American Oil and Gas Reporter - January 2012 - 92
Lessons Learned
The LWD log responses observed for
the wells targeting the Bakken Middle
92 THE AMERICAN OIL & GAS REPORTER
Member were characterized in a similar
fashion as the Three Forks wells. The 15foot thick target interval below the tight
limestone maintains consistent, nondescript
gamma ray and resistivity characteristics
below the limestone, continuing down to
the lower Bakken Shale.
The lack of character through the lower
half of the Middle Member formation
presents a challenging interpretation.
Therefore, the cleaner gamma ray and
slightly higher resistivity of the limestone
directly above the target interval are
utilized as benchmarks to solidify the
geosteering interpretation.
The resistivity measurements begin to
separate and increase according to their
respective diameters of investigation as
the well bore approaches the contrast in
resistivity between the target interval and
FIGURE 5A
Real-Time Structural Interpretation Conducted at the Well Site
(Middle Bakken Formation)
OHMM
OHMM
Vertical Depth Correlation
10,860
Real-Time Resistivity
API
RT_RHTE
RSPH_A
10
RMPH_A
RDPH_A
RDAL_A
Real-Time Resistivity Measurements
OHMM
RT_RHTE
Modeled Resistivity Response
Modeled Resistivity
10,890
RSPH_M
100
RMPH_M
RDPH_M
10,920
GRC_S
RVD
Gamma Ray
120
SLBD_A
GRCA_A
90
ROP_A
60
Real-Time Gamma Ray (Green) versus Modeled Gamma Ray & ROP
30
10,950
0
10,840 feet
ActualW
ActualW
10,880
10,980
Upper Bakken
10,920
Middle Member target
interval identified by red lines
TVD
11,010
Well Bore Trajectory
10,960
11,000
Real-Time PZS Structural Interpretation
Landing Pl.
11,040
11,040
Lower Bakken
0
30 60 90 120
Gamma Ray
1
10
Resistivity
11,000
100
12,000
13,000
14,000
15,000
MD
16,000
17,000
18,000
19,000
feet
FIGURE 5B
Correlation Displaying LWD Measurements Character
As Utilized for Geosteering Decisions
API
OHMM
OHMM
Real-Time Resistivity
Upper Bakken
11,000
RT_RHTE
RMPH_A
10
RDPH_A
RDAL_A
RSPH_A
Real-Time Resistivity Measurements
OHMM
11,005
RT_RHTE
Modeled Resistivity
RSPH_M
100
11,010
RMPH_M
RDPH_M
Modeled Resistivity Response
GRC_S
Gamma Ray
120
11,015
RVD
SLBD_A
GRCA_A
90
ROP_A
60
Real-Time Gamma Ray (Green) versus Modeled Gamma Ray & ROP
30
0
10,970 feet
11,020
10,960
11,025
ActualW
ActualW
Middle Member target
interval identified by red lines
10,990
11,000
TVD
Figure 2 displays the prewell geologic
model with the anticipated logging response
along the proposed well path.
After drilling vertically to 8,300 feet
total depth, the PZS service was initiated
to complement geological and mud logging
information for picking the kickoff point.
Building the curve started at 9,280 feet,
using a 2.5-degree bend, PathFinder G2
mud motor, an 83⁄4-inch PDC bit, and 63⁄4inch gamma ray logging and directional
tools. The real-time geosteering technology
was managed by an experienced field engineer on site. Prewell modeling, remote
support during operations, and post-well
analysis were performed in Lafayette, La.
Formation changes were logged and
observed differences to the original model
were used to compute adjustments to
revise the landing point. At an angle close
to horizontal, the well successfully entered
the target zone at 9,805 feet TVD (10,096
feet TD) to reach the 9,808-foot TVD revised landing point, 2.5 feet below the
top of the target clean dolomite within
the Three Forks formation. This compares
with a planned landing point based on
the initial model at 9,815 feet TVD (seven
feet deeper).
Seven-inch casing was set to 10,202
feet, then the lateral producing section
was drilled using a 6-inch PDC bit, 1.5degree adjustable steerable G2 mud motor,
slim (43⁄4 inches) advanced wave propagation resistivity and gamma ray logging
tool, and an MWD positive pulse telemetry
system. While drilling the lateral, the
geosteering field engineer used real-time
gamma ray, resistivity, and directional
data, combined with geological information
from mud logging, to advise NPE on
steering the well within the planned objective, following the dip of the formation
(Figure 3).
The inclination of the lateral ranged
between 89 and 93 degrees, reacting to
the regional dip changes. Accurate well
positioning was achieved by characterizing
measured gamma ray and resistivity response differences between the top and
the base of the Three Forks formation
target interval.
