Beauheim 1987 - Waste Isolation Pilot Plant - U.S. Department of ...

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A.4 INTERPRET WELL-TEST INTERPRETATION CODE Manual type-curve fitting is a time-consuming process limited by the published type curves available, and by the degree of resolution/differentiation obtainable in manual curve fitting. The pumping-test and buildup analyses presented in this report were not performed manually, but by using the well-test analysis code INTERPRET developed by A.C. Gringarten and Scientific Software-lntercomp (SSI). INTERPRET is a proprietary code that uses analytical solutions. It can be leased from SSI. INTERPRET can analyze drawdown (flow) and recovery (buildup) tests in single-porosity, double-porosity, and fractured media. It incorporates the analytical techniques discussed above, and additional techniques discussed in Gringarten et al. (1974). Bourdet and Gringarten (1980). and Gringarten (1984). Rather than relying on a finite number of drawdown type curves, INTERPRET calculates the precise drawdown or buildup type curve corresponding to the match point and data point selected by the user. After type-curve selection, INTERPRET simulates the test with the chosen parameters so that the user can see how good the match truly is. Through an iterative parameter-adjustment process, the user fine-tunes the simulation until satisfied with the results. Log-log and semilog (Horner and dimensionless Horner) plotting techniques are employed in a cross-checking procedure to ensure consistency of the final model with the data in every respect. Once the final model is selected, INTERPRET calculates final parameter values. Analyses obtained using INTERPRET have been verified by manual calculations. In addition to standard type-curve analysis, INTERPRET allows the incorporation of constant-pressure and no-flow boundaries in analysis, using the theory of superposition and image wells discussed by Ferris et al. (1962). A constant-pressure boundary can be simulated by adding a recharge (image) well to the model. A no-flow boundary can be simulated by adding a discharge (image) well to the model. Drawdowns and rises from multiple discharge and recharge wells are additive. In INTERPRET, an image well (either discharge or recharge) is included by specifying a dimensionless distance for the image well from the production well, and by using the line-source solution of Theis (1935) to calculate the drawdown or recovery caused by that well at the production well. Theis (1935) derived an exponential integral (Ei) solution for drawdown caused by a line-source well in a porous medium: po = -0.5 Ei(-rD2/4tD) (A-35) where: = 0.000264 kht - (A-36) rD2 @pc,hr2 The terms pD and tD are defined by Eqs (A-1) and (A-2), respectively; other terms are as defined above in Section A.l.l.
The dimensionless distance from the production well to the image well is related to the "actual" distance to the image well, r,, by the following: (A-37) where: D, = dimensionless distance and other terms are as defined above. The actual hydraulic boundary is then half of the distance from the production well to the image well. 161
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SANDIA REPORT SAND87 -0039 UC - 70
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SAND87-0039 Unlimited Release Print
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a transmissivity of about 7 x 10-2
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5 . TEST OBJECTIVES AND INTERPRETAT
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3-18 3-19 3-20 3-21 3-22 3-23 3-24
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5-35 H-l5/Culebra Drillstem and Slu
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5-78 5-79 5-80 5-81 5-82 5-83 5-84
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A-2 A-3 A4 A-5 A-6 Single-Porosity
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'H-6 o DOE-2 OHIPP-13 OAIPP 12 OH-1
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WlPP site. The aggregate thickness
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deep. The gamma-ray log used to gui
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3347.11 ft \ - -12.25-inch HOLE -8.
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~ 3409.6 n __ - - HOLOCENE DEPOSITS
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Ylf M (t -1wt 5 n nch REAMED BOREHO
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3418.96 n 7.875-inch REAMED BOREHOL
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2.375-inch TUBING 4.5-inch. 9.5 Ibl
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WELL CASING 2.375-inch TUBING TEST-
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1.5-Inch GALVANIZED PIPE WELL CASIN
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I I I I PRE-TEST STATIC PRESSURE i/
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(or areal extent) of the aquifer on
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:7001 J EQUILIBRATION / r.. .......
