SL135/SL160 Full Series BOP & Drilling Fluid System Spare Parts

Core Purpose & Target User Orientation

This comprehensive range of SL135 and SL160 series spare parts is precision engineered for SL135-32-00 BOP assemblies, SL16049 main bodies, and associated drilling fluid circulation systems, covering all critical wear components, sealing parts, structural assemblies, and connecting fasteners required for daily maintenance and emergency repairs. It caters to the specialized needs of senior drilling supervisors, BOP maintenance technicians, rig mechanical superintendents, global procurement managers, and offshore platform operations departments who demand zero non-productive time (NPT), reliable pressure retention, compliance with international safety standards, and full interoperability with original equipment. The core mission is to resolve critical on-site pain points such as catastrophic mud loss, premature seal failure, bearing seizing, BOP packing extrusion, and unsafe connection conditions, providing a complete lifecycle solution for land deep-well drilling, offshore platform operations, and workover projects.

Product Introduction

As a specialized manufacturer and global supplier of high-integrity drilling fluid system components, we offer a full spectrum of SL135/SL160 series parts, including BOP assemblies, mud umbrellas, center pipes, goose neck pipes, bearing covers, oil seals, packing sets, casing components, and precision fasteners. Every component is manufactured to strict tolerances, adhering to API 6A (Drilling and Production Equipment), API 16A (BOP Systems), and GB mechanical standards, ensuring dimensional accuracy and material performance that meets or exceeds OEM specifications.

Backed by over 20 years of specialization in well control equipment and fluid systems, our products undergo a rigorous three-stage quality validation process: high-pressure sealing testing, load-bearing fatigue analysis, and environmental corrosion simulation. Exclusive internal test data confirms that our SL135-K lower packing assembly and SL135-M upper packing pre maintain a continuous service life of 1900 drilling hours under rated working pressure, while our premium oil seals (SL135-21, HGS69247) resist thermal degradation and abrasive intrusion for 1650 consecutive hours. Each batch is accompanied by official material test reports (MTRs) and API compliance certificates, establishing us as a trusted source for mission-critical drilling components worldwide.

Functional Description

1. Well Control & Pressure Isolation: The core SL135-32-00 BOP assembly and packing systems (SL135-06, SL135-K) provide a positive, leak-proof barrier to control wellbore pressure, preventing kick and blowout hazards during drilling, tripping, and well control operations.

2. Mud Circulation & Direction Control: Components like the SL160-02 goose neck pipe, SL160-08 center pipe, and SLK045 washing pipe form the critical fluid path, directing high-velocity drilling mud efficiently and minimizing pressure drop across the system.

3. Sealing & Contamination Prevention: A full suite of oil seals (SL135-21, HG4-692-67, HGS69247), gaskets, and packing elements isolates lubrication paths and blocks external grit, ensuring smooth operation of rotating and reciprocating parts without abrasive wear.

4. Load Bearing & Positioning: Casings (SL135-25, SL135-21), bearing covers (SL135-28 upper/lower), and support brackets (SL160-04) provide rigid structural support, maintaining critical clearances and tolerances under heavy dynamic loads.

5. Positive Connection & Locking: High-strength bolts (SLUM6, SL160-03), bails (SL160-01), bail pins (SL160-10), and locking devices ensure secure assembly of components, preventing loosening or separation during high-stress operations.

Structural Features

The product line employs a robust, field-proven structural design optimized for harsh wellbore environments. The SL135-32-00 BOP assembly features a multi-layer packing gland structure, with upper and lower packing cases (SL135-12, SL135-11) and packing pre (SL135-M) working in tandem to distribute pressure evenly and prevent extrusion. The SL16049 body and center pipe (SL160-08) are precision machined from high-tensile alloy steel, resistant to erosion and corrosion. All wearing parts, such as the mud umbrella (SL135-29) and washing pipe (SLK045), are engineered with wear-resistant coatings or materials. Standard fasteners comply with international quality standards, while components like the oil pointer (SL135-30-00) enable visual monitoring of lubrication status.

Applicable Working Conditions

These parts are specifically configured to operate in the extreme conditions encountered in:

• Onshore Deep Drilling: High-temperature formations and high-pressure wells in major oil-producing basins.

• Offshore Platform Operations: Corrosive marine environments with high humidity and salt spray.

• High-Abrasive Drilling: Formations with high sand content and dense drilling mud.

• Workover & Intervention: Frequent make-and-break operations requiring reliable connections and seals.

Suitable for ambient temperatures ranging from -30°C to 140°C and working pressures up to 10,500 PSI, the product line is fully compatible with SL135 and SL160 series drilling equipment, supporting both new installations and retrofit maintenance.

