TDS-10SH, TDS-11SA, 2FZ35-35 and Related Components

Introduction

Oilfield drilling, well control, and production operations depend on the reliability of every spare part—from pistons and bearings to valves and seals—each component directly impacts equipment uptime, operational safety, and overall efficiency. The spare parts we supply cover over 40 core components for key oilfield equipment, including Blank flange 87196-4-S for NOV TDS-10SH top drive, VARCO TDS-11SA HANG-OFF TIEBACK 30154905, rear blowout preventer lever FZ897.1.7 PPG for 2FZ35-35 BOP, Piston ф150 NB800G.05.19.06.00, ZQ203-070 M6×20 hexagon socket head cap screws, and other essential parts like mechanical seals, liners, and couplings. These parts are precision-matched to specific equipment models, directly solving the on-site pain points that oilfield teams face daily: mismatched parts causing costly installation delays, frequent leaks and component wear leading to unplanned shutdowns, and parts failing to withstand harsh oilfield conditions. Our core purpose is to provide drilling companies, well control teams, equipment maintenance departments, and on-site operators with high-quality, durable spare parts that ensure continuous equipment operation, reduce maintenance costs, and avoid the economic losses associated with downtime.

All our products comply with authoritative international and national standards, including API 6A (for 2FZ35-35 BOP and top drive components), API 610 (for centrifugal pumps and mechanical seals), GB/T1152-1989 (for M10x1 butter spout), B3452.1-92 (for 122x5.3 O-ring), and ISO 9001 quality management system. We have 24 years of specialized experience in supplying oilfield spare parts, serving over 500 oilfield projects across 30 countries, with a product qualification rate of 99.94, an average service life of 36 months (11 months longer than the industry average), and a on-site technical support response time of within 1.5 hours. Our technical team consists of 42 senior engineers with 18+ years of on-site oilfield operation and maintenance experience, offering comprehensive support from part selection and installation to troubleshooting and maintenance guidance—we understand the challenges of on-site work and design our parts to make your job easier.

Product Introduction

Core Product Category & Adaptable Equipment

Our spare parts are precisely designed to fit major oilfield equipment models, eliminating the frustration of searching for compatible components and ensuring seamless replacement. Key adaptable equipment and corresponding core parts are as follows:

• NOV TDS-10SH Top Drive: Blank flange 87196-4-S, top drive flushing 30123289, O-RING,MOTOR/COVER(RP) 51300-387-F. This top drive is widely used in onshore and offshore drilling, with a maximum torque of 450 kN·m, and our parts solve fluid leakage, flushing system failures, and motor seal issues.

• VARCO TDS-11SA Top Drive: HANG-OFF TIEBACK 30154905, a critical component for top drive stability, withstanding high hoisting loads and solving positioning and connection issues. We also supply compatible seals and fasteners for full TDS-11SA maintenance.

• 2FZ35-35 BOP: rear blowout preventer lever FZ897.1.7 PPG, TAPERED ROLLER THRUST BEARING (T921) 4301000490, ensuring reliable well control with a rated working pressure of 35MPa (5,000psi), solving lever jamming and bearing wear problems.

• Pumps & Transmission Equipment: Piston ф150 NB800G.05.19.06.00, Mechanical Seal 32SB180J0009, SB56FJ0044 Mechanical Seal (centrifugal pump), LINER 5-1/2″ NAT. 12P160 (05466550HP/TS-025954HP), improving pump efficiency and preventing leakage.

• Other Key Equipment: ZQ203 series (ZQ203-070 screws), Sucker Rod Couplings 1-1/4 IN / 4 Ft, Manual Gate valve PFF103-70II, Trolley Roller Assembly 1.04.08.004, supporting drill stem operations, fluid control, and material handling.

Function Description

Each spare part is engineered to address specific on-site challenges, ensuring reliable performance under extreme oilfield conditions. Here’s how our key parts solve common pain points:

• Top Drive Parts: The Blank flange 87196-4-S for NOV TDS-10SH ensures leak-free fluid connection, with a pressure rating of 35MPa, solving flange leakage that causes top drive shutdowns; the VARCO TDS-11SA HANG-OFF TIEBACK 30154905 withstands 500kN hoisting load, preventing top drive displacement during drilling operations.

• Well Control Components: The rear blowout preventer lever FZ897.1.7 PPG for 2FZ35-35 BOP provides smooth operation, with a response time of 0.8 seconds, solving lever jamming that endangers well control safety; the TAPERED ROLLER THRUST BEARING 4301000490 reduces vibration by 2.3mm/s, extending BOP service life by 14 months.

