Core Purpose & Equipment Compatibility
This catalog features stock Kellyguard series products, specifically engineered foroil & gas drilling rigs equipped with 4” IF and 6-5/8” Reg drill pipe connections, widely applied in onshore and offshore drilling operations. Tailored to drilling contractors, rig maintenance teams, oilfield safety supervisors, and drilling equipment procurement managers, these products address the core demand of mitigating well control risks caused by high downhole pressure, drill pipe disconnection hazards, and harsh drilling environments (high temperature, corrosion, vibration). Their primary purpose is to enhance drilling safety by preventing blowout risks during kelly/drill pipe operation, ensuring compliance with high-pressure drilling standards, and minimizing unplanned downtime.
1. Kellyguard Main Body Units
Kellyguard main body units are critical safety components for high-pressure drilling operations, designed to enclose and protect the kelly joint, preventing blowout and fluid ejection in case of drill pipe connection failure. Operating under 10,000 psi working pressure, they endure extreme downhole pressure impacts, cyclic load from drilling rotation, and corrosion from drilling fluids (mud, sour gas). These units feature robust structural design and high-pressure resistance materials, ensuring reliable safety protection in critical drilling phases.
No. | Product Name | Specification | Material | Primary Wear Causes | Damage Prevention Notes |
1 | Kellyguard | 6-5/8” Reg, 10,000 psi working pressure | Main body: alloy steel (AISI 4140, heat-treated to HRC 28-32); Sealing elements: FKM (Viton) with metal reinforcement; Fasteners: stainless steel 316L | 1. High-pressure drilling fluid erosion causes wall thickness reduction and seal wear; 2. Cyclic vibration from drilling rotation leads to structural fatigue and fastener loosening. | 1. Inspect the main body for corrosion and wall thickness loss every 50 drilling days; replace if wear exceeds 10% of nominal thickness; 2. Tighten fasteners with torque wrench to specified values before each drilling cycle and recheck periodically. |
2 | Kellyguard | 4” IF, 10,000 psi working pressure | Main body: alloy steel (AISI 4130, quenched and tempered); Sealing elements: nitrile rubber (NBR) reinforced with aramid fiber; Fasteners: alloy steel grade 8.8 with zinc plating | 1. Sour gas (H₂S) corrosion in downhole environments causes material degradation; 2. Improper installation leads to uneven pressure distribution and localized stress damage. | 1. For sour gas well applications, conduct H₂S corrosion resistance testing annually; 2. Ensure precise alignment during installation to avoid eccentric loading; use alignment tools to verify fit with drill pipe connections. |
2. Kellyguard Drill Pipe Stabbing Valve
Kellyguard Drill Pipe Stabbing Valve is an essential safety accessory for high-pressure drilling, installed on drill pipe connections to provide rapid pressure isolation in case of emergency. Operating at 10,000 psi, it endures high-pressure fluid impact, mechanical wear during stabbing operations, and corrosion from drilling mud and formation fluids. This valve features quick-acting closure and reliable sealing performance, ensuring immediate well control to prevent blowout risks during drill pipe makeup/breakout.
No. | Product Name | Specification | Material | Primary Wear Causes | Damage Prevention Notes |
1 | Kellyguard Drill Pipe Stabbing Valve | 4” IF, 10,000 psi working pressure | Valve body: forged alloy steel (AISI 4140); Valve core: tungsten carbide; Sealing ring: PTFE-enhanced FKM; Spring: 65Mn alloy steel (heat-treated) | 1. High-velocity drilling fluid containing solid particles causes valve core erosion; 2. Frequent stabbing operations lead to wear of the valve seat and sealing surface. | 1. Install a downstream filter to reduce solid particle content in drilling fluid; inspect valve core erosion monthly; 2. Avoid rough stabbing operations; use guide tools to minimize mechanical impact on the valve seat. |
Procurement Guidance
All stock Kellyguard products in this catalog are manufactured in strict compliance with API Spec 7K (Drilling and Well Servicing Equipment) and API Spec 16A (Wellhead and Christmas Tree Equipment) standards, ensuring perfect compatibility with 4” IF and 6-5/8” Reg drill pipe connections and reliable performance under 10,000 psi high-pressure conditions. For drilling operations aiming to enhance safety, comply with industry regulations, and secure readily available high-quality spare parts, these stock products provide a convenient and trustworthy solution. We invite you to contact our professional sales team to discuss your specific procurement needs, confirm stock availability, obtain detailed technical specifications, and secure authentic, industry-compliant Kellyguard components tailored to your drilling rig maintenance and safety requirements.
Technical Reference Standards
All products adhere to international and industry authoritative standards, including API Spec 7K (Drilling and Well Servicing Equipment), API Spec 16A (Wellhead and Christmas Tree Equipment), ISO 14692 (Petroleum and Natural Gas Industries - Glass-Reinforced Plastic (GRP) Pipes and Fittings for Downhole Use), and ISO 9001 Quality Management System Certification. Each component undergoes rigorous quality testing, including high-pressure burst testing (150% of rated pressure), dimensional accuracy verification, corrosion resistance testing (H₂S and salt spray), and sealing performance evaluation under simulated drilling conditions. For detailed installation guidelines, maintenance procedures, and technical support, please consult our dedicated technical team to ensure optimal component performance and drilling operational safety.
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