HomeMy WebLinkAboutNC0000396_Geophysical Logging Rpt-Bear Leigh Trail Mar 2016_20160831® Geophysics LLc
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Geophysical Logging Report
Bear Leah Trail Site
Arden, North Carolina
Performed for:
SynTerra
March 7, 2016
a member of The GEL Group INC
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report
Bear Leah Trail Site
Arden, North Carolina
TABLE OF CONTENTS
Section Page
SignaturePage..................................................................................................................................ii
ExecutiveSummary.........................................................................................................................iii
1.0 Introduction........................................................................................................................... 1
2.0 Equipment and Methodology................................................................................................ 1
2.1 Acoustic Televiewer...................................................................................................... 1
2.2 3-Arm Caliper................................................................................................................ 2
2.3 Fluid Temperature........................................................................................................ 2
2.4 Fluid Resistivity............................................................................................................. 2
2.S Single Point Resistance(SPR)........................................................................................ 2
2.6 Spontaneous Potential (SP).......................................................................................... 3
2.7 Heat Pulse Flowmeter(HPF)......................................................................................... 3
3.0 Field Procedures.................................................................................................................... 3
4.0 Data Processing and Results.................................................................................................. 4
Appendices
Appendix 1
Appendix 2
Appendix 3
Geophysical Logs
Rose Diagrams
Heat Pulse Flowmeter Logs and Fracture Characteristics
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Signature Page
This report, entitled "Geophysical Logging, Bear Leah Trail Site, Arden, North Carolina" has
been prepared for SynTerra located in Greenville, South Carolina. It has been prepared under the
supervision of Mr. Jorgen Bergstrom at the request of and the exclusive use of SynTerra. This report
has been prepared in accordance with accepted quality control practices and has been reviewed by
the undersigned.
GEL Geophysics, LLC
A Member of the GEL Group, Inc.
Jorgen Bergstrom
Senior Geophysicist
Scott D. Carney
Director
March 7, 2016
Date
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report
Bear Leah Trail Site
Arden, North Carolina
EXECUTIVE SUMMARY
GEL Geophysics performed geophysical borehole logging services in five 6-inch diameter
groundwater wells located at properties along Bear Leah Trail in Arden, North Carolina. The field
investigation was performed on February 16-18, 2016, and on February 25-26, 2016. This investigation
was conducted to aid SynTerra in evaluating potential pathways for groundwater migration through
fractured bedrock at the site. The geophysical logs consisted of acoustic televiewer, caliper, fluid
resistivity, fluid temperature, single point resistance (SPR), spontaneous potential (SP), and heat pulse
flowmeter (HPF). HPF logging was conducted under both ambient and pumping conditions throughout
the logging intervals.
The logging data was analyzed to determine the location, orientation, and aperture of fractures;
and other features. In addition to these data sets, synthetic caliper logs were calculated from the
acoustic televiewer travel time data to aid in the interpretation. The logs were analyzed for fractures
and other features. Dip, azimuth (dip direction), and aperture were calculated for each detected
fracture based on the televiewer dataset. HPF data was analyzed to detect water producing fractures.
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report
Bear Leah Trail Site
Arden, North Carolina
1.0 INTRODUCTION
GEL Geophysics performed geophysical borehole logging services in five 6-inch diameter
groundwater wells located at properties along Bear Leah Trail in Arden, North Carolina. The
geophysical logs consisted of acoustic televiewer, caliper, fluid resistivity, fluid temperature, single
point resistance (SPR), spontaneous potential (SP), and heat pulse flowmeter (HPF). The field
investigation was performed on February 16-18, 2016, and on February 25-26, 2016. The logging
data was analyzed to determine the location, orientation, and aperture of fractures; and other
features. In addition to these data sets, synthetic caliper logs were calculated from the acoustic
televiewer travel time data to aid in the interpretation.
2.0 EQUIPMENT AND METHODOLOGY
The information below is an overview of the geophysical methodologies used for this
investigation. The intent of this overview is to give the reader a better understanding of each method,
and background information as to what is actually measured, the resolution of the method, and the
limitations imposed by site -specific subsurface conditions.