At the top of the target interval, the resistivity is higher with more separation, in
combination with slightly lower gamma
ray measurements at the top versus the
base (Figure 4). Well total depth was
achieved at 17,739 feet MD, 9,725 feet
TVD. Of the 7,643 feet of lateral footage
drilled, 7,214 feet (94.4 percent) of the
well bore was positioned within the target
interval.
11,030
Well Bore Trajectory
11,010
11,020
Real-Time PZS Structural Interpretation
11,035
Lower Bakken
Vertical Depth Correlation
11,030
11,040
0
30 60 90 120
Gamma Ray
1
10
Resistivity
100
13,000
13,500
14,000
14,500
MD
15,000
15,500
16,000
feet
American Oil and Gas Reporter - January 2012
Table of Contents for the Digital Edition of American Oil and Gas Reporter - January 2012
The American Oil and Gas Reporter - January 2012
Contents
Reports
Calendar
Oil & Gas Counts
State Legislative
Industry Digest
Tech Connections
Washington Watch
Federal Legislation
EPA
Gulf of Mexico
Resource Plays Providing Wealth of Opportunities
Tight Plays Poised to Transform U.S. Crude Supply
El Paso Project Optimizes Eagle Ford Completion Design
Real-Time Forward Modeling Improves Bakken Horizontals
Cover Story
Financial Firms Expand Oil and Gas Divisions
Multicomponent 3-D Poised for Growth in Shale Plays
Cloud Computing Driving Business Step Changes
Advanced Attributes Improve 3-D Interpretation
3-D Data Improve Knowledge of Shale Heterogeneity
HBUR RSS Solves Granite Wash Drilling Challenges
Technologies Improve Production Consistency in Resource Plays
SaaS Helps Operator Streamline Data Management
Automation Enhances Operations in Challenging Applications
Dispersant Chemistry Combats Plugging in Low-Gravity Oil Wells
New Technologies Optimize Production
PIOGA
Drilling Regs
IOGAWV
The Presidential Papers
Energy Education
Conventions
Shale Gas
New Lits & Products
Computer Currents
Industry Focus
Classified Advertising
Advertisers Index
American Oil and Gas Reporter - January 2012 - The American Oil and Gas Reporter - January 2012
American Oil and Gas Reporter - January 2012 - 2
American Oil and Gas Reporter - January 2012 - 3
American Oil and Gas Reporter - January 2012 - 4
American Oil and Gas Reporter - January 2012 - Contents
American Oil and Gas Reporter - January 2012 - Reports
American Oil and Gas Reporter - January 2012 - 7
American Oil and Gas Reporter - January 2012 - 8
American Oil and Gas Reporter - January 2012 - 9
American Oil and Gas Reporter - January 2012 - Calendar
American Oil and Gas Reporter - January 2012 - 11
American Oil and Gas Reporter - January 2012 - 12
American Oil and Gas Reporter - January 2012 - 13
American Oil and Gas Reporter - January 2012 - Oil & Gas Counts
American Oil and Gas Reporter - January 2012 - 15
American Oil and Gas Reporter - January 2012 - Industry Digest
American Oil and Gas Reporter - January 2012 - 17
American Oil and Gas Reporter - January 2012 - 18
American Oil and Gas Reporter - January 2012 - 19
American Oil and Gas Reporter - January 2012 - 20
American Oil and Gas Reporter - January 2012 - 21
American Oil and Gas Reporter - January 2012 - 22
American Oil and Gas Reporter - January 2012 - 23
American Oil and Gas Reporter - January 2012 - 24
American Oil and Gas Reporter - January 2012 - Tech Connections
American Oil and Gas Reporter - January 2012 - 26
American Oil and Gas Reporter - January 2012 - Washington Watch
American Oil and Gas Reporter - January 2012 - Federal Legislation
American Oil and Gas Reporter - January 2012 - 29
American Oil and Gas Reporter - January 2012 - 30
American Oil and Gas Reporter - January 2012 - 31
American Oil and Gas Reporter - January 2012 - 32
American Oil and Gas Reporter - January 2012 - 33
American Oil and Gas Reporter - January 2012 - 34
American Oil and Gas Reporter - January 2012 - 35
American Oil and Gas Reporter - January 2012 - EPA
American Oil and Gas Reporter - January 2012 - 37
American Oil and Gas Reporter - January 2012 - 38
American Oil and Gas Reporter - January 2012 - 39
American Oil and Gas Reporter - January 2012 - 40
American Oil and Gas Reporter - January 2012 - 41
American Oil and Gas Reporter - January 2012 - Gulf of Mexico
American Oil and Gas Reporter - January 2012 - 43
American Oil and Gas Reporter - January 2012 - 44
