American Oil & Gas Reporter - December 2011 - 109

SpecialReport: Well Stimulation & Completion Technology
scheduling to affect the created fracture network. The fracture treatment pressure match results indicate a stimulated reservoir volume of 169 million cubic feet for Well A and 321 million cubic feet for Well B. Well A did not have excessive sweep stages within the fracture treatment and Well B had a sweep after every proppant stage. Well B sweep stages accounted for 10 percent more fluid volume than in Well A. Since the volume pumped in Well A is 90 percent of Well B, the higher stress and greater vertical depth in Well A probably contributed to the smaller stimulated reservoir volume. However, the larger stimulated reservoir volume in Well B (almost twice that of Well A) probably does not result in greater gas volume being recovered in the Eagle Ford as in other shale plays. The greater production from Well B is not because sweeps were used during the stimulation treatment. The production difference between the two wells is because Well B has a reservoir flow capacity six times greater than Well A, and not because of a greater SRV. Optimizing Conductivity Production simulations for 40/80 lightweight ceramic, 40/70 resin-coated sand and 40/70 uncoated sand were conducted to assess the conductivity of each proppant type under Eagle Ford flowing well conditions. The results confirm a benefit with improved conductivity. Using the history match conductivity of 2.02 mDfoot for the lightweight ceramic, the resin-coated sand conductivity was calculated to be 0.66 mD-foot and the sand conductivity, 0.16 mD-foot. Well A simulated production rates at three years for ceramic, resin-coated sand and sand proppants are 0.72 MMcf/d, 0.68 MMcf/d and 0.49 MMcf/d, respectively. Cumulative production after three years was predicted to be 1.38 Bcf for the lightweight ceramic, 1.16 Bcf for the resin-coated sand and 0.65 Bcf for uncoated sand. However, conductivity changes also should affect the effective fracture half-length. Therefore, a sensitivity case was run in which the effective fracture half-length was decreased along with conductivity. The flowing lengths for resin-coated sand and natural sand were set at 175 feet and 113 feet, respectively, assuming the effective fracture half of the lightweight ceramic proppant was the full matched 250 feet. As expected, when both conductivity and fracture half-length were changed, production rates at three years for resin-coated sand and sand further decreased to 0.51 MMcf/d and 0.31 MMcf/d, respectively. The cumulative production for Well A after three years for the resin-coated proppant is 0.90 Bcf and 0.46 Bcf for natural sand, equating to 35 and 67 percent less production after three years, respectively, than ceramic proppant. Applying the same methodology to Well B, resin-coated sand conductivity was reduced to 0.49 mD-foot and sand conductivity to 0.12 mD-foot. Well B production rate at three years for ceramic, resin-coated sand and sand proppants are 2.24 MMcf/d, 1.46 MMcf/d and 0.56 MMcf/d, respectively. The cumulative production after three years was predicted to be 3.24 Bcf for the ceramic proppant, 1.79 Bcf for the resin-coated sand and 0.61 Bcf for natural sand. After reducing the effective fracture half length, the flowing lengths for resin-coated sand and natural sand were reduced to 231 and 149 feet, respectively. After changing both conductivity and fracture half lengths, the production rates at three years was 1.30 MMcf/d for resin-coated sand and 0.53 MMcf/d for uncoated sand. Cumulative production after three years for resin-coated sand is 1.66 Bcf and 0.62 Bcf for natural sand, or 49 percent and 81 percent less production after three years, respectively, than ceramic proppant. r

LUCAS W. BAZAN is president of Bazan Consulting Inc. in Houston, focusing on hydraulic fracture design optimization, on-site implementation and post-fracture evaluation of tight gas, coalbed methane and shale reservoirs in both domestic and international locations. He previously served as a completions engineer at ConocoPhillips and BP. He holds a petroleum engineering degree from Texas A&M University and a degree in physics from Texas State University-San Marcos. SAM D. LARKIN is a completion technical adviser for Pioneer Natural Resources in Irving, Tx. He has 33 years of experience in the oil and gas industry. During that time, he has supported well completion and stimulation operations in domestic and international basins for Gulf Oil/Chevron Corp. and Conoco/ConocoPhillips. He has held technical positions in numerous projects requiring hydraulic fracturing as part of well completions. Larkin holds a B.S. in industrial engineering from Texas A&M. MICHAEL G. LATTIBEAUDIERE is the corporate completions manager for Rosetta Resources Inc. in Houston. Prior to joining Rosetta, he was employed at ConocoPhillips with a focus on completion and production engineering positions, both in domestic and international locations. Lattibeaudiere has co-authored technical papers on completions and hydraulic fracturing. He holds a B.S. in petroleum engineering from the University of Texas at Austin.