2.1 Acoustic Televiewer
Acoustic televiewer logging produces a high resolution, magnetically oriented digital image to
map the location, aperture and orientation of intersecting fractures, foliations, and lithologic
contacts. The Acoustic televiewer tool emits a rotating, narrow, acoustic beam that is reflected off
the borehole wall. The travel time and amplitude of the reflected wave are recorded by the tool and
used to create borehole images. Both datasets are useful for identifying the location, aperture and
orientation of fractures. The amplitude of the reflected signal will decrease at the location of
fractures and the travel time will increase. The travel time data can also be used for developing a
high resolution caliper log for a more comprehensive analysis of fractures. Acoustic televiewers can
only be used in fluid filled boreholes. However, the fluid does not have to be optically clear for the
method to work. The acoustic televiewer has a vertical resolution of 2 millimeters.
GEL Geophysics LLC Charleston, SC Charlotte, INC Raleigh, INC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report, Bear Leah Trail Site
Arden, North Carolina (synt00215)
2.2 3-Arm Caliper
March 7, 2016
Page 2
Caliper logging is used to generate a profile of the borehole diameter with depth. The tool
measures the borehole diameter using three spring -loaded arms. Narrow enlargements in the
borehole diameter can, in most cases, be attributed to fractures. Caliper logging can be conducted
above and below the water surface.
2.3 Fluid Temperature
Fluid temperature logging is used to identify where water enters or exits the borehole. In the
absence of fluid flow, a gradual increase on water temperature of approximately 1°F per 100 feet of
depth is expected. Rapid changes in the fluid temperature indicate water -producing or water -
receiving zones. Little or no temperature gradient indicates intervals of vertical flow.
2.4 Fluid Resistivity
Fluid resistivity logging is used to measure the electrical resistivity of the fluid in the borehole.
Variations in fluid resistivity can be contributed to concentration variations of dissolved solids. These
differences can occur when sources of water have contrasting chemistry and have come from
different transmissive zones. Fluid temperature and resistivity are measured concurrently using the
same logging tool.
2.5 Single Point Resistance (SPR)
Single point resistance logging involves passing an alternate current between a surface
electrode and a probe electrode and measuring the voltage difference created by the current. SPR is
then calculated using Ohm's law. SPR is the sum of cable resistance, and the resistance based on the
composition of the medium, the cross sectional area and length of the path through the medium.
Therefore, the single point resistance log does not provide quantitative data. In general, SPR
increases with increasing grain size and decreases with increasing borehole diameter, fracture
density, and the concentration of dissolved solids in the water. Single -point resistance logs are useful
in the determination of lithology, water quality, and location of fracture zones.
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report, Bear Leah Trail Site
Arden, North Carolina (synt0021S)
2.6 Spontaneous Potential (SP)
March 7, 2016
Page 3
SP logging is conducted to measure naturally occurring voltage differences along a borehole.
The method has been found useful for delineating sandstone/shale layering and other boundaries
between permeable and impermeable beds. The measurements are made with reference to an
electrode at ground level. Therefore, SP logging does not provide quantitative data.
2.7 Heat Pulse Flowmeter (HPF)
HPF logging measures the direction and rate of vertical fluid flow in a borehole by heating up a
small volume of water and monitoring temperature variations as the heated water moves with the
fluid flow in the borehole. Under ambient conditions, differences in hydraulic head between two
transmissive fractures produce vertical flow in the borehole. However, if the hydraulic head is the
same, no flow will occur under ambient conditions. Therefore, HPF logging is also conducted under
low -rate pumping conditions. HPF readings are point readings at the location of fractures. The
location and number of these readings can be determined after analyzing the other geophysical logs
for fractures. HPF can be used for measuring vertical flows between 0.005 gallons per minute (gpm)
and approximately 1.5 gpm.
3.0 FIELD PROCEDURES
All GEL Geophysics activities on -site were supervised by a senior geophysicist. For this
investigation, GEL Geophysics used a Mount Sopris Matrix logging system. Pumping tests during HPF
testing were conducted using a Grundfos Redi-Flow-2 water pump with variable speed control box
and an in -situ Mini -Troll pressure transducer with logging capabilities. HPF logging under pumping
conditions commenced after the borehole water level had stabilized. HPF logging was conducted at
every 5 feet throughout the logging intervals under ambient and pumping conditions. More closely
spaced readings were then conducted at sections with abrupt changes in flow. A summary of the
configuration of the borehole, pumping rates, and water levels is provided below. All depth
measurements are referenced from the ground surface. All wells are surface cased and open hole
below the casing.
