DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Attachment 2: DI Desktop Long-term Produced Water Generation Rates

Last updated: 3/31/2015

Tab Description

Summary of Results Compilation of the average daily long-term produced water rates in the formations studied.

Detailed Results

Annual long-term produced water volumes and daily average water production in the Bossier 

formation, organized by UOG formation, well trajectory, and well completion year.

Page 1 of 1
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Summary of Results

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

Notes:

10th Percentile Median 90th Percentile

Anadarko tight Cleveland H 0.5 1.9 7.2 571

Anadarko tight Cleveland V 0.2 0.8 4.1 390

Anadarko tight Granite Wash H 0.0 31.6 52.0 273

Anadarko tight Granite Wash V 4.0 11.9 31.4 2,413

Appalachian shale Devonian (Appalachian) V 0.1 0.5 0.8 52

Denver J. tight Muddy J D 1.5 5.4 9.3 3

Denver J. tight Muddy J V 0.2 1.3 11.8 129

Fort Worth shale Barnett V 4.1 5.9 13.8 3,318

Fort Worth shale Barnett H 3.9 21.9 48.5 10,345

Green River shale Hilliard-Baxter-Mancos V 0.1 0.4 7.6 31

Green River shale Hilliard-Baxter-Mancos H 0.4 0.9 1.4 7

Green River tight Lance V 5.9 9.8 13.7 1,050

Green River tight Lance D 8.5 20.5 27.6 1,140

Green River tight Mesaverde (Green River) V 3.3 7.0 14.6 1,081

Green River tight Mesaverde (Green River) D 3.6 4.6 10.5 445

Permian shale Avalon & Bone Spring D 5.3 22.6 57.6 183

Permian shale Avalon & Bone Spring H 0.0 0.0 54.6 37

Permian shale Avalon & Bone Spring V 0.0 22.8 81.0 27

Permian shale Devonian (TX) H 7.4 21.1 42.4 381

Permian shale Devonian (TX) V 3.5 9.5 70.7 162

Permian tight Spraberry V 2.5 20.7 95.9 66

Permian shale Wolfcamp D 0.5 7.5 206.2 259

Permian shale Wolfcamp H 5.0 70.6 453.3 104

Permian shale Wolfcamp V 3.1 21.7 39.3 926

San Juan tight Dakota D 1.0 3.7 8.8 379

San Juan tight Dakota V 0.7 1.6 2.8 6

San Juan tight Mesaverde (San Juan) D 0.3 0.4 6.2 48

TX-LA-MS shale Bossier V 4.4 11.3 25.5 1,203

TX-LA-MS shale Bossier D 3.0 7.7 30.5 253

TX-LA-MS shale Bossier H 14.6 17.9 28.7 25

TX-LA-MS tight Cotton Valley D 15.0 22.7 42.3 1,801

TX-LA-MS tight Cotton Valley V 8.7 15.2 41.8 10,717

TX-LA-MS tight Cotton Valley H 3.2 18.2 63.9 335

TX-LA-MS shale Haynesville H 22.7 40.3 43.8 1,247

TX-LA-MS shale Haynesville V 1.3 4.9 20.3 263

TX-LA-MS tight Tavis Peak H 0.9 4.7 40.3 5

TX-LA-MS tight Tavis Peak V 7.8 23.2 42.4 1,380

Western Gulf tight Austin Chalk H 6.9 17.2 57.7 1,097

Western Gulf tight Austin Chalk V 0.0 0.0 28.0 33

Western Gulf shale Eagle Ford H 0.2 2.5 5.9 498

Western Gulf shale Pearsall H 1.3 4.7 8.7 12

Western Gulf tight Vicksburg V 15.5 24.1 44.3 937

Western Gulf tight Wilcox Lobo H 1.5 8.0 17.6 77

Western Gulf tight Wilcox Lobo V 7.9 14.9 32.6 1,514

Williston shale Bakken H 9.0 16.1 36.1 1,739

Williston shale Bakken V 8.0 23.7 73.4 222

Basin_ERG UOG Formation # of Wells

Well Trajectory Average Daily Long-term Produced Water Rates (bbls/day/well)

Resource Type (i.e., drill type)