TERRY T. PALISCH is a director of petroleum engineering with Carbo Ceramics in Irving, Tx. Prior to Carbo, he was employed by ARCO Oil & Gas. His interests include completion and production engineering with particular emphasis on hydraulic fracturing. Palisch serves on the Society of Petroleum Engineers’ Annual Technical Conference & Exhibition Well Completions Technical Subcommittee and the Completions Optimization Technology Award Committee. He holds a B.S. in petroleum engineering from the University of Missouri-Rolla. ROBERT DUENCKEL is director of technical development for Carbo Ceramics. He previously held numerous technical, supervisory and management positions with Marathon Oil Co. Duenckel holds a B.S. in petroleum engineering from the University of Missouri-Rolla. MARK CHAPMAN is a petroleum engineer for Carbo Ceramics, supervising field trials for new technologies and production trends in several unconventional reservoirs. He is involved with operators in the United States, South America, Russia, and China optimizing completion designs through proper proppant selection. Chapman holds a B.S. in petroleum engineering from Missouri University of Science & Technology.

DECEMBER 2011 109



Table of Contents for the Digital Edition of American Oil & Gas Reporter - December 2011

American Oil and Gas Reporter 12/11
Contents
Reports
Calendar
Oil & Gas Counts
State Legislative
Industry Digest
Tech Connections
Washington Watch
Keystone XL
Liaison Committee
Shale Gas Subcommittee
Endangered Species
Midstream Startups Emerging to Meet Booming Demand
Liquids Resource Plays Have Oil Production Rising Again
Organizers Anticipating Big Things for 2012 PBIOS
Cover Story
R&D Areas Key to Improving Fracturing
Natural Gas Offers Solutions as Transportation Fuel
Completion Design, Frac Modeling Optimize Eagle Ford Wells
Novel Drill-In Fluid Excels in Horizontal ERD Wells
Technologies Optimize Sand Control
Operators Must Manage Risk Before, During and After Drilling
OCS Access: BOEM Offers Business-as-Usual OCS Leasing Plan
Court Finds for Insurers in Gulf Spill Ruling
OIPA
Clean Air Act
IOGA NY
COGA
IPAA Annual
Louisiana
West Virginia
Pennsylvania
Texas
The American Well Servicing Directory, Winter 2011
Industry Focus
Classified Advertising
Advertisers Index
American Oil & Gas Reporter - December 2011 - American Oil and Gas Reporter 12/11
American Oil & Gas Reporter - December 2011 - Cover2
American Oil & Gas Reporter - December 2011 - Contents
American Oil & Gas Reporter - December 2011 - Reports
American Oil & Gas Reporter - December 2011 - 5
American Oil & Gas Reporter - December 2011 - 6
American Oil & Gas Reporter - December 2011 - 7
American Oil & Gas Reporter - December 2011 - Calendar
American Oil & Gas Reporter - December 2011 - 9
American Oil & Gas Reporter - December 2011 - 10
American Oil & Gas Reporter - December 2011 - 11
American Oil & Gas Reporter - December 2011 - Oil & Gas Counts
American Oil & Gas Reporter - December 2011 - 13
American Oil & Gas Reporter - December 2011 - Industry Digest
American Oil & Gas Reporter - December 2011 - 15
American Oil & Gas Reporter - December 2011 - 16
American Oil & Gas Reporter - December 2011 - 17
American Oil & Gas Reporter - December 2011 - 18
American Oil & Gas Reporter - December 2011 - 19
American Oil & Gas Reporter - December 2011 - 20
American Oil & Gas Reporter - December 2011 - 21
American Oil & Gas Reporter - December 2011 - 22
American Oil & Gas Reporter - December 2011 - 23
American Oil & Gas Reporter - December 2011 - 24
American Oil & Gas Reporter - December 2011 - 25
American Oil & Gas Reporter - December 2011 - 26
American Oil & Gas Reporter - December 2011 - 27
American Oil & Gas Reporter - December 2011 - 28
American Oil & Gas Reporter - December 2011 - Tech Connections
American Oil & Gas Reporter - December 2011 - 30
American Oil & Gas Reporter - December 2011 - Washington Watch
American Oil & Gas Reporter - December 2011 - Keystone XL
American Oil & Gas Reporter - December 2011 - 33
American Oil & Gas Reporter - December 2011 - Liaison Committee
American Oil & Gas Reporter - December 2011 - 35
American Oil & Gas Reporter - December 2011 - 36
American Oil & Gas Reporter - December 2011 - 37
American Oil & Gas Reporter - December 2011 - Shale Gas Subcommittee