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report, Bear Leah Trail Site
Arden, North Carolina (synt00215)
Logging Configuration Summary
March 7, 2016
Page 4
Well ID:
DW-3
DW-4
DW-5
DW-6
DW-7
Bottom of casing (ft):
9.7
21.2
19.2
51.3
49.8
Casing material:
PVC
PVC
Steel
Steel
Steel
Casing diameter (in):
6.2
6.1
6.1
6.1
6.1
Open hole (ft):
9.7-121.5
21.2-180.0
19.2-140.5
51.3-161.5
49.8-102.0
Open hole diameter (in):
6.0
5.9
5.9
5.9
5.9
Logging interval (ft)
5.0-121.0
15.0-179.5
7.0-140.0
47.0-161.0
42.0-101.5
Depth of pump (ft):
9.0
19.0
20.0
18.0
20.0
Pumping rate (gpm):
1.0
1.0
1.5
1.5
1.0
Water level before pumping (ft):
2.0
11.4
7.2
3.4
1.3
Water level at equilibrium (ft):
2.5
11.9
7.8
10.6
2.3
4.0 DATA PROCESSING AND RESULTS
The logs were analyzed for fractures and other features using WellCAD software, manufactured
by Advanced Logic Technology. The travel time data from the acoustic televiewer log was used to
develop a maximum caliper log. Fractures were interpreted through a complete data analysis of all
logs. The logs are presented in Appendix 1 and a fracture summary for each well is provided below.
Dip, azimuth, and aperture were calculated for each detected fracture. The fracture data was
corrected from apparent to true dip and azimuth (dip direction) using deviation logs included with
the televiewer dataset. The azimuth or dip direction is measured clockwise from magnetic north
(Figure 1). Attributes for all identified fractures for the wells are listed in the tables following this
section. Dominating water producing fractures based on flow logging are highlighted and shown in
bold and italics text. Minor water producing fractures based on flow logging are shown in bold.
Fracture rose diagrams are presented on Appendix 2. HPF logs and fracture characteristics are shown
on Appendix 3. All depths are referenced from ground surface.
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report, Bear Leah Trail Site
Arden, North Carolina (synt00215)
[inert
.halt
Relati ns betrnen Do andA::, ntb angle
Figure 1 Explanation of azimuth and dip for fractures
March 7, 2016
Page 5
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report, Bear Leah Trail Site
Arden, North Carolina (synt00215)
DW-3 Fracture Summary
Depth
Azimuth
Dip
Aperture
ft
deg
deg
mm
9.9
284
44
4
10.5
278
15
169
10.8
308
65
5
11.5
269
58
6
12.9
80
34
10
14.6
170
4
8
30.3
165
21
35
31.5
159
14
410
36.9
176
73
2
46.2
128
56
3
56.7
2
7
8
57.1
3
6
10
61.0
206
13
145
64.1
170
10
8
64.3
175
6
8
77.3
1
13
12
83.5
158
12
8
83.6
155
12
8
101.3
346
22
7
105.5
101
3
12
113.8
141
15
16
Note: Surficial water was apparently entering the
well immediately below the casing in well DW-3
during pumping.
March 7, 2016
Page 6
DW-4 Fracture Summary
Depth
Azimuth
Dip
Aperture
ft
deg
deg
mm
21.3
349
11
38
24.8
173
58
6
25.2
179
35
6
25.4
160
34
9
27.2
194
49
18
27.7
169
21
7
27.8
165
35
9
29.3
21
15
5
29.6
42
14
5
29.9
110
15
17
31.1
156
19
284
32.5
143
28
4
33.7
160
21
69
35.1
137
31
68
43.0
101
20
19
43.0
227
25
5
46.2
81
79
1
46.2
95
77
4
49.3
179
45
6
51.0
234
73
4
51.0
196
55
12
55.6
209
8
125
57.1
239
52
7
59.9
211
46
6
65.4
325
4
98
81.6
348
4
62
85.2
156
43
10
85.5
175
21
36
86.5
159
25
15
89.1
193
25
8
102.7
151
33
15
124.4
131
54
7
141.9
154
2
8
145.3
346
19
9
Dominating water producing fractures based on flow logging are highlighted and shown in bold and
italics text. Minor water producing fractures based on flow logging are shown in bold.
