Southern Sector Humate Injection Well Performance Testing
- Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Three short duration injection tests were conducted on wells at the humate test site. For each injection event, potable water was gravity drained into the well casing. Pressure response was monitored in the injection well and these data were used to estimate the injection capacity of each well. Injection capacity was calculated by dividing the average injection flow rate by the head increase observed in the injection well. Nearby injection wells were used as observation wells and data from these wells were used to estimate the local hydraulic conductivity. The results of this analysis show that it is hydraulically feasible to gravity inject water into the test wells. The estimated water injection capacity of each well as determined by injecting potable water is shown. It is important to note that these short duration tests utilized water and not the humate solution that will ultimately be injected into the aquifer. The results of these tests do not account for physical or chemical processes that may occur over longer time scales. Injection well performance typically declines over time due to water-chemistry issues, air entrainment, and aquifer clogging. Therefore, these results should be viewed as optimistic estimates of injection capacity. Data from the injection tests were analyzed to estimate local aquifer properties. Transmissivity values for all tests ranged from 0.62 to 1.07 ft2/min with an average value of 0.805 ft2/min. Hydraulic conductivity was calculated by dividing transmissivity by the aquifer thickness (53 ft). Hydraulic conductivity ranged from 16.7 to 29.2 ft/day with an average value of 21.9 ft/day. Storativity values ranged from 0.0001 to 0.001 with an average value of 0.0006.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM)
- DOE Contract Number:
- AC09-08SR22470
- OSTI ID:
- 1568775
- Report Number(s):
- SRNL-STI-2019-00438; TRN: US2100460
- Country of Publication:
- United States
- Language:
- English
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