American Oil & Gas Reporter - December 2011 - 39
American Oil & Gas Reporter - December 2011 - Endangered Species
American Oil & Gas Reporter - December 2011 - 41
American Oil & Gas Reporter - December 2011 - Midstream Startups Emerging to Meet Booming Demand
American Oil & Gas Reporter - December 2011 - 43
American Oil & Gas Reporter - December 2011 - 44
American Oil & Gas Reporter - December 2011 - 45
American Oil & Gas Reporter - December 2011 - 46
American Oil & Gas Reporter - December 2011 - 47
American Oil & Gas Reporter - December 2011 - 48
American Oil & Gas Reporter - December 2011 - 49
American Oil & Gas Reporter - December 2011 - 50
American Oil & Gas Reporter - December 2011 - 51
American Oil & Gas Reporter - December 2011 - 52
American Oil & Gas Reporter - December 2011 - 53
American Oil & Gas Reporter - December 2011 - 54
American Oil & Gas Reporter - December 2011 - 55
American Oil & Gas Reporter - December 2011 - 56
American Oil & Gas Reporter - December 2011 - 57
American Oil & Gas Reporter - December 2011 - Liquids Resource Plays Have Oil Production Rising Again
American Oil & Gas Reporter - December 2011 - 59
American Oil & Gas Reporter - December 2011 - 60
American Oil & Gas Reporter - December 2011 - 61
American Oil & Gas Reporter - December 2011 - 62
American Oil & Gas Reporter - December 2011 - 63
American Oil & Gas Reporter - December 2011 - 64
American Oil & Gas Reporter - December 2011 - 65
American Oil & Gas Reporter - December 2011 - 66
American Oil & Gas Reporter - December 2011 - 67
American Oil & Gas Reporter - December 2011 - 68
American Oil & Gas Reporter - December 2011 - 69
American Oil & Gas Reporter - December 2011 - 70
American Oil & Gas Reporter - December 2011 - 71
American Oil & Gas Reporter - December 2011 - 72
American Oil & Gas Reporter - December 2011 - Organizers Anticipating Big Things for 2012 PBIOS
American Oil & Gas Reporter - December 2011 - Cover Story
American Oil & Gas Reporter - December 2011 - 75
American Oil & Gas Reporter - December 2011 - 76
American Oil & Gas Reporter - December 2011 - 77
American Oil & Gas Reporter - December 2011 - 78
American Oil & Gas Reporter - December 2011 - 79
American Oil & Gas Reporter - December 2011 - 80
American Oil & Gas Reporter - December 2011 - 81
American Oil & Gas Reporter - December 2011 - 82
American Oil & Gas Reporter - December 2011 - R&D Areas Key to Improving Fracturing
American Oil & Gas Reporter - December 2011 - 84
American Oil & Gas Reporter - December 2011 - 85
American Oil & Gas Reporter - December 2011 - 86
American Oil & Gas Reporter - December 2011 - 87
American Oil & Gas Reporter - December 2011 - 88
American Oil & Gas Reporter - December 2011 - 89
American Oil & Gas Reporter - December 2011 - 90
American Oil & Gas Reporter - December 2011 - Natural Gas Offers Solutions as Transportation Fuel
American Oil & Gas Reporter - December 2011 - 92
American Oil & Gas Reporter - December 2011 - 93
American Oil & Gas Reporter - December 2011 - 94
American Oil & Gas Reporter - December 2011 - 95
American Oil & Gas Reporter - December 2011 - Completion Design, Frac Modeling Optimize Eagle Ford Wells
American Oil & Gas Reporter - December 2011 - 97
American Oil & Gas Reporter - December 2011 - 98
American Oil & Gas Reporter - December 2011 - 99
American Oil & Gas Reporter - December 2011 - 100
American Oil & Gas Reporter - December 2011 - 101
American Oil & Gas Reporter - December 2011 - 102
American Oil & Gas Reporter - December 2011 - 103
American Oil & Gas Reporter - December 2011 - 104
American Oil & Gas Reporter - December 2011 - 105
American Oil & Gas Reporter - December 2011 - 106
American Oil & Gas Reporter - December 2011 - 107
American Oil & Gas Reporter - December 2011 - 108
American Oil & Gas Reporter - December 2011 - 109
American Oil & Gas Reporter - December 2011 - 110
American Oil & Gas Reporter - December 2011 - Novel Drill-In Fluid Excels in Horizontal ERD Wells
American Oil & Gas Reporter - December 2011 - 112
American Oil & Gas Reporter - December 2011 - 113
American Oil & Gas Reporter - December 2011 - 114
American Oil & Gas Reporter - December 2011 - 115
American Oil & Gas Reporter - December 2011 - 116
American Oil & Gas Reporter - December 2011 - Technologies Optimize Sand Control
