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

6
4
.-
h
.L
n
*I 2
n
.
:I%
MATCH PARAMETERS
AP = 1.0 psi
t
= 1.0hr
PO = 0.09
- !dC, -730
CDe2s = 3000
P'
= 153.2 psia
0
+ DATA
- SIMULATION
-2
0 1 2 3
DIMENSIONLESS SUPERPOSITION FUNCTION: FLOW PERIOD 7
Figure 5-39. H-1 5/Culebra Second Buildup Dimensionless Horner Plot with INTERPRET Simulation
Figure 5-40 shows a semilog plot of the rising-head
slug-test data, along with the best-fit type curve. This
fit provides a transmissivity estimate of 0.10 ftz/day
(Table 5-3), which is in reasonable agreement with
the FBU and SBU results. The best slug-test fit was
obtained by assuming that the pressure was
recovering to a static value of 160.0 psia, indicating
the continuing influence of the underpressure skin
after the SBU.
5.2.2.7 H-16. Testing of the Culebra at H-16 was
planned to provide transmissivity data necessary to
model the response of the Culebra to the
construction of the Air-Intake Shaft at the WIPP. The
Culebra lies from 702.5 to 724.4 ft deep at H-16
(Figure 3-8). The interval tested extended from
696.5 ft to the then-bottom of the hole at 733.9 ft.
Thus, in addition to the Culebra, the lower 6 ft of the
Tamarisk and the upper 9.5 ft of the unnamed lower
member were tested. With the exception of the
lower 2.9 ft of the Tamarisk, these overlying and
underlying intervals are composed of gypsum and
claystone, respectively, and were not considered to
have contributed significantly to the transmissivity
measured during the Culebra testing. The lower
2.9 ft of the Tamarisk is composed of claystone,
siltstone, and sandstone, and may have hydraulic
properties similar to those of the underlying Culebra.
Hydrologically, the Culebra and the lower Tamarisk
probably behave as a single unit.
All of the Culebra testing was performed on August
7, 1987, the day after the Culebra was cored. The
testing consisted of two DST flow periods, two
buildup periods, and a rising-head slug test
(Figure 5-41). The FFL lasted about 17 minutes, and
was followed by a 161-minute FEU. The SFL lasted
about 24 minutes, and was followed by a 208-minute
SBU. For analyses of the buildup data, the FFL was
divided into two flow periods with rates of 0.731 and
0.500 gpm, and the SFL was divided into two flow
periods with rates of 0.818 and 0.512 gpm
(Table 5-1). The slug test lasted 162 minutes, by
which time 93% of the induced pressure differential
had dissipated. The data from these tests are
presented in Stensrud et al. (1988).
77