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Once straddle tests proved impossib
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1300 c - J PRE-TEST PRESSURE IN TES
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- < a m L: * m 3 L a I Start Date:
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uildups were caused by the natural
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TABLE 5-1 EFFECTIVE DST FLOW RATES
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TABLE 5-2 SUMMARY OF NON-CULEBRA SI
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simulation shown, however, uses a t
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1 .o 0.9 0.8 p' = 79.08 paig pi = 6
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~ ~~ TABLE 5-3 SUMMARY OF CULEBRA S
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Two factors raised questions about
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102 I I 1 1 1 W K 3 v) v) W K n v)
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5.2.2.21 below) and DOE-2 (Beauheim
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..A 225 - PRESSURE ABOVE TEST INTER
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10' n ui K 3 v) v) W a n v) v) 100
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10' MATCH PARAMETERS O n w a 3 v) v
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..CI__._._..__....__.I 5.2.2.6 H-15
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8.0 1 I I I MATCH PARAMETERS AP 1.0
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- 200 150 5 - EQUILIBRATION \Feu 'S
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4.0 1 I 1 1 3.0 I n 2.0 1 .o 0.0 0.
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1.0 0.9 0.8 0.7 0.6 0 0.5 0.4 0.3 0
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3.0 .hl c El2 2.0 . v n I P 1 .o MA
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EI€3- 0.9 "O I OOATA - TYPE CURVE
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4.0 I I I 3.0 MATCH PARAMETERS AP =
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1 .o 0.9 0.8 0.7 1 MATCH PARAMETERS
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1 .o 0.9 0.8 0.7 0.6 0 2 0.5 I 0.4
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1.0, 0 I 0.9 0.8 0.7 0.6 0.5 0.4 MA
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P-15 was bailed on four occasions i
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1 .o 0.9 0.8 - p’ = 78.93 prig p,
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Two type-curve matches are shown wi
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0 5 I ELAPSED TIME. hours Figure 5-
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10’ 1 I I I n a w 5 100 v) v) W a
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MATCH PARAMETERS -ip 10 PSI 150 t 1
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Considering that all other pumping
Page 110 and 111: I ,EQUILIBRATION BUILDUP Elapsed Ti
Page 112 and 113: 0 9. w 10’ K =a 100 v) v) W a n v
Page 114 and 115: 10’ I I I a J P 100 v) v) W a n v
Page 116 and 117: ~ ~. SLUG t i /- i 3 Start Date 07
Page 118 and 119: Figure 5-94 is a log-log plot of th
Page 120 and 121: was followed by a 92-minute FBU. Th
Page 122 and 123: 10’ 1 1 1 1 a n w’ a = 100 v) v
Page 124 and 125: and anhydrite, and were not conside
Page 126 and 127: 4.0 MATCH PARAMETERS .A. L. 21% 3.0
Page 128 and 129: Estimates of the static formation p
Page 130 and 131: 10’ n w 2 100 v) v) w a P v) v) w
Page 132 and 133: OWIPP-28. 70 OWIPP-27.650 OWIPP-30.
Page 134 and 135: to Nash Draw where no halite is pre
Page 136 and 137: observations regarding the potentia
Page 138 and 139: 7. SUMMARY AND CONCLUSIONS Single-w
Page 140 and 141: REFERENCES Bachman, G.O. 1984. Regi
Page 142 and 143: INTERA Technologies, Inc. 1986. WlP
Page 144 and 145: Stensrud, W.A.; Bame, M.A.; Lantr,
Page 146 and 147: (A-4)
Page 148 and 149: distinct value of Coe2s. Pressure-d
Page 150 and 151: The wellbore storage coefficient is
Page 152 and 153: where: n = number of normal sets of
Page 154 and 155: (A-21) and for spherical blocks the
Page 156 and 157: where: tp* = Vfq, V = total flow pr
Page 158 and 159: Figure A-5. Semilog Slug-Test Type
Page 162 and 163: DISTRIBUTION: U. S. Department of E
Page 164 and 165: INTERA Technologies, Inc. (9) 6580
Page 166 and 167: WlPP Public Reading Room Carlsbad M
Page 168 and 169: Nationale Genossenschaft fur die La
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