American Oil & Gas Reporter - December 2011 - 118
American Oil & Gas Reporter - December 2011 - 119
American Oil & Gas Reporter - December 2011 - 120
American Oil & Gas Reporter - December 2011 - 121
American Oil & Gas Reporter - December 2011 - Operators Must Manage Risk Before, During and After Drilling
American Oil & Gas Reporter - December 2011 - 123
American Oil & Gas Reporter - December 2011 - 124
American Oil & Gas Reporter - December 2011 - 125
American Oil & Gas Reporter - December 2011 - 126
American Oil & Gas Reporter - December 2011 - 127
American Oil & Gas Reporter - December 2011 - 128
American Oil & Gas Reporter - December 2011 - OCS Access: BOEM Offers Business-as-Usual OCS Leasing Plan
American Oil & Gas Reporter - December 2011 - Court Finds for Insurers in Gulf Spill Ruling
American Oil & Gas Reporter - December 2011 - 131
American Oil & Gas Reporter - December 2011 - 132
American Oil & Gas Reporter - December 2011 - OIPA
American Oil & Gas Reporter - December 2011 - 134
American Oil & Gas Reporter - December 2011 - 135
American Oil & Gas Reporter - December 2011 - Clean Air Act
American Oil & Gas Reporter - December 2011 - 137
American Oil & Gas Reporter - December 2011 - IOGA NY
American Oil & Gas Reporter - December 2011 - 139
American Oil & Gas Reporter - December 2011 - 140
American Oil & Gas Reporter - December 2011 - 141
American Oil & Gas Reporter - December 2011 - 142
American Oil & Gas Reporter - December 2011 - 143
American Oil & Gas Reporter - December 2011 - COGA
American Oil & Gas Reporter - December 2011 - 145
American Oil & Gas Reporter - December 2011 - 146
American Oil & Gas Reporter - December 2011 - IPAA Annual
American Oil & Gas Reporter - December 2011 - 148
American Oil & Gas Reporter - December 2011 - 149
American Oil & Gas Reporter - December 2011 - 150
American Oil & Gas Reporter - December 2011 - 151
American Oil & Gas Reporter - December 2011 - Louisiana
American Oil & Gas Reporter - December 2011 - 153
American Oil & Gas Reporter - December 2011 - 154
American Oil & Gas Reporter - December 2011 - 155
American Oil & Gas Reporter - December 2011 - West Virginia
American Oil & Gas Reporter - December 2011 - 157
American Oil & Gas Reporter - December 2011 - Pennsylvania
American Oil & Gas Reporter - December 2011 - Texas
American Oil & Gas Reporter - December 2011 - 160
American Oil & Gas Reporter - December 2011 - The American Well Servicing Directory, Winter 2011
American Oil & Gas Reporter - December 2011 - 162
American Oil & Gas Reporter - December 2011 - 163
American Oil & Gas Reporter - December 2011 - 164
American Oil & Gas Reporter - December 2011 - 165
American Oil & Gas Reporter - December 2011 - 166
American Oil & Gas Reporter - December 2011 - 167
American Oil & Gas Reporter - December 2011 - 168
American Oil & Gas Reporter - December 2011 - 169
American Oil & Gas Reporter - December 2011 - 170
American Oil & Gas Reporter - December 2011 - 171
American Oil & Gas Reporter - December 2011 - 172
American Oil & Gas Reporter - December 2011 - 173
American Oil & Gas Reporter - December 2011 - 174
American Oil & Gas Reporter - December 2011 - 175
American Oil & Gas Reporter - December 2011 - 176
American Oil & Gas Reporter - December 2011 - 177
American Oil & Gas Reporter - December 2011 - 178
American Oil & Gas Reporter - December 2011 - 179
American Oil & Gas Reporter - December 2011 - 180
American Oil & Gas Reporter - December 2011 - 181
American Oil & Gas Reporter - December 2011 - 182
American Oil & Gas Reporter - December 2011 - 183
American Oil & Gas Reporter - December 2011 - 184
American Oil & Gas Reporter - December 2011 - 185
American Oil & Gas Reporter - December 2011 - Industry Focus
American Oil & Gas Reporter - December 2011 - 187
American Oil & Gas Reporter - December 2011 - 188
American Oil & Gas Reporter - December 2011 - 189
American Oil & Gas Reporter - December 2011 - 190
American Oil & Gas Reporter - December 2011 - 191
American Oil & Gas Reporter - December 2011 - Classified Advertising
American Oil & Gas Reporter - December 2011 - 193
American Oil & Gas Reporter - December 2011 - Advertisers Index
American Oil & Gas Reporter - December 2011 - Cover3
American Oil & Gas Reporter - December 2011 - Cover4
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