1.1Â This practice covers a procedure for conducting on-site core flood tests to determine the filtration and chemical treatment requirements for subsurface injection of water.2, 3
1.2Â This practice applies to water disposal, secondary recovery, and enhanced oil recovery projects and is applicable to injection waters with all ranges of total dissolved solids contents.
5.1Â The injectivity of a water is best determined by measurements as near to the well as possible to minimize changes in water properties due to air contact and time. This practice describes how core flow tests are carried out near the well.
5.2Â This practice permits the differentiation of permeability losses from the effects of chemical interaction of water and rock and from the effects of plugging by suspended solids. The procedure can be utilized to estimate the chemical and filtration requirements for the full-scale injection project.
| SDO | ASTM: ASTM International |
| Document Number | D4520 |
| Publication Date | Jan. 1, 2013 |
| Language | en - English |
| Page Count | 7 |
| Revision Level | 13 |
| Supercedes | |
| Committee | D19.05 |