The hydraulic pump is like the "heart" of a water well drilling rig, providing power for the operation of the entire equipment. As a leading manufacturer in the industry, UNIQUE GROUP understands that choosing the right hydraulic pump for different types of drilling rigs is directly related to the efficiency, cost of drilling operations and the service life of the equipment. So, how to select the appropriate hydraulic pump for different drilling rigs?

According to different types of water well drilling rigs and drilling requirements, the selection of hydraulic pumps should consider multiple factors. The working environment, functional requirements, load requirements and depth conditions of different drilling rigs will affect the selection of hydraulic pumps. The following are the main factors to consider when selecting hydraulic pumps, with insights from UNIQUE GROUP’s decades of experience in producing drilling rigs:

Type and functional requirements of drilling rigs

Light drilling rigs and heavy drilling rigs: UNIQUE GROUP’s light drilling rigs are usually used for drilling small shallow water wells for agricultural irrigation (generally within 50 meters deep) or medium-depth wells for urban greening. The flow and pressure requirements of hydraulic pumps for them are low. In contrast, heavy drilling rigs from UNIQUE GROUP are designed for drilling deep wells in mineral exploration (which can reach hundreds or even thousands of meters deep) or in complex geological areas. They require higher pressure and flow, so the power and efficiency requirements of hydraulic pumps are higher.

Fully hydraulic drilling rigs: All actions of this type of drilling rig (such as UNIQUE GROUP’s advanced fully hydraulic models) are controlled by the hydraulic system, and a large-flow and high-pressure hydraulic pump is required to ensure the stability and efficiency of the equipment during deep well drilling.

Drilling depth

For shallow well drilling rigs (for example, less than 100 meters deep) like those produced by UNIQUE GROUP, the flow and pressure requirements of hydraulic pumps are low, and ordinary gear pumps or screw pumps can meet the needs.

For deep well drilling rigs, especially UNIQUE GROUP’s models designed for depths of 200 meters or more, the selection of hydraulic oil pumps should consider higher pressure and flow to cope with the increased friction and load during deep well drilling. High-pressure plunger pumps or variable pumps are usually selected to adapt to high-load working environments.

Pressure and flow requirements of hydraulic systems

When selecting hydraulic oil pumps, the maximum pressure and flow required by the system must be considered. The pressure of the hydraulic oil pump should be able to withstand the highest load of the drilling rig during operation. For instance, UNIQUE GROUP’s deep well drilling rigs often operate with hydraulic systems that reach 30-40MPa (megapascals) or higher, ensuring reliable performance in extreme conditions.

Selecting the right flow can ensure the response speed and working efficiency of the hydraulic system. If the flow is too low, the drilling rig will become slow or unstable; if the flow is too high, it may cause energy waste and system overload. UNIQUE GROUP’s engineering team optimizes flow parameters for each drilling rig model to balance efficiency and stability.

Oil pump type and efficiency

Gear pump: suitable for drilling rigs with low flow requirements, such as UNIQUE GROUP’s entry-level shallow well models. They feature simple structure, low cost, and are ideal for shallow well drilling or low-load operations. However, their efficiency is relatively low compared with other types of pumps.

Plunger pump: With high working pressure and flow, it is suitable for medium-deep well drilling, can provide stable hydraulic power, and ensure the normal operation of the drilling rig under complex geological conditions. UNIQUE GROUP often equips its medium-deep well rigs with high-performance plunger pumps, though their maintenance cost is relatively high.

Variable displacement pump: It is suitable for drilling rigs that need to flexibly adjust the flow, especially UNIQUE GROUP’s multi-purpose rigs designed to handle varying depths and operating conditions. This type of pump can adjust the flow according to demand, avoid energy waste and maintain the efficient operation of the hydraulic system. It has high efficiency but a more complex structure.

Working environment and service life

When selecting a hydraulic oil pump, it is necessary to consider the influence of the working environment, such as temperature, humidity, dust and other factors. UNIQUE GROUP’s drilling rigs are engineered with hydraulic pumps that have strong anti-pollution ability and good sealing to extend service life, even in harsh conditions.

In high-temperature environments, the hydraulic pump in UNIQUE GROUP’s rigs is equipped with enhanced heat dissipation systems to prevent overheating. In dusty environments, advanced filtering systems reduce impurity intake. UNIQUE GROUP prioritizes durability and easy maintenance in its pump designs, ensuring long service life and extended maintenance cycles.

In conclusion, choosing the right hydraulic pump for different types of drilling rigs is crucial. UNIQUE GROUP, with its expertise in manufacturing high-quality water well drilling rigs, integrates these considerations into every product, ensuring efficient, stable operation while reducing maintenance costs. By partnering with UNIQUE GROUP, you gain access to tailored hydraulic solutions that optimize your drilling operations. For more guidance on matching hydraulic pumps to your drilling rig, contact UNIQUE GROUP’s technical team today.