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10 / 14

1

233

6

1

676

5

1

2

280

15

1

345

15

1

3

240

13

2

531

33

11

4

180

12

2

180

16

3

5

250

5

2

500

5

2

6

95

8

2

75

12

0

7

125

13

1

125

14

0

8

55

6

1

55

13

2

9

120

45

6

175

40

0

10

160

16

3

334

17

3

11

180

7

12

80

6

6

12

215

15

4

388

21

2

13

122

8

8

124

12

7

14

88

5

10

23

9

1

Avg.

167

12

4

258

16

3

a

All wells approximately 11,400 feet deep.

Source: World Oil, November, 1995.

ion in Midland Farm Field, Texas

ction 30 Days After Installation

Oil (Bpd)

Water (Bpd)

Installing Plunger Lift Systems In Gas Wells

(Cont’d)

Exhibit 12: Change in Production Rates

due to Plun

ger Lift Installat

aWell #

Produ

Gas (Mcfd)

Production Before Plung

er Lift

Gas (Mcfd)

Oil (Bpd)

Water (Bpd

)

Average Annual Gas Savingsa (Mcf/year)

Value of Gas Saved per Yearb

Plunger Lift Installation Cost per Well

Avoided Rod Workover Cost per Well per Year

Avoided Chemical Treatment per Well per Year

Avoided Electrical Costs per Well per Day

Average Savings per Wellc

Additional Salvage Value of Beam Lift per Well

11,274

$78,918

$13,000

$4,000

$13,000

$20

$90,200

$41,500

Exhibit 13: BP Economics of Plunger Lifts Replacing Beam LIfts

10

a b c

Average initial gas production = 1,348 Mcfd. Assumes 6 percent annual production decline. Gas valued at $7.00 per Mcf. Value saved is averaged over 14 wells.

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