There are three types of DU series Drill Pipe Slips: DU, DUL and SDU. They are with large handling range and light weight. Thereinto, SDU slips have larger contacting areas on the taper and higher resistance strength. They are designed and manufactured according to API Spec 7K Specification for drilling and well servicing equipment.
技术参数 Technical Parameters
型号Mode |
卡瓦体尺寸Slip Body Size(in) |
|||||
4 1/2 |
5 1/2 |
7 |
||||
钻杆尺寸DP OD |
钻杆尺寸DP OD |
钻杆尺寸DP OD |
||||
in |
mm |
in |
mm |
in |
mm |
|
DU |
2 3/8 |
60.3 |
3 1/2 |
88.9 |
4 1/2 |
114.3 |
2 7/8 |
73 |
4 |
101.6 |
5 |
127 |
|
3 1/2 |
88.9 |
4 1/2 |
114.3 |
5 1/2 |
139.7 |
|
4 |
101.6 |
5 |
127 |
6 5/8 |
168.3 |
|
4 1/2 |
114.3 |
5 1/2 |
139.7 |
7 |
177.8 |
|
DUL |
2 3/8 |
60.3 |
3 1/2 |
88.9 |
4 1/2 |
114.3 |
2 7/8 |
73 |
4 |
101.6 |
5 |
127 |
|
3 1/2 |
88.9 |
4 1/2 |
114.3 |
5 1/2 |
139.7 |
|
4 |
101.6 |
5 |
127 |
6 5/8 |
168.3 |
|
4 1/2 |
114.3 |
5 1/2 |
139.7 |
7 |
177.8 |
|
SDU |
|
|
3 1/2 |
88.9 |
4 1/2 |
114.3 |
|
|
4 |
101.6 |
5 |
127 |
|
|
|
4 1/2 |
114.3 |
5 1/2 |
139.7 |
|
|
|
5 |
127 |
6 5/8 |
168.3 |
|
|
|
5 1/2 |
139.7 |
7 |
177.8 |