American Oil and Gas Reporter - January 2012 - 45
American Oil and Gas Reporter - January 2012 - 46
American Oil and Gas Reporter - January 2012 - 47
American Oil and Gas Reporter - January 2012 - Resource Plays Providing Wealth of Opportunities
American Oil and Gas Reporter - January 2012 - 49
American Oil and Gas Reporter - January 2012 - 50
American Oil and Gas Reporter - January 2012 - 51
American Oil and Gas Reporter - January 2012 - 52
American Oil and Gas Reporter - January 2012 - 53
American Oil and Gas Reporter - January 2012 - 54
American Oil and Gas Reporter - January 2012 - 55
American Oil and Gas Reporter - January 2012 - 56
American Oil and Gas Reporter - January 2012 - 57
American Oil and Gas Reporter - January 2012 - 58
American Oil and Gas Reporter - January 2012 - 59
American Oil and Gas Reporter - January 2012 - 60
American Oil and Gas Reporter - January 2012 - 61
American Oil and Gas Reporter - January 2012 - Tight Plays Poised to Transform U.S. Crude Supply
American Oil and Gas Reporter - January 2012 - 63
American Oil and Gas Reporter - January 2012 - 64
American Oil and Gas Reporter - January 2012 - 65
American Oil and Gas Reporter - January 2012 - 66
American Oil and Gas Reporter - January 2012 - 67
American Oil and Gas Reporter - January 2012 - 68
American Oil and Gas Reporter - January 2012 - 69
American Oil and Gas Reporter - January 2012 - 70
American Oil and Gas Reporter - January 2012 - 71
American Oil and Gas Reporter - January 2012 - 72
American Oil and Gas Reporter - January 2012 - 73
American Oil and Gas Reporter - January 2012 - 74
American Oil and Gas Reporter - January 2012 - 75
American Oil and Gas Reporter - January 2012 - 76
American Oil and Gas Reporter - January 2012 - El Paso Project Optimizes Eagle Ford Completion Design
American Oil and Gas Reporter - January 2012 - 78
American Oil and Gas Reporter - January 2012 - 79
American Oil and Gas Reporter - January 2012 - 80
American Oil and Gas Reporter - January 2012 - 81
American Oil and Gas Reporter - January 2012 - 82
American Oil and Gas Reporter - January 2012 - 83
American Oil and Gas Reporter - January 2012 - 84
American Oil and Gas Reporter - January 2012 - 85
American Oil and Gas Reporter - January 2012 - 86
American Oil and Gas Reporter - January 2012 - Real-Time Forward Modeling Improves Bakken Horizontals
American Oil and Gas Reporter - January 2012 - 88
American Oil and Gas Reporter - January 2012 - 89
American Oil and Gas Reporter - January 2012 - 90
American Oil and Gas Reporter - January 2012 - 91
American Oil and Gas Reporter - January 2012 - 92
American Oil and Gas Reporter - January 2012 - 93
American Oil and Gas Reporter - January 2012 - Cover Story
American Oil and Gas Reporter - January 2012 - 95
American Oil and Gas Reporter - January 2012 - 96
American Oil and Gas Reporter - January 2012 - 97
American Oil and Gas Reporter - January 2012 - 98
American Oil and Gas Reporter - January 2012 - 99
American Oil and Gas Reporter - January 2012 - 100
American Oil and Gas Reporter - January 2012 - 101
American Oil and Gas Reporter - January 2012 - 102
American Oil and Gas Reporter - January 2012 - Financial Firms Expand Oil and Gas Divisions
American Oil and Gas Reporter - January 2012 - 104
American Oil and Gas Reporter - January 2012 - 105
American Oil and Gas Reporter - January 2012 - 106
American Oil and Gas Reporter - January 2012 - 107
American Oil and Gas Reporter - January 2012 - 108
American Oil and Gas Reporter - January 2012 - 109
American Oil and Gas Reporter - January 2012 - Multicomponent 3-D Poised for Growth in Shale Plays
American Oil and Gas Reporter - January 2012 - 111
American Oil and Gas Reporter - January 2012 - 112
American Oil and Gas Reporter - January 2012 - 113
American Oil and Gas Reporter - January 2012 - 114
American Oil and Gas Reporter - January 2012 - 115
American Oil and Gas Reporter - January 2012 - 116
American Oil and Gas Reporter - January 2012 - 117
American Oil and Gas Reporter - January 2012 - 118
American Oil and Gas Reporter - January 2012 - Cloud Computing Driving Business Step Changes
American Oil and Gas Reporter - January 2012 - 120
American Oil and Gas Reporter - January 2012 - 121
