screw drilling tool
screw drilling tool
Screw drilling tool is a downhole power drilling tool powered by drilling fluid, and its core power component is a positive displacement motor. Hydraulic energy is converted into mechanical energy, and the rotor drives the spindle and drill bit to rotate, allowing the drill bit to drill and achieve the purpose of drilling. This drilling tool is easy to operate and has reliable performance. Drilling tools are made of oil-based mud, emulsified mud, and clay mud
- Email:Sales@machtec.cn
- Telephone+86 22 60978800
Screw drilling tool is a downhole power drilling tool powered by drilling fluid, and its core power component is a positive displacement motor. Hydraulic energy is converted into mechanical energy, and the rotor drives the spindle and drill bit to rotate, allowing the drill bit to drill and achieve the purpose of drilling. This drilling tool is easy to operate and has reliable performance. Drilling tools use various drilling fluids such as oil-based mud, emulsified mud, and clay mud as power fluids, with strong adaptability, and can be used for drilling special wells such as horizontal wells and cluster wells, greatly improving drilling speed and economic benefits. At present, in addition to the more common straight screw drilling tools, Motech can also provide the following forms of screw drilling tools:
1、可调角度弯螺杆钻具：为提高弯螺杆钻具对不同造斜率的要求，可根据需要在井上调整螺杆钻具的弯曲角度，整机的长度更短，造斜高达>1·/m.
2、等壁厚螺杆钻具：等壁厚螺杆是一种新型螺杆钻具。在深井、大位移、短半径水平井应用中显示出比常规螺杆钻具具有更大的优势。
3、耐饱和盐水泥浆螺杆钻具：为了使螺杆钻具整机在饱和盐水泥浆环境里能长时间工作，采用特殊钻具涂层，更耐腐蚀和耐磨。
4、高温型螺杆钻具：为了提高螺杆钻具定子橡胶的抗高温能力，以满足高地温梯度地区及深井，超深井井下高温条件的钻井需要，采用优质耐高温橡胶制造马达定子，可把马达耐温度提高到150. C以上。
5、密封型传动轴螺杆钻具：把普通的泥浆润滑的传动轴改为油润滑的密封传动轴，改善推力轴承和径向轴承的工作环境延长螺杆钻具整体使用寿命。
model | Outer diameter,mm | Valve ratio | series | Drilling tool length | Effective length of stator | The maximum diameter of the transmission shaft assembly,mm | Lower arm length,mm | Upper thread | Lower thread |
5LZ43×7.0 M-4 | 43 | 5:6 | 4 | 1707 | 820 | 43 | \ | 1AMMT | 1AMMT |
5LZ45×7.0 M-3 | 45 | 5:6 | 3 | 1927 | 1040 | 45 | \ | 1AMMT | 1AMMT |
5LZ54×7.0 M-3 | 54 | 5:6 | 3 | 2119 | 1130 | 54 | \ | 1REG | 1REG |
7LZ54×7.0 M-4 | 54 | 7:8 | 4 | 2699 | 1710 | 54 | \ | 1REG | 1REG |
5LZ60×7.0 M-3 | 60 | 5:6 | 3 | 3745 | 1850 | 60 | \ | 1REG | 1REG |
5LZ73×7.0 M-7 | 73 | 5:6 | 7 | 4717 | 2850 | 73 | 813 | 2 3/8REG (3-66) | 2 3/8REG (3-66) |
5LZ79×7.0 M-4 | 79 | 5:6 | 4 | 4355 | 2450 | 79 | 779 | 2 3/8REG (3-66) | 2 3/8REG (3-66) |
5LZ79×7.0 M-5 | 79 | 5:6 | 5 | 4855 | 3000 | 79 | 779 | 2 3/8REG (3-66) | 2 3/8REG (3-66) |
7LZ79×7.0 M-4 | 79 | 7:8 | 4 | 3525 | 1650 | 79 | 779 | 2 3/8REG (3-66) | 2 3/8REG (3-66) |
7LZ79×7.0 M-4 | 79 | 7:8 | 4 | 3525 | 1650 | 79 | 779 | 2 3/8REG (3-66) | 2 3/8REG (3-66) |
5LZ89×7.0 M-4 | 89 | 5:6 | 4 | 4759 | 2450 | 89 | 1103 | 2 3/8REG (3-66) | 2 3/8REG (3-66) |
4LZ95×7.0 M-5 | 95 | 4:5 | 5 | 5619 | 3050 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
5LZ95×7.0 M-3 | 95 | 5:6 | 3 | 4419 | 1850 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
5LZ95×7.0 M-5 | 95 | 5:6 | 5 | 5619 | 3050 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
5LZ95×7.0 M-7 | 95 | 5:6 | 7 | 5979 | 3410 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
7LZ95×7.0 M-3 | 95 | 7:8 | 3 | 4419 | 1850 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
