Core Purpose & Adaptive Equipment Specification
This document is dedicated to the classified collation of replacement parts for Shenkai Multi-Ram Blowout Preventors (BOPs), specifically compatible with 2 3/8", 2 7/8", 5 1/2", 9 5/8", and 10 3/4" nominal size models of Shenkai multi-ram BOPs. It targets segmented user groups including onshore/offshore oilfield drilling contractors, oil and gas exploration & production (E&P) companies, well control equipment maintenance service providers, and drilling engineering firms.
Core Purpose: To address critical industry pain points such as unplanned downtime caused by mismatched BOP parts, compromised well control safety due to substandard components, and high maintenance costs from premature part failure. All parts are engineered in strict compliance with API Spec 16A and GB/T 22513 standards, ensuring full interchangeability with original Shenkai BOP assemblies. The guide serves dual functions as a procurement reference (with clear model matching and technical parameter benchmarks) and a technical troubleshooting tool (detailing wear mechanisms and preventive measures), empowering users to make informed procurement decisions and optimize equipment maintenance protocols.
Product Classification & Detailed Specifications
The following sections classify products by the nominal size of Shenkai multi-ram BOPs. Each category is preceded by a product description that integrates pain point reinforcement, value proposition, and scenario anchoring. All specifications are presented in tabular format, excluding inventory columns, with product serial numbers starting from 1 for each category. Key columns include material specifications, main wear causes, and usage precautions with in-depth, differentiated details to support technical decision-making.
Category 1: 9 5/8" Shenkai Multi-Ram BOP Parts
Product Description: This series is exclusively designed for Shenkai 9 5/8" multi-ram BOPs, targeting the unique pain points of large-bore well control operations—excessive structural stress on components under high well pressure, uneven seal wear due to the large contact area with 9 5/8" drill pipes/casings, and alignment challenges during ram actuation. Value Preposition: Adopting thickened high-strength alloy materials and integral forging processes, the parts deliver exceptional load-bearing capacity and fatigue resistance. The multi-layer composite seal structure ensures reliable sealing under full well pressure, extending service intervals by 35% compared to standard components. Scenario Anchoring: Suitable for onshore deep wells (well depth ≥5000m), offshore deepwater wells, and large-bore production wells utilizing 9 5/8" casing/drill pipes, compatible with high-temperature high-pressure (HTHP) formations (formation pressure ≤105MPa, temperature ≤150℃).
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01F-00 | Housing: 4140 alloy steel (quenched & tempered, wall thickness ≥60mm); Ram block: Integral-forged 4130 alloy steel (carburized layer thickness ≥2.5mm); Seal assembly: Multi-layer FKM+aramid fiber+stainless steel skeleton | 1. Fatigue cracking of housing under alternating high-pressure cycles; 2. Uneven seal wear induced by drill pipe eccentricity in deviated wells; 3. Erosion of ram surface by high-velocity drilling fluid containing solid particles | 1. Conduct ultrasonic flaw detection on the housing every 6 months in accordance with API Spec 16A; 2. Use laser alignment tools to verify ram parallelism before installation (tolerance ≤0.05mm/m); 3. Maintain drilling fluid solid content below 15% by installing high-efficiency solids control equipment | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Matching Drill Pipe/Casing OD: 244.48mm (9 5/8") | Shenkai 9 5/8" Multi-Ram BOP |
