RC drilling in water well construction has become a core technology in modern water well engineering, particularly suitable for efficient well completion under complex geological conditions. This article provides a detailed introduction to the technical characteristics and application advantages of this efficient process.

I. Working Principles of RC Drilling in Water Well Construction

The essence of RC drilling in water well construction lies in its unique cuttings removal method, as shown in Figure 1:

Impact Crushing System:

1. High-frequency impact bit operates at 60-100 impacts per minute

2. Dual-wire balancing design ensures stable bit operation

3. Direct energy transfer to rock formations increases fragmentation efficiency by 40% compared to conventional rotary drilling

Reverse Circulation Cuttings Removal System:

1. Mud pump creates negative pressure, transporting cuttings upward through the drill pipe's central channel

2. Surface mud pit enables cuttings settlement and mud circulation

3. Cuttings removal speed reaches 3-5m/s, 2-3 times faster than direct circulation

This RC drilling in water well construction process significantly reduces bottom hole sediment and improves well completion quality.

II. Technical Advantages of RC Drilling in Water Well Construction

Compared to traditional methods, RC drilling in water well construction offers these significant advantages:

1. High Drilling Efficiency: 6-10m/hour penetration rate in gravel formations

2. Superior Well Quality: Smooth and regular well walls with 30% reduced porosity

3. Cost Savings: 50% less mud consumption and 40% shorter construction period

4. Strong Adaptability: Effective in high water table and quicksand conditions

RC drilling in water well construction is particularly suitable for:

1. Agricultural irrigation wells

2. Industrial deep water wells

3. Geothermal well construction

4. Mine drainage wells

III. Key Parameters for RC Drilling in Water Well Construction

Successful implementation of RC drilling in water well construction requires control of these parameters (as shown in Table 2):

1. Drilling Depth: ≤300m (Hengwang rig standard configuration)

2. Hole Diameter: ≤1200mm (custom larger sizes available)

3. Drill Pipe Specification: 219×2000mm high-strength seamless pipe

4. Power Configuration: Weichai 150KW engine set

5. Derrick Height: 7m optimized design balancing stability and transport convenience

IV. Introduction to Hengwang Group's 8-inch Rear-axle Truck-mounted Drill Rig

Hengwang Group's 8-inch rear-axle truck-mounted drill rig is an ideal equipment for RC drilling in water well construction, featuring:

Core Configuration

1. Power System: Weichai high-pressure common rail engine with 15% improved fuel efficiency

2. Hydraulic System: Load-sensitive control reduces pressure loss by 20%

3. Derrick Structure: High-strength steel truss withstands 8-level winds

4. Intelligent Control: Real-time drilling parameter monitoring with automatic alarm protection

Equipment Features

1. Generator: Ensures stable power supply

2. Starter Motor: Quick start system

3. Winch: Efficient drill tool lifting

4. Control Levers: Ergonomic operation design

5. Hydraulic Oil Tank: Large capacity for continuous operation

6. Power Distribution Box: Safe and reliable power distribution

Complete Machine Parameters

1. Drilling Depth: ≤300m

2. Hole Diameter: ≤1200mm

3. Drill Pipe Specification: 219×2000mm

4. Engine Power: 150KW

5. Overall Dimensions: 9.5×2.4×3.2m

6. Weight: 23T

Conclusion

RC drilling in water well construction, with its efficient, economical and reliable characteristics, is becoming the mainstream technology for water well development. Hengwang Group's 8-inch rear-axle truck-mounted drill rig provides the perfect solution for RC drilling in water well construction through its optimized power system, intelligent control system and stable structural design.