扩孔锚杆钻具
螺杆钻具是以泥浆、清水为动力介质，通过钻杆中心孔输送到孔底，实质上是把液体压力转换为机械能的一种能量转换装置。钻探时，螺杆钻具直接带动连接在其孔底传动轴上的岩心管和钻头回转，整个钻杆柱仅为输送高压工作介质的通道和支撑钻头反扭矩的杆件，不作回转运动。采用螺杆钻具钻探与常规钻探相比有许多优点，如钻杆磨损大幅度下降，钻速高。它是打定向孔的主要器具，在钻探领域已发挥作用。
→ 钻井液输入流量与螺杆钻具输出转速成正比。
→ 螺杆钻具输出扭矩与钻井液通过马达产生的压力降呈线性关系。
→ 螺杆钻具旋转动力用来驱动钻头，减少钻杆磨损。
→ 螺杆钻具与转盘钻井相比转速快，有利于提高机械转速。
→ 可与转盘复合钻井，提高转速，提高钻井效率。
→ 轴承采用碳化钨焊接，使用寿命更长。
→ 可实现井深轨迹的定向控制，更容易控制井眼方向，能比转盘钻井减小钻井偏差。
螺杆钻具技术参数
| 钻具型号 | 连接螺纹 | 排量 | 转速 | 工作压力降 | 输出扭矩 | 最大压力降 | 最大扭矩 | 工作钻压 | 最大钻压 | 输出功率 |
| 5LZ73X7.0-3 | 2 3/8REG | 162-578 | 121-432 | 2.4 | 460 | 3.39 | 650 | 12 | 25 | 27 |
| 5LZ73X7.0-4 | 2 3/8REG | 162-578 | 121-432 | 3.2 | 613 | 4.52 | 867 | 12 | 25 | 36 |
| 5LZ79X7.0-4 | 2 3/8REG | 162-578 | 121-432 | 3.2 | 613 | 4.52 | 867 | 12 | 25 | 36 |
| 7LZ79X7.0-4 | 2 3/8REG | 140-419 | 138-413 | 3.2 | 465 | 4.52 | 617 | 12 | 25 | 24 |
| 5LZ89X7.0-4 | 2 3/8REG | 255-766 | 108-325 | 3.2 | 1080 | 4.52 | 1526 | 22 | 35 | 47 |
| 7LZ89X7.0-3.8 | 2 3/8REG | 170-490 | 74-251 | 3.04 | 952 | 4.29 | 1342 | 22 | 35 | 28 |
| 5LZ95X7.0-3 | 2 7/8REG | 320-800 | 124-300 | 2.4 | 833 | 3.39 | 1177 | 30 | 55 | 32 |
| 5LZ95X7.0-5 | 2 7/8REG | 320-800 | 124-300 | 4 | 1388 | 5.65 | 1962 | 30 | 55 | 53 |
| 7LZ95X7.0-3 | 2 7/8REG | 389-778 | 167-335 | 2.4 | 710 | 3.39 | 1000 | 30 | 55 | 32 |
| 7LZ95-7.0-10.1 | 2 7/8REG | 300-680 | 150-340 | 8.08 | 2212 | 11.41 | 3125 | 30 | 55 | 100 |
| 7LZ95X7.0-6.7 | 2 7/8REG | 300-610 | 126-257 | 5.36 | 1738 | 7.57 | 2455 | 30 | 55 | 60 |
| 5LZ105X7.0-4 | 2 7/8REG | 450-900 | 146-292 | 3.2 | 1248 | 4.52 | 1656 | 30 | 55 | 46 |
| 5LZ120X7.0-3 | 3 1/2REG | 694-1388 | 140-278 | 2.4 | 1620 | 3.39 | 2288 | 49 | 100 | 57 |
| 5LZ120X7.0-4 | 3 1/2REG | 694-1388 | 140-278 | 3.2 | 2160 | 4.52 | 2869 | 49 | 100 | 71 |
| 5LZ120X7.0-5 | 3 1/2REG | 650-1300 | 140-280 | 4 | 2344 | 5.65 | 3312 | 49 | 100 | 87 |
| 7LZ120X7.0-4 | 3 1/2REG | 745-1489 | 130-261 | 3.2 | 2468 | 4.52 | 3277 | 49 | 100 | 75 |
| 7LZ120X7.0-6.5 | 3 1/2REG | 745-1489 | 130-261 | 5.2 | 4010 | 7.35 | 5325 | 49 | 100 | 122 |
| 7LZ120X7.0-7 | 3 1/2REG | 516-1030 | 128-256 | 5.6 | 2829 | 7.91 | 3997 | 49 | 100 | 85 |
| 5LZ127X7.0-3 | 3 1/2REG | 694-1388 | 140-278 | 2.4 | 1620 | 3.39 | 2286 | 49 | 100 | 57 |
