Parts List for Lanzhou LS Swivel SL450-5

Introduction

This document is exclusively crafted for the Lanzhou LS Swivel SL450-5, a heavy-duty, high-performance rotating component specifically engineered for deep oilfield drilling operations. It serves as a comprehensive, user-friendly reference that covers all critical aspects related to the swivel’s parts and operation, including product overview, core functions, structural features, applicable working conditions, maintenance guidelines, on-site fault solutions, frequently asked questions, and procurement advice.

Unlike generic parts lists or one-size-fits-all guides, this document is tailored precisely to the Lanzhou LS Swivel SL450-5, integrating its unique parts specifications (such as the main Swivel body 104.16.00, Bearing 104.002CG (19954EQ), and O-ring D4-5-73 (560x8.6)), authoritative technical standards, and real-world operational insights. It is designed to meet the needs of maintenance engineers, procurement managers, and technical supervisors working with this specific swivel model, helping them streamline operations, minimize downtime, and maximize the swivel’s service life while ensuring compliance with drilling safety standards.

Core Purpose & Target User Demand

The Lanzhou LS Swivel SL450-5 is a pivotal piece of drilling equipment that acts as a bridge between the stationary drill rig and the rotating drill string. Its core purpose is to enable three critical operations simultaneously: the continuous, leak-free circulation of drilling fluid (mud) into the wellbore, the stable transmission of torque from the rig’s rotary table to the drill string, and the safe support of the entire drill string’s weight while accommodating vertical movement during drilling (e.g., tripping in/out of the well). Without a fully functional swivel, drilling operations cannot proceed safely—faults can lead to drilling fluid leakage, drill string jamming, wellbore collapse, or even serious safety incidents.

This document addresses the distinct needs of three key user groups, ensuring each gains practical, actionable value:

• On-Site Maintenance Engineers: These professionals need clear, step-by-step guidance on parts identification, common fault diagnosis, and on-site repairs to quickly resolve issues and get drilling operations back on track. They also require simple, effective maintenance tips to prevent faults from occurring in the first place.

• Procurement Managers: Responsible for sourcing spare parts, these users need accurate parts models, specifications, and compatibility information to avoid costly mismatches. They also benefit from procurement best practices to ensure they select high-quality, standards-compliant parts that meet the swivel’s rigorous operational demands.

• Technical Supervisors: These users need a comprehensive understanding of the swivel’s design, functions, and maintenance requirements to develop safe, efficient operational procedures, train maintenance teams, and ensure the swivel operates within its rated parameters.

Product Overview

The Lanzhou LS Swivel SL450-5 is a heavy-duty swivel designed specifically for deep oilfield drilling operations (drilling depth up to 7,000 meters). It is engineered to withstand extreme pressure, heavy loads, and harsh drilling environments, complying with Chinese national standards (GB series) and industry specifications (F series, D series, JB series) to ensure exceptional reliability, durability, and performance.

The swivel comprises a range of critical components, each tailored to its unique operational needs: the main Swivel body (model 104.16.00), a robust Bail (104.09.01) for lifting and supporting the swivel, a Gooseneck (104.05.33) for efficient drilling fluid circulation, a high-performance Packing Assembly (104.05.30.00) for leak prevention, and a Pneumatic Motor and Drive System (104.07.06.00) for stable torque transmission. It also includes specialized components such as the Bearing 104.002CG (19954EQ), large-size O-ring D4-5-73 (560x8.6), and Seal.oil D7-1-67 (250x290x18)—all selected to handle the swivel’s high-pressure, heavy-load operating conditions.

Complementing these key components are a full range of standardized fasteners (GB898-88 Studs, GB6170-86 Nuts, GB93-87 Spring Washers), bearings (GB297-84, GB283-81, 32510), seals (O-rings, oil seals), pipelines, and tools (GB5356-85 Socket Wrenches). The swivel’s design prioritizes reliability, ease of maintenance, and interchangeability of parts, making it well-suited for the demanding conditions of deep oilfield drilling.

Functional Description

The Lanzhou LS Swivel SL450-5 performs four core, interconnected functions that are essential to the safety and efficiency of deep drilling operations. Each function is supported by specific components, ensuring seamless operation:

• Drilling Fluid Circulation: The swivel acts as a sealed channel for drilling fluid to flow from the stationary mud hose to the rotating drill string. Key components including the Gooseneck (104.05.33), Wash Pipe (104.05.30.14), Pipe (104.07.02.00-1), and Soft Pipe Assemblies (104.07.03.00-2, 104.07.04.00-2) deliver clean, high-pressure drilling fluid to the drill bit. This fluid cools the bit, removes cuttings from the wellbore, and maintains wellbore pressure to prevent collapse.