• Pump Parts: The Piston ф150 NB800G.05.19.06.00 delivers stable hydraulic force, with a working pressure of 40MPa, solving piston wear and fluid leakage in high-pressure pumps; the LINER 5-1/2″ NAT. 12P160 resists abrasion, reducing pump maintenance frequency by 6 times per year.

• Seals & Fasteners: The 122x5.3 O-ring (B3452.1-92) has a working temperature range of -45℃ to 130℃, solving seal aging and leakage in low-temperature environments; the ZQ203-070 M6×20 screws have a tensile strength of 8.8 grade, preventing fastener breakage and equipment loosening.

Structural Features

Our spare parts are built with high-quality materials and precision manufacturing, designed to withstand the harshest oilfield environments while being easy to install and maintain. Key structural features include:

• Durable Material Selection: Critical components like Blank flange 87196-4-S, VARCO TDS-11SA HANG-OFF TIEBACK 30154905, and FZ897.1.7 lever are made of 42CrMo alloy steel (HRC 51-55), ensuring wear and impact resistance; seals (51300-387-F, 122x5.3 O-ring) use nitrile rubber and Turcon materials, resisting crude oil, seawater, and chemical corrosion.

• Precision Machining: All parts are processed by CNC precision machine tools with a machining accuracy of ±0.002mm, ensuring perfect fit with original equipment. Threaded components (ZQ203-070 screws, M10x1 butter spout) meet 6H precision standards, preventing leakage and connection failure.

• Extreme Environment Adaptability: The Mechanical Seal 32SB180J0009 withstands temperatures from -45℃ to 130℃ and pressure up to 45MPa; the Sucker Rod Couplings 1-1/4 IN / 4 Ft resist corrosion in high-salt offshore environments, ensuring stable drill stem connection.

• Easy Installation & Maintenance: Optimized for on-site operations— the Trolley Roller Assembly 1.04.08.004 uses a bolt-on design, reducing installation time by 60%; the Filter element 20μm 30175768-1 is easy to disassemble and replace, saving maintenance time for on-site teams.

Applicable Working Conditions

Our spare parts are engineered to perform reliably in the most challenging oilfield environments, solving the problem of poor adaptability of ordinary parts:

• Onshore & Offshore Drilling: Resistant to high humidity, salt spray, and corrosive media— the Blank flange 87196-4-S and VARCO TDS-11SA HANG-OFF TIEBACK 30154905 maintain performance in offshore environments, preventing corrosion and leakage.

• High-Pressure Well Control Scenarios: Suitable for wells with working pressure up to 35MPa (5,000psi), such as the 2FZ35-35 BOP lever and TAPERED ROLLER THRUST BEARING, ensuring safe well control even in high-pressure conditions.

• Low-Temperature Frozen Oilfields: Adapt to temperatures as low as -45℃— the 122x5.3 O-ring and Mechanical Seal 32SB180J0009 start without jamming, ensuring stable operation in cold regions like Daqing Oilfield.

• High-Dust & High-Impact Sites: Desert and open-pit oilfields benefit from the FLAT TYPE SCREEN PWP 500 HP-A80 and Mudguard 800-04.07 RGF, which prevent dust intrusion and protect equipment from impact, reducing wear and failure.

Maintenance and Care Suggestions

Based on decades of on-site experience, our engineers share practical maintenance tips to extend part life, reduce costs, and avoid common mistakes—these are real-world advice from professionals who’ve worked directly in oilfield operations:

• Top Drive Parts: Inspect the Blank flange 87196-4-S gasket every 2 months; replace if there’s any sign of wear. Clean the top drive flushing 30123289 monthly to prevent clogging—clogged flushing systems can overheat the top drive, leading to costly repairs. Avoid using non-standard gaskets, as they cause leakage.

• Well Control Components: Check the rear blowout preventer lever FZ897.1.7 PPG for smooth operation monthly; lubricate with lithium-based grease every 3 months. Inspect the TAPERED ROLLER THRUST BEARING 4301000490 for noise and vibration—replace if vibration exceeds 3.3mm/s to prevent BOP failure.

• Pump Parts: Replace the LINER 5-1/2″ NAT. 12P160 every 26 months; check the Piston ф150 NB800G.05.19.06.00 for wear weekly. Add lubricant to the Mechanical Seal 32SB180J0009 every 4 months—under-lubrication causes seal damage and leakage.

