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

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10’ n w 2 100 v) v) w a P v) v) w A 2 0 v) 2 lo-’ w z n Ap - 1.0 psi t = 1.0 hr PO 0.28 tO/CD - 1.35 CDe2s 10.0 PI : 42.55 psig 0 PRESSURE DATA -- PRESSURE-DERIVATIVE DATA - SIMULATIONS I I I I 10-2 I lo-’ 100 10‘ 102 103 104 DIMENSIONLESS TIME GROUP, t,/C, Figure 5-108. CarperlCenozoic Alluvium Pumping Test Drawdown Log-Log Plot with INTERPRET Simulation 4.0 I I 3.0 - - n .‘ 2.0 n ,012 - MATCH PARAMETERS .zP f 10 PSI 1.0 hr PD 0 28 ’D cD 135 C,e2* 100 P’ 42 55 psig 1 .o + DATA - SIMULATION 0.0 -1.0 I I 0.0 1 .o 2.0 DIMENSIONLESS SUPERPOSITION FUNCTION: FLOW PERIOD 1 Figure 5109. Carper/Cenozoic Alluvium Pumping Test Drawdown Dimensionless Homer Plot 130 with INTERPRET Simulation
6. DISCUSSION OF RUSTLER FLOW SYSTEM The single-well testing discussed in this report has provided significant information on the transmissivities and hydraulic-head relations of the five Rustler members. In particular, our knowledge of the distribution of transmissivity within the Culebra dolomite has increased considerably. Section 6.1 attempts to explain the distribution of Culebra transmissivity in the context of geologic models of halite deposition and dissolution within the Rustler Formation. Recent hydraulic-head measurements made at H-3d, H-14, H-16, and DOE-2 have helped to increase our understanding of the directions of potential vertical fluid movement within the Rustler. Section 6.2 discusses the hydraulic-head relations among the Rustler members, and their implications regarding recharge to the Rustler Formation. 6.1 Culebra Transmissivity Mercer (1 983) reported values for Culebra transmissivity at 20 locations. The testing described in this report has provided values for Culebra transmissivity at 15 new locations, and new estimates at 7 locations for which values had previously been reported. Combined with other recent work performed at DOE-2 (Beauheim, 1986), H-3 (Beauheim, 1987a), H-11 (Saulnier, 1987), and WIPP- 13 (Beauheim, 1987b), the WlPP project has tested the Culebra at 38 locations. Figure 6-1 shows these 38 locations and the transmissivity values at each provided by this report or those referenced above. Figure 6-2 shows the areas around the WlPP site where halite is present in the non-dolomite Rustler members, as indicated by Snyder (1985 and personal communication) and Powers (personal communication). According to Snyder, halite was originally deposited in the unnamed lower, Tamarisk, and Forty-niner Members of the Rustler over the entire area covered by Figure 6-2. The present-day absence of halite from these members reflects the eastward progression of a dissolution front. This dissolution front apparently affects the uppermost Rustler halite, that in the Forty-niner, first, and works progressively downsection to the upper Salado Formation. Thus, the eastwarc extent o e Fortyniner dissolution front is greater than that of the Tamarisk dissolution front, which is in turn greater than the eastward extent of the dissolution front in the unnamed lower member (Figure 6-2). Dissolution of the upper Salado follows dissolution of halite from the unnamed lower member of the Rustler. Lagging behind the dissolution front in each member is a second front where anhydrite is being hydrated to gypsum. In Snyder’s view, as halite is removed beneath the Rustler dolomites, the dolomites subside and fracture. Similar subsidence and fracturing may affect the anhydrites, allowing more groundwater flow through them which may effect their hydration to gypsum. Note that the areas shown on Figure 6-2 indicate only that some halite is present in the appropriate members, not that the full thicknesses originally deposited are present. For example, Snyder (1985) states that only about half of the halite originally present in the unnamed lower member at WIPP-21 is there today. Alternatively, Holt and Powers (1988) believe that the different amounts of halite seen in the Rustler members at the WlPP site more likely represent original depositional differences and/or syndepositional dissolution than later progressive dissolution. They relate fracturing to stress relief caused by unloading of the Rustler, citing a preponderance of horizontal (as opposed to vertical) fractures within the Rustler as evidence. According to their hypothesis, fracturing would be expected to become less pronounced eastward as the depth of burial of the Rustler increases. Holt and Powers (1988) also do not believe that all of the gypsum present in the Rustler is related to the hydration of anhydrite, but that it is instead primary, pointing to the presenration of primary sedimentary structures as evidence. Holt and Powers do find evidence for latestage dissolution of halite from the upper Salado in Nash Draw, however, and relate disruption of the overlying Rustler to this dissolution. As can be seen on Figure 6-2, the highest values of Culebra transmissivity are found in areas in or close 131
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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
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 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 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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