7LZ95×7.0 M-10.1 | 95 | 7:8 | 10.1 | 7869 | 5300 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
7LZ95×7.0 M-6.7 | 95 | 7:8 | 6.7 | 6749 | 4180 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
9LZ95×7.0 M-4 | 95 | 9:10 | 4 | 5019 | 2450 | 95 | 1062 | NC-31 (3-86) | 2 7/8REG (3-76) |
5LZ105×7.0 M-4 | 105 | 5:6 | 4 | 4898 | 2450 | 105 | 1138 | 3 1/2REG (3-88) | 2 7/8REG (3-76) |
5LZ105×7.0 M-10.1 | 105 | 5:6 | 10.1 | 7768 | 5320 | 105 | 1138 | 3 1/2REG (3-88) | 2 7/8REG (3-76) |
7LZ105×7.0-6 | 105 | 7:8 | 6 | 6678 | 4230 | 105 | 1138 | 3 1/2REG (3-88) | 2 7/8REG (3-76) |
9LZ105×7.0 M-6 | 105 | 9:10 | 6 | 6458 | 4010 | 105 | 1138 | 3 1/2REG (3-88) | 2 7/8REG (3-76) |
7LZ108×7.0 M-6 | 108 | 7:8 | 6 | 6818 | 4370 | 108 | 1138 | 3 1/2REG (3-88) | 2 7/8REG (3-76) |
5LZ120×7.0 M-5 | 120 | 5:6 | 5 | 7192 | 4540 | 120 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
5LZ120×7.0 M-6 | 120 | 5:6 | 6 | 7892 | 5240 | 120 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ120×7.0 M-4 | 120 | 7:8 | 4 | 6282 | 3630 | 120 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ120×7.0 M-6.5 | 120 | 7:8 | 6.5 | 8522 | 5870 | 120 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ120×7.0 M-7 | 120 | 7:8 | 7 | 7092 | 4420 | 120 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ120×7.0 M-8 | 120 | 7:8 | 8 | 7692 | 5040 | 120 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
4LZ127×7.0 M-6 | 127 | 4:5 | 6 | 7052 | 4400 | 127 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
4LZ127×7.0 M-5 | 127 | 4:5 | 5 | 6332 | 3680 | 127 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
5LZ127×7.0 M-5 | 127 | 5:6 | 5 | 7022 | 4370 | 127 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ127×7.0 M-4 | 127 | 7:8 | 4 | 6282 | 3630 | 127 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ127×7.0 M-7 | 127 | 7:8 | 7 | 7092 | 4420 | 127 | 1223 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ135×7.0 M-5 | 135 | 7:8 | 5 | 7775 | 4450 | 135 | 1280 | NC-38(Z-102) | 3 1/2REG (3-88) |
7LZ140×7.0 M-5 | 140 | 7:8 | 5 | 7425 | 4100 | 140 | 1495 | NC-50 (Z-133) | 4 1/2REG (3-117) |
5LZ159×7.0 M-5 | 159 | 5:6 | 5 | 8067 | 4250 | 159 | 1939 | NC-50 (Z-133) | 4 1/2REG (3-117) |
7LZ159×7.0 M-3 | 159 | 7:8 | 3 | 7227 | 3410 | 159 | 1939 | NC-50 (Z-133) | 4 1/2REG (3-117) |
4LZ165×7.0 M-7 | 165 | 4:5 | 7 | 9257 | 5440 | 165 | 1872 | NC-50 (Z-133) | 4 1/2REG (3-117) |
5LZ165×7.0 M-4 | 165 | 5:6 | 4 | 7227 | 3410 | 165 | 1872 | NC-50 (Z-133) | 4 1/2REG (3-117) |
5LZ165×7.0 M-5 | 165 | 5:6 | 5 | 8067 | 4250 | 165 | 1872 | NC-50 (Z-133) | 4 1/2REG (3-117) |
5LZ165×7.0 M-6 | 165 | 5:6 | 6 | 8907 | 5090 | 165 | 1872 | NC-50 (Z-133) | 4 1/2REG (3-117) |
7LZ165×7.0 M-5 | 165 | 7:8 | 5 | 9617 | 5800 | 165 | 1872 | NC-50 (Z-133) | 4 1/2REG (3-117) |
4LZ172×7.0 M-7 | 172 | 4:5 | 7 | 9257 | 5440 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
5LZ172×7.0 M-4 | 172 | 5:6 | 4 | 7227 | 3410 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
5LZ172×7.0 M-5 | 172 | 5:6 | 5 | 8067 | 4250 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
5LZ172×7.0 M-6 | 172 | 5:6 | 6 | 8907 | 5090 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