Page 1 of 1
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

shale Wolfcamp D 2 1995 0 0 0 0 0 0.0

shale Wolfcamp D 10 1996 9,862 5,981 3,383 3,091 2,597 1.4

shale Wolfcamp D 9 1997 38,156 18,049 35,824 46,829 21,203 9.7

shale Wolfcamp D 7 1998 11,038 8,538 2,999 1,217 980 1.9

shale Wolfcamp D 1 1999 0 414 18 0 0 0.2

shale Wolfcamp D 4 2001 718,351 788,221 1,631,175 1,369,485 86,446 629.3

shale Wolfcamp D 5 2002 219,557 659,302 597,562 393,768 212,251 228.2

shale Wolfcamp D 7 2004 119,514 86,313 72,997 66,056 89,866 34.0

shale Wolfcamp D 8 2005 432,947 476,057 507,131 527,501 317,258 154.9

shale Wolfcamp D 29 2006 21,425 14,671 11,022 10,809 6,880 1.2

shale Wolfcamp D 56 2007 86,601 48,711 42,896 24,052 2.5

shale Wolfcamp D 59 2008 181,730 96,162 58,461 5.2

shale Wolfcamp D 19 2009 524,612 198,532 52.1

shale Wolfcamp D 43 2010 788,875 50.3

shale Wolfcamp H 1 1996 10,848 26,147 11,773 23,894 15,935 48.5

shale Wolfcamp H 9 1997 158,594 204,790 147,131 172,072 215,853 54.7

shale Wolfcamp H 7 1998 44,039 86,119 57,234 37,159 39,102 20.6

shale Wolfcamp H 4 2001 660,476 826,938 913,390 630,252 383,913 467.8

shale Wolfcamp H 9 2002 1,655,025 2,248,921 2,742,673 2,524,584 1,952,179 677.2

shale Wolfcamp H 4 2003 341,470 307,298 556,716 754,537 679,782 361.6

shale Wolfcamp H 1 2004 231,698 341,143 73,922 46,049 28,362 395.2

shale Wolfcamp H 2 2005 532,804 370,242 135,480 166,669 119,444 362.9

shale Wolfcamp H 1 2006 0 0 0 0 0 0.0

shale Wolfcamp H 3 2007 1,702 309 1,525 1,280 1.1

shale Wolfcamp H 21 2008 359,288 340,181 315,589 44.1

shale Wolfcamp H 7 2009 211,782 148,922 70.6

shale Wolfcamp H 35 2010 1,226,242 96.0

shale Wolfcamp V 49 1995 947,527 750,101 634,306 962,516 666,216 44.3

shale Wolfcamp V 63 1996 46,494 61,138 27,934 17,641 15,072 1.5

shale Wolfcamp V 43 1997 98,828 114,758 69,645 35,821 19,914 4.3

shale Wolfcamp V 38 1998 529,837 624,529 572,633 498,328 428,629 38.3

shale Wolfcamp V 16 1999 12,789 13,132 15,321 14,491 10,106 2.3

shale Wolfcamp V 37 2000 59,611 60,875 85,081 38,699 25,071 4.0

shale Wolfcamp V 73 2001 293,606 256,820 561,308 432,512 308,784 13.9

shale Wolfcamp V 48 2002 517,927 655,705 717,114 844,534 552,582 37.5

shale Wolfcamp V 45 2003 555,602 449,620 380,537 266,363 175,046 22.2

shale Wolfcamp V 54 2004 364,883 418,929 320,035 358,941 307,122 18.0

shale Wolfcamp V 57 2005 672,608 770,224 489,879 375,666 278,794 24.9

shale Wolfcamp V 84 2006 3,149,423 1,224,989 751,864 564,624 265,752 38.9

shale Wolfcamp V 113 2007 1,350,372 939,890 783,479 422,612 21.2

shale Wolfcamp V 86 2008 765,182 605,937 375,029 18.5

shale Wolfcamp V 47 2009 674,670 376,718 30.6

shale Wolfcamp V 73 2010 1,058,667 39.7

tight Wilcox Lobo H 1 1996 1,020 207 959 757 73 1.7

tight Wilcox Lobo H 2 2000 1,163 731 1,316 719 1,421 1.5

tight Wilcox Lobo H 1 2001 1,043 872 866 1,046 483 2.4

tight Wilcox Lobo H 1 2002 347 389 376 354 283 1.0

tight Wilcox Lobo H 1 2004 1,863 2,560 1,593 1,616 299 4.3

tight Wilcox Lobo H 6 2005 45,427 22,010 16,579 10,833 5,646 9.2

tight Wilcox Lobo H 8 2006 59,787 32,355 31,169 19,329 11,957 10.6

tight Wilcox Lobo H 9 2007 81,673 34,578 35,117 13,695 12.6

tight Wilcox Lobo H 16 2008 171,709 84,434 52,531 17.6

tight Wilcox Lobo H 12 2009 190,852 90,447 32.1

tight Wilcox Lobo H 20 2010 58,210 8.0

tight Wilcox Lobo V 34 1995 163,843 150,135 132,673 116,066 92,975 10.6

tight Wilcox Lobo V 34 1996 121,095 97,856 101,693 86,622 66,680 7.6

tight Wilcox Lobo V 48 1997 144,036 151,700 159,722 146,716 107,370 8.1

tight Wilcox Lobo V 56 1998 293,180 281,201 203,279 300,086 136,263 11.9

tight Wilcox Lobo V 47 1999 94,588 94,905 86,530 85,723 71,447 5.1

tight Wilcox Lobo V 68 2000 290,029 339,462 1,106,674 3,627,787 2,828,861 66.0

tight Wilcox Lobo V 57 2001 504,429 1,291,193 915,082 711,951 490,879 37.6

tight Wilcox Lobo V 56 2002 301,564 409,999 632,060 849,413 462,613 26.0

tight Wilcox Lobo V 93 2003 291,039 321,413 509,625 788,192 493,502 14.2

tight Wilcox Lobo V 121 2004 789,213 668,390 750,961 601,198 411,563 14.6

tight Wilcox Lobo V 127 2005 906,755 1,345,698 1,834,108 1,071,051 1,237,858 27.6

tight Wilcox Lobo V 187 2006 2,790,896 2,161,392 1,404,678 1,046,737 647,426 23.6