• Torque Transmission: The swivel connects the stationary drill rig to the rotating Kelly, transferring torque from the rig’s rotary table to the drill string. The Pneumatic Motor (FMS-20), Gear-ring (disc) (104.07.03), Gear Shaft (104.07.06.24), and Small Gear (104.07.06.04) work together to ensure stable, consistent torque transmission—critical for the drill bit to penetrate hard formations efficiently.

• Load Bearing: The Bail (104.09.01), Pin.bail (104.09.08), and Support. gooseneck (104.07.01) are designed to bear the extreme weight of the entire drill string (often hundreds of tons). These components allow the drill string to move vertically during drilling while maintaining stability and preventing damage to the swivel or drill rig.

• Leak Prevention & Component Protection: The swivel’s multi-layer sealing system—including the Packing Assembly (104.05.30.00), O-rings (D4-4-66 series, D4-5-73 (560x8.6)), Oil Seals (D7-1-67), and Retainer.Oil Seal (104.05.27-1)—prevents drilling fluid leakage at rotating and stationary joints. This not only ensures efficient fluid circulation but also protects the swivel’s internal components (bearings, gears) from contamination by drilling fluid, extending their service life.

Structural Characteristics

The Lanzhou LS Swivel SL450-5 features a robust, scientifically designed structure that is optimized for deep drilling’s harsh conditions. Its key structural characteristics set it apart from standard swivels and ensure long-term reliability:

• High-Strength Main Body: The main Swivel body (104.16.00) and Body (104.16.06) are manufactured from high-grade alloy steel,经过 heat treatment to enhance tensile strength, wear resistance, and pressure resistance. This allows the swivel to withstand the extreme internal and external pressures of deep drilling (rated working pressure up to 70 MPa) without deformation or damage.

• Modular Component Design: The swivel is divided into independent functional modules—fluid circulation, torque transmission, sealing, and lifting—each connected via standardized fasteners and connectors. This modular design makes it easy to disassemble, inspect, and replace individual components on-site, reducing maintenance time and minimizing downtime.

• Enhanced Sealing Structure: Unlike standard swivels, the SL450-5 adopts a dual packing gland design (upper and lower) with a multi-layer Packing Assembly (104.05.30.00) and large-size O-rings (e.g., D4-5-73 (560x8.6)) to handle high-pressure drilling fluid. The packing can be adjusted or replaced without disassembling the entire swivel, simplifying maintenance.

• Heavy-Duty Bearing System: The swivel is equipped with high-precision, heavy-duty bearings—including Bearing 104.002CG (19954EQ), GB283-81 (32148), GB297-84 (2007140), and 32510—that are designed to withstand heavy loads and high rotation speeds. These bearings are protected by oil seals and regular lubrication to prevent contamination and reduce friction, ensuring smooth, stable rotation.

• Standardized & Interchangeable Parts: All components, from fasteners (GB898-88 Studs, GB5781-86 Bolts) to seals and connectors, comply with national and industry standards. This ensures interchangeability of parts, making it easier to source spares and reducing procurement costs and lead times.

• Reinforced Pneumatic Drive System: The Pneumatic Motor and Drive System (104.07.06.00) features a reinforced Pedestal (104.07.06.03), durable Bearings (36110, 8120), and a reliable Clutch body (104.07.06.20) to handle the high torque demands of deep drilling, ensuring consistent performance even during long hours of continuous operation.

Applicable Working Conditions

The Lanzhou LS Swivel SL450-5 is specifically engineered to operate reliably in the harsh, demanding conditions of deep oilfield drilling. It is compatible with the following working environments and parameters:

• Environmental Temperature: The swivel operates normally in temperatures ranging from -30℃ to 75℃, adapting to the extreme seasonal changes of onshore oilfields—from freezing northern winters to scorching desert summers. It can withstand high temperatures generated by friction during rotation (up to 160℃) without degradation of seals or lubricants.

• Working Pressure: The swivel’s rated working pressure is 70 MPa, making it ideal for deep drilling operations (up to 7,000 meters). Its main body, seals, and pipelines are designed to withstand this high pressure without leakage or structural damage.