2 | DFZ1310.01F-02 | Guide rail: CuAl10Fe3 bronze (thickened); Piston rod: 40CrNiMoA (hard chrome plating, thickness ≥0.12mm); Seal ring: High-pressure resistant FKM | 1. Galling of guide rail due to insufficient lubrication under heavy load; 2. Scratching of chrome plating by contaminant particles in hydraulic oil; 3. Seal deformation under rapid pressure surges during emergency actuation | 1. Apply high-pressure molybdenum disulfide lubricant to guide rails every 150 working hours; 2. Maintain hydraulic oil cleanliness at NAS 7 level by installing 10μm high-precision filters; 3. Install pressure relief valves to limit pressure rise rate ≤5MPa/s | Max Actuation Pressure: 31.5MPa; Ram Closing Stroke: 110±3mm; Guide Rail Hardness: ≥180 HB | Shenkai 9 5/8" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 10.9-grade 35CrMo alloy steel; Surface treatment: Zinc-nickel plating (12-15μm); Nut: 10.9-grade 40Cr steel with anti-loosening serrations | 1. Thread fatigue failure under repeated high structural loads; 2. Corrosion of zinc-nickel plating in offshore saltwater environments; 3. Loosening induced by drilling vibration and thermal cycling | 1. Torque to 65±5 N·m using a calibrated hydraulic torque wrench (compliant with GB/T 3098.1); 2. Re-torque screws after the first 24 working hours of installation; 3. For offshore applications, clean screws with fresh water after exposure to salt spray and apply anti-corrosion grease | Tensile Strength: ≥1000MPa; Corrosion Resistance: Salt spray test ≥1000h; Thread Standard: M12×1.75 | Shenkai 9 5/8" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: 27SiMn alloy steel (forged); Seal assembly: PU+FKM composite; Cylinder liner: 42CrMo alloy steel (honed finish, Ra ≤0.8μm) | 1. Piston deformation due to rapid pressure spikes; 2. Cylinder liner wear from contaminant particles in hydraulic oil; 3. Seal leakage under HTHP conditions | 1. Use HTHP-compatible hydraulic oil (ISO VG 68) with a viscosity index ≥140; 2. Replace hydraulic oil filters every 500 working hours; 3. Monitor hydraulic system temperature to avoid exceeding 150℃ | Piston Diameter: 180mm; Max Hydraulic Pressure: 31.5MPa; Temperature Range: -20℃~150℃ | Shenkai 9 5/8" Multi-Ram BOP (Hydraulic Cylinder) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13NiMo stainless steel; Valve seat: Stellite 21 alloy (welded); Gasket: Spiral wound gasket (316L+Inconel 625) | 1. Erosion of valve seat by high-velocity hydraulic oil flow; 2. Corrosion of valve core in H₂S/CO₂-rich sour environments; 3. Gasket compression set under long-term pressure | 1. Control hydraulic oil flow rate within 20 L/min to minimize erosion; 2. For sour service applications (H₂S partial pressure ≥0.0003MPa), verify compliance with NACE MR0175 standard annually; 3. Replace gaskets after each pressure test (max test pressure 157.5MPa) | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Valve Port Diameter: 32mm | Shenkai 9 5/8" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01F.01-00 | Bushing: 42CrMo alloy steel (heat treated); Retaining ring: 65Mn spring steel (tempered); Seal ring: High-temperature EPDM | 1. Bushing wear from ram reciprocation under heavy load; 2. Retaining ring fatigue failure from repeated expansion/contraction; 3. EPDM seal aging under high downhole temperatures | 1. Inspect bushing inner diameter wear every 200 working hours (replace if wear exceeds 0.2mm); 2. Check retaining ring for cracks monthly using a magnifying glass; 3. For operations in temperatures exceeding 120℃, use EPDM seals rated for 150℃ | Bushing Inner Diameter: 85±0.03mm; Max Working Pressure: 105MPa; Temperature Range: -40℃~150℃ | Shenkai 9 5/8" Multi-Ram BOP (Ram Guide Assembly) |
Category 2: 2 7/8" Shenkai Multi-Ram BOP Parts
Product Description: This series is custom-developed for Shenkai 2 7/8" multi-ram BOPs, addressing core pain points of small-bore well operations—fragile small-size seals prone to installation damage, tight dimensional tolerance requirements for component matching, and premature wear from high-frequency ram actuation in horizontal well sections. Value Preposition: All parts undergo micro-precision grinding (tolerance ±0.005mm) and 100% dimensional inspection to ensure perfect fit. The reinforced seal design with aramid fiber reinforcement improves seal durability by 40% in high-cycle operations. Scenario Anchoring: Suitable for onshore shallow wells (well depth ≤2000m), horizontal well lateral sections, and small-bore exploration wells utilizing 2 7/8" drill pipes, ideal for low-to-medium pressure formations (formation pressure ≤50MPa) and coalbed methane (CBM) drilling projects.