tight Wilcox Lobo V 186 2007 2,328,920 1,530,507 1,167,390 833,549 21.6

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

Page 1 of 8
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

tight Wilcox Lobo V 191 2008 1,730,301 1,326,827 1,030,610 19.5

tight Wilcox Lobo V 98 2009 748,950 334,762 15.1

tight Wilcox Lobo V 111 2010 535,923 13.2

tight Vicksburg V 8 1995 71,025 61,915 75,366 79,743 63,690 24.1

tight Vicksburg V 23 1996 123,725 77,223 119,733 109,595 94,344 12.5

tight Vicksburg V 34 1997 224,826 229,948 237,237 214,682 250,045 18.6

tight Vicksburg V 31 1998 431,037 1,012,129 683,853 507,238 506,092 55.5

tight Vicksburg V 31 1999 385,549 374,523 269,666 249,573 194,684 26.1

tight Vicksburg V 54 2000 1,271,440 1,220,429 1,162,960 940,982 464,216 51.3

tight Vicksburg V 65 2001 848,034 778,857 580,815 528,987 393,657 26.4

tight Vicksburg V 64 2002 483,008 304,572 397,833 477,115 489,489 18.4

tight Vicksburg V 48 2003 228,837 174,114 227,863 237,077 133,808 11.4

tight Vicksburg V 62 2004 639,935 622,660 560,832 540,635 367,746 24.1

tight Vicksburg V 66 2005 719,357 622,552 415,959 301,701 208,503 18.8

tight Vicksburg V 81 2006 1,194,344 709,032 792,348 758,792 593,815 27.4

tight Vicksburg V 80 2007 1,472,338 1,015,851 1,085,459 643,096 36.1

tight Vicksburg V 139 2008 2,633,982 1,884,249 1,145,933 37.2

tight Vicksburg V 98 2009 921,672 524,768 20.2

tight Vicksburg V 53 2010 406,524 21.0

tight Tavis Peak H 2 2006 6,856 3,853 1,916 2,462 2,018 4.7

tight Tavis Peak H 2 2008 62,478 20,206 25,180 49.3

tight Tavis Peak H 1 2009 0 0 0.0

tight Tavis Peak V 39 1995 133,103 107,101 114,406 97,480 65,672 7.3

tight Tavis Peak V 35 1996 50,895 52,470 66,268 49,496 35,281 4.0

tight Tavis Peak V 34 1997 297,105 313,606 507,863 271,204 198,169 25.6

tight Tavis Peak V 43 1998 302,322 286,339 258,771 295,931 203,778 17.2

tight Tavis Peak V 44 1999 190,557 279,966 228,745 147,397 108,394 11.9

tight Tavis Peak V 52 2000 228,278 176,165 168,084 120,946 100,359 8.4

tight Tavis Peak V 51 2001 487,086 270,483 168,918 172,303 106,189 12.9

tight Tavis Peak V 66 2002 332,526 260,248 229,123 244,758 208,204 10.6

tight Tavis Peak V 91 2003 899,391 865,975 731,347 573,655 393,259 20.9

tight Tavis Peak V 93 2004 1,332,561 1,475,343 1,576,191 965,208 590,716 35.0

tight Tavis Peak V 112 2005 1,795,311 1,453,725 1,303,147 913,519 735,358 30.3

tight Tavis Peak V 156 2006 3,118,102 2,151,012 1,601,274 1,199,134 833,610 31.3

tight Tavis Peak V 190 2007 4,622,595 2,583,193 1,994,332 1,345,867 38.0

tight Tavis Peak V 207 2008 6,546,230 3,887,002 2,559,622 57.3

tight Tavis Peak V 115 2009 2,170,028 1,328,867 41.7

tight Tavis Peak V 52 2010 816,662 43.0

tight Spraberry V 4 1995 28,166 30,203 30,401 45,418 33,152 22.9

tight Spraberry V 4 1996 7,795 8,593 7,762 6,492 4,750 4.8

tight Spraberry V 3 1997 1,559 1,459 15,248 28,617 11,806 10.7

tight Spraberry V 2 1998 404,642 437,199 387,349 327,059 332,376 517.4

tight Spraberry V 2 2001 14,910 17,434 9,213 8,278 7,966 15.8

tight Spraberry V 3 2002 0 0 0 0 0 0.0

tight Spraberry V 2 2003 12,780 13,480 14,251 22,811 19,112 22.6

tight Spraberry V 7 2005 238,966 219,333 212,362 193,458 168,427 80.8

tight Spraberry V 3 2006 14,799 18,605 17,066 13,684 29,360 17.1

tight Spraberry V 6 2007 197,492 140,759 258,386 260,420 97.8

tight Spraberry V 8 2008 6,990 4,819 4,664 1.9

tight Spraberry V 7 2009 257,230 192,489 88.0

tight Spraberry V 15 2010 113,579 20.7

shale Pearsall H 1 2000 0 0 0 0 0 0.0

shale Pearsall H 1 2007 2,588 1,707 840 4.7

shale Pearsall H 3 2008 6,494 2,681 1,351 3.2

shale Pearsall H 2 2009 6,508 1,620 5.6

shale Pearsall H 5 2010 19,727 10.8

tight Muddy J D 2 2006 458 475 37 722 303 0.5

tight Muddy J D 1 2008 5,170 3,834 2,282 10.3

tight Muddy J V 2 1995 0 0 211 391 280 0.2

tight Muddy J V 4 1996 12,738 5,325 6,427 11,219 7,284 5.9

tight Muddy J V 6 1997 120,596 105,061 127,575 84,848 67,332 46.2

tight Muddy J V 6 1998 989 768 1,112 713 432 0.4

tight Muddy J V 6 1999 1,352 2,452 1,707 702 1,999 0.7

tight Muddy J V 5 2000 9,475 9,090 13,331 13,951 12,246 6.4

tight Muddy J V 3 2001 202 222 114 57 1,218 0.3

tight Muddy J V 1 2002 108 103 51 51 50 0.2

tight Muddy J V 20 2003 40,270 79,057 75,995 97,538 83,268 10.3

Page 2 of 8
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

tight Muddy J V 6 2004 1,216 637 549 362 422 0.3

tight Muddy J V 1 2005 0 0 0 0 0 0.0

tight Muddy J V 28 2006 95,280 100,855 102,280 95,785 74,223 9.2

tight Muddy J V 14 2007 11,900 9,685 10,606 6,074 1.9

tight Muddy J V 4 2008 0 277 1,103 0.3

tight Muddy J V 12 2009 55,979 60,670 13.3

tight Muddy J V 11 2010 19,663 4.9

tight Mesaverde (San Juan) D 5 2002 1,078 1,151 1,276 1,295 1,488 0.7

tight Mesaverde (San Juan) D 7 2003 887 1,441 782 685 581 0.3

tight Mesaverde (San Juan) D 4 2004 820 520 240 370 480 0.3

tight Mesaverde (San Juan) D 1 2005 270 110 125 41 81 0.3

tight Mesaverde (San Juan) D 9 2006 3,161 1,421 1,227 991 230 0.4

tight Mesaverde (San Juan) D 11 2007 3,708 6,266 2,009 1,078 0.8

tight Mesaverde (San Juan) D 2 2008 0 76 242 0.1

tight Mesaverde (San Juan) D 2 2009 4,534 3,405 5.4

tight Mesaverde (San Juan) D 7 2010 23,353 9.1

tight Mesaverde (Green River) D 20 2006 125,213 169,802 99,414 57,350 29,963 13.2

tight Mesaverde (Green River) D 59 2007 90,510 69,874 94,783 57,784 3.6

tight Mesaverde (Green River) D 128 2008 285,074 206,443 155,955 4.6

tight Mesaverde (Green River) D 96 2009 172,423 84,747 3.7

tight Mesaverde (Green River) D 142 2010 332,117 6.4

tight Mesaverde (Green River) V 50 1995 136,881 121,660 129,385 119,199 97,331 6.6

tight Mesaverde (Green River) V 62 1996 100,663 107,311 102,924 91,709 60,208 4.1

tight Mesaverde (Green River) V 51 1997 163,576 133,337 138,953 139,748 106,658 7.3

tight Mesaverde (Green River) V 31 1998 37,030 32,536 19,735 23,757 16,707 2.3

tight Mesaverde (Green River) V 40 1999 194,157 178,680 194,262 163,122 110,308 11.5

tight Mesaverde (Green River) V 76 2000 172,476 168,962 149,479 136,295 80,120 5.1

tight Mesaverde (Green River) V 90 2001 450,491 621,448 348,621 288,918 215,641 11.7

tight Mesaverde (Green River) V 107 2002 236,579 286,998 183,933 151,732 88,437 4.9

tight Mesaverde (Green River) V 114 2003 243,993 332,827 231,261 239,272 153,764 5.8

tight Mesaverde (Green River) V 130 2004 294,465 285,372 192,004 140,207 91,495 4.2