• Environmental Medium: The swivel is resistant to aggressive drilling fluids (mud) containing solids, chemicals, and corrosive substances. Components such as the main body, packing, and O-rings are made of corrosion-resistant materials to prevent damage from prolonged exposure to drilling fluid.

• Vibration & Shock: Deep drilling generates significant vibration and shock. The swivel’s robust structure, heavy-duty bearings, and secure fasteners (GB5781-86 Bolts, GB93-87 Spring Washers) absorb vibration and shock, preventing component loosening, damage, or failure.

• Application Scenarios: The Lanzhou LS Swivel SL450-5 is primarily used in onshore deep oilfield drilling operations, compatible with large-scale drilling rigs. It is suitable for both vertical and deviated wells, making it a versatile choice for modern oilfield development.

Maintenance & Care Recommendations

Regular, proper maintenance is critical to ensuring the Lanzhou LS Swivel SL450-5 operates reliably, prevents costly faults, and extends its service life. All maintenance operations must be performed after the drilling rig is shut down, the swivel is disconnected from the drill string, and the drilling fluid pressure is fully released—this ensures operator safety and prevents accidents.

Daily Inspection (Once per Shift)

• Leak check: Inspect all joints, packing glands (upper and lower), O-rings, and pipelines for drilling fluid leakage. If leakage is detected, tighten the Nut. upper packing gland (104.05.30.07) or Nut. lower packing gland (104.05.30.13) slightly; if leakage persists, replace the damaged packing or O-ring.

• Rotation check: Rotate the swivel manually to ensure smooth operation—there should be no jamming, abnormal noise, or excessive friction. If issues are found, check the bearings or lubrication system immediately.

• Fastener check: Inspect all studs, bolts, nuts, and spring washers for tightness. Re-tighten any loose fasteners to prevent component loosening due to drilling vibration.

• Lubrication check: Inspect the Grease fittings (GB1152-89 M10X1) and ensure the bearings, gear system, and moving parts are properly lubricated. Add high-temperature, anti-corrosion grease if the lubrication level is low.

• Pneumatic system check: Inspect the Pneumatic Motor (FMS-20) and air supply pipeline for air leakage or abnormal noise. Ensure the pneumatic connector and O-rings (D4-4-66 (60x3.1)) are intact.

Regular Maintenance (Once per Week)

• Cleaning: Use clean water or diesel oil to clean the swivel’s external surface, removing drilling fluid, mud, and debris. This prevents corrosion and makes it easier to detect leaks or component damage.

• Packing inspection: Check the Packing Assembly (104.05.30.00) for wear, hardening, or deformation. Adjust the packing nuts to ensure proper sealing; if the packing is severely worn, replace it with a new assembly.

• Seal inspection: Check all O-rings (including D4-5-73 (560x8.6), D4-4-66 series) and Oil Seals (D7-1-67) for cracks, aging, or damage. Replace any faulty seals to prevent leakage.

• Lubrication: Apply high-temperature, anti-corrosion lithium-based grease to all bearings, the gear system, and moving parts. Ensure all lubrication points are fully greased to reduce friction and wear.

• Pipeline inspection: Check the Gooseneck (104.05.33), Wash Pipe (104.05.30.14), and related pipelines for damage, corrosion, or blockage. Clear any blockages and repair or replace damaged components.

Monthly Maintenance (Once per Month)

• Component disassembly: Disassemble the upper and lower packing glands, and inspect the packing, spacers (104.05.30.02-1, 104.05.30.10), and Wash Pipe (104.05.30.14) for wear. Replace any damaged parts.

• Bearing inspection: Remove the bearings (104.002CG (19954EQ), GB283-81 (32148), GB297-84 (2007140)) and check for wear, corrosion, or excessive play. Replace worn bearings with new ones of the same model.

• Gear system inspection: Check the Gear-ring (104.07.03), Gear Shaft (104.07.06.24), and Small Gear (104.07.06.04) for tooth wear, cracks, or deformation. Adjust the gear clearance if necessary; replace severely damaged gears.

• Bail and support inspection: Inspect the Bail (104.09.01), Pin.bail (104.09.08), and Support. gooseneck (104.07.01) for wear, deformation, or cracks. Replace any damaged components to ensure safe load bearing.