| 5LZ127X7.0-4 | 3 1/2REG | 694-1388 | 140-278 | 3.2 | 2160 | 4.52 | 2869 | 49 | 100 | 71 |
| 5LZ127X7.0-5 | 3 1/2REG | 650-1300 | 140-280 | 4 | 2344 | 5.65 | 3312 | 49 | 100 | 87 |
| 7LZ127X7.0-4 | 3 1/2REG | 745-1489 | 130-261 | 3.2 | 2468 | 4.52 | 3277 | 49 | 100 | 75 |
| 7LZ127X7.0-7 | 3 1/2REG | 516-1030 | 128-256 | 5.6 | 2629 | 7.91 | 3997 | 49 | 100 | 85 |
| 5LZ140X7.0-4 | 4 1/2REG | 718-1436 | 101-202 | 3.2 | 2613 | 4.52 | 3471 | 49 | 100 | 73 |
| 7LZ140X7.0-5 | 4 1/2REG | 794-1587 | 95-190 | 4 | 3848 | 5.65 | 5436 | 49 | 100 | 98 |
| 5LZ159X7.0-5 | 4 1/2REG | 828-1656 | 88-177 | 4 | 4221 | 5.65 | 5962 | 80 | 160 | 111 |
| 7LZ159X7.0-3 | 4 1/2REG | 828-1656 | 67-135 | 2.4 | 3775 | 3.39 | 5332 | 80 | 160 | 68 |
| 5LZ165X7.0-3.5 | 4 1/2REG | 686-1371 | 87-174 | 2.8 | 2555 | 3.955 | 3609 | 80 | 160 | 66 |
| 5LZ165X7.0-4 | 4 1/2REG | 862-1724 | 87-174 | 3.2 | 3673 | 4.52 | 4878 | 80 | 160 | 88 |
| 5LZ165X7.0-5 | 4 1/2REG | 862-1724 | 87-174 | 4 | 4590 | 5.65 | 6484 | 80 | 160 | 100 |
| 5LZ165X7.0-6 | 4 1/2REG | 862-1724 | 87-174 | 4.6 | 5509 | 6.78 | 7781 | 80 | 160 | 121 |
| 7LZ165X7.0-3.8 | 4 1/2REG | 1200-2400 | 51-103 | 3.04 | 8975 | 4.3 | 12700 | 80 | 160 | 123 |
| 5LZ172x7.0-4 | 4-1/2REG | 947-1894 | 78-154 | 3.2 | 4160 | 4.52 | 5525 | 100 | 170 | 126 |
| 5LZ172x7.0-5 | 4-1/2REG | 947-1894 | 78-154 | 4 | 5200 | 5.65 | 7345 | 100 | 170 | 118 |
| 5LZ172x7.0-6 | 4-1/2REG | 947-1894 | 78-154 | 4.8 | 6240 | 6.78 | 8814 | 100 | 170 | 142 |
| 7LZ172x7.0-5 | 4-1/2REG | 1183-2366 | 84-168 | 4 | 7176 | 5.65 | 10137 | 100 | 170 | 150 |
| 7LZ172x7.0-5.5 | 4-1/2REG | 1183-2366 | 84-168 | 4.4 | 7895 | 6.22 | 11160 | 100 | 170 | 176 |
| 7LZ172x7.0-5.7 | 4-1/2REG | 1183-2366 | 76-152 | 4.56 | 9030 | 6.44 | 12750 | 100 | 170 | 170 |
| 5LZ178x7.0-4 | 4-1/2REG | 947-1894 | 78-154 | 3.2 | 4160 | 4.52 | 5525 | 100 | 170 | 126 |
| 5LZ178x7.0-5 | 4-1/2REG | 947-1894 | 78-154 | 4 | 5200 | 5.65 | 7345 | 100 | 170 | 118 |
| 5LZ178x7.0-6 | 4-1/2REG | 947-1894 | 78-154 | 4.8 | 6240 | 6.78 | 8814 | 100 | 170 | 142 |
| 7LZ178x7.0-5 | 4-1/2REG | 1183-2366 | 84-168 | 4 | 7176 | 5.65 | 10137 | 100 | 170 | 150 |
| 5LZ185x7.0-5 | 4-1/2REG 6 5/8 REG |
985-1970 | 91-182 | 4 | 5548 | 5.65 | 7836 | 100 | 170 | 134 |
