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

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was followed by a 92-minute FBU. The SFL lasted about 32 minutes, and was followed by a SBU almost 16 hr long. To obtain equivalent constant-rate flow periods, each of the flow periods was divided into two shorter periods. The FFL was divided into two periods with flow rates of 0.028 and 0.021 gpm, and the SFL was divided into periods with flow rates of 0.022 and 0.017 gpm (Table 5-1). The slug test lasted slightly over 6 hr, by which time about 57% of the induced pressure differential had dissipated. Overpressureskin effects were apparent during the Forty-niner claystone testing, just as they were during all other testing at H-14. The fluid pressure reached a maximum of 67.9 psia during the initial equilibration period, was essentially constant at 66.8 psia at the end of the FBU, and peaked at 66.2 psia during the SBU (Figure 5-95). The superposition of pressure-skin effects manifested in the Magenta test data (see Section 5.2.4.1) was not apparent, however, in the Forty-niner claystone test data. Figure 5-96 shows a log-log plot of the Forty-niner claystone FBU data with an INTERPRET-generated simulation. The late-time pressure derivative shows the decline indicative of overpressure skin. The simulation is representative of a single-porosity medium with a transmissivity of 7.1 x 10-2 ftzjday (Table 5-2). Assuming a porosity of 30%, a totalsystem compressibility of 1.0 x 10-5 psi-', and a fluid viscosity of 1.0 cp, the skin factor for this simulation is about 3.2, indicating a damaged well. The dimensionless Horner plot of the FEU data is shown in Figure 5-97. The simulation matches the observed data very well until late time, when the data deviate towards a static pressure lower than the 67.8 psia specified for the simulation. This discrepancy between the observed data and the 10' 0 n w' a 3 v) v) w a n 2 100 W 4 2 2 v) 2 w s 5 MATCH PARAMETERS AP = 1.0 psi t = 1.0 hr PO = 0.21 tdc, = 120 Cge2. = 5000 ** 0 PRESSURE DATA * PRESSURE-DERIVATIVE DATA - SIMULATIONS 10' 100 10' 102 DIMENSIONLESS TIME GROUP, tdC, 103 Figure 596. H-l4/Forty-Niner Claystone First Buildup Log-Log Plot with INTERPRET Simulation 120
6.0 - 4.0 h . Y I n I n 818 2.0 0.0 0.0 0.5 1 .o 1.5 2.0 DIMENSIONLESS SUPERPOSITION FUNCTION: FLOW PERIOD 3 Figure 5-97. H-14/Forty-Niner Claystone First Buildup Dimensionless Horner Plot with INTERPRET Simulation simulation is entirely consistent with the effects of an overpressure skin. The log-log plot of the SBU data is shown in Figure 5-98. Overpressure-skin effects are once again evident in the late-time pressure derivative. The simulation shown was generated by lNTERPRl3 using a single-porosity model and a transmissivity of 6.9 x ft2/day (Table 5-2). With the assumed parameter values listed above, the skin factor for this simulation is about 3.3, comparable to the value obtained from the FBU analysis. A log-log early-time plot of the rising-head slug-test data is shown in Figure 599, along with the best-fit type curve. The fit is quite good until near the end, when the observed data oscillate for an unknown reason. The type-curve fit shown provides a transmissivity estimate of 3.0 x 10-2 ft2/day (Table 5-2), which is slightly less than half of the values provided by the FBU and SBU analyses. A slightly different type-curve fit might have been indicated had the late-time data been better behaved. The static formation pressure for the Forty-niner claystone is difficult to estimate because of the overpressure-skin effects present during the buildup tests, and because of the nonideal behavior during the latter portion of the slug test. The static formation pressure must be less than the final pressure measured at the end of the SBU, 65.5 psia. The slugtest analysis relied on a static formation pressure estimate of 62 psia, although a reasonably good fit was also obtained using an estimate of 65 psia. Considering that the transducer during these tests was set 362.9 ft deep, that the transducer measured an atmospheric pressure of 12 psia before testing began, and that the borehole contained brine with a specific gravity of 1.2, 65 psia corresponds to a static formation pressure of 71 psig at the midpoint of the claystone 398 ft deep. This value is reliably a maximum. 121
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SANDIA REPORT SAND87 -0039 UC - 70
Page 3 and 4:
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
Page 70 and 71: 10' n ui K 3 v) v) W a n v) v) 100
Page 72 and 73: 10' MATCH PARAMETERS O n w a 3 v) v
Page 74 and 75: ..CI__._._..__....__.I 5.2.2.6 H-15
Page 76 and 77: 8.0 1 I I I MATCH PARAMETERS AP 1.0
Page 78 and 79: - 200 150 5 - EQUILIBRATION \Feu 'S
Page 80 and 81: 4.0 1 I 1 1 3.0 I n 2.0 1 .o 0.0 0.
Page 82 and 83: 1.0 0.9 0.8 0.7 0.6 0 0.5 0.4 0.3 0
Page 84 and 85: 3.0 .hl c El2 2.0 . v n I P 1 .o MA
Page 86 and 87: EI€3- 0.9 "O I OOATA - TYPE CURVE
Page 88 and 89: 4.0 I I I 3.0 MATCH PARAMETERS AP =
Page 90 and 91: 1 .o 0.9 0.8 0.7 1 MATCH PARAMETERS
Page 92 and 93: 1 .o 0.9 0.8 0.7 0.6 0 2 0.5 I 0.4
Page 94 and 95: 1.0, 0 I 0.9 0.8 0.7 0.6 0.5 0.4 MA
Page 96 and 97: P-15 was bailed on four occasions i
Page 98 and 99: 1 .o 0.9 0.8 - p’ = 78.93 prig p,
Page 100 and 101: Two type-curve matches are shown wi
Page 102 and 103: 0 5 I ELAPSED TIME. hours Figure 5-
Page 104 and 105: 10’ 1 I I I n a w 5 100 v) v) W a
Page 106 and 107: MATCH PARAMETERS -ip 10 PSI 150 t 1
Page 108 and 109: 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 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 160 and 161: A.4 INTERPRET WELL-TEST INTERPRETAT
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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