Views: 0 Author: Site Editor Publish Time: 2025-10-11 Origin: Site
In the field of infrastructure construction, rotary drilling rigs, as core equipment, account for 30%-40% of fuel consumption in construction costs. Improving fuel efficiency can not only reduce costs but also minimize equipment wear and extend service life. By combining the operating principles of the equipment with actual construction scenarios, optimization measures can be implemented from the following three aspects.
The health status of the equipment directly affects fuel consumption. Data shows that the fuel efficiency of rotary drilling rigs with improper maintenance can decrease by 15%-20%. First, it is necessary to regularly inspect the engine fuel system to ensure that the fuel injector atomization effect meets the standard — when the wear of the fuel injector exceeds 0.1mm, the fuel atomization is insufficient, leading to a decrease in combustion efficiency by 8%-12%, and timely replacement or calibration is required. Secondly, attention should be paid to the hydraulic system, where the viscosity of the hydraulic oil needs to match the construction environment temperature. For example, using 46# anti-wear hydraulic oil in low-temperature environments ranging from -10℃ to 5℃ can reduce the no-load loss of the hydraulic pump, lowering system energy consumption by 5%-8%; at the same time, the hydraulic oil tank filter element should be cleaned regularly to avoid pressure loss caused by impurity blockage, which would result in additional fuel consumption. In addition, the tire pressure/tension of the tires or tracks also need to be standardized. A 10% insufficient tire pressure will increase the driving resistance by 15%, indirectly leading to an increase in fuel consumption.
Operators' operating habits have a significant impact on fuel efficiency, and standardized operations can reduce fuel consumption by 10%-15%. During drilling operations, it is necessary to avoid instantaneous high-load operations such as 'flooring the throttle'. The engine speed should be controlled within the economical range — most rotary drilling rigs have an economical speed of 1800-2200r/min, where fuel combustion efficiency is highest. This range saves fuel by 12% compared to idle conditions (800-1000r/min) and 20% compared to high-speed conditions (over 2500r/min). At the same time, the lifting and lowering speed of the drill string should be reasonably controlled, and drilling parameters should be adjusted according to geological hardness: when working in clay layers, the drill string speed can be set to 25-30r/min, and the feed speed to 5-8cm/min, to avoid frequent start-up and shutdown of the equipment caused by mismatched parameters; while in gravel layers, the speed can be appropriately increased to 35-40r/min to reduce fuel waste caused by drill bit jamming. In addition, the engine should be turned off promptly during operation intervals. Data shows that the fuel consumed idling for 30 minutes is approximately equal to the fuel consumed during normal operation for 10 minutes. Turning off the engine during long stops (over 15 minutes) can effectively save fuel.
Scientific job planning can reduce equipment deadheading and waiting time, thereby indirectly improving fuel efficiency. Before construction, job areas should be divided in combination with geological survey reports, and drilling tasks of the same depth and diameter should be concentrated to avoid frequent adjustment of equipment positions —— data shows that reasonable planning of job routes can reduce 30% of deadheading distance, and saving 1 kilometer of deadheading can save 0.8-1.2 liters of fuel. At the same time, the required drilling tools and auxiliary materials for drilling should be prepared in advance to avoid equipment idling due to waiting for materials; in addition, equipment maintenance time can be reasonably arranged according to the construction progress to avoid sudden failures of equipment during high-load operations, thus reducing fuel waste and project delays caused by maintenance shutdowns.