tight Mesaverde (Green River) V 7 2005 30,648 28,458 16,734 12,367 7,543 7.5

tight Mesaverde (Green River) V 161 2006 836,782 637,805 452,486 356,275 201,294 8.5

tight Mesaverde (Green River) V 82 2007 541,113 608,820 601,019 340,702 17.5

tight Mesaverde (Green River) V 59 2008 1,431,395 1,467,897 1,434,274 67.1

tight Mesaverde (Green River) V 7 2009 7,829 4,834 2.5

tight Mesaverde (Green River) V 14 2010 38,955 7.6

tight Lance D 75 2004 271,569 277,865 231,852 270,143 162,671 8.9

tight Lance D 8 2005 29,267 35,349 22,340 18,909 10,437 8.0

tight Lance D 286 2006 2,959,980 1,992,973 1,555,870 1,355,150 804,329 16.6

tight Lance D 191 2007 2,922,632 2,069,069 1,577,741 831,117 26.5

tight Lance D 246 2008 4,018,124 2,494,063 1,323,583 29.1

tight Lance D 158 2009 1,580,077 780,525 20.5

tight Lance D 176 2010 1,463,636 22.8

tight Lance V 7 1995 14,647 21,724 15,038 14,960 10,385 6.0

tight Lance V 14 1996 40,103 30,109 28,527 27,308 21,177 5.8

tight Lance V 37 1997 93,623 71,612 43,574 39,674 35,032 4.2

tight Lance V 55 1998 146,301 125,324 163,765 122,219 62,848 6.2

tight Lance V 55 1999 210,068 233,496 141,924 108,639 74,121 7.7

tight Lance V 84 2000 381,687 403,885 311,940 316,239 176,242 10.4

tight Lance V 121 2001 392,397 340,784 285,578 248,472 187,733 6.6

tight Lance V 82 2002 290,731 307,667 247,359 258,408 161,654 8.5

tight Lance V 105 2003 476,916 422,823 336,785 315,887 213,817 9.2

tight Lance V 80 2004 446,036 434,192 339,915 283,887 168,875 11.5

tight Lance V 2 2005 13,745 8,050 10,294 8,881 6,415 13.0

tight Lance V 81 2006 600,275 521,380 425,894 359,494 224,107 14.4

tight Lance V 117 2007 744,822 535,874 405,839 302,142 11.6

tight Lance V 118 2008 727,126 481,073 358,049 12.1

tight Lance V 57 2009 280,659 187,323 11.2

tight Lance V 35 2010 187,208 14.7

shale Hilliard-Baxter-Mancos H 1 1999 0 3 577 366 274 0.7

shale Hilliard-Baxter-Mancos H 2 2001 93 133 131 97 70 0.1

shale Hilliard-Baxter-Mancos H 2 2002 728 734 728 728 482 0.9

shale Hilliard-Baxter-Mancos H 1 2003 369 369 369 276 245 0.9

shale Hilliard-Baxter-Mancos H 1 2007 1,343 257 239 619 1.7

shale Hilliard-Baxter-Mancos V 1 1995 14 22 20 19 25 0.1

shale Hilliard-Baxter-Mancos V 1 1998 362 366 365 345 195 0.9

Page 3 of 8
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

shale Hilliard-Baxter-Mancos V 1 1999 15 29 31 19 0 0.1

shale Hilliard-Baxter-Mancos V 8 2001 231 216 200 162 116 0.1

shale Hilliard-Baxter-Mancos V 1 2002 195 74 22 193 183 0.4

shale Hilliard-Baxter-Mancos V 2 2004 180 436 663 568 318 0.6

shale Hilliard-Baxter-Mancos V 1 2005 84 23 384 144 147 0.4

shale Hilliard-Baxter-Mancos V 8 2006 24,303 31,692 17,515 23,642 13,979 7.6

shale Hilliard-Baxter-Mancos V 4 2007 23,621 10,465 12,170 6,408 9.0

shale Hilliard-Baxter-Mancos V 2 2008 2,845 472 445 1.7

shale Hilliard-Baxter-Mancos V 2 2010 102 0.1

shale Haynesville H 1 2007 21,000 14,867 12,094 8,213 38.5

shale Haynesville H 32 2008 396,807 113,346 49,719 16.0

shale Haynesville H 393 2009 9,664,850 2,448,922 42.2

shale Haynesville H 821 2010 13,328,150 44.5

shale Haynesville V 2 1995 611 1,024 1,026 612 333 1.0

shale Haynesville V 5 1996 4,276 4,572 4,032 4,228 3,206 2.2

shale Haynesville V 1 1997 283 240 375 437 315 0.9

shale Haynesville V 7 1998 29,361 42,826 56,757 23,436 20,344 13.5

shale Haynesville V 4 1999 3,111 3,009 2,251 2,038 1,900 1.7

shale Haynesville V 12 2000 14,608 15,777 16,611 8,383 6,244 2.8

shale Haynesville V 33 2001 69,878 64,936 62,488 59,932 39,492 4.9

shale Haynesville V 20 2002 82,450 44,026 56,256 59,940 63,402 8.4

shale Haynesville V 5 2003 9,893 7,724 6,164 2,782 4,011 3.4

shale Haynesville V 15 2004 31,009 32,318 32,419 21,781 15,640 4.9

shale Haynesville V 14 2005 49,105 28,347 23,390 15,487 9,872 4.9

shale Haynesville V 20 2006 96,603 53,723 46,850 34,096 23,430 7.0

shale Haynesville V 13 2007 102,491 39,025 47,580 28,821 11.5

shale Haynesville V 40 2008 441,078 257,349 152,165 19.4

shale Haynesville V 42 2009 422,405 228,417 21.2

shale Haynesville V 30 2010 238,867 21.8

tight Granite Wash H 1 1996 20,832 17,589 15,984 18,606 11,512 46.3

tight Granite Wash H 2 2000 0 0 0 0 0 0.0

tight Granite Wash H 1 2001 0 0 0 0 0 0.0

tight Granite Wash H 3 2004 57,798 49,553 45,044 37,936 29,144 40.1

tight Granite Wash H 2 2005 19,765 10,817 12,101 9,595 9,367 16.9

tight Granite Wash H 11 2006 40,674 18,101 21,422 19,389 14,474 5.7

tight Granite Wash H 13 2007 282,560 151,276 112,293 74,890 32.7

tight Granite Wash H 55 2008 1,446,792 966,558 493,156 48.3

tight Granite Wash H 48 2009 2,387,089 617,373 85.7

tight Granite Wash H 137 2010 1,527,998 30.6

tight Granite Wash V 17 1995 21,624 32,922 55,365 68,220 31,540 6.8

tight Granite Wash V 24 1996 62,729 53,070 44,684 39,675 31,404 5.3

