling, were utilizedin the EOS model development work. Of these 30 wells, 22 produce from the Niobrara formations (A, B and C), while the remaining 8 wells produce from the Codell formations. There are 28 samples classified as bubblepoint samples and 2 are dewpoints samples. The C7+ component in the samples varies significantly, ranging from 3 mol% to 43 mol%.
Participating Companies
- Chevron
- Civitas
- Oxy
Experiments | # |
CCE | 40 |
CVD | 2 |
DLE | 27 |
Separator test | 12 |
Oil viscosity | 28 |
Duvernay Basin
The Duvernay multi-client project was first initiated in 2020, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, 28 samples from 28 different well locations were included in the EOS model development work. Of the 28 samples, 14 are bubblepoints and 14 are dewpoints samples. There is no dry gas sample in this study. The C7+ component is ranging from 1.4 mol% to 28 mol%.
Participating Companies
New companies are joining the study every single year.
Table below summarizes PVT experiments performed on all samples.
Number of PVT Samples
In this study, 28 samples from 28 different well locations were included in the EOS model development work. Of the 28 samples, 14 are bubblepoints and 14 are dewpoints samples. There is no dry gas sample in this study. The C7+ component is ranging from 1.4 mol% to 28 mol%.
Participating Companies
New companies are joining the study every single year.
- Crescent Point
- Whitecap
- Baytex
- Teine Energy
- Cygnet Energy
- Logan Energy
- Artis Exploration
- Public data
Table below summarizes PVT experiments performed on all samples.
Experiments | # |
CCE | 28 |
CVD | 17 |
DLE | 13 |
Separator test | 14 |
Oil viscosity | 15 |
Eagle Ford / Austin Chalk
The Eagle Ford/Austin Chalk multi-client project was first initiated in 2016, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, 97 PVT samples from 92 different well locations were included in the EOS model development work. Of the 97 samples, 83 are from the Eagle Ford, while 14 are from the Austin Chalk. The Eagle Ford and Austin Chalk samples are thermodynamically consistent, even though the compositions tend to vary, meaning that one EOS model is sufficient for both. In general, compositionally, Austin Chalk samples tend to be richer (lower GOR / higher CGR) then the Eagle Ford samples in the same area / pad. There are 28 considered as bubblepoints samples, 65 dewpoints and 4 dry gas samples. The C7+ component is ranging from 0 mol% to 45 mol%.
Participating Companies
New companies are joining the study every single year.
Table above summarize PVT experiments performed on all samples.
Number of PVT Samples
In this study, 97 PVT samples from 92 different well locations were included in the EOS model development work. Of the 97 samples, 83 are from the Eagle Ford, while 14 are from the Austin Chalk. The Eagle Ford and Austin Chalk samples are thermodynamically consistent, even though the compositions tend to vary, meaning that one EOS model is sufficient for both. In general, compositionally, Austin Chalk samples tend to be richer (lower GOR / higher CGR) then the Eagle Ford samples in the same area / pad. There are 28 considered as bubblepoints samples, 65 dewpoints and 4 dry gas samples. The C7+ component is ranging from 0 mol% to 45 mol%.
Participating Companies
New companies are joining the study every single year.
- Devon Energy
- EP Energy
- Lewis Petro
- Magnolia
- Marathon Oil Company
- Murphy Oil
- Ranger Oil
- Repsol
- SM Energy
- (Penn Virginia)
- (Lone Star)
- (Equinor)
Experiments | # |
CCE | 81 |
CVD | 49 |
DLE | 9 |
Separator test | 17 |
Oil viscosity | 17 |
Table above summarize PVT experiments performed on all samples.
Midland-Barnett Basin
The Midland-Barnett multi-client project was first initiated in 2025, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, PVT samples from 8 different well locations ranging from the separator to bottomhole fluid sampling were included in the EOS model development work.
Participating Companies
New companies are joining the study every single year.
Experimental Overview
The table above summarizes PVT experiments performed on all samples.
Number of PVT Samples
In this study, PVT samples from 8 different well locations ranging from the separator to bottomhole fluid sampling were included in the EOS model development work.
Participating Companies
New companies are joining the study every single year.
- SM Energy
- Ovintiv
- Black Swan O&G
- Continental Resources
- ExxonMobil
Experimental Overview
Experiments | # |
CCE | 8 |
CVD | 6 |
DLE | 2 |
Separator test | 2 |
Oil viscosity | 3 |
Montney Basin
The Montney multi-client project was first initiated in 2018, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, 69 samples from 52 different well locations were included in the EOS model development work. Of the 69 samples, 39 are bubblepoints and 30 are dewpoints samples. There is no dry gas sample in this study. The C7+ component is ranging from 1 mol% to 43 mol%.
Participating Companies
New companies are joining the study every single year.
Experimental Overview
Table above summarize PVT experiments performed on all samples.
Number of PVT Samples
In this study, 69 samples from 52 different well locations were included in the EOS model development work. Of the 69 samples, 39 are bubblepoints and 30 are dewpoints samples. There is no dry gas sample in this study. The C7+ component is ranging from 1 mol% to 43 mol%.
Participating Companies
New companies are joining the study every single year.