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01G-00 | Housing: 4140 alloy steel (quenched & tempered); Ram block: 4130 alloy steel (precision ground); Seal assembly: NBR+aramid fiber composite (miniature profile with reinforced edges) | 1. Seal edge tearing during improper manual installation; 2. Ram block wear from 2 7/8" drill pipe contact in horizontal sections; 3. Housing corrosion from water-based drilling fluids | 1. Use dedicated plastic installation tools for seals to avoid metal contact; 2. Inspect ram surface for wear grooves after each horizontal section run (polish with fine sandpaper if groove depth <0.1mm); 3. Clean housing interior with neutral detergent after well completion to remove fluid residues | Max Working Pressure: 50MPa; Temperature Range: -20℃~120℃; Matching Drill Pipe OD: 73.03mm (2 7/8") | Shenkai 2 7/8" Multi-Ram BOP |
2 | DFZ1310.01G-02 | Guide sleeve: CuSn8 bronze; Piston rod: 40Cr (thin-film chrome plating, 0.04-0.06mm); Seal ring: Miniature FKM | 1. Guide sleeve seizure due to insufficient lubrication in narrow clearances; 2. Chrome plating scratching from tiny contaminant particles; 3. FKM seal aging from prolonged sunlight exposure (onshore storage) | 1. Apply a thin layer (0.1-0.2mm) of high-temperature lubricant to guide sleeves; 2. Use 5μm hydraulic oil filters to remove micro-contaminants; 3. Store BOP with protective caps on seal surfaces to avoid direct sunlight | Max Actuation Pressure: 31.5MPa; Ram Closing Stroke: 60±2mm; Chrome Plating Hardness: ≥60 HRC | Shenkai 2 7/8" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 8.8-grade 20MnTiB alloy steel; Surface treatment: Zinc plating with passivation; Nut: 8.8-grade 45# steel | 1. Thread damage from over-torquing during manual installation; 2. Zinc plating corrosion in humid well site environments; 3. Loosening induced by vibration in mobile drilling rigs | 1. Torque to 45±3 N·m using a calibrated torque wrench (no impact tools allowed); 2. Inspect screws for rust every 2 months (replace if corrosion covers more than 10% of the surface area); 3. Install lock washers to enhance anti-loosening performance | Tensile Strength: ≥800MPa; Corrosion Resistance: Salt spray test ≥480h; Thread Standard: M12×1.75 | Shenkai 2 7/8" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: 27SiMn alloy steel (miniature); Seal assembly: PU composite; Cylinder liner: 42CrMo alloy steel | 1. Piston seal leakage from hydraulic oil contamination; 2. Cylinder liner wear from piston reciprocation; 3. Corrosion from water ingress in the hydraulic system | 1. Check hydraulic oil water content weekly (maintain below 0.1%); 2. Replace hydraulic oil every 1000 working hours; 3. Install water separators in the hydraulic system reservoir | Piston Diameter: 75mm; Max Hydraulic Pressure: 31.5MPa; Temperature Range: -20℃~120℃ | Shenkai 2 7/8" Multi-Ram BOP (Hydraulic Cylinder) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13 stainless steel; Valve seat: Stellite 6 alloy; Gasket: Miniature spiral wound gasket (316L+graphite) | 1. Erosion of small-diameter valve core by high-velocity oil flow; 2. Gasket damage during valve disassembly; 3. Corrosion of valve core in acidic drilling fluid environments (pH ≤6) | 1. Install flow restrictors to limit oil flow rate ≤8 L/min; 2. Disassemble valves using precision tools to avoid prying gaskets; 3. For acidic fluid applications, apply a corrosion-resistant coating to the valve core | Max Working Pressure: 50MPa; Temperature Range: -20℃~120℃; Valve Port Diameter: 15mm | Shenkai 2 7/8" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01G.01-00 | Bushing: 42CrMo alloy steel; Retaining ring: 65Mn spring steel; Seal ring: EPDM | 1. Bushing wear from ram reciprocation in small-bore design; 2. Retaining ring fatigue from high-cycle operations; 3. EPDM seal swelling in water-based drilling fluids | 1. Inspect bushing wear every 250 working hours (replace if wear exceeds 0.1mm); 2. Replace retaining rings every 500 working hours as preventive maintenance; 3. Select EPDM seals compatible with water-based fluids (swell rate ≤10%) | Bushing Inner Diameter: 40±0.03mm; Max Working Pressure: 50MPa; Temperature Range: -40℃~150℃ | Shenkai 2 7/8" Multi-Ram BOP (Ram Guide Assembly) |
Category 3: 5 1/2" Shenkai Multi-Ram BOP Parts
