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Title: Analysis of Geologic CO2 Migration Pathways in Farnsworth Field, NW Anadarko Basin

Journal Article · · Energies
DOI: https://doi.org/10.3390/en14227818 · OSTI ID:1838298
 [1];  [2];  [3];  [3];  [2];  [4]
  1. New Mexico Institute of Mining and Technology, Socorro, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. New Mexico Institute of Mining and Technology, Socorro, NM (United States)
  3. Univ. of Utah, Salt Lake City, UT (United States)
  4. New Mexico Institute of Mining and Technology, Socorro, NM (United States); SM Energy Company, Denver, CO (United States)
+ Show Author Affiliations

This study reports on analyses of natural, geologic CO2 migration paths in Farnsworth Oil Field, northern Texas, where CO2 was injected into the Pennsylvanian Morrow B reservoir as part of enhanced oil recovery and carbon sequestration efforts. We interpret 2D and 3D seismic reflection datasets of the study site, which is located on the western flank of the Anadarko basin, and compare our seismic interpretations with results from a tracer study. Petroleum system models are developed to understand the petroleum system and petroleum- and CO2-migration pathways. We find no evidence of seismically resolvable faults in Farnsworth Field, but interpret a karst structure, erosional structures, and incised valleys. These interpretations are compared with results of a Morrow B well-to-well tracer study that suggests that inter-well flow is up-dip or lateral. Southeastward fluid flow is inhibited by dip direction, thinning, and draping of the Morrow B reservoir over a deeper, eroded formation. Petroleum system models predict a deep basin-ward increase in temperature and maturation of the source rocks. In the northwestern Anadarko Basin, petroleum migration was generally up-dip with local exceptions; the Morrow B sandstone was likely charged by formations both below and overlying the reservoir rock. Based on this analysis, we conclude that CO2 escape in Farnsworth Field via geologic pathways such as tectonic faults is unlikely. Abandoned or aged wellbores remain a risk for CO2 escape from the reservoir formation and deserve further monitoring and research.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
89233218CNA000001; FC26-05NT42591
OSTI ID:
1838298
Report Number(s):
LA-UR-21-28349
Journal Information:
Energies, Vol. 14, Issue 22; ISSN 1996-1073
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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58 GEOSCIENCES
Earth sciences
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Farnsworth Field
Petroleum system modeling
CO2 migration