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Stainless Steel Muni-Pak Screens

Johnson Screens Muni-Pak for faster gravel packing

Unique Selling Point

  • The pre-packed construction of Muni-Pak screens allows the use of a smaller borehole versus gravel packed filtering, with fewer cuttings, reduced circulating volume and increased uphole velocity. This feature lowers bit and cement costs and reduces the drilling time.
  • Since the media is included as part of the screen package, gravel placement is not required—eliminating bridging filter packs and time spent packing, as well as reduction of equipment requirements. The results are reduced installation time and lower costs.
  • The Muni-Pak's dual-screen construction is four times stronger than standard rod-based screens, allowing more aggressive development and better immunity to unexpected hole problems—providing lower costs.
  • A thinner filter pack results in a smaller annulus for easier development and rehabilitation of the near-well area over time, better formation penetration and more aggressive development. The benefits are a perfect media pack, reduced site time and lower risk.
  • The wide range of diameters (1.25 to 20 in.) and connections (weld rings or threaded fittings) provides flexibility for meeting most application needs with a variety of standard or custom-end fittings—offering easier adaptation for a wide array of uses.
  • The continuous-slot construction provides a maximum open area, optimizing development and redevelopment. The result is through development.
  • With custom lengths up to 40 ft., with no mid-weld, on-site welding requirements are reduced; thus, minimizing field assembly time and associated costs.
  • Multiple wire-size and filter-media options enable custom applications and maximum depth capabilities, providing a wide range of uses.
  • Ceramic or glass beads improves efficiency by offering excellent roundness and sphericity, a lower uniformity coefficient for better hydraulic conductivity, better flow characteristics than silica sands, less buildup of biofilm and encrustation and easier media cleaning than with irregularly shaped silica sand grains.
  • Muni-Pak works great as a liner in existing well construction, eliminating the need the construction and the cost of a new.

Insights

Johnson Screens' solution for improving the gravel pack — the Muni-Pak screen. For contractors, this state-of-the-art, pre-packed screen eliminates the need for a larger borehole, shortens the time required to drill a well and speeds development time. It simplifies the contractor's work and improves successful well development.

For the well owner, the Muni-Pak screen offers long-term benefits. This innovation uses ceramic or glass beads as the filter media — a concept that reduces the likelihood of filter pack fouling from biofilm and encrustation, lowering overall well maintenance costs.

Artificial filter pack is one of the most common designs used today for high-capacity municipal, industrial and agricultural wells. Before the installation of a filter pack, the contractor and the well owner must take into account some significant issues:

The borehole must be sufficiently oversized to allow for adequate placement of the filter pack. In practice, an annular thickness of 3 to 5 in. is considered minimum. The oversized borehole is costly to the contractor (and therefore to the well owner) and keeps the crew on site for additional time.
The filter pack must be carefully selected, placed and developed to avoid bridging and sand pumping.

The well owner is concerned with long-term performance. Biofouling and encrustation are issues that will eventually affect performance.

Applications
  • Controls sand infiltration in new, high-capacity municipal, industrial and agricultural wells
  • Can be used as a liner in existing wells to eliminate the need for constructing a new well
  • Custom applications such as infiltration galleries
  • Environmental remediations
  • Horizontal applications

Muni-Pak­ Screen Specifications

Size¹

(in.)

Approx. Screen ID

(in.)

Approx. Screen OD

(in.)

Media Annular Thickness

(in.)

Inner Screen Open Area -

sq. in./ft. of Screen

Outer Screen Open Area -

sq. in./ft. of Screen

Approx. Screen Weight

(lbs/ft.)

Screen Slot Size
(thousandths of an in.)

Screen Slot Size
(thousandths of an in.)

10

20

30

40

50

60

80

100

10

20

30

40

50

60

80

100

2 x 4

1.5

4.5

0.85

13

22

30

35

40

44

51

55

24

42

56

68

77

85

97

106

17

3 x 5

2.8

5.7

0.97

20

35

46

55

63

69

79

86

30

53

70

84

96

105

120

132

23

4 x 6

3.8

6.7

0.94

25

44

59

70

80

87

100

110

36

62

83

100

114

125

143

156

25

5 x 7

4.7

7.7

0.87

30

53

70

84

96

105

120

132

40

70

94

113

128

141

161

176

27

6 x 8

5.8

8.7

0.84

36

62

83

100

114

125

143

156

46

81

108

129

147

162

185

202

35

8 x 10

7.7

10.8

0.84

33

60

82

101

117

131

155

172

41

74

102

125

145

162

191

213

55

10 x 12

9.8

12.8

0.84

41

74

102

125

145

162

191

213

48

88

121

148

172

193

226

253

70

12 x 15

11.8

15.0

0.84

59

106

143

173

199

220

255

281

69

122

165

200

230

255

295

325

85

14 x 16

13.0

16.0

0.64

42

78

108

135

159

180

215

244

48

89

125

155

183

207

247

281

100

16 x 18

15.0

18.0

0.64

48

89

125

155

183

207

247

281

54

99

139

173

204

230

276

313

115

18 x 20

16.9

20.0

0.78

54

99

139

173

204

230

276

313

59

110

154

192

226

256

306

347

128

Muni-Pak Screen vs. Standard Rod Based Screen

Nominal Size (in.)²

Collapse Strength (PSI)

Tensile Strength (PSI)