6LZ172×7.0 M-6.5 | 172 | 6:7 | 6.5 | 8417 | 4600 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ172×7.0 M-5 | 172 | 7:8 | 5 | 8437 | 4620 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ172×7.0 M-5.5 | 172 | 7:8 | 5.5 | 8897 | 5080 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ172×7.0 M-6 | 172 | 7:8 | 6 | 9347 | 5530 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ172×7.0 M-5.7 | 172 | 7:8 | 5.7 | 10027 | 6210 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ172×7.0 M-7.5 | 172 | 7:8 | 7.5 | 10167 | 6350 | 172 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
3LZ178×7.0 M-6 | 178 | 3:4 | 6 | 8832 | 5090 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
4LZ178×7.0 M-7 | 178 | 4:5 | 7 | 9172 | 5440 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
5LZ178×7.0 M-4 | 178 | 5:6 | 4 | 7152 | 3410 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
5LZ178×7.0 M-5 | 178 | 5:6 | 5 | 7992 | 4250 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
5LZ178×7.0 M-6 | 178 | 5:6 | 6 | 8832 | 5090 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
5LZ178×7.0 M-7 | 178 | 5:6 | 7 | 10292 | 6560 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
6LZ178×7.0 M-6.5 | 178 | 6:7 | 6.5 | 8962 | 5230 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-5 | 178 | 7:8 | 5 | 8362 | 4620 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-5.5 | 178 | 7:8 | 5.5 | 8897 | 5080 | 178 | 1867 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-5.7 | 178 | 7:8 | 5.7 | 9952 | 6210 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-6 B | 178 | 7:8 | 6 | 9262 | 5530 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-6 I | 178 | 7:8 | 6 | 8932 | 5090 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-6 | 178 | 7:8 | 6 | 8932 | 5200 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
F7LZ178×7.0 M-6 | 178 | 7:8 | 6 | 8932 | 5200 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-7 | 178 | 7:8 | 7 | 8992 | 5260 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ178×7.0 M-7.5 | 178 | 7:8 | 7.5 | 10092 | 6350 | 178 | 1923 | 5 1/2FH (Z-147) | 4 1/2REG (3-117) |
7LZ185×7.0 M-7 | 185 | 7:8 | 7 | 9672 | 5930 | 185 | 1923 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
3LZ197×7.0 M-7 | 197 | 3:4 | 7 | 10063 | 5930 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
4LZ197×7.0 M-6 | 197 | 4:5 | 6 | 9223 | 5090 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
5LZ197×7.0 M-4 | 197 | 5:6 | 4 | 7543 | 3410 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
5LZ197×7.0 M-5 | 197 | 5:6 | 5 | 8383 | 4250 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
5LZ197×7.0 M-6 | 197 | 5:6 | 6 | 9223 | 5090 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
6LZ197×7.0 M-5 | 197 | 6:7 | 5 | 8383 | 4250 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
6LZ197×7.0 M-6 | 197 | 6:7 | 6 | 9223 | 5090 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
9LZ197×7.0 M-4 | 197 | 9:10 | 4 | 7543 | 3410 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
7LZ197×7.0 M-5 | 197 | 7:8 | 5 | 8383 | 4250 | 197 | 2184 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
4LZ203×7.0 M-6 | 203 | 4:5 | 6 | 9397 | 5090 | 203 | 2192 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
5LZ203×7.0 M-5 | 203 | 5:6 | 5 | 8857 | 4550 | 203 | 2192 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
5LZ203×7.0 M-6 | 203 | 5:6 | 6 | 9757 | 5450 | 203 | 2192 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