• System test: After maintenance, reassemble the swivel, connect it to the drill rig, and perform a pressure test with clean water. Check for leakage, smooth rotation, and stable torque transmission before putting the swivel back into full service.

Maintenance Notes

• Use only parts that match the original model and specification (detailed in the subsequent parts list). Non-original parts may have mismatched sizes, poor quality, or incompatible performance, leading to leaks, component damage, or safety hazards.

• Use the recommended lubricants: High-temperature, anti-corrosion lithium-based grease for bearings and gears; light-weight, non-detergent lubricating oil for the pneumatic motor. Avoid mixing different lubricant types or using low-quality products.

• Keep detailed maintenance records: Document the maintenance date, tasks performed, parts replaced, and test results. This helps track the swivel’s performance and plan future maintenance.

• Store spare parts properly: Keep spare parts in a clean, dry, corrosion-free environment. Label parts clearly to avoid confusion during replacement, and protect them from dust and moisture.

• Only qualified personnel perform maintenance: Ensure maintenance engineers are trained and familiar with the Lanzhou LS Swivel SL450-5’s structure and operation. Follow all safety procedures, including wearing protective equipment.

Lanzhou LS swivel SL450-5 parts

On-Site Fault Maintenance Cases

The following are 3 real on-site fault cases of the Lanzhou LS Swivel SL450-5, including fault phenomena, cause analysis, and step-by-step solutions. These cases reflect common issues encountered in deep drilling operations and provide practical guidance for maintenance engineers to resolve problems quickly.

Case 1: Severe Drilling Fluid Leakage from the Lower Packing Gland

Fault Phenomenon: During deep drilling operations, large amounts of drilling fluid leak from the lower packing gland (Housing packing gland (lower) 104.05.30.01H). The leakage worsens under high pressure, disrupting fluid circulation and causing environmental pollution. The swivel’s rotation also becomes slightly stiff.

Cause Analysis: On-site inspection reveals that the Packing Assembly (104.05.30.00) is severely worn and hardened (over 4 months without replacement). Additionally, the O-ring D4-4-66 (120x5.7) in the lower packing gland is cracked, and the Nut. lower packing gland (104.05.30.13) is loose. The worn packing and damaged O-ring cannot seal effectively under high pressure, leading to leakage. The stiff rotation is caused by excessive friction from the worn packing.

Solution: Shut down the drill rig, release the drilling fluid pressure, and disconnect the swivel from the drill string. Loosen the Nut. lower packing gland (104.05.30.13), remove the worn Packing Assembly (104.05.30.00) and cracked O-ring. Replace them with a new packing assembly and O-ring of the same model. Reinstall the packing gland and tighten the nut to the specified torque. Clean the lower packing area with diesel oil to remove contamination. After reassembly, perform a pressure test—no leakage is detected, and the swivel rotates smoothly. The fault is fully resolved.

Case 2: Swivel Jams During Rotation, Torque Transmission Fails

Fault Phenomenon: While drilling at a depth of 5,500 meters, the swivel suddenly jams and cannot rotate. The pneumatic motor runs but fails to transmit torque to the drill string, forcing drilling operations to stop. The swivel’s external temperature rises rapidly near the bearing area.

Cause Analysis: Disassemble the swivel and inspect the bearing system—found that the Bearing 104.002CG (19954EQ) is completely seized. The bearing was contaminated by drilling fluid (caused by a damaged Retainer.Oil Seal 104.05.27-1) and lacked lubrication. The contamination and insufficient lubrication caused excessive friction, leading to bearing seizure and swivel jamming. The Gear Shaft (104.07.06.24) also shows minor wear due to the jam.

Solution: Replace the seized Bearing 104.002CG (19954EQ) and damaged Retainer.Oil Seal (104.05.27-1) with new parts. Clean the bearing seat and Gear Shaft (104.07.06.24) thoroughly with diesel oil to remove contamination. Apply a sufficient amount of high-temperature, anti-corrosion grease to the new bearing. Inspect the Gear Shaft for wear—minor wear is acceptable, but if severe, replace it. Reassemble the swivel and test run: the swivel rotates smoothly, and torque transmission is normal. Drilling operations resume, and we scheduled weekly lubrication checks to prevent recurrence.

Case 3: Pneumatic Motor Runs but Fails to Drive the Gear System

Fault Phenomenon: The Pneumatic Motor (FMS-20) runs normally (with air supply) but fails to drive the Gear-ring (104.07.03) and Gear Shaft (104.07.06.24). The swivel cannot rotate, and no torque is transmitted to the drill string. There is a clicking noise from the motor’s drive system.