Maintenance & On-Site Operation Suggestions

1. Routine Inspection Regimen: Conduct a thorough check of all sealing surfaces (oil seals, gaskets) every 200 drilling hours. Inspect the packing set for extrusion or compression set, and verify the torque on all high-stress bolts (SL160-03, SLUM6).

2. Lubrication Best Practice: Use the oil pointer (SL135-30-00) to monitor lubricant level regularly. Lubricate bearings and moving parts through designated grease fittings, ensuring the use of NLGI 2 grade grease compatible with downhole temperatures to prevent grease breakdown.

3. Installation Torque & Procedure: When installing BOP components, follow a sequential crisscross torque pattern to ensure uniform gland loading. Never overtighten, as this can cause packing extrusion or casing distortion; equally, under-tightening must be avoided to prevent leakage.

4. Critical Replacement Criteria: Do not reuse oil seals or gaskets that have been removed, even if they appear intact. Replace worn bearings (if noise or vibration is detected) and damaged pins/bails as a precaution to avoid catastrophic failure during a well control event.

We supply the following spare parts:

On-Site Fault Repair Cases

Case 1: Gulf of Mexico (Deepwater Offshore Platform)

• Equipment Model: SL135-32-00 BOP Assembly

• Operating Load: 8,500 PSI circulating pressure, deepwater drilling

• Fault Condition: Intermittent mud leakage observed at the lower bearing cover (SL135-28) during high-pressure operations. Investigation revealed degradation of the SL135-21 oil seal due to thermal aging and saltwater intrusion.

• Replacement Parts: SL135-28 lower bearing cover, SL135-21 oil seal, SL135-19 protect connector.

• Post-Repair Indicators: Zero leakage observed under 9,000 PSI test pressure. The BOP assembly passed a 48-hour steady-state test with no pressure decay.

• Customer Feedback: "The repair was completed in half the usual time. The new oil seal has a much better material specification that resists our harsh offshore environment. We've eliminated a chronic leakage issue that was causing maintenance delays."

Case 2: Permian Basin, USA (Land Drilling Rig)

• Equipment Model: SL16049 Body & SL160-02 Goose Neck Pipe

• Operating Load: 6,200 PSI circulating pressure, 350-ton drilling load

• Fault Condition: Severe pressure drop and mud splashback at the goose neck pipe connection, indicating a failed gasket and potential body misalignment.

• Replacement Parts: SL16002 goose neck pipe, SL160-03 bolts (1122×58), GB93-76 spring washers (12).

• Post-Repair Indicators: Circulation pressure stabilized at the rated 6,200 PSI. No leakage or vibration was detected during a 12-hour continuous run.

• Customer Feedback: "The bolts and washers fit perfectly. The pressure drop issue is completely resolved. It's reassuring to have a reliable source for these critical connection parts when we're in a tight drilling window."

Case 3: Siberian Oilfield, Russia (Arctic Onshore Rig)

• Equipment Model: SL135-29 Mud Umbrella & SLK045 Washing Pipe

• Operating Load: Extreme cold (-40°C ambient), high-sand content drilling fluid

• Fault Condition: The mud umbrella (SL135-29) had cracked due to thermal shock and abrasive wear, causing excessive mud spray and contaminating the bearing area.

• Replacement Parts: SL135-29 mud umbrella, SL135-25 casing, SL135.300-00 adjusting washer.

• Post-Repair Indicators: Mud deflection is 100% effective, protecting the bearing assembly. The system operated flawlessly for 1800 drilling hours in severe winter conditions.

• Customer Feedback: "The replacement mud umbrella is much more durable than our previous alternatives. It stands up to our extreme cold and dusty conditions much better. This has reduced our winter maintenance workload significantly."

Frequently Asked Questions

Procurement Guidance

For drilling operations committed to safety, reliability, and maximum uptime, our SL135/SL160 full series spare parts represent the definitive solution for well control and fluid system maintenance. We provide a single-source procurement option for all your BOP and drilling fluid needs, from individual fasteners to complete overhaul kits.

Each order includes comprehensive material test reports (MTRs) and API compliance certificates, ensuring you meet the strictest industry and safety regulations. Whether you require bulk inventory for a long-term project or emergency replacement parts for a critical wellsite, our dedicated team of application engineers is available to provide free technical support, model verification, and installation guidance.

We understand the urgency of downhole problems and prioritize order fulfillment to get your critical parts to the rig site as quickly as possible. Choose our products to equip your SL135/SL160 drilling system with the durability and precision it needs to tackle any drilling challenge, and experience the peace of mind that comes with using genuine, high-quality replacement components.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619