Rod Based

Muni-Pak

Rod Based

Muni-Pak

Rod Based

Muni-Pak

2

2 x 4

1,940

16,500

4,300

12,500

3

3 x 5

540

5,650

5,200

15,000

4

4 x 6

730

2,830

6,100

18,800

5

5 x 7

440

1,550

7,000

20,700

6

6 x 8

260

990

17,600

41,600

8

8 x 10

250

1,160

24,200

50,000

10

10 x 12

360

630

30,800

81,400

12

12 x 15

220

880

35,200

87,000

14

14 x 16

170

1,110

35,200

95,400

16

16 x 18

170

760

72,200

135,900

18

18 x 20

130

540

74,200

147,200
Notes: *Other sizes available upon request * Values compare 1,000 ft. construction Muni-Pak to 1,000 ft. construction rod base 1. Other sizes available upon request 2. Table compares 1,000 ft. rod-based construction vs 1,000 ft. Muni-Pak construction

Locations and Contact

Asia

Aqseptence Group Japan Limited, Yokohama

Sales Location
Daiwa Jisho Bldg. 74-1,
Yamashita-Cho Naka-Ku, Yokohama
231-0023 Kanagawa
Japan

Tel: +81 45 661 3575

Fax: +81 45 661 1921

info.johnsonscreens.jp@aqseptence.com

Europe

Aqseptence Group SAS, Soissons

Sales and Manufacturing Location
108 route de Reims
02200 Billy-sur-Aisne
France

Tel: +33 3 23 75 05 42

Fax: +33 3 23 75 05 43

info.johnsonscreens.fr@aqseptence.com

North America

Aqseptence Group, Inc., New Brighton, MN

Sales and Manufacturing Location
1950 Old Hwy 8 NW,
New Brighton, MN 55112
USA

Tel: +1 651 636 3900

Fax: +1 651 638 3171

info.johnsonscreens.us@aqseptence.com

North America

Aqseptence Group, Inc., Bakersfield, CA

Manufacturing Location
1901 E Brundage Ln,
Bakersfield, CA 93307
USA

Tel: +1 661 323 1525

Fax: +1 661 323 1606

info.johnsonscreens.us@aqseptence.com

North America

Aqseptence Group, Inc., Forked River, NJ

Sales and Manufacturing Location
708 Challenger Way,
Forked River, NJ 08731
USA

Tel: +1 609 693 9434

Fax: +1 609 971 8708

info.johnsonscreens.us@aqseptence.com

Oceania

Aqseptence Group Pty Ltd., Brisbane

Sales and Manufacturing Location
88 Brickyard Road,
Geebung 4034 QLD
PO Box 85, Virginia DC,
QLD 4014
Australia

Tel: +61 7 3867 5555

Fax: +61 7 3867 5566

info.johnsonscreens.au@aqseptence.com

South America

Nahuelco Argentina S.A., Buenos Aires

Sales and Manufacturing Location
Perdriel 3810, B1646GMB
San Fernando
Argentina

Tel: +54 11 4714 6699

Fax: +54 11 4714 2175

info.johnsonscreens.ar@aqseptence.com

Choose your regional contact for a product inquiry.
A sales representative will respond to you shortly via telephone or email.

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Product inquiries for countries of installation outside of the locations listed below, please contact us via email. info.johnsonscreens.us@aqseptence.com

Aqseptence Group Japan Limited, Yokohama

Sales Location
Daiwa Jisho Bldg. 74-1,
Yamashita-Cho Naka-Ku, Yokohama
231-0023 Kanagawa
Japan

Tel: +81 45 661 3575

Fax: +81 45 661 1921

info.johnsonscreens.jp@aqseptence.com

Aqseptence Group SAS, Soissons

Sales and Manufacturing Location
108 route de Reims
02200 Billy-sur-Aisne
France

Tel: +33 3 23 75 05 42

Fax: +33 3 23 75 05 43

info.johnsonscreens.fr@aqseptence.com

Aqseptence Group, Inc., New Brighton, MN

Sales and Manufacturing Location
1950 Old Hwy 8 NW,
New Brighton, MN 55112
USA

Tel: +1 651 636 3900

Fax: +1 651 638 3171

info.johnsonscreens.us@aqseptence.com

Aqseptence Group, Inc., Bakersfield, CA

Manufacturing Location
1901 E Brundage Ln,
Bakersfield, CA 93307
USA

Tel: +1 661 323 1525

Fax: +1 661 323 1606

info.johnsonscreens.us@aqseptence.com

Aqseptence Group, Inc., Forked River, NJ

Sales and Manufacturing Location
708 Challenger Way,
Forked River, NJ 08731
USA

Tel: +1 609 693 9434

Fax: +1 609 971 8708

info.johnsonscreens.us@aqseptence.com

Aqseptence Group Pty Ltd., Brisbane

Sales and Manufacturing Location
88 Brickyard Road,
Geebung 4034 QLD
PO Box 85, Virginia DC,
QLD 4014
Australia

Tel: +61 7 3867 5555

Fax: +61 7 3867 5566

info.johnsonscreens.au@aqseptence.com

Nahuelco Argentina S.A., Buenos Aires

Sales and Manufacturing Location
Perdriel 3810, B1646GMB
San Fernando
Argentina

Tel: +54 11 4714 6699

Fax: +54 11 4714 2175

info.johnsonscreens.ar@aqseptence.com

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