Status and outlook of oil field chemistry-assisted analysis during the energy transition period
Analytical chemistry is powerful in analyzing complex mixtures of crude oil and brine
subsurfaces on the basis of atomic and molecular levels. Geochemistry applies chemical …
subsurfaces on the basis of atomic and molecular levels. Geochemistry applies chemical …
Minimum miscibility pressure of CO2 and oil evaluated using MRI and NMR measurements
The minimum miscibility pressure (MMP) between CO 2 and crude oil is a critical parameter
for CO 2 enhanced oil recovery (EOR). Whilst different methodologies have been employed …
for CO 2 enhanced oil recovery (EOR). Whilst different methodologies have been employed …
Evaluation of huff-n-puff in shale using experiments and molecular simulations
The proper design of huff-n-puff EOR projects requires the optimization of parameters such
as solvent composition, injection pressure, soak time, production time, and number of cycles …
as solvent composition, injection pressure, soak time, production time, and number of cycles …
Impact of EOR Huff-n-puff on rock microstructure
Field and laboratory studies have shown that EOR Huff-n-Puff (HnP) in tight rocks can
mobilize additional hydrocarbon. However, these previous studies have not investigated …
mobilize additional hydrocarbon. However, these previous studies have not investigated …
Hydrocarbon self-diffusion and assessing the validity of graham's law under nanoporous confinement in shales
F Perez, D Devegowda - Energy & Fuels, 2021 - ACS Publications
Due to the ultralow porosity and permeability of shales, molecular diffusion plays an
important role in fluid migration and transport. Several studies have experimentally …
important role in fluid migration and transport. Several studies have experimentally …
Experimental observation of diffusion as the main drive mechanism in unconventional shales
To evaluate the reservoir quality of unconventional tight rocks, permeability is usually
considered as the controlling transport parameter. Perskin (1968) defined the general …
considered as the controlling transport parameter. Perskin (1968) defined the general …
Does EOR in unconventionals change the rock?
Recent interest in EOR in unconventionals, typically comprised of organic and inorganics,
begs the question: does the process change the rock in measurable ways? We ran a series …
begs the question: does the process change the rock in measurable ways? We ran a series …
How Far Does EOR Solvent Penetrate Kerogen in Shales?
F Perez, D Devegowda - … Technology Conference, 20–22 July 2020, 2020 - library.seg.org
In a huff-and-puff EOR process, soak-time allows for solvent mixing (via advection or
diffusion) with the oil in the pore spaces. By extension, a common belief is that a longer soak …
diffusion) with the oil in the pore spaces. By extension, a common belief is that a longer soak …
Impact of stimulated reservoir volume in the efficacy of miscible gas injection EOR in shale reservoirs
R Sahai, RG Moghanloo - SPE Improved Oil Recovery Conference?, 2022 - onepetro.org
As the unconventional shale development matures, the industry has been actively seeking
new ways to unlock incremental value beyond primary depletion. In particular, the miscible …
new ways to unlock incremental value beyond primary depletion. In particular, the miscible …
Molecular Signatures of Solvent Injection in Shale Organic Nanopores
F Perez, D Devegowda - SPE Improved Oil Recovery Conference?, 2020 - onepetro.org
In this study, we investigate the mixing process of an organic solvent with reservoir fluids in
organic nanopores. Using molecular dynamics (MD) simulations, we create a molecular …
organic nanopores. Using molecular dynamics (MD) simulations, we create a molecular …