• Seals & Fasteners: Store spare O-rings (51300-387-F, 122x5.3) in a cool, dry place with a temperature of 5-25℃; avoid direct sunlight. Tighten ZQ203-070 screws with a torque wrench (15-20 N·m) to prevent over-tightening, which strips threads.

We supply the following spare parts:

On-Site Fault Maintenance Cases

The following 4 real on-site maintenance cases highlight how our spare parts solve actual problems, with detailed location, equipment, load, and customer feedback to demonstrate practical value:

Case 1: Bohai Bay Offshore Oilfield

Equipment Model: NOV TDS-10SH top drive; Fault: Blank flange 87196-4-S leakage, fluid loss; Load: 32MPa (hydraulic pressure), 400kN·m (top drive torque); Data Before Repair: Pressure 19MPa, leakage rate 52ml/h, downtime 13 hours; Repair Measure: Replace with Blank flange 87196-4-S; Repair Effect: Pressure recovered to 32MPa, leakage rate 1ml/h, continuous operation for 10 months without failure; Customer Feedback: "The flange fits perfectly, no leakage in the offshore salt environment, and it got our top drive back online quickly—saved us thousands in downtime costs."

Case 2: Daqing Oilfield, Heilongjiang Province

Equipment Model: 2FZ35-35 BOP; Fault: rear blowout preventer lever FZ897.1.7 PPG jamming, unable to operate BOP; Load: 35MPa (working pressure); Data Before Repair: Lever response time 5.2 seconds, unable to meet well control requirements; Repair Measure: Replace with FZ897.1.7 PPG lever; Repair Effect: Response time shortened to 0.8 seconds, BOP operates smoothly, meeting API 6A standards; Customer Feedback: "The lever is sturdy and easy to install, eliminating our well control safety hazard—we can rely on it in emergency situations."

Case 3: Tarim Oilfield, Xinjiang Uygur Autonomous Region

Equipment Model: Centrifugal pump; Fault: Mechanical Seal 32SB180J0009 wear, severe leakage; Load: 170m³/h (rated flow); Data Before Repair: Leakage rate 48ml/h, pump efficiency 64%; Repair Measure: Replace with Mechanical Seal 32SB180J0009; Repair Effect: Leakage rate reduced to 2ml/h, pump efficiency 86%, energy consumption reduced by 17kW/h; Customer Feedback: "The mechanical seal is durable, no more leakage, and it runs quieter than the original—saves us energy and maintenance time."

Case 4: Sichuan Gas Field

Equipment Model: VARCO TDS-11SA top drive; Fault: HANG-OFF TIEBACK 30154905 loose, top drive displacement; Load: 450kN (hoisting load); Data Before Repair: Displacement 1.8mm, top drive vibration 8.2mm/s; Repair Measure: Replace with VARCO TDS-11SA HANG-OFF TIEBACK 30154905; Repair Effect: Displacement reduced to 0.1mm, vibration 1.8mm/s, stable operation for 9 months; Customer Feedback: "The hang-off tieback fits perfectly, stabilizes the top drive, and prevents displacement—critical for our high-torque drilling operations."

FAQ (Frequently Asked Questions)

Conclusion & Purchase Guide

Our oilfield spare parts are designed to solve the core pain points of oilfield operations—mismatched parts, frequent failures, high maintenance costs, and unplanned downtime. With precise model adaptation, compliance with API, GB, B3452, and ISO standards, exclusive performance data, and real-world on-site cases, our parts deliver reliable, long-lasting performance that supports safe, efficient oilfield operations. We prioritize practicality and durability, ensuring each part meets the demands of harsh oilfield environments while being easy to install and maintain—we know your time is valuable, and our parts are designed to save you time and money.

We provide a complete set of procurement reference standards, including product quality inspection reports, model matching tables, technical parameters, and maintenance guides, to help you quickly select the right parts. Our engineers offer tailored technical solutions to resolve any issues you encounter, from part selection to on-site troubleshooting. Whether you need a single part (e.g., 87196-4-S flange, 30154905 hang-off tieback, FZ897.1.7 lever) or a complete set of spare parts for equipment maintenance, we deliver high-quality products and attentive service.

If you are in need of oilfield spare parts, please contact us to learn more about product details, quotations, and technical support. We will provide customized solutions based on your equipment model and actual operational needs, ensuring you receive reliable, compatible spare parts that keep your oilfield equipment running smoothly and efficiently.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619