Product Description: Engineered for Shenkai 5 1/2" multi-ram BOPs, this series targets mid-bore well control pain points—seal degradation in medium-pressure formations, ram misalignment from drilling vibration, and corrosion of components in saline-formation drilling fluids. Value Preposition: The parts feature optimized dimensional design for 5 1/2" drill pipes/casings and corrosion-resistant surface treatments (zinc-nickel plating, passivation) that extend service life by 50% in saline environments. The self-aligning ram design compensates for minor BOP misalignment, reducing seal wear. Scenario Anchoring: Applicable to onshore medium-deep wells (well depth 2000-4500m), offshore shallow wells, and conventional oil/gas wells utilizing 5 1/2" drill pipes, suitable for medium-pressure formations (formation pressure ≤70MPa) and saline-formation environments.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01H-00 | Housing: 4140 alloy steel (quenched & tempered); Ram block: 4130 alloy steel (carburized); Seal assembly: FKM composite with corrosion inhibitor; Connecting pins: 316L stainless steel | 1. Seal degradation from saline-formation drilling fluids; 2. Ram block wear from 5 1/2" drill pipe contact; 3. Pin corrosion from downhole H₂S/CO₂ | 1. Add corrosion inhibitor to the drilling fluid to maintain pH 8-10; 2. Inspect the ram block surface every 300 working hours (grind if wear exceeds 0.2mm); 3. For sour service applications, verify pin compliance with NACE MR0175 standard | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Matching Drill Pipe OD: 139.7mm (5 1/2") | Shenkai 5 1/2" Multi-Ram BOP |
2 | DFZ1310.01H-02 | Guide rail: CuAl10Fe3 bronze; Piston rod: 40Cr (hard chrome plating); Seal ring: High-pressure FKM | 1. Guide rail wear from ram misalignment; 2. Chrome plating erosion from hydraulic oil contaminants; 3. Seal leakage from pressure surges | 1. Use laser alignment to set ram parallelism (tolerance ≤0.08mm/m); 2. Replace hydraulic oil filters every 600 working hours; 3. Install accumulators to dampen pressure surges (max surge ≤10% of working pressure) | Max Actuation Pressure: 31.5MPa; Ram Closing Stroke: 90±2mm; Guide Rail Hardness: ≥180 HB | Shenkai 5 1/2" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 8.8-grade 20MnTiB alloy steel; Surface treatment: Zinc-nickel plating; Nut: 8.8-grade 45# steel | 1. Thread wear from repeated assembly/disassembly; 2. Corrosion of zinc-nickel plating in offshore environments; 3. Loosening induced by drilling vibration | 1. Torque to 50±5 N·m in accordance with GB/T 3098.1; 2. For offshore use, clean screws with fresh water after exposure to salt spray; 3. Apply medium-strength thread lock compound for vibration-prone applications | Tensile Strength: ≥800MPa; Corrosion Resistance: Salt spray test ≥1000h; Thread Standard: M12×1.75 | Shenkai 5 1/2" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: 27SiMn alloy steel; Seal assembly: PU+FKM composite; Cylinder liner: 42CrMo alloy steel | 1. Piston wear from hydraulic oil contaminants; 2. Cylinder liner scoring from misaligned piston; 3. Seal degradation under high temperature | 1. Maintain hydraulic oil cleanliness at NAS 8 level; 2. Check piston-cylinder coaxiality annually (tolerance ≤0.1mm); 3. Monitor downhole temperature to avoid operation above 120℃ | Piston Diameter: 130mm; Max Hydraulic Pressure: 31.5MPa; Cylinder Liner Roughness: Ra ≤0.8μm | Shenkai 5 1/2" Multi-Ram BOP (Hydraulic Cylinder) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13 stainless steel; Valve seat: Stellite 6; Gasket: Spiral wound gasket (316L+graphite) | 1. Valve seat erosion from high-velocity oil flow; 2. Gasket wear from repeated valve operation; 3. Corrosion of valve core in saline fluids | 1. Limit hydraulic oil flow rate within 15 L/min; 2. Replace gaskets every 6 months or 50 valve cycles (whichever comes first); 3. Clean the valve interior with corrosion inhibitor after well completion | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Valve Port Diameter: 25mm | Shenkai 5 1/2" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01H.01-00 | Bushing: 42CrMo alloy steel; Retaining ring: 65Mn spring steel; Seal ring: EPDM | 1. Bushing wear from ram reciprocation; 2. Retaining ring fatigue from repeated loading; 3. EPDM seal aging from sunlight (onshore BOPs) | 1. Inspect