tight Granite Wash V 33 1997 137,460 122,156 80,185 151,711 40,356 8.8

tight Granite Wash V 12 1998 17,899 17,958 30,181 20,408 8,606 4.3

tight Granite Wash V 15 1999 9,419 6,429 15,312 11,915 7,792 1.9

tight Granite Wash V 12 2000 20,410 15,061 20,544 14,439 8,724 3.6

tight Granite Wash V 44 2001 163,616 130,249 129,472 119,039 51,775 7.4

tight Granite Wash V 29 2002 158,437 115,297 81,893 110,519 51,243 9.8

tight Granite Wash V 89 2003 781,960 503,923 406,838 412,059 186,686 14.1

tight Granite Wash V 217 2004 1,666,478 1,382,426 1,062,472 996,023 835,086 15.0

tight Granite Wash V 338 2005 4,030,055 2,633,814 2,358,112 2,103,257 1,321,136 20.2

tight Granite Wash V 444 2006 8,822,412 4,780,875 3,966,812 3,411,074 1,858,909 28.2

tight Granite Wash V 444 2007 11,091,926 6,740,201 5,370,202 3,326,333 40.9

tight Granite Wash V 466 2008 7,578,942 4,420,069 2,223,153 27.9

tight Granite Wash V 155 2009 2,086,519 852,528 26.0

tight Granite Wash V 74 2010 937,571 34.7

shale Eagle Ford H 1 2000 805 1,075 0 0 1.3

shale Eagle Ford H 2 2002 338 265 79 293 160 0.3

shale Eagle Ford H 1 2003 0 0 4,177 3,622 1,354 5.0

shale Eagle Ford H 1 2006 0 0 0 0 0.0

shale Eagle Ford H 4 2007 0 674 1,056 929 0.5

shale Eagle Ford H 10 2008 15,738 23,983 989 3.7

shale Eagle Ford H 57 2009 232,812 91,938 7.8

shale Eagle Ford H 422 2010 772,153 5.0

shale Devonian (TX) H 9 1995 60,562 36,312 46,590 37,167 48,107 13.9

shale Devonian (TX) H 11 1996 39,118 20,811 17,896 16,978 6,530 5.0

shale Devonian (TX) H 19 1997 67,893 104,024 47,994 29,091 42,635 8.4

shale Devonian (TX) H 21 1998 69,441 64,976 41,420 40,742 32,082 6.5

Page 4 of 8
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

shale Devonian (TX) H 19 1999 214,624 171,734 146,703 134,127 100,849 22.1

shale Devonian (TX) H 21 2000 403,749 334,073 327,127 266,604 379,629 44.6

shale Devonian (TX) H 45 2001 799,830 229,448 280,911 239,295 176,105 21.0

shale Devonian (TX) H 51 2002 215,246 187,390 201,344 175,509 137,518 9.9

shale Devonian (TX) H 53 2003 445,518 896,519 646,171 734,057 394,035 32.2

shale Devonian (TX) H 40 2004 267,307 258,163 238,966 214,710 137,787 15.3

shale Devonian (TX) H 35 2005 315,556 303,601 373,378 450,386 286,340 27.1

shale Devonian (TX) H 21 2006 256,236 123,491 94,026 77,363 36,802 15.3

shale Devonian (TX) H 13 2007 131,911 132,300 71,560 65,088 21.1

shale Devonian (TX) H 12 2008 187,400 89,332 56,423 25.4

shale Devonian (TX) H 10 2009 222,409 70,771 40.2

shale Devonian (TX) H 1 2010 32,804 89.9

shale Devonian (TX) V 12 1995 2,519 5,248 5,997 5,560 3,320 1.0

shale Devonian (TX) V 3 1996 14,432 10,989 11,131 13,503 10,242 11.0

shale Devonian (TX) V 10 1997 644,173 571,731 645,270 625,756 453,811 161.1

shale Devonian (TX) V 9 1998 7,486 20,217 5,413 19,204 22,547 4.6

shale Devonian (TX) V 4 1999 45,491 56,895 43,939 19,276 18,872 25.3

shale Devonian (TX) V 7 2000 13,290 5,770 3,363 4,109 3,669 2.4

shale Devonian (TX) V 11 2001 277,753 173,977 196,772 236,402 173,143 52.7

shale Devonian (TX) V 9 2002 149,349 162,557 149,220 172,988 110,291 45.3

shale Devonian (TX) V 17 2003 72,443 43,847 38,804 50,610 42,224 8.0

shale Devonian (TX) V 19 2004 829,498 744,464 623,261 566,352 264,386 87.3

shale Devonian (TX) V 13 2005 29,700 31,295 10,366 12,586 44,047 5.4

shale Devonian (TX) V 18 2006 312,411 350,890 447,842 366,418 300,335 54.1

shale Devonian (TX) V 6 2007 5,268 3,800 21,982 11,646 4.9

shale Devonian (TX) V 6 2008 16,672 13,328 10,002 6.1

shale Devonian (TX) V 5 2009 14,665 13,305 7.7

shale Devonian (TX) V 13 2010 82,723 17.4

shale Devonian (Appalachian) V 13 2007 468 387 5,193 0.4

shale Devonian (Appalachian) V 12 2008 3,529 1,489 0.6

shale Devonian (Appalachian) V 15 2009 5,219 1.0

shale Devonian (Appalachian) V 12 2010 0 0.0

tight Dakota D 6 2002 9,041 9,386 8,981 8,165 5,470 3.7

tight Dakota D 10 2003 5,943 5,726 5,224 5,165 3,818 1.4

tight Dakota D 19 2004 10,819 8,926 6,347 5,423 4,279 1.0

tight Dakota D 4 2005 1,017 1,283 2,169 584 398 0.7

tight Dakota D 23 2006 53,994 38,399 26,566 9,502 5,982 3.2

tight Dakota D 47 2007 75,760 73,434 67,355 50,630 3.9

tight Dakota D 79 2008 492,285 310,115 219,985 11.8

tight Dakota D 107 2009 368,177 260,980 8.1

tight Dakota D 84 2010 175,802 5.7

tight Dakota V 2 2000 4,178 737 791 1,098 876 2.1

tight Dakota V 1 2006 300 296 675 247 322 1.0

tight Dakota V 1 2007 1,500 935 1,160 990 3.1

tight Dakota V 2 2010 405 0.6

tight Cotton Valley D 32 2000 136,085 139,975 131,971 132,438 111,972 11.2

tight Cotton Valley D 67 2001 445,415 384,420 365,392 347,858 294,750 15.0

tight Cotton Valley D 27 2002 236,766 199,833 175,733 167,601 134,286 18.6

tight Cotton Valley D 80 2003 555,744 566,350 403,918 388,155 282,919 15.0

tight Cotton Valley D 202 2004 1,507,964 1,726,636 2,295,473 813,209 571,524 18.8

