The lifespan of diamond composite bits is not fixed and varies greatly depending on the application, geological conditions, product specifications, and manufacturing process. The industry standard is to describe it as a multiple of improvement compared to traditional materials. Specific data is as follows:
1. Oil and Gas/Geological Drilling (Core Application)
Conventional Formations: PDC drill bits using high-quality domestically produced diamond composite bits can achieve an overall lifespan 10-30 times that of carbide drill bits, and 20-40 times longer than traditional natural diamond drill bits. A single drill bit can typically achieve a footage of 1000-3000 meters, with the highest footage exceeding 5000 meters in soft formations.
Deep/Unconventional Oil and Gas Formations: High-end PDCs using new irregular tooth and rolling tooth designs, combined with optimized processes, can stably maintain a footage of 2000-4000 meters per drill bit. In highly abrasive formations, the lifespan is 30%-50% longer than traditional planar composite bits. Industry Record Reference: The high-end PDC drill bits used by Zhongyuan Petroleum Engineering in China once set a record of an average mechanical drilling speed of 112 meters per hour, achieving a single-trip drilling footage exceeding 6000 meters in suitable formations.
2. Cutting Tools/Machining Fields
Woodworking: PCD composite saw blades can process particleboard, MDF, and other boards with a continuous operating life of 300-400 hours and a maximum end-of-life of 4000 hours, which is 5-10 times the lifespan of ordinary carbide saw blades.
Metalworking: When machining non-ferrous metals and high-hardness non-metals, the lifespan of composite saw blades is 10-20 times that of carbide tools, enabling longer continuous machining times and reducing tool change frequency.
3. Key Factors Affecting Lifespan
Product Manufacturing Process: Products with a thicker diamond layer (2-4mm is superior to traditional products within 1mm), those using a non-planar interface structure, and those employing deep cobalt filtration technology have a longer lifespan.
Operating Conditions: Shallow soft formations have a longer lifespan than deep hard formations or high-temperature formations.
Domestic Product Progress: Currently, domestically produced PDCs have increased their market share in the domestic oil and gas drilling and production market to nearly 70%. Leading companies' products have lifespans approaching international high-end levels, demonstrating a clear cost-performance advantage.
