SD型钻杆卡瓦适用的钻杆直径为2-3/8~5-1/2in(60.3 ~139.7mm),按卡瓦牙于钻杆的接触长度分为短型(SDS)、中型(SDML)和加长型(SDXL)。SDS适用于浅井、SDML适用于中深井,SDXL适用于深井。
型号 |
卡瓦体尺寸 |
31/2 |
4-1/2 |
SDS |
钻杆直径 |
in |
2-3/8 |
2-7/8 |
3-1/2 |
3-1/2 |
4 |
4-1/2 |
Mm |
60.3 |
73.0 |
88.9 |
88.9 |
101.6 |
114.3 |
重量 |
Kg |
53.1 |
50.3 |
48.5 |
64.9 |
61.7 |
57.6 |
b |
117 |
111 |
107 |
143 |
136 |
127 |
SDML |
钻杆直径 |
In |
2-3/8 |
2-7/8 |
3-1/2 |
3-1/2 |
4 |
4-1/2 |
Mm |
60.3 |
73.0 |
88.9 |
88.9 |
101.6 |
114.3 |
重量 |
Kg |
87.5 |
85.3 |
81.6 |
94 |
90.3 |
85.3 |
lb |
193 |
188 |
180 |
207 |
199 |
188 |
SDXL |
钻杆直径 |
in |
- |
- |
- |
3-1/2 |
4 |
4-1/2 |
mm |
- |
- |
- |
88.9 |
101.6 |
114.3 |
重量 |
kg |
- |
- |
- |
103.9 |
99.3 |
93 |
lb |
- |
- |
- |
229 |
219 |
205 |
型号 |
卡瓦体尺寸 |
5 |
5-1/2 |
SDML |
钻杆直径 |
in |
4 |
4-1/2 |
5 |
4-1/2 |
5 |
5-1/2 |
mm |
101.6 |
114.3 |
127 |
114.3 |
127 |
139.7 |
重量 |
Kg |
92.5 |
88.9 |
84 |
90.9 |
84 |
82.1 |
lb |
204 |
196 |
185 |
200 |
185 |
181 |
SDXL |
钻杆直径 |
in |
4 |
4-1/2 |
4 |
4-1/2 |
5 |
5-1/2 |
mm |
101.6 |
114.3 |
127 |
114.3 |
127 |
139.7 |
重量 |
kg |
107.5 |
103 |
96.6 |
106.1 |
101.5 |
95.3 |
lb |
237 |
227 |
213 |
234 |
224 |
210 | |