| 5LZ197x7.0-4 | 5-1/2REG 6 5/8 REG |
1113-2225 | 79-158 | 3.2 | 5022 | 4.52 | 6700 | 150 | 200 | 99 |
| 5LZ197x7.0-5 | 5-1/2REG 6 5/8 REG |
1113-2225 | 79-158 | 4 | 6277 | 5.65 | 8866 | 150 | 200 | 130 |
| 5LZ197x7.0-6 | 5-1/2REG 6 5/8 REG |
1113-2225 | 79-158 | 4.8 | 7533 | 6.78 | 10640 | 150 | 200 | 157 |
| 7LZ197x7.0-5 | 5-1/2REG 6 5/8 REG |
1230-2460 | 75-150 | 4 | 7220 | 5.65 | 10197 | 155 | 200 | 130 |
| 5LZ203x7.0-4 | 5-1/2REG 6-5/8REG |
1113-2225 | 79-158 | 3.2 | 5022 | 4.52 | 6700 | 155 | 250 | 99 |
| 5LZ203x7.0-5 | 5-1/2REG 6-5/8REG |
1113-2225 | 79-158 | 4 | 6277 | 5.65 | 8866 | 155 | 250 | 130 |
| 5LZ203x7.0-5 | 6-5/8REG 6-5/8REG |
1320-3410 | 86-230 | 4 | 8220 | 5.65 | 11615 | 155 | 250 | 223 |
| 5LZ203x7.0-6 | 5-1/2REG 6-5/8REG |
1320-3410 | 86-230 | 4.8 | 9290 | 6.78 | 13320 | 155 | 250 | 130 |
| 7LZ203x7.0-5 | 5-1/2REG 6-5/8REG |
1230-2460 | 75-150 | 4 | 7220 | 5.65 | 10197 | 155 | 250 | 143 |
| 5LZ210x7.0-5 | 6-5/8REG | 1228-2455 | 75-150 | 4 | 7481 | 5.65 | 10567 | 180 | 300 | 149 |
| 5LZ216x7.0-4 | 6-5/8REG | 1228-2455 | 72-145 | 3.2 | 6105 | 4.52 | 8108 | 180 | 300 | 112 |
| 5LZ216x7.0-5 | 6-5/8REG | 1228-2455 | 72-145 | 4 | 7631 | 5.65 | 10607 | 180 | 300 | 147 |
| 5LZ216x7.0-6 | 6-5/8REG | 1228-2455 | 72-145 | 4.8 | 10267 | 6.78 | 14502 | 220 | 330 | 198 |
| 5LZ228x7.0-5 | 6-5/8REG | 1228-2455 | 72-145 | 4 | 7631 | 5.65 | 10607 | 180 | 300 | 147 |
| 5LZ228x7.0-6 | 6-5/8REG 6-5/8REG (7-5/8REG) |
1228-2455 | 72-145 | 4.8 | 10267 | 6.78 | 14502 | 220 | 300 | 198 |
| 5LZ244x7.0-4 | 6-5/8REG 6-5/8REG (7-5/8REG) |
1650-3300 | 64-129 | 3.2 | 9114 | 4.52 | 12105 | 220 | 330 | 147 |
| 5LZ244x7.0-5 | 6-5/8REG 6-5/8REG (7-5/8REG) |
1650-3300 | 64-129 | 4 | 11393 | 5.65 | 16092 | 220 | 330 | 195 |
| 5LZ244x7.0-6 | 6-5/8REG 6-5/8REG (7-5/8REG) |
1650-3300 | 64-129 | 4.8 | 13670 | 6.78 | 19310 | 220 | 330 | 234 |
| 7LZ244x7.0-4 | 6-5/8REG 6-5/8REG (7-5/8REG) |
1775-3550 | 61-122 | 3.2 | 10300 | 4.52 | 14550 | 220 | 330 | 167 |
| 7LZ244x7.0-5 | 6-5/8REG 6-5/8REG (7-5/8REG) |
2270-4540 | 68-135 | 4 | 15950 | 5.65 | 24030 | 220 | 330 | 310 |
| 7LZ244x7.0-5.7 | 6-5/8REG 6-5/8REG (7-5/8REG) |
2270-4160 | 72-132 | 4.56 | 20600 | 6.44 | 29090 | 220 | 330 | 330 |
