The charts below evaluate liability and bond amounts on a state level. Data was sourced from Enverus and State departments responsible for P&A bonding data. Data is updated through September 2020.

On this page:

Top 10 largest operators, by expected liability, and Top 10 largest operators, inactive wells

Alaska

California

Colorado

Louisiana

North Dakota

New Mexico

Ohio

Oklahoma

Pennsylvania

Texas

Utah

West Virginia

Wyoming

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Breakdown of Vintage of Wells

Well Type

# Wells

Estimated cost

% of cost

Alaska

Producing

2,150

$559,577,951

47%

Stripper

245

$60,042,279

5%

Injection + other

1,779

$416,106,047

35%

TA (LP>24<60)

195

$49,498,166

4%

Zombie (LP>60)

436

$108,212,716

9%

TOTAL

4,805

$1,193,437,159

100%

California

Producing

5,372

$399,384,929

6%

Stripper

18,283

$1,226,280,016

19%

Injection + other

66,321

$3,384,640,904

53%

TA (LP>24<60)

4,135

$299,900,842

5%

Zombie (LP>60)

13,173

$1,052,108,967

17%

TOTAL

107,284

$6,362,315,657

100%

Colorado

Producing

13,425

$1,969,672,557

24%

Stripper

29,907

$4,014,022,255

48%

Injection + other

11,351

$1,598,627,847

19%

TA (LP>24<60)

3,056

$483,875,187

6%

Zombie (LP>60)

1,972

$232,117,612

3%

TOTAL

59,711

$8,298,315,458

100%

Louisiana

Producing

5,874

$1,616,822,685

15%

Stripper

27,770

$2,946,946,978

28%

Injection + other

18,773

$3,162,615,877

30%

TA (LP>24<60)

4,212

$585,921,117

6%

Zombie (LP>60)

14,411

$2,210,737,888

21%

TOTAL

71,040

$10,523,044,545

100%

North Dakota

Producing

12,957

$3,745,190,641

46%

Stripper

5,009

$1,174,492,632

14%

Injection + other

11,703

$3,056,601,700

37%

TA (LP>24<60)

322

$80,036,489

1%

Zombie (LP>60)

504

$110,137,327

1%

TOTAL

30,495

$8,166,458,789

100%

New Mexico

Producing

12,542

$2,176,315,206

21%

Stripper

38,507

$4,792,230,282

45%

Injection + other

19,459

$3,237,137,679

31%

TA (LP>24<60)

1,376

$154,793,661

1%

Zombie (LP>60)

1,866

$200,093,213

2%

TOTAL

73,750

$10,560,570,042

100%

Ohio

Producing

2,617

$577,276,283

5%

Stripper

38,511

$3,123,159,651

25%

Injection + other

93,014

$5,991,701,544

48%

TA (LP>24<60)

8,494

$627,231,458

5%

Zombie (LP>60)

28,766

$2,163,831,975

17%

TOTAL

171,402

$12,483,200,912

100%

Oklahoma

Producing

12,740

$2,867,989,084

9%

Stripper

61,476

$8,287,616,961

26%

Injection + other

157,476

$14,993,064,144

48%

TA (LP>24<60)

11,037

$1,345,148,000

4%

Zombie (LP>60)

42,743

$3,883,288,658

12%

TOTAL

285,472

$31,377,106,847

100%

Pennsylvania

Producing

9,971

$1,619,558,856

13%

Stripper

70,042

$5,005,494,960

41%

Injection + other

49,050

$4,100,144,528

34%

TA (LP>24<60)

8,422

$559,386,368

5%

Zombie (LP>60)

13,817

$875,850,950

7%

TOTAL

151,302

$12,160,435,661

100%

Texas

Producing

66,740

$15,218,977,456

16%

Stripper

234,282

$37,017,668,172

38%

Injection + other

189,924

$27,742,143,057

29%

TA (LP>24<60)

25,786

$3,856,141,772

4%

Zombie (LP>60)

103,766

$13,046,981,510

13%

TOTAL

620,498

$96,881,911,968

100%

Utah

Producing

2,839

$613,882,358

14%

Stripper

9,299

$1,625,850,549

37%

Injection + other

9,190

$1,759,155,242

40%

TA (LP>24<60)

893

$140,638,546

3%

Zombie (LP>60)

1,885

$245,493,151

6%

TOTAL

24,106

$4,385,019,847

100%

West Virginia

Producing

3,163

$473,404,390

6%

Stripper

53,823

$4,153,636,486

54%

Injection + other

42,003

$2,920,922,288

38%

TA (LP>24<60)

951

$64,106,608

1%

Zombie (LP>60)

504

$32,595,930

0%

TOTAL

100,444

$7,644,665,702

100%

Wyoming

Producing

11,561

$2,763,639,558

29%

Stripper

20,011

$2,824,480,721

30%

Injection + other

20,495

$3,084,126,952

33%

TA (LP>24<60)

3,421

$339,623,094

4%

Zombie (LP>60)

7,091

$415,431,442

4%

TOTAL

62,579

$9,427,301,766

100%

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Total bond amount, Total liability amount, bonding ratio

State

CTI Liability Estimate ($B) 

CTI Bonding Estimate ($)

Bonding Ratio (%)

Alaska

1.2

57,750,000

5%

California

6.4

117,601,580

2%

Colorado

8.3

162,276,065

2%

Louisiana 

10.5

504,204,429

5%

New Mexico

10.6

97,992,704

1%

North Dakota

8.2

83,350,000

1%

Ohio

12.5

22,353,710

0%

Oklahoma

31.4

62,281,698

0%

Pennsylvania

12.2

47,178,549

0%

Texas 

96.9

N/A

N/A

Utah

4.4

18,708,450

0%

West Virginia

7.6

28,733,376

0%

Wyoming

9.4

194,159,090

2%

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Focus Area: Colorado Blanket Bonds

Can industry afford more financial assurance for its wells?

The numbers suggest they can.

On a combined basis, the top 10 operators in Colorado cover plugging liability on 31,707 wells through blanket bonds — that’s 62% of the total number of unplugged wells in the state.  The face value of those bonds is a mere $1,000,000.  Typical industry premiums are 1%, so these operators pay a mere $10,000 per year in premiums — an average of $0.32 per well.

Top Ten Operators

Number of Unplugged Wells*

62% of Unplugged Wells

Blanket Bond Coverage

Estimated Annual Premium 1%

Average Blanket Bond Coverage Per Well

Average Annual Blanket Bond Premium Per Well


31,707

$1,000,000

$10,000

$32

$0.32

TEP ROCKY MOUNTAIN LLC

5,444

$100,000

$1,000

$18

$0.18

NOBLE ENERGY

4,803

$100,000

$1,000

$21

$0.21

KERR MCGEE

4,952

$100,000

$1,000

$20

$0.20

CAERUS PICEANCE LLC**

4,326

$100,000

$1,000

$23

$0.23

PDC ENERGY INC

3,409

$100,000

$1,000

$29

$0.29

EVERGREEN NATURAL RESOURCES LLC

2,263

$100,000

$1,000

$44

$0.44

OWN RESOURCES OPERATING LLC

1,814

$100,000

$1,000

$55

$0.55

FOUNDATION ENERGY MANAGEMENT LLC

1,684

$100,000

$1,000

$59

$0.59

CRESTONE PEAK RESOURCES OPERATING LLC

1,536

$100,000

$1,000

$65

$0.65

LARAMIE ENERGY LLC

1,476

$100,000

$1,000

$68

$0.68

*COGCC Data Date 2020.12.26

**COGCC currently lists two duplicate $100K blanket bonds for Caerus Piceance LLC

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