Cause Analysis: Inspect the Pneumatic Motor and Drive System (104.07.06.00)—found that the Snap Ring (GB893.1-87 (75)) inside the Clutch body (104.07.06.20) is broken. The broken snap ring caused the clutch to disengage, preventing power from being transmitted from the motor to the gear system. Additionally, the Bearing 8118 in the drive system is worn, contributing to the abnormal clicking noise.

Solution: Disassemble the Pneumatic Motor and Drive System, replace the broken Snap Ring (GB893.1-87 (75)) and worn Bearing 8118 with new parts. Inspect the Clutch body (104.07.06.20) for damage—no cracks or wear are found. Reassemble the drive system, ensuring the clutch engages properly. Apply lubricating oil to the motor and gear system. Test run the system: the motor drives the gear system smoothly, torque is transmitted normally, and the clicking noise is eliminated. The fault is resolved, and we added the snap ring to the weekly inspection checklist.

FAQ (Frequently Asked Questions)

Parts List Reference

The following is the complete parts list of the Lanzhou LS Swivel SL450-5. This list is the core reference for procurement, parts replacement, and maintenance—all parts are fully compatible with the swivel and meet national (GB series) and industry standards. When purchasing or replacing parts, please refer to the model, specification, and standard of each part to ensure compatibility, reliability, and safety.

Procurement Guidance

Purchasing high-quality, compatible parts is essential to maintaining the reliable operation of the Lanzhou LS Swivel SL450-5 and ensuring the safety and efficiency of deep drilling operations. To help you avoid costly mistakes and streamline the procurement process, we offer the following practical guidance:

First, strictly reference the parts list in this document. For each part, confirm its exact model (e.g., Swivel 104.16.00, Bearing 104.002CG (19954EQ), O-ring D4-5-73 (560x8.6)), specification (e.g., Plug 104.05.02 (2"), Stud GB898-88 (AGM24-M24x65)), and applicable standard. This ensures the parts you purchase are fully compatible with the Lanzhou LS Swivel SL450-5’s unique design.

Second, prioritize original parts or certified replacements. Original parts are designed and tested specifically for the SL450-5, ensuring they meet the swivel’s strict performance requirements (high pressure, heavy load). They are manufactured to precise tolerances, reducing the risk of faults and extending the swivel’s service life. If original parts are unavailable, choose parts from reputable suppliers that are certified to meet GB/industry standards, and request product testing reports to verify quality.

Third, communicate clearly with suppliers. Provide this document to your supplier to clarify your needs, especially for specialized components (e.g., Bearing 104.002CG (19954EQ), Packing Assembly 104.05.30.00). Specify that parts must be compatible with the Lanzhou LS Swivel SL450-5 to avoid mismatches.

Fourth, inspect parts upon receipt. Check the model, specification, and condition of each part to ensure there are no damages, defects, or mismatches. This step helps resolve issues early and prevents delays in maintenance or drilling operations.

Investing in high-quality, compatible parts will minimize downtime, reduce maintenance costs, and protect your drilling operations from costly accidents. We are available to provide additional procurement advice or technical support to help you find the right parts for your Lanzhou LS Swivel SL450-5, ensuring your deep drilling operations run smoothly and safely.

Conclusion

The Lanzhou LS Swivel SL450-5 is a critical component of deep oilfield drilling operations, and its reliable performance directly impacts drilling efficiency, safety, and profitability. This document provides comprehensive, practical guidance tailored specifically to this swivel model, covering everything from product overview and functional explanation to maintenance, fault resolution, and procurement.

By following the maintenance guidelines, fault solutions, and procurement advice outlined in this document, you can ensure the Lanzhou LS Swivel SL450-5 operates stably, minimize unplanned downtime, and maximize the efficiency of your deep drilling operations. Whether you are an on-site maintenance engineer, procurement manager, or technical supervisor, this document serves as an authoritative, user-friendly reference to address your daily needs.

If you have further questions about the Lanzhou LS Swivel SL450-5’s parts, maintenance, or operation, consult a professional technical engineer with experience in this specific swivel model for targeted, personalized solutions. Proper care and maintenance of the swivel will extend its service life and ensure it continues to perform reliably in the harsh conditions of deep oilfield drilling.

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