tight Cotton Valley D 240 2005 1,752,903 1,447,607 2,322,131 3,442,352 975,172 22.7

tight Cotton Valley D 273 2006 5,059,911 3,316,758 4,529,035 2,958,548 1,199,411 34.2

tight Cotton Valley D 270 2007 4,878,532 2,844,890 2,394,109 1,516,388 29.5

tight Cotton Valley D 333 2008 8,023,636 5,417,287 3,048,279 45.2

tight Cotton Valley D 171 2009 3,505,544 1,777,318 42.3

tight Cotton Valley D 106 2010 1,390,009 35.9

tight Cotton Valley H 1 1997 5,542 3,578 458 159 136 5.4

tight Cotton Valley H 1 1998 0 0 0 0 0 0.0

tight Cotton Valley H 4 2000 5,973 5,113 5,426 4,154 1,670 3.1

tight Cotton Valley H 3 2001 15,894 18,570 19,453 17,982 15,116 15.9

tight Cotton Valley H 1 2002 1,858 1,354 1,396 1,677 1,402 4.2

tight Cotton Valley H 3 2004 48,842 29,815 25,691 19,839 7,266 24.0

tight Cotton Valley H 7 2005 48,140 32,597 27,247 20,393 14,065 11.2

tight Cotton Valley H 16 2006 206,407 136,183 109,072 89,149 60,598 20.6

tight Cotton Valley H 32 2007 1,303,923 705,874 666,062 443,221 66.8

tight Cotton Valley H 105 2008 3,629,795 2,027,883 1,350,122 61.0

tight Cotton Valley H 74 2009 2,421,219 1,050,026 64.3

Page 5 of 8
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

tight Cotton Valley H 88 2010 1,734,761 54.0

tight Cotton Valley V 202 1995 557,884 514,004 486,066 468,882 607,684 7.1

tight Cotton Valley V 278 1996 902,910 808,826 877,982 1,673,103 1,249,171 10.9

tight Cotton Valley V 342 1997 1,116,364 1,038,596 917,226 959,736 711,562 7.6

tight Cotton Valley V 357 1998 2,664,225 1,246,698 1,213,721 1,048,118 827,362 10.7

tight Cotton Valley V 231 1999 1,137,134 1,068,095 922,124 895,682 771,226 11.4

tight Cotton Valley V 442 2000 2,129,698 1,795,744 2,918,493 2,509,643 1,596,872 13.6

tight Cotton Valley V 575 2001 2,511,730 2,262,246 2,034,412 1,954,424 1,587,087 9.9

tight Cotton Valley V 399 2002 2,150,813 1,730,968 1,769,888 1,642,161 1,244,698 11.7

tight Cotton Valley V 733 2003 7,982,811 4,722,013 3,799,393 3,483,620 2,474,507 16.8

tight Cotton Valley V 983 2004 8,589,349 7,063,266 6,212,262 6,172,333 3,953,471 17.8

tight Cotton Valley V 1250 2005 15,082,924 11,393,056 10,027,862 10,976,173 6,438,926 23.6

tight Cotton Valley V 1345 2006 30,450,313 18,163,937 15,627,702 13,034,938 6,740,905 34.2