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report, Bear Leah Trail Site
Arden, North Carolina (synt00215)
DW-5 Fracture Summary
Depth
Azimuth
Dip
Aperture
ft
deg
deg
mm
38.5
193
61
6
39.4
307
7
4
43.3
175
59
7
59.4
196
35
7
61.4
142
41
8
70.7
209
61
3
93.8
152
23
4
94.3
174
42
9
108.8
158
40
6
109.6
155
56
5
114.1
152
39
35
114.2
242
5
120
118.6
146
22
4
118.9
63
18
4
120.1
23
6
7
120.4
41
3
17
133.0
165
46
6
135.7
168
23
7
136.1
37
2
3
136.1
167
5
1
March 7, 2016
Page 7
DW-6 Fracture Summary
Depth
Azimuth
Dip
Aperture
ft
deg
deg
mm
51.6
294
27
14
57.7
173
18
6
58.0
152
25
6
58.6
160
24
7
59.2
8
46
5
59.8
176
17
9
65.2
187
22
7
67.8
181
25
68
71.4
148
11
10
73.5
214
9
7
87.0
150
27
5
87.2
158
37
12
94.0
181
21
21
94.3
164
36
19
94.6
167
43
13
94.8
169
42
22
98.6
163
37
13
98.7
154
44
7
99.5
155
68
15
99.6
159
38
20
107.0
141
63
7
107.1
156
43
11
114.2
192
48
5
116.0
155
12
23
126.1
22
14
10
147.5
148
32
5
150.1
122
38
7
151.5
138
48
4
159.2
162
58
6
159.6
176
47
10
160.1
165
47
3
160.4
154
43
4
Dominating water producing fractures based on flow logging are highlighted and shown in bold and
italics text. Minor water producing fractures based on flow logging are shown in bold.
GEL Geophysics u_C Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
Geophysical Logging Report, Bear Leah Trail Site March 7, 2016
Arden, North Carolina (synt00215) Page 8
DW-7 Fracture Summary
Depth
Azimuth
Dip
Aperture
Depth
Azimuth
Dip
Aperture
ft
deg
deg
mm
ft
deg
deg
mm
49.8
119
4
12
74.4
168
16
9
53.0
146
21
5
74.8
160
18
7
53.7
229
17
4
77.0
134
23
7
54.3
152
27
5
78.4
145
38
7
55.3
129
14
4
78.7
143
60
5
56.7
119
31
4
79.5
159
66
7
57.0
122
23
8
80.0
159
62
8
57.2
150
24
9
80.5
152
46
6
57.5
136
31
15
80.7
150
51
6
57.7
110
32
30
80.7
145
70
7
58.1
179
19
37
81.1
157
57
6
58.6
187
27
10
83.0
152
58
2
59.4
160
24
6
84.9
173
10
9
60.6
158
25
4
85.3
162
13
6
61.6
125
44
47
86.3
198
23
6
61.7
76
9
49
89.1
161
26
6
63.0
3
17
11
89.2
166
33
9
67.0
7
7
5
90.4
221
13
5
67.3
79
15
5
90.5
206
19
7
67.6
116
15
11
91.3
204
36
7
72.6
140
33
9
92.3
201
24
10
72.7
140
37
7
92.4
187
25
6
73.1
141
26
6
92.7
188
29
5
93.1
200
24
3
Note: Surficial water was apparently entering the
well immediately below the casing in well DW-7 during
pumping.
Dominating water producing fractures based on flow logging are highlighted and shown in bold and
italics text. Minor water producing fractures based on flow logging are shown in bold.