American Oil and Gas Reporter - January 2012 - 122
American Oil and Gas Reporter - January 2012 - 123
American Oil and Gas Reporter - January 2012 - 124
American Oil and Gas Reporter - January 2012 - 125
American Oil and Gas Reporter - January 2012 - Advanced Attributes Improve 3-D Interpretation
American Oil and Gas Reporter - January 2012 - 127
American Oil and Gas Reporter - January 2012 - 128
American Oil and Gas Reporter - January 2012 - 129
American Oil and Gas Reporter - January 2012 - 130
American Oil and Gas Reporter - January 2012 - 131
American Oil and Gas Reporter - January 2012 - 132
American Oil and Gas Reporter - January 2012 - 133
American Oil and Gas Reporter - January 2012 - 134
American Oil and Gas Reporter - January 2012 - 3-D Data Improve Knowledge of Shale Heterogeneity
American Oil and Gas Reporter - January 2012 - 136
American Oil and Gas Reporter - January 2012 - 137
American Oil and Gas Reporter - January 2012 - 138
American Oil and Gas Reporter - January 2012 - 139
American Oil and Gas Reporter - January 2012 - 140
American Oil and Gas Reporter - January 2012 - 141
American Oil and Gas Reporter - January 2012 - 142
American Oil and Gas Reporter - January 2012 - HBUR RSS Solves Granite Wash Drilling Challenges
American Oil and Gas Reporter - January 2012 - 144
American Oil and Gas Reporter - January 2012 - 145
American Oil and Gas Reporter - January 2012 - 146
American Oil and Gas Reporter - January 2012 - 147
American Oil and Gas Reporter - January 2012 - 148
American Oil and Gas Reporter - January 2012 - 149
American Oil and Gas Reporter - January 2012 - 150
American Oil and Gas Reporter - January 2012 - Technologies Improve Production Consistency in Resource Plays
American Oil and Gas Reporter - January 2012 - 152
American Oil and Gas Reporter - January 2012 - 153
American Oil and Gas Reporter - January 2012 - 154
American Oil and Gas Reporter - January 2012 - 155
American Oil and Gas Reporter - January 2012 - 156
American Oil and Gas Reporter - January 2012 - 157
American Oil and Gas Reporter - January 2012 - 158
American Oil and Gas Reporter - January 2012 - 159
American Oil and Gas Reporter - January 2012 - 160
American Oil and Gas Reporter - January 2012 - SaaS Helps Operator Streamline Data Management
American Oil and Gas Reporter - January 2012 - 162
American Oil and Gas Reporter - January 2012 - 163
American Oil and Gas Reporter - January 2012 - 164
American Oil and Gas Reporter - January 2012 - 165
American Oil and Gas Reporter - January 2012 - Automation Enhances Operations in Challenging Applications
American Oil and Gas Reporter - January 2012 - 167
American Oil and Gas Reporter - January 2012 - 168
American Oil and Gas Reporter - January 2012 - 169
American Oil and Gas Reporter - January 2012 - 170
American Oil and Gas Reporter - January 2012 - 171
American Oil and Gas Reporter - January 2012 - 172
American Oil and Gas Reporter - January 2012 - 173
American Oil and Gas Reporter - January 2012 - 174
American Oil and Gas Reporter - January 2012 - 175
American Oil and Gas Reporter - January 2012 - 176
American Oil and Gas Reporter - January 2012 - Dispersant Chemistry Combats Plugging in Low-Gravity Oil Wells
American Oil and Gas Reporter - January 2012 - 178
American Oil and Gas Reporter - January 2012 - 179
American Oil and Gas Reporter - January 2012 - 180
American Oil and Gas Reporter - January 2012 - 181
American Oil and Gas Reporter - January 2012 - New Technologies Optimize Production
American Oil and Gas Reporter - January 2012 - 183
American Oil and Gas Reporter - January 2012 - 184
American Oil and Gas Reporter - January 2012 - 185
American Oil and Gas Reporter - January 2012 - 186
American Oil and Gas Reporter - January 2012 - 187
American Oil and Gas Reporter - January 2012 - 188
American Oil and Gas Reporter - January 2012 - 189
American Oil and Gas Reporter - January 2012 - 190
American Oil and Gas Reporter - January 2012 - 191
American Oil and Gas Reporter - January 2012 - 192
American Oil and Gas Reporter - January 2012 - 193
American Oil and Gas Reporter - January 2012 - PIOGA
American Oil and Gas Reporter - January 2012 - 195
American Oil and Gas Reporter - January 2012 - 196
American Oil and Gas Reporter - January 2012 - 197