tight Cotton Valley V 1539 2007 37,816,002 21,586,767 24,736,615 10,607,494 42.2

tight Cotton Valley V 1334 2008 31,087,858 18,224,683 11,160,428 41.4

tight Cotton Valley V 462 2009 10,540,278 5,680,742 48.1

tight Cotton Valley V 245 2010 3,685,254 41.2

tight Cleveland H 2 1995 196 177 177 167 100 0.2

tight Cleveland H 2 1997 267 3,246 1,484 1,111 721 1.9

tight Cleveland H 1 1998 364 1.0

tight Cleveland H 1 2001 216 116 103 108 77 0.3

tight Cleveland H 3 2002 1,863 1,722 2,129 1,827 1,326 1.6

tight Cleveland H 15 2003 10,853 8,657 7,688 7,398 5,133 1.5

tight Cleveland H 63 2004 43,637 44,567 51,941 50,742 32,283 1.9

tight Cleveland H 81 2005 118,788 75,168 80,171 77,791 43,419 2.7

tight Cleveland H 89 2006 226,683 205,653 183,667 154,121 139,354 5.6

tight Cleveland H 53 2007 320,551 326,175 70,079 45,435 9.9

tight Cleveland H 121 2008 339,281 224,654 201,690 5.8

tight Cleveland H 69 2009 246,981 134,308 7.6

tight Cleveland H 71 2010 70,301 2.7

tight Cleveland V 47 1995 28,941 26,553 24,239 20,472 12,351 1.3

tight Cleveland V 65 1996 16,439 15,767 14,405 13,524 9,777 0.6

tight Cleveland V 34 1997 5,892 5,911 5,582 5,263 3,806 0.4

tight Cleveland V 29 1998 3,084 3,503 4,253 3,527 2,274 0.3

tight Cleveland V 21 1999 5,952 5,347 4,932 4,278 2,603 0.6

tight Cleveland V 14 2000 29,745 30,306 26,396 32,430 21,296 5.5

tight Cleveland V 45 2001 14,971 56,629 58,184 53,633 42,674 2.8

tight Cleveland V 14 2002 8,947 7,994 7,628 7,574 6,032 1.5

tight Cleveland V 18 2003 200,160 260,846 238,988 205,388 173,374 32.8

tight Cleveland V 17 2004 9,158 7,809 4,285 4,583 1,840 0.9

tight Cleveland V 22 2005 7,462 5,534 4,543 3,761 3,584 0.6

tight Cleveland V 23 2006 10,918 15,221 12,191 8,423 5,239 1.2

tight Cleveland V 25 2007 16,909 3,247 2,622 1,728 0.7

tight Cleveland V 12 2008 4,518 4,137 2,386 0.8

tight Cleveland V 3 2009 0 0 0.0

tight Cleveland V 1 2010 0 0.0

shale Bossier D 2 1996 77,071 33,033 17,304 6,713 3,822 37.8

shale Bossier D 4 1999 6,777 4,911 5,023 5,481 2,081 3.3

shale Bossier D 3 2000 5,069 3,482 3,179 2,631 1,921 3.0

shale Bossier D 2 2001 4,644 1,757 790 480 329 2.2

shale Bossier D 5 2002 8,633 6,896 4,110 4,646 13,328 4.1

shale Bossier D 10 2003 31,038 30,710 33,063 28,615 17,287 7.7

shale Bossier D 14 2004 44,155 32,011 36,238 29,469 31,090 6.8

shale Bossier D 30 2005 80,879 62,494 51,568 53,172 43,116 5.3

shale Bossier D 27 2006 403,983 215,608 179,407 116,078 103,900 20.7

shale Bossier D 32 2007 339,719 172,476 158,745 99,807 16.5

shale Bossier D 47 2008 443,102 332,476 156,841 18.1

shale Bossier D 47 2009 653,774 476,091 32.9

shale Bossier D 30 2010 223,751 20.4

shale Bossier H 3 2006 94,375 41,691 25,832 20,512 13,716 35.8

shale Bossier H 5 2007 52,584 28,503 21,587 15,224 16.2

shale Bossier H 3 2008 22,819 13,201 8,431 13.5

shale Bossier H 5 2009 43,171 22,425 18.0

shale Bossier H 9 2010 58,686 17.9

shale Bossier V 12 1995 26,259 23,825 16,944 12,861 9,693 4.1

shale Bossier V 14 1996 26,178 25,687 38,478 35,072 24,175 5.9

shale Bossier V 26 1997 51,205 51,656 73,761 204,531 116,816 10.5

Page 6 of 8
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

shale Bossier V 13 1998 22,782 15,335 15,360 20,729 15,718 3.8

shale Bossier V 33 1999 183,867 212,520 208,367 93,944 30,101 12.1

shale Bossier V 36 2000 102,193 66,040 49,678 53,402 33,297 4.6

shale Bossier V 38 2001 97,289 101,426 67,255 50,266 41,387 5.2

shale Bossier V 36 2002 87,869 72,490 50,123 49,887 47,662 4.7

shale Bossier V 70 2003 235,198 233,915 207,983 798,320 185,183 13.0

shale Bossier V 75 2004 253,359 175,403 167,429 154,857 103,678 6.2

shale Bossier V 70 2005 489,120 604,460 450,462 200,406 191,637 15.2

shale Bossier V 130 2006 2,109,142 1,188,216 868,926 686,180 515,572 22.6

shale Bossier V 211 2007 6,674,173 4,128,604 3,141,263 1,839,604 51.2

shale Bossier V 213 2008 3,953,722 1,422,604 868,799 26.8

shale Bossier V 142 2009 1,690,924 810,016 24.1

shale Bossier V 84 2010 741,973 24.2

shale Barnett H 1 1998 402 475 287 488 614 1.2

shale Barnett H 1 2000 2,964 3,723 2,892 2,362 1,617 7.4

shale Barnett H 1 2001 1,550 1,382 1,201 1,232 945 3.5

shale Barnett H 4 2002 12,364 16,991 18,554 11,397 24,237 11.4

shale Barnett H 78 2003 571,851 570,827 498,664 547,037 511,815 19.0

shale Barnett H 260 2004 1,760,227 1,772,633 1,686,449 1,562,233 1,047,994 16.5

shale Barnett H 640 2005 9,728,591 12,083,421 14,116,598 12,337,711 8,353,219 48.5

shale Barnett H 1156 2006 39,433,230 20,873,337 17,189,776 13,799,108 10,565,114 48.3

