打孔保护套打孔内衬管钻孔筛管
l 打孔内衬管采用J55或N80石油套管本体加工，或者碳钢/不锈钢薄板先冲孔厚卷焊，强度高，不易变形。
l 钻孔均匀光滑、无毛刺。
l 整体进行防腐处理，在筛管的各表面形成致密的防护层，提高了筛管的抗腐蚀性及耐磨性，可有效延长其井下工作的寿命。
l 操作简单，使用方便，内通径大，易于进行管串配置。
l 钻孔类型可由客户随意选择。 http://www.hbdinuo.com
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Pipe Size
套管尺寸
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Holes per Feet
每英尺孔数
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Size of Hole
孔径
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Perforated Area per Feet
每英尺开孔面积
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3/4"
|
78
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3/16"
|
2.15
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1"
|
54
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5/16"
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4.14
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1-1/4"
|
66
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5/16"
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5.06
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1-1/2"
|
78
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5/16"
|
5.98
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2-1/16"
|
78
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5/16"
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5.98
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2-3/8"
|
90
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3/8"
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9.94
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2-7/8"
|
102
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3/8"
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11.26
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3-1/2"
|
126
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3/8"
|
13.91
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4"
|
138
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3/8"
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15.24
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4-1/2"
|
150
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3/8"
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16.56
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5"
|
162
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3/8"
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17.88
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5-1/2"
|
174
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3/8"
|
19.21
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6-5/8"
|
186
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3/8"
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20.53
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7"
|
222
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3/8"
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24.51
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9-5/8"
|
294
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3/8"
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32.46
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