Characterization and modification of fluid conductivity in heterogeneous reservoirs to improve sweep efficiency. [Quarterly report], April 1--June 30, 1993
Work performed during this quarter was aimed at investigating the behavior of foamed gel using our newly developed model. Three porous medium and gel properties were systematically varied to determine their effect on the foamed gel breakdown process; The pore throat size distribution standard deviation, {sigma}, was varied to investigate the effect of microscopic heterogeneities. Three different rupture pressure relationships (RPR) were used to simulate gels with different yield functionalities. Two different deformation constant relationships (DCR) were used to study gel elasticity. The variance between runs with different properties was adequately revealed using a 10 by 10 network; thus larger networks were avoided and computational effort saved. The pore throat and lens dimensions were assigned to the network via random sampling of a normal distribution. The maximum and minimum bond diameters were the mean bond size, plus or minus three standard deviations, respectively. A mean lens length and standard deviation of 1e{sup {minus}4} m, and 3e{sup {minus}6} m, were used in every run. A narrow lens size distribution was used in absence of a relationship between lens length and pore throat diameter. Furthermore, foamed gel heterogeneity could be simulated easily by varying the pore throat size distribution against the narrow lens length distribution. This technical progress report discusses only one of the interesting results found during our modeling investigation, the effect of gel elasticity on foamed gel breakdown.
- Research Organization:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-89BC14474
- OSTI ID:
- 10191608
- Report Number(s):
- DOE/BC/14474-15; ON: DE94001745; BR: AC0520050/AC0530000
- Resource Relation:
- Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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