Methods to improve the drilling efficiency of pneumatic water well drilling rig:
Optimize drilling parameters
Adjust the appropriate drilling pressure. The pressure is too low, and the drill bit cannot effectively penetrate the formation, resulting in slow drilling speed; Excessive pressure can accelerate the wear of the drill bit and may even cause the drill rod to bend or break. Generally speaking, in soft soil layers, the drilling pressure can be relatively low, usually 5-10kN; In hard rock formations, it is necessary to increase the pressure appropriately, which can reach 15-30kN. The specific value should be adjusted according to the actual geological conditions and the performance of the drilling rig.
Control the reasonable drilling speed. If the rotation speed is too fast, it will intensify the friction between the drill bit and the formation, generate too much heat, and lead to increased wear of the drill bit; Slow rotation speed can also affect drilling efficiency. For example, in soft soil layers, the rotational speed can be controlled between 100-200r/min; In hard rock formations, the rotational speed should be reduced to 50-100r/min. Meanwhile, adjustments should be made according to the type and diameter of the drill bit, and the rotational speed of large-diameter drill bits should be appropriately reduced.
Ensure sufficient air flow. The air volume is the power source of the pneumatic water well drilling rig, and sufficient air volume can provide enough energy for the impactor to effectively break the rock with the drill bit. Generally, the appropriate air compressor is selected based on the model of the drilling rig and the diameter of the drill bit to ensure that the air volume meets the drilling requirements. Usually, for drill bits with a diameter of 150-200mm, the air flow rate of the air compressor should reach 6-10m ³/min.
Main technical parameters of 200 meter pneumatic drilling rig:
Model | Shitan ST 200 |
Max drilling depth | M | 200 |
Drilling diameter | mm | 105-350 |
Air pressure | Mpa | 1.2-3.5 |
Rod length | m | 3 |
Rod diameter | mm | 76-89(Multiple specifications to choose from) |
Main shaft pressure | T | 4 |
Lifting force | T | 18 |
Power head stroke | M | 40 |
Max rotary torque | Nm | 5900 |
Max rotary speed | r/min | 30-120 |
Secondary winch liftng force | T | 1 |
Jacks stroke | m | 1.35 |
Moving speed | km/h | 2.5 |
Uphill angle | Slope | 21° |
Weight of the rig | T | 5.5 |
The engine | Xidong 65kw |
Overall dimensions | 4400*2150*2200mm |
Optimize equipment selection and configuration
Reasonable selection: Select a suitable model and specification of pneumatic water well drilling rig based on actual construction needs and geological conditions. Do not blindly pursue high-performance and large-sized equipment, in order to avoid wasting resources and increasing costs. For example, for shallow water wells with soft geological conditions, choosing a small and moderately powered drilling rig can meet the requirements.
Optimize configuration: When selecting a drilling rig, the rationality of its supporting equipment should be considered. The power and air volume of the air compressor should be matched with the drilling rig to avoid energy waste or low drilling efficiency caused by the air compressor being too large or too small. At the same time, choosing reliable and cost-effective drill rods, drill bits and other accessories can ensure construction quality and reduce procurement costs.
Strengthen equipment maintenance and upkeep
Regular maintenance: Develop a strict equipment maintenance plan and maintain the drilling rig according to the specified time and requirements. Regular maintenance can promptly identify and address potential issues with equipment, prevent minor failures from escalating into major ones, and reduce maintenance costs and downtime. For example, regularly changing engine oil, filters, lubricating grease, etc., inspecting key components of equipment such as impactors, cylinders, etc., to ensure that they are in good working condition.
Extend component lifespan: By proper operation and maintenance, extend the service life of vulnerable components in equipment. During the drilling process, adjust the drilling parameters reasonably according to the geological conditions to avoid excessive wear of components such as drill bits and drill rods. At the same time, appropriate protective measures can be taken for some parts that are prone to wear, such as applying wear-resistant coatings on the surface of the drill rod to extend its service life and reduce the cost of replacing parts.
Improve personnel operational skills
Professional training: Provide professional training to drilling rig operators to familiarize them with equipment performance, operating procedures, and maintenance knowledge. Skilled operators are able to operate equipment correctly, avoiding equipment damage or malfunction caused by misoperation, thereby reducing maintenance costs and equipment wear and tear. For example, training operators on how to select appropriate drilling parameters based on different geological conditions, and how to correctly start and stop equipment.
Skill enhancement: Encourage operators to continuously learn and improve their skills, and master the diagnosis and handling methods of some common faults. In this way, when equipment malfunctions, operators can make preliminary judgments and handle them in a timely manner, reduce waiting time for maintenance personnel, improve equipment utilization, and reduce cost losses caused by equipment downtime.
Reasonably plan the construction process
Preparation before construction: Before construction, a detailed survey and planning of the construction site should be carried out to develop a reasonable construction plan. Clarify the parameters such as drilling location, depth, and quantity to avoid unnecessary changes and repetitive work during the construction process, improve construction efficiency, and reduce costs. For example, planning the movement route of the drilling rig reasonably to reduce the idle and handling time of the equipment.
Construction process management: During the construction process, it is necessary to arrange the construction sequence and schedule reasonably to avoid the drilling rig being idle or overused for a long time. At the same time, it is necessary to strengthen on-site management, ensure smooth cooperation and coordination among construction personnel, and improve construction efficiency. For example, assigning a dedicated person to be responsible for the loading and unloading of equipment and auxiliary work, so that drilling operators can focus on drilling work and improve work efficiency.