Performance of the steady-state dipole flow test in layered aquifers

✍ Scribed by J. Xiang; Z. J. Kabala

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 173 KB
• Volume: 11
• Category: Article
• ISSN: 0885-6087
• DOI: 10.1002/(sici)1099-1085(19971015)11:12<1595::aid-hyp489>3.0.co;2-0

✦ Synopsis

Steady-state numerical simulations of the dipole ¯ow test in layered aquifers demonstrate that the test produces a good estimate of the equivalent hydraulic conductivity anisotropy ratio for the part of the aquifer spanned by the well chambers. The eects of chamber size, dierent conductivity of layers and layer location on the estimated anisotropy ratios are presented. The steady-state dipole ¯ow test, when performed at dierent levels in the well, can yield estimates of the down-hole anisotropy ratio distribution. Numerical simulations also illustrate that the skin eect can signi®cantly distort the anisotropy estimates produced by the dipole ¯ow test. # 1997