7LZ203×7.0 M-5 | 203 | 7:8 | 5 | 8557 | 4250 | 203 | 2192 | 5 1/2FH (Z-147) | 6 5/8REG (Z-152) |
3LZ210×7.0 M-7 | 210 | 3:4 | 7 | 10364 | 5930 | 210 | 2243 | 6 5/8REG (Z-152) | 6 5/8REG (Z-152) |
7LZ210×7.0 M-5 | 210 | 7:8 | 5 | 8704 | 4250 | 210 | 2243 | 6 5/8REG (Z-152) | 6 5/8REG (Z-152) |
7LZ210×7.0 M-7 | 210 | 7:8 | 7 | 10104 | 5650 | 210 | 2243 | 6 5/8REG (Z-152) | 6 5/8REG (Z-152) |
5LZ210×7.0 M-5 | 210 | 5:6 | 7 | 10104 | 5650 | 210 | 2243 | 6 5/8REG (Z-152) | 6 5/8REG (Z-152) |
5LZ216×7.0 M-6 | 216 | 5:6 | 6 | 9544 | 5090 | 216 | 2243 | 6 5/8REG (Z-152) | 6 5/8REG (Z-152) |
7LZ216×7.0 M-5 | 216 | 7:8 | 5 | 8704 | 4250 | 216 | 2243 | 6 5/8REG (Z-152) | 6 5/8REG (Z-152) |
5LZ228×7.0 M-6 | 228 | 5:6 | 6 | 9544 | 5090 | 228 | 2243 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) |
3LZ244×7.0 M-4 | 244 | 3:4 | 4 | 10633 | 6000 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152)/ |
3LZ244×7.0 M-6 | 244 | 3:4 | 6 | 10783 | 6210 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
F3LZ244×7.0 M-6 | 244 | 3:4 | 6 | 10783 | 6210 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
5LZ244×7.0 M-4 | 244 | 5:6 | 4 | 8663 | 4080 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
5LZ244×7.0 M-5 | 244 | 5:6 | 5 | 9673 | 5090 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
5LZ244×7.0 M-6 | 244 | 5:6 | 6 | 10683 | 6100 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
C5LZ244×7.0 M-4 | 244 | 5:6 | 4 | 9673 | 5090 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
7LZ244×7.0 M-4 | 244 | 7:8 | 4 | 8663 | 4080 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
C7LZ244×7.0 M-4 | 244 | 7:8 | 4 | 9693 | 5110 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
7LZ244×7.0 M-5 | 244 | 7:8 | 5 | 10113 | 5530 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
7LZ244×7.0 M-5.7 | 244 | 7:8 | 5.7 | 10383 | 5800 | 244 | 2371 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
3LZ286×7.0 M-4 | 286 | 3:4 | 4 | 10240 | 5170 | 286 | 2600 | 6 5/8REG (Z-152)/ | 6 5/8REG (Z-152) / |
Features and advantages:
1、 Bypass valve
It has two positions: bypass and close (as shown in Figure 1). During the drilling operation, it is in the bypass position, which allows the mud in the drill string to circulate around the non working motor and enter the annulus, so that the mud does not overflow on the wellhead during drilling. When the mud flow rate and pressure reach the standard set values, the valve core moves downward and closes the bypass valve hole. At this time, the mud flows through the motor, converting pressure energy into mechanical energy. When the mud flow rate is too low or the pump stops, the pressure generated is not enough to overcome the spring force and static friction force. The spring lifts the valve core and the bypass valve hole is in the open position again. In general, substitute joints are often used for deep wells, highly inclined wells, horizontal wells, and when using hollow rotors. (As shown in Figure 1-1)
2、 Motor assembly
It consists of a stator and a rotor. The stator is made by injecting rubber lining on the inner wall of the steel pipe. The rubber inner hole is a spiral with certain geometric parameters. The rotor is a screw with a chrome plated hard layer.
