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Time-Lapse Integration at FWU: Fluids, Rock Physics, Numerical Model Integration, and Field Data Comparison

Author

Listed:
  • Robert Will

    (New Mexico Tech/PRRC, Socorro, NM 87801, USA)

  • Tom Bratton

    (Tom Bratton LLC, Littleton, CO 80127, USA)

  • William Ampomah

    (New Mexico Tech/PRRC, Socorro, NM 87801, USA)

  • Samuel Acheampong

    (New Mexico Tech/PRRC, Socorro, NM 87801, USA)

  • Martha Cather

    (New Mexico Tech/PRRC, Socorro, NM 87801, USA)

  • Robert Balch

    (New Mexico Tech/PRRC, Socorro, NM 87801, USA)

Abstract

We present the current status of time-lapse seismic integration at the Farnsworth (FWU) CO 2 WAG (water-alternating-gas) EOR (Enhanced Oil Recovery) project at Ochiltree County, northwest Texas. As a potential carbon sequestration mechanism, CO 2 WAG projects will be subject to some degree of monitoring and verification, either as a regulatory requirement or to qualify for economic incentives. In order to evaluate the viability of time-lapse seismic as a monitoring method the Southwest Partnership (SWP) has conducted time-lapse seismic monitoring at FWU using the 3D Vertical Seismic Profiling (VSP) method. The efficacy of seismic time-lapse depends on a number of key factors, which vary widely from one application to another. Most important among these are the thermophysical properties of the original fluid in place and the displacing fluid, followed by the petrophysical properties of the rock matrix, which together determine the effective elastic properties of the rock fluid system. We present systematic analysis of fluid thermodynamics and resulting thermophysical properties, petrophysics and rock frame elastic properties, and elastic property modeling through fluid substitution using data collected at FWU. These analyses will be framed in realistic scenarios presented by the FWU CO 2 WAG development. The resulting fluid/rock physics models will be applied to output from the calibrated FWU compositional reservoir simulation model to forward model the time-lapse seismic response. Modeled results are compared with field time-lapse seismic measurements and strategies for numerical model feedback/update are discussed. While mechanical effects are neglected in the work presented here, complementary parallel studies are underway in which laboratory measurements are introduced to introduce stress dependence of matrix elastic moduli.

Suggested Citation

  • Robert Will & Tom Bratton & William Ampomah & Samuel Acheampong & Martha Cather & Robert Balch, 2021. "Time-Lapse Integration at FWU: Fluids, Rock Physics, Numerical Model Integration, and Field Data Comparison," Energies, MDPI, vol. 14(17), pages 1-24, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5476-:d:627753
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    References listed on IDEAS

    as
    1. Martha Cather & Dylan Rose-Coss & Sara Gallagher & Natasha Trujillo & Steven Cather & Robert Spencer Hollingworth & Peter Mozley & Ryan J. Leary, 2021. "Deposition, Diagenesis, and Sequence Stratigraphy of the Pennsylvanian Morrowan and Atokan Intervals at Farnsworth Unit," Energies, MDPI, vol. 14(4), pages 1-26, February.
    2. Lindsey Rasmussen & Tianguang Fan & Alex Rinehart & Andrew Luhmann & William Ampomah & Thomas Dewers & Jason Heath & Martha Cather & Reid Grigg, 2019. "Carbon Storage and Enhanced Oil Recovery in Pennsylvanian Morrow Formation Clastic Reservoirs: Controls on Oil–Brine and Oil–CO 2 Relative Permeability from Diagenetic Heterogeneity and Evolving Wetta," Energies, MDPI, vol. 12(19), pages 1-33, September.
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    Cited by:

    1. Samuel Appiah Acheampong & William Ampomah & Don Lee & Angus Eastwood-Anaba, 2023. "Coupled Hydromechanical Modeling and Assessment of Induced Seismicity at FWU: Utilizing Time-Lapse VSP and Microseismic Data," Energies, MDPI, vol. 16(10), pages 1-24, May.
    2. William Ampomah & Brian McPherson & Robert Balch & Reid Grigg & Martha Cather, 2022. "Forecasting CO 2 Sequestration with Enhanced Oil Recovery," Energies, MDPI, vol. 15(16), pages 1-7, August.

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