shale Barnett H 2180 2007 58,017,111 34,970,374 26,592,199 17,525,438 43.1

shale Barnett H 2617 2008 46,861,850 26,143,390 19,049,956 32.1

shale Barnett H 1520 2009 56,865,362 32,393,917 80.4

shale Barnett H 1887 2010 17,052,449 24.8

shale Barnett V 68 1995 226,589 151,264 133,918 134,826 96,162 6.0

shale Barnett V 48 1996 87,795 90,046 92,190 79,570 47,659 4.5

shale Barnett V 77 1997 112,411 120,828 113,531 116,896 82,349 3.9

shale Barnett V 73 1998 366,914 470,442 379,693 210,475 134,203 11.7

shale Barnett V 80 1999 96,499 182,924 113,734 86,143 67,531 3.7

shale Barnett V 183 2000 486,876 697,302 615,824 622,652 362,151 8.3

shale Barnett V 444 2001 908,532 1,020,027 790,831 600,210 479,643 4.7

shale Barnett V 640 2002 1,126,155 1,256,373 1,165,780 865,488 627,795 4.3

shale Barnett V 615 2003 1,545,704 1,181,566 938,084 836,708 734,715 4.7

shale Barnett V 382 2004 1,093,974 1,234,313 796,283 1,103,535 679,072 7.0

shale Barnett V 250 2005 879,226 711,638 516,030 372,803 187,999 5.8

shale Barnett V 179 2006 2,045,595 1,049,702 703,035 576,252 695,587 15.5

shale Barnett V 106 2007 390,685 218,638 192,440 149,926 6.1

shale Barnett V 97 2008 572,619 500,450 200,837 12.0

shale Barnett V 44 2009 365,850 216,001 18.1

shale Barnett V 32 2010 68,474 5.9

shale Bakken H 1 2000 52 82 174 14,932 7,561 12.5

shale Bakken H 3 2001 1,485 2,966 2,980 2,995 1,643 2.2

shale Bakken H 5 2004 20,688 19,254 18,972 18,021 20,513 10.7

shale Bakken H 30 2005 226,277 207,166 172,412 168,384 115,062 16.2

shale Bakken H 68 2006 523,491 359,350 296,803 314,986 230,627 13.9

shale Bakken H 159 2007 1,256,516 832,610 944,010 707,676 16.1

shale Bakken H 430 2008 3,937,556 2,951,932 1,628,693 18.1

shale Bakken H 464 2009 7,432,933 3,554,389 32.4

shale Bakken H 579 2010 10,694,932 50.6

shale Bakken V 1 2001 14,225 12,098 32,470 35,221 19,825 62.4

shale Bakken V 1 2005 4,782 6,897 3,684 2,086 12.0

shale Bakken V 4 2007 59,731 28,798 29,867 16,722 23.1

shale Bakken V 3 2008 6,605 3,825 3,065 4.1

shale Bakken V 12 2009 137,115 75,944 24.3

shale Bakken V 201 2010 6,194,014 84.4

shale Avalon & Bone Spring D 1 1996 183 0 0 0 0 0.1

shale Avalon & Bone Spring D 1 2000 6,021 13,922 21,975 16,021 13,227 39.0

shale Avalon & Bone Spring D 2 2001 4,027 1,656 2,212 7,889 3,408 5.3

shale Avalon & Bone Spring D 2 2002 8,084 24,653 14,337 7,224 3,928 16.0

shale Avalon & Bone Spring D 4 2003 29,722 50,521 32,754 26,559 16,647 21.4

shale Avalon & Bone Spring D 1 2004 5,264 2,523 1,333 464 370 5.5

shale Avalon & Bone Spring D 3 2005 22,025 18,203 15,497 12,377 9,476 14.2

shale Avalon & Bone Spring D 10 2006 138,350 86,537 87,094 81,139 39,860 23.7

shale Avalon & Bone Spring D 9 2007 137,462 86,218 73,002 54,060 26.7

shale Avalon & Bone Spring D 19 2008 326,502 273,412 112,128 34.2

shale Avalon & Bone Spring D 39 2009 1,146,028 552,959 59.7

Page 7 of 8
DI Desktop Long-term Produced Water Generation Rates - DCN SGE00724.A2

Long-term Produced Water Rates by Formation, Completion Year, and Well Trajectory

Drill Type definitions: H - horizontal well, V = vertical well, D = directional well

2007 2008 2009 2010 2011

Annual Long-term Produced Water Volume (bbls)

Daily Average Longterm Produced Water 

(bbl/day/well)

Resource 

Type Formation Well Trajectory

Number 

of Wells

Well 

Completion 

Year

shale Avalon & Bone Spring D 92 2010 2,813,028 83.8

shale Avalon & Bone Spring H 1 1996 0 0 0 0 0 0.0

shale Avalon & Bone Spring H 1 1998 0 0 0 0 0 0.0

shale Avalon & Bone Spring H 1 1999 0 0 0 0 0 0.0

shale Avalon & Bone Spring H 1 2005 0 0 0 0 0 0.0

shale Avalon & Bone Spring H 1 2006 14,323 8,463 34,882 22,275 17,731 53.5

shale Avalon & Bone Spring H 10 2007 382,433 243,530 138,845 95,608 58.9

shale Avalon & Bone Spring H 10 2008 169,945 147,425 116,474 39.6

shale Avalon & Bone Spring H 8 2009 33,427 27,193 10.4

shale Avalon & Bone Spring H 4 2010 0 0.0

shale Avalon & Bone Spring V 1 1995 54,092 48,439 16,634 16,179 12,570 81.0

shale Avalon & Bone Spring V 2 1997 1,317 1,136 581 599 241 1.1

shale Avalon & Bone Spring V 2 1998 0 0 0 0 0 0.0

shale Avalon & Bone Spring V 1 1999 15,853 17,329 8,183 177 36 22.8

shale Avalon & Bone Spring V 1 2003 14,585 17,237 20,234 13,811 9,263 41.2

shale Avalon & Bone Spring V 1 2004 0 0 0.0

shale Avalon & Bone Spring V 2 2005 122,435 30,319 9,671 0 3,560 45.5

shale Avalon & Bone Spring V 4 2007 34,515 8,429 6,681 4,373 9.2

shale Avalon & Bone Spring V 3 2008 514,449 244,415 80,706 255.6

shale Avalon & Bone Spring V 3 2009 58,782 22,164 37.0

shale Avalon & Bone Spring V 7 2010 35,154 13.8

tight Austin Chalk H 178 1995 2,976,557 2,779,069 4,107,133 7,297,152 269,563 53.7

tight Austin Chalk H 134 1996 895,423 854,911 917,311 800,082 666,996 16.9

tight Austin Chalk H 143 1997 752,747 955,762 787,213 776,510 691,682 15.2

tight Austin Chalk H 53 1998 165,898 218,492 147,711 209,768 123,972 9.0

tight Austin Chalk H 38 1999 91,561 88,691 69,948 70,606 59,575 5.5

tight Austin Chalk H 15 2000 262,988 231,631 195,139 178,025 107,962 35.6

tight Austin Chalk H 41 2001 101,951 172,747 110,208 101,981 63,915 7.4

tight Austin Chalk H 38 2002 292,239 273,033 230,774 155,444 120,028 15.5

tight Austin Chalk H 44 2003 139,596 144,990 94,827 81,461 58,214 6.5

tight Austin Chalk H 51 2004 711,408 497,340 444,775 422,847 267,963 25.2

tight Austin Chalk H 48 2005 307,405 275,076 201,465 167,621 121,099 12.2

tight Austin Chalk H 52 2006 528,219 248,382 228,622 329,907 326,806 17.5

tight Austin Chalk H 60 2007 841,353 475,326 314,755 205,788 21.0

tight Austin Chalk H 87 2008 1,911,714 731,201 349,681 31.4

tight Austin Chalk H 56 2009 3,453,987 1,572,147 122.9

tight Austin Chalk H 59 2010 1,327,656 61.7

tight Austin Chalk V 1 1995 650 1,388 2,760 1,092 412 3.5

tight Austin Chalk V 6 1997 70,894 170,343 122,746 77,016 21,486 42.2

tight Austin Chalk V 2 1998 0 0 0 0 0 0.0

tight Austin Chalk V 2 2000 0 0 0 0 0 0.0

tight Austin Chalk V 2 2001 0 0 0 0 0 0.0

tight Austin Chalk V 1 2002 0 0 0 0 0 0.0

tight Austin Chalk V 1 2005 7,682 6,385 3,360 7,676 4,122 16.0

tight Austin Chalk V 2 2006 6,036 5,987 2,591 4,321 3,974 6.3

tight Austin Chalk V 4 2007 0 0 0 0 0.0

tight Austin Chalk V 8 2008 89,332 91,358 76,612 29.4

tight Austin Chalk V 2 2009 0 0 0.0

tight Austin Chalk V 2 2010 0 0.0

Page 8 of 8