GEL Geophysics LLC Charleston, SC Charlotte, NC Raleigh, NC Atlanta, GA www.gelgeophysics.com
APPENDIX I
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Depth ATV - Amplitude ATV - Traveltime Caliper SPR Temperature
1ft:10ft 0° 90' 180' 270° 0° 0° 90' 180' 270° 0° 5.8 in 6.4 1000 Ohms 6000 14.4 deg C 14.8
Caliper- max from ATV SP F-Res
5.8 in 6.8 -50 mV 50 20 Ohm-m 40
Fractures HPF - Ambient
0° 90' 180' 270' 0° -0.1 0.1
HPF - Pumping
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Page 18
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0• el• :00• 1' 1' e0• :0• 0• 5.8 in 6 1000 Ohms 6000 20 • 0
Caliper - max from ATV SP Temperature
00 mV 50 14.4 deg
Fractures HPF - Ambient
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Page 1
Depth Y Y
Ift 1• •I• :1' 0• I' I• •/• :1• 0• 1• 5.8 in 6 1000 Ohms .III 20 • 41
Caliper - max from ATV SP Temperature
11 mV 50 14.4 deg
Fractures HPF - Ambient
I' •I• :1' 1• I• -0.03 gpm 0.02
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Page 2
Depth
Ift 1' •I• 180.0• I' I' •/• :1' 1' 5.8 in 6 1000 Ohms .III 20 • I
Caliper - max from ATV SP Temperature
11 mV 50 14.4 deg
Fractures HPF - Ambient
I• •I• :1' 1• I• -0.03 gpm 0.02
1 gpm 1
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Page 3
Depth
0• 91• 180.0• 1' 1' 90• :0• 0• 5.8 in 6 1000 Ohms 6000 20 • 0
Caliper - max from ATV SP Temperature
00 mV 50 14.4 deg
Fractures HPF - Ambient
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0 gpm 0
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Page 4
DepthATV Amplitude ATV Travel - Caliper
0• 91• 180.0• 1' 1' 90• :0• 0• 5.8 in 6 1000 Ohms 6000 20 • 0
Caliper - max from ATV SP Temperature
00 mV 50 14.4 deg
Ambient0•
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Page 5
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Page 8
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Depth
1ft 1' 91• 180.1• 1' 1' 91• :1' 1' 1• 5.8 in 6 1000 Ohms 600 1 • 41
Caliper - max from ATV SP Temperature
11 mV 50 14.4 deg
Fractures HPF - Ambient
1' 0' :1' 1• 1• -0.03 gpm 0.02
Pumping
1 gpm 1
—76 1
,r�,.
l■
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Page 10
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Depth ATV - Amplitude ATV - Traveltime Caliper SPR F-Res
1ft:10ft 0. 90' 180' 270° 0° 0° 90' 180' 270° 0° 5.8 in 6 1000 Ohms 6000 20 Ohm-m 40
Caliper - max from ATV SP Temperature
5.8 in 6.8 -100 mV 50 14.4 deg C 14.8
Fractures HPF - Ambient
0° 90' 180' 270' 0° -0.03 gpm 0.02
HPF - Pumping
0 gpm 0.5
41.
Page 20
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Depth ATV - Amplitude ATV - Traveltime Caliper SPR Temperature
Caliper - max from ATV SP F-Res
Fractures HPF-Ambient
I'kl'.
.101,
17-
MEMO
WENEMKIIE1011
1
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Page 5
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Depth ATV - Amplitude ATV - Traveltime Caliper SPR Temperature
Caliper - max from ATV SP F-Res
Fractures HPF-Ambient
MOSM
11
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Page 11
Depth ATV - Amplitude ATV - Traveltime Caliper SPR Temperature
Caliper - max from ATV SP F-Res
Fractures HPF-Ambient
Emil
low
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Page 15
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Caliper - max from ATV SP F-Res
:0 mV :0 20 •
HPF-Ambient
PumpingFractures
0 gpm 0
r It ` ,�
1
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Page 18
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Page 8
M I .
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ti
APPENDIX 2
Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 0 901 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
0
Azimuth -Absolute (Count)
Depth: 2.13 [ft] to 123.03 [ft]
0°
Dip Count -Absolute (Count)
25
Depth: 1.80 [ft] to 123.52 [ft]
50
0°
4
A
Well ID:
DW-3
75
8-10
Counts: 21.00
Mean (3D): 3.88
100
180,
Min: 3.32
Components: Azimuth
Max: 73.04
Counts: 21.00
Mean (3D): 189.38
125
Min: 1.35
Max: 346.39
150
175
200
Page 1
Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 1 0 901 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
2540
Azimuth -Absolute (Count)
Depth: 7.55 [ft] to 160.43 [ft]
0°
Dip Count -Absolute (Count)
50
Depth: 7.87 [ft] to 160.93 [ft]
4
0.