American Oil and Gas Reporter - January 2012 - Drilling Regs
American Oil and Gas Reporter - January 2012 - 199
American Oil and Gas Reporter - January 2012 - IOGAWV
American Oil and Gas Reporter - January 2012 - 201
American Oil and Gas Reporter - January 2012 - 202
American Oil and Gas Reporter - January 2012 - 203
American Oil and Gas Reporter - January 2012 - 204
American Oil and Gas Reporter - January 2012 - 205
American Oil and Gas Reporter - January 2012 - 206
American Oil and Gas Reporter - January 2012 - 207
American Oil and Gas Reporter - January 2012 - The Presidential Papers
American Oil and Gas Reporter - January 2012 - 209
American Oil and Gas Reporter - January 2012 - 210
American Oil and Gas Reporter - January 2012 - 211
American Oil and Gas Reporter - January 2012 - 212
American Oil and Gas Reporter - January 2012 - 213
American Oil and Gas Reporter - January 2012 - 214
American Oil and Gas Reporter - January 2012 - 215
American Oil and Gas Reporter - January 2012 - 216
American Oil and Gas Reporter - January 2012 - 217
American Oil and Gas Reporter - January 2012 - 218
American Oil and Gas Reporter - January 2012 - 219
American Oil and Gas Reporter - January 2012 - 220
American Oil and Gas Reporter - January 2012 - 221
American Oil and Gas Reporter - January 2012 - 222
American Oil and Gas Reporter - January 2012 - 223
American Oil and Gas Reporter - January 2012 - 224
American Oil and Gas Reporter - January 2012 - 225
American Oil and Gas Reporter - January 2012 - 226
American Oil and Gas Reporter - January 2012 - 227
American Oil and Gas Reporter - January 2012 - 228
American Oil and Gas Reporter - January 2012 - 229
American Oil and Gas Reporter - January 2012 - 230
American Oil and Gas Reporter - January 2012 - 231
American Oil and Gas Reporter - January 2012 - 232
American Oil and Gas Reporter - January 2012 - 233
American Oil and Gas Reporter - January 2012 - 234
American Oil and Gas Reporter - January 2012 - 235
American Oil and Gas Reporter - January 2012 - 236
American Oil and Gas Reporter - January 2012 - 237
American Oil and Gas Reporter - January 2012 - 238
American Oil and Gas Reporter - January 2012 - 239
American Oil and Gas Reporter - January 2012 - 240
American Oil and Gas Reporter - January 2012 - 241
American Oil and Gas Reporter - January 2012 - 242
American Oil and Gas Reporter - January 2012 - 243
American Oil and Gas Reporter - January 2012 - 244
American Oil and Gas Reporter - January 2012 - 245
American Oil and Gas Reporter - January 2012 - 246
American Oil and Gas Reporter - January 2012 - 247
American Oil and Gas Reporter - January 2012 - 248
American Oil and Gas Reporter - January 2012 - Energy Education
American Oil and Gas Reporter - January 2012 - Conventions
American Oil and Gas Reporter - January 2012 - 251
American Oil and Gas Reporter - January 2012 - Shale Gas
American Oil and Gas Reporter - January 2012 - 253
American Oil and Gas Reporter - January 2012 - 254
American Oil and Gas Reporter - January 2012 - 255
American Oil and Gas Reporter - January 2012 - 256
American Oil and Gas Reporter - January 2012 - 257
American Oil and Gas Reporter - January 2012 - 258
American Oil and Gas Reporter - January 2012 - 259
American Oil and Gas Reporter - January 2012 - New Lits & Products
American Oil and Gas Reporter - January 2012 - 261
American Oil and Gas Reporter - January 2012 - Computer Currents
American Oil and Gas Reporter - January 2012 - 263
American Oil and Gas Reporter - January 2012 - Industry Focus
American Oil and Gas Reporter - January 2012 - 265
American Oil and Gas Reporter - January 2012 - 266
American Oil and Gas Reporter - January 2012 - 267
American Oil and Gas Reporter - January 2012 - 268
American Oil and Gas Reporter - January 2012 - 269
American Oil and Gas Reporter - January 2012 - 270
American Oil and Gas Reporter - January 2012 - 271
American Oil and Gas Reporter - January 2012 - 272
American Oil and Gas Reporter - January 2012 - Classified Advertising
American Oil and Gas Reporter - January 2012 - Advertisers Index
American Oil and Gas Reporter - January 2012 - 275
American Oil and Gas Reporter - January 2012 - 276
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