- Seven Generations Energy
- ConocoPhillips
- ARC Resources
- Paramount
- Birchcliff Energy
- Petronas
- Velvet
- Whitecap Resources
- Shell
- Kiwetinohk Energy
Experimental Overview
Experiments | # |
CCE | 69 |
CVD | 24 |
DLE | 26 |
Separator test | 32 |
Oil viscosity | 27 |
Permian - Midland
The Permian multi-client project was first initiated in 2019, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
In this study, 38 wells are included from the following participating companies:
In this study, 38 wells are included from the following participating companies:
- Blackstone (Guidon, Primexx, Jetta Permian)
- Black Swan
- ConocoPhillips (Concho)
- Crescent (Vital, Laredo)
- Diamondback
- Endeavor
- EP Energy
- ExxonMobil
- Hibernia Resources
- Ovintiv
- Oxy (Anadarko)
Permian - Delaware
The Permian multi-client project was first initiated in 2019, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
In this study, 95 wells are included from the following participating companies:
In this study, 95 wells are included from the following participating companies:
- Ameredev
- Blackstone
- BPX
- ConocoPhillips
- Continental
- Coterra (prev. Cimarex)
- Crescent (prev. Vital, Laredo)
- Devon
- Diamondback
- ExxonMobil
- Marathon Oil
- Matador Resources
- Maverick¹
- Oasis
- Oxy
- Paloma Resources
Powder River Basin
The Powder River multi-client project was first initiated in 2022, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, PVT samples from 21 different well locations ranging from the separator to bottomhole fluid sampling were included in the EOS model development work. The production comes from Mowry, Niobrara, Shannon, Frontier, Turner, and Dakota formations, with separator GOR ranging from 190 to 17,700 scf/sep. bbl and API ranging from 36 to 51.
Participating Companies
New companies are joining the study every single year.
Experimental Overview
The table above summarizes PVT experiments performed on all samples.
Number of PVT Samples
In this study, PVT samples from 21 different well locations ranging from the separator to bottomhole fluid sampling were included in the EOS model development work. The production comes from Mowry, Niobrara, Shannon, Frontier, Turner, and Dakota formations, with separator GOR ranging from 190 to 17,700 scf/sep. bbl and API ranging from 36 to 51.
Participating Companies
New companies are joining the study every single year.
- Camino Natural Resources
- Kimmeridge
- Anschutz
- Devon Energy
- Continental Resources
- Ballard Petroleum
- Rockies Resources
- Oxy
Experimental Overview
Experiments | # |
CCE | 21 |
CVD | 4 |
DLE | 17 |
Separator test | 12 |
Oil viscosity | 17 |
Uinta Basin
The Uinta multi-client project was first initiated in 2023, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
Number of PVT Samples
In this study, PVT samples from 11 different well locations ranging from the separator to bottomhole fluid sampling were included in the EOS model development work. The production comes from Castle Peak, Uteland Butte, Wasatch and Black Shale formations, with separator GOR ranging from 375 to 1,150 scf/sep. bbl and API ranging from 37 to 45.
Participating Companies
Experimental Overview
The table above summarizes PVT experiments performed on all samples.
Number of PVT Samples
In this study, PVT samples from 11 different well locations ranging from the separator to bottomhole fluid sampling were included in the EOS model development work. The production comes from Castle Peak, Uteland Butte, Wasatch and Black Shale formations, with separator GOR ranging from 375 to 1,150 scf/sep. bbl and API ranging from 37 to 45.
Participating Companies
- Ovintiv
- Javelin
- Finley Resources / Uinta Wax
- Huntington
- Crescent
- SM Energy
Experimental Overview
Experiments | # |
CCE | 12 |
Swelling test | 1 |
DLE | 11 |
Separator test | 7 |
Oil viscosity | 13 |
Utica
The Utica multi-client project was first initiated in 2024, and has continued to grow as more data has been incorporated — resulting in a progressively more robust thermodynamic description.
In this study, 24 wells are included from the following participating companies:
In this study, 24 wells are included from the following participating companies:
- Expand
- Gulfport
Want to know more? Send an e-mail to sales@whitson.com and we'll be happy to talk you through our multi-client EOS studies or work with you on a single client solutions
Seamless EOS integration into whitson+
All multi-client EOS models can be directly imported into whitson+ — allowing your team to apply field-wide fluid models instantly across workflows, from forecasting to simulation.
- Web-based softwareNo IT involvement required, instantly access when needed
- One-click importFull compatibility with forecasting, RTA, and fluid diagnostics workflows in whitson+
- Version control of modelsTrack changes and updates
- Share, collaborate, or discussGet everyone on the same page
- Matt PadghamReservoir Engineering Advisor, Ascent ResourcesA reservoir simulation study or sensitivity that took hours or days historically can now be completed with confidence in the matter of minutes.
- Saul Rivera BarrazaReservoir Engineer, Murphy OilThe whitson+ team and software have made a significant impact at Murphy, demonstrated by the ability to model over 1,000 South Texas wells, some with a vintage dating back to 2010.
- Brian CollinsStaff Engineer, Continental ResourcesCombining solid PVT with both numerical RTA and multiphase FMB gives a lot of freedom to investigate well performance and find “consensus.”
United States
- Eagle Ford / Austin Chalk – Texas (Multi client)
- Permian (Midland & Delaware) – Texas & New Mexico (Multi client)
- Anadarko Basin (SCOOP/STACK/Merge) – Oklahoma (Multi client)
- Bakken – North Dakota (Multi client)
- Powder River – Wyoming & Montana (Multi client)
- Uinta Basin – Utah / Colorado (Multi client)
- Utica Basin – Pennsylvania (Multi client)
- DJ Basin - Colorado (Multi client)
- Arkoma Basin – Oklahoma (Single client)
- Midland-Barnett - Texas (Multi client)
- Montney, Alberta & British Columbia (Multi client)
- Duvernay, Alberta (Multi client)
- Garrington, Alberta (Single client)
- Jafurah basin, Saudi Arabia (Single client)
- Vaca Muerta, Argentina (Single client)
100s of PVT lab reports (and >$10M of data!) have been incorporated into these studies, enabling you to extract the insight and value at a fraction of the cost
The participation budget is 40,000 USD per company.