American Oil & Gas Reporter - December 2011 - 71

SpecialReport: Permian Basin Activity Update
the Atoka and Fusselman formations in addition to the Spraberry, Dean and Wolfcamp. LINN is drilling down through the Atoka zone on the west side. “The cost to drill the additional footage is so small, it makes economic sense to tap the additional deeper formations,” he reports. Walker points out that LINN is completing the wells with eight to 11 frac stages. “Vertical wells make sense in the Wolfberry because the interval–including all the different zones–is a 3,000-foot section,” he states. He adds that LINN Energy is keeping an eye on horizontal drilling in the Wolfcamp, where other companies have been drilling horizontal wells in Upton County, Tx. He says the trend seems to be moving north toward the Midland/Odessa area. “I started my career in Midland,” he recalls. “We were drilling Spraberry wells in the 1980s, and some areas were not that great. These same areas are where we now are drilling the Wolfberry. Commingling the various zones with hydraulic fracturing technology has produced good economical wells.” On the rest of LINN’s Permian acreage, the company is operating waterfloods that Walker asserts are critical to his company’s operations. He says a Permian Basin waterflood typically provides additional production of about 10 percent of the oil in place. “Our business model takes a twopronged approach to acquisitions,” says Walker. “We purchase low-decline oil and natural gas fields that provide stable production. This gives us the flexibility to take on higher-rate-of-return organic projects such as the Permian Wolfberry and Mid-Continent Granite Wash. This strategic approach, combined with our hedging strategy, has helped us grow the company to an enterprise value of approximately $10 million–placing LINN among the top-20 largest independent E&P companies. Throughout that growth, the company has paid consecutive quarterly distributions to our unit holders since our initial public offering in 2006.” r

ROZ: Huge New Target for CO2 EOR
Unconventional tight liquids plays are generating a lot of buzz in the Permian Basin, but beneath the main pay zone intervals are potentially enough oil reserves to rival what has been produced throughout the basin’s entire 80-year history of drilling and development. Historically, the industry viewed the zones beneath oil/water contacts (OWCs) as “transitional zones,” and fearing large water volumes, avoided drilling into these zones. Consequently, Permian Basin drilling, production and EOR activities have been concentrated within the main pay zone overlying the OWC. However, even while growth is continuing in main pay zone intervals across the basin, the residual oil zone (ROZ) now is recognized as a huge new target for enhanced oil recovery using carbon dioxide flooding. A residual oil zone is defined as an interval that produces water and noncommercial quantities of oil on primary or secondary recovery, but has immobile residual oil present. Similar to applying CO2 tertiary recovery to residual oil targets left behind after secondary waterflooding in the main pay zone, carbon dioxide injection is being used to sweep residual oil from below the OWC, where the ROZ is naturally waterflooded. A 2006 U.S. Department of Energy study prepared by Advanced Resources International identified 56 fields in five major Permian Basin oil plays with potential for significant ROZ resources. The original oil in place in the ROZs in these 56 fields is estimated at 30.7 billion barrels, which is nearly equal to the original oil in place in the fields’ main pay zone intervals that the industry has been producing for eight decades. Based on reservoir modeling of applying CO2 EOR, at least 11.9 billion barrels of this ROZ resource is considered technically recoverable To date, nine ROZ CO2 projects have been established in Texas and New Mexico by five operators, demonstrating the commerciality of ROZ CO2 tertiary flooding. Preliminary investigations suggest significant ROZs also are present in other basins across the country, although the commerciality of developing those reserves has not yet been demonstrated. r Information sources: Melzer Consulting, Advanced Resources International, and the Center for Energy & Economic Diversification at the University of Texas of the Permian Basin.

Active CO2 Miscible ROZ Floods in the Permian Basin
Operator Chevron Fasken Hess Hess Hess Legado Occidental Occidental Occidental Field Vacuum San Andres Grayburg Unit Hanford Seminole Unit-ROZ Phase 1 Seminole Unit-ROZ Phase 2 Seminole Unit-ROZ Stage 1 Full Field Dev Goldsmith-Landreth Unit Wasson Bennett Ranch Unit Wasson Denver Unit Wasson ODC State NM TX TX TX TX TX TX TX TX County Lea Gaines Gaines Gaines Gaines Ector Yoakum Yoakum Yoakum/Gaines Top MPZ Depth (ft) 4,550 5,500 5,500 5,500 5,500 4,200 5,250 5,200 5,200 Pay Zone San Andres/Grayburg San Andres San Andres San Andres San Andres San Andres San Andres San Andres San Andres

DECEMBER 2011 71



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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