Well ID:
DW-4
75
5 6
6
100
8
Counts: 34.00
Mean (3D): 21.01
180'
Min: 1.71
125
Components: Azimuth
Max: 79.23
Counts: 34.00
Mean (3D): 169.26
Min: 21.22
15 0
Max: 349.45
175
Page 1
Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 0 901 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
25
Azimuth -Absolute (Count)
Depth: 7.55 [ft] to 160.43 [ft]
0°
41
01
Dip Count -Absolute (Count)
50
4
Depth: 7.87 [ft] to 160.93 [ft]
0°
Well ID:
DW-5
75
4 5
A*-4
100
Counts: 20.00
Mean (3D): 25.15
180°
Min: 1.99
125
Components: Azimuth
Max: 61.04
Counts: 20.00
Mean (3D): 167.26
Min: 23.17
150
Max: 306.75
175
Page 1
Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 0 901 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
25
Azimuth -Absolute (Count)
Depth: 7.55 [ft] to 170.28 [ft]
0°
Dip Count -Absolute (Count)
50
/
Depth: 7.87 [ft] to 170.60 [ft]
b
0o Well ID:
10 DW-6
75
78
100
— —8-10
Counts: 32.00
Mean (3D): 31.37
125
180'
Min: 9.07
Components: Azimuth
Max: 67.52
Counts: 32.00
Mean (3D): 160.63
150
Min: 7.51
Max: 293.68
175
Page 1
Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:200ft 0 901 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
40
50
Azimuth -Absolute (Count)
Depth: 38.58 [ft] to 109.99 [ft]
0°
Dip Count -Absolute (Count)
60
Depth: 38.52 [ft] to 110.25 [ft]
5
0° Well ID:
1 DW-7
1
70
78
80-
- ,1Z16
Counts: 47.00
Mean (3D): 24.63
180'
Min: 3.79
90
Components: Azimuth
Max: 70.46
Counts: 47.00
Mean (3D): 154.73
Min: 2.63
100
Max: 229.43
110
Page 1
APPENDIX 3
Depth Caliper Fractures HPF - Ambient
1ft:200ft 5.8 in 6.4 0 90 -0.1 0.1
Caliper - max from ATV HPF - Pumping
5.8 in 6.8 -0.1 gpm 0.1
10.0
2 0 . 0
30.0?
Major open fracture
— Minor open fracture
Closed fracture
40.0
50.0
Well ID:
DW-3
60.0
70.0
80.0
90.0
00.
10.
20.
Page 1
Depth Caliper Fractures HPF - Pumping
1ft:240ft 5.8 in 6.2 0 90 0 gpm 0.6
Caliper - max from ATV HPF - Ambient
5.8 in 6.8 -0.1 gpm 0.1
20.0—
30.0
40.0
50.0
60.0
70.0—
80.0
18,
Major open fracture
Minor open fracture
• Closed fracture
Well ID:
DW-4
90.0
00.
10.
20.
30.
40.
150.
60.
70.
Page 1
Depth Caliper Fractures HPF - Ambient
1ft:200ft 5.8 in 6.4 0 90 -0.03 9pm 0.02
Caliper - max from ATV HPF - Pumping
5.8 in 6.8 0 gpm 1
—20.0--71
30.0
40.0
50.0
60.0
70.0
Well ID:
DW-5
80.0
90.0
00.
3&7
10.
20.
30. 0
Major open fracture
Minor open fracture
Closed fracture
40.
Page 1
Depth Caliper Fractures HPF-Ambient
1ft:200ft 5.8 in 6.4 0 90 0 gpm 0.02
Caliper - max from ATV HPF - Pumping
5.8 in 6.8 0 gpm 0.7
50.0
60.0
70.0
80.0
Well ID:
DW-6
90.0
00 .
Major open fracture
Minor open fracture
( Closed fracture
10.
20.
10
30.
40.
50.
60.
Page 1
Depth Caliper Fractures HPF - Ambient
1ft:120ft 5.8 in 6.4 0 90 0 9pm 0.04
Caliper - max from ATV HPF - Pumping
5.8 in 6.8 0 gpm 0.8
A
—SO.0—
60.0
70.0
80.0
Well ID:
DW-7
Major open fracture
Minor open fracture
_
Closed fracture
AL
90.0
00.
Page 1