Subsuface Flow Subsuface Flow ModelingModeling

Martin Blunt and Branko Martin Blunt and Branko BijeljicBijeljic

Stefan IglauerStefan Iglauer Ran Qi Ran Qi Saleh Al-Mansoori, Saif

Alsayari

Overview Overview

Single pore modelSingle pore model Network model (pore to core scale)Network model (pore to core scale) Lab-scale experiments Lab-scale experiments Preliminary Study of Maureen Field Preliminary Study of Maureen Field

for EOR/COfor EOR/CO22 Storage Storage Developing streamline-based Developing streamline-based

simulator to study COsimulator to study CO22 Storage Storage Working on Design of COWorking on Design of CO22 Storage Storage

to Trap CO2to Trap CO2

Pore Scale: Pore Scale: Single Pore ModelSingle Pore Model

Lagrangian based modelLagrangian based model Diffusion – advection - reactionDiffusion – advection - reaction

Overlap Update

Cubic network

Pore to Core Scale: Pore to Core Scale: Network Model Network Model

Use Network Libraries to describe pore space Use Network Libraries to describe pore space

Multiphase flow, dispersion and reactionMultiphase flow, dispersion and reaction

MEAN FLOW DIRECTION X

Pore to Core Scale: Pore to Core Scale: Column ExperimentsColumn Experiments

Field Scale: Maureen Field Scale: Maureen Field for EOR/COField for EOR/CO2 2 StorageStorage

Oil Saturation

Maureen field – Preliminary study using Maureen field – Preliminary study using EclipseEclipse– Abandoned sandstone reservoirAbandoned sandstone reservoir– 413 million barrels (1.5x10413 million barrels (1.5x108 8 mm33) oil) oil

– Simulate injection of COSimulate injection of CO2 2 after waterfloodingafter waterflooding

Maureen – Long Term Maureen – Long Term FateFate How to contain COHow to contain CO22::

A) Dissolution COA) Dissolution CO22 dissolves in water dissolves in watertimescales 1000-yeartimescales 1000-year

B) Reaction carbonate precipitationB) Reaction carbonate precipitationtimescales 10timescales 1033 – 10 – 1099 years years

C) Trapping COC) Trapping CO2 2 as pore scale droplets as pore scale droplets timescales decadestimescales decades surrounded by water surrounded by water

Maureen - Conclusions Maureen - Conclusions

COCO2 2 and water injection increased oil and water injection increased oil recovery by 5-10%recovery by 5-10%

This represents up to 1billion pound This represents up to 1billion pound revenue from increased oil production revenue from increased oil production while storing over 55 million tonnes of COwhile storing over 55 million tonnes of CO22

This is equivalent of all the COThis is equivalent of all the CO2 2 produced produced from all activities from the population of from all activities from the population of London in a yearLondon in a year

In the future, these strategies could be In the future, these strategies could be applied to other North Sea fields applied to other North Sea fields

Field Scale: Developing Field Scale: Developing streamline-based streamline-based simulator to study COsimulator to study CO2 2

StorageStorage SPE10 test – STREAMLINESPE10 test – STREAMLINE

WAG injectionWAG injection

producer

injectorproducer producer

producer

82.5% 82.5% COCO2 2 can be trapped as an immobile can be trapped as an immobile phasephase

WAG injection for better sweep WAG injection for better sweep efficiencyefficiency

CollaborationsCollaborations

Are there any reservoir Are there any reservoir descriptionsdescriptions

that you would like to share for that you would like to share for

flow studies?flow studies?