The interconnecting lift, in the specific context of drilling operations, is a specialized lifting device designed for connecting and lifting tubular materials (such as drill pipe, casing, and tubing). In the complex and safety-critical drilling environment, it plays a crucial role, providing safe, efficient, and reliable lifting and positioning functions while maintaining excellent flexibility and adaptability during frequent drilling operations, ensuring the smooth progress of drilling work.
Main Functions
Safe Lifting and Transport: Utilizing an advanced linkage mechanism, it can safely and stably lift and transport various tubular components. During lifting, it ensures that the pipes do not sway or slip, enabling quick connection and release, while providing a firm grip on the pipes during drilling operations, ensuring operational safety.
Precise Positioning Assistance: When lowering or retrieving pipes into or from the well, this equipment provides precise positioning support, helping operators accurately place the pipes in the designated position, improving the accuracy and efficiency of drilling operations.
Product Features
DH type single arm elevator links are one-piece forged from structural alloy steel with high strength and high toughness, especially suitable to be used in deep and ultra deep well drilling operation.
SH type double arm elevator links are made of high-grade alloy steel with good mechanical properties by means of forging or welding process and they are suitable for the shallow well drilling operation.
Robust and Durable Structure: Manufactured using high-strength alloy steel through precision forging and heat treatment. This process gives the product excellent load-bearing capacity, capable of withstanding the immense weight and complex stresses of pipe fittings during drilling operations. It also possesses excellent wear and fatigue resistance, maintaining good performance even under long-term high-load working conditions and withstanding harsh downhole environments such as high temperatures, high pressures, and corrosive fluids.
Flexible and Reliable Connections: The connection design ensures smooth engagement and disengagement of pipe fittings, reducing jamming and impact during operation and minimizing the risk of pipe wear or damage. Operators can easily and quickly connect and disconnect pipe fittings, improving work efficiency.
High Adaptability: This equipment has wide applicability, compatible with drill pipes, casing, and tubing of different sizes and weights. It operates stably and reliably on both onshore drilling platforms and offshore drilling systems, meeting the needs of various complex drilling conditions.
Product types and specifications：
Technical parameter table 1
| Model | DH900 | DH750 | DH500 | DH350 | DH250 | DH150 | DH75 | DH50 | DH40 | |
| Rated load of a pair kN (US tons) | 9000 | 6750 | 4500 | 3150 | 2250 | 1350 | 675 | 450 | 360 | |
| Main size,
mm (in) |
d | 139.7 | 114 | 90 | 76 | 65 | 54 | 45 | 40 | 40 |
| r | 160 | 130 | 86 | 70 | 70 | 51 | 51 | 51 | 60 | |
| b | 270 | 195 | 172 | 140 | 140 | 102 | 102 | 102 | 102 | |
| G | 445 | 320 | 257 | 203 | 203 | 152 | 152 | 152 | 152 | |
| E | 210 | 185 | 152 | 130 | 130 | 95 | 72 | 65 | 58 | |
| R | 155 | 140 | 130 | 114 | 114 | 102 | 90 | 80 | 90 | |
| R1 | 69.85 | 63.5 | 40 | 35 | 35 | 29 | 29 | 20 | 20 | |
| C | 320 | 264 | 242 | 203 | 203 | 140 | 140 | 120 | 130 | |
| H | 650 | 528 | 432 | 373 | 373 | 260 | 250 | 220 | 214 | |
| F | 445 | 370 | 305 | 254 | 254 | 210 | 195 | 180 | 210 | |
| Φ | 152.4 | 140 | 114 | 89 | 76 | 60 | 50 | 46 | 40 | |
| J | 25 | 50 | 50 | 35 | 30 | 25 | 20 | 20 | 20 | |
| L | 4880 | 4570 | 3660 | 3300 | 2700 | 1800 | 1500 | 1100 | 1200 | |
| Weight per Pair, kg | 2190 | 1700 | 690 | 462 | 300 | 118 | 82 | 62 | 56 | |
Technical parameter table 2
| Model | SH150 | SH75 | SH50 | SH30 | |
| Rated load of a pair
kN (US tons) |
1350(150) | 675(75) | 450(50) | 270(30) | |
| Main size
mm (in) |
d | 65(2.6) | 50(1) | 45(1.8) | 40(1.57) |
| r | 60(2.36) | 60(2.36) | 50(1) | 50(1) | |
| E | 90(3.5) | 70(2.75) | 60(2.36) | 40(1.57) | |
| R | 65(2.6) | 80(3.15) | 63.5(2.45) | 50(1) | |
| R1 | 29(1.14) | 25(1) | 22.5(0.89) | 20(0.79) | |
| J | 35(1.38) | 20(0.79) | 20(0.79) | 20(0.79) | |
| L* | 1700(67) | 1500(59) | 1100(43) | 1100(43) | |
| Weight per Pair, kg (lbs) | 204(444) | 130(283) | 68(150) | 48(106) | |
Applications
Onshore Drilling Platforms: Widely used in drilling operations in various onshore oil and gas fields for lifting and transporting drill pipes, casing, tubing, and other pipe materials, improving the safety and efficiency of drilling operations while reducing manual labor intensity and operational risks.
Offshore Drilling Systems: On offshore drilling platforms, the more complex and harsher operating environment places higher demands on the reliability and adaptability of the transport elevator. This equipment can operate stably, providing strong support for offshore drilling operations and ensuring the development of offshore oil and gas resources.
Geological Exploration Drilling: In the field of geological exploration, it is used for lifting and transporting drill pipes and other pipe materials in drilling wells, helping geological exploration personnel accurately obtain underground geological information and providing support for resource exploration and geological research.
With its superior performance, reliable quality, and wide range of applications, the transport elevator has become an indispensable piece of equipment in drilling operations. As drilling technology continues to develop and the requirements for operational safety and efficiency increase, the transport elevator will continue to play an important role, constantly innovating and optimizing to adapt to the industry’s development needs.