The motor assembly produced by our company has the following advantages:
1. The stator and rotor materials are made of 42CrMo integral quenching and tempering, with hardness reaching HB285-341 and HB260-300 respectively, and the mechanical properties of the materials have been greatly improved.
2. The line type can be optimized and designed according to customer requirements and usage, which can significantly improve the overall efficiency of the screw.
3. Various types of motors suitable for on-site industrial and mining conditions can be provided.
Divided by working temperature:
(1) Normal temperature stator: rated temperature is 95 ℃, with a higher temperature of 120 ℃.
(2) High temperature stator: rated temperature of 105 ℃, higher temperature of 150 ℃.
(3) Ultra high temperature stator: rated temperature of 165 ℃, higher temperature of 180 ℃.
Classified by mud type:
水基泥浆。
油基泥浆。
高饱和盐水泥浆。
4. 根据客户要求可生产加工中空转子，可增加钻头的水马力和泥浆的上返速度。(图2)
5. The interference fit size of the rotor and stator can be recommended according to different customer operating conditions, which can effectively improve the service life and work efficiency of the motor.
6. The company has successfully developed and researched equal wall thickness screw drilling tools, which have the advantages of: ① high single-stage pressure, improving system efficiency; ② Good heat dissipation characteristics improve the working life of the stator; ③ Uniform rubber expansion improves the stability of stator operation; ④ Increased the bonding area between rubber and metal, enhancing the bonding strength. The wider adaptability, more optimized structure, and lighter overall weight can effectively improve the working environment of screw drilling tools and increase their service life. (Figure 2-1)
7.根据现场工况的情况可以提供不同介质下的转子。
① Conventional rotor, chrome plated surface, suitable for water-based mud and oil-based mud;
② Tungsten carbide rotor, surface coated with tungsten carbide, suitable for saturated saltwater slurry;
③ Ceramic rotor, surface coated with ceramic, suitable for saturated saltwater slurry;
8. The company has a complete set of imported rubber testing equipment and has established a sound inspection process and methods, effectively ensuring the consistency between design, development, and production.
3、 Universal shaft:
The function of the universal joint is to convert the planetary motion of the motor into the fixed axis motion of the transmission shaft, and transmit the torque and speed generated by the motor to the transmission shaft and the drill bit. The Motec drilling tool adopts advanced ball drive universal shafts and roller drive universal shafts, which are connected by ball drive and roller drive respectively. The moving parts are sealed with rubber sleeves to isolate the drilling fluid, and special surface treatment is carried out on the working face to improve its surface hardness and high temperature resistance; The working life is correspondingly extended. (as shown in Figure 3).
After using the drilling tool, it should be immediately disassembled and the universal joint should be inspected. If the wear exceeds the maintenance standard, the relevant vulnerable parts should be replaced in a timely manner, otherwise the drilling tool may not work properly due to excessive use of the universal joint.
可调万向轴角度较大可做到0-4°，可以根据客户要求定制更大可调范围的可调壳体，以满足工程上的要求。（图3-1）
4、 Transmission shaft assembly
The function of the drive shaft is to transmit the rotational power of the motor to the drill bit, while bearing the axial and radial loads generated by the drilling pressure. Our company's drilling tool transmission shaft assembly has two structures:
(1) The pressure drop of the drill bit water hole is 7.0 MPa, and the transmission shaft assembly is composed of hard alloy radial bearings and a set of thrust bearings in the middle.
(2) The pressure drop of the drill bit water hole is 14.0MPa, and it adopts hard alloy radial bearings and diamond composite disc (PDC) flat thrust bearings, which have longer service life and higher load-bearing capacity.
The transmission shaft produced by our company is forged from 40CrNiMoA high-performance alloy steel and then processed into shape, effectively improving reliability and service life.
In order to meet the needs of drilling, our company's transmission shaft assembly is equipped with different types of stabilizers on the outer shell, including fixed and replaceable ones. The stabilizer's stabilizer bar has various forms, and users can choose to use it according to the needs of drilling technology. (Figure 4)
5、 Whole machine
The whole machine adopts three-level anti drop, making it safer and more reliable to use.
If you have any questions or support, please fill in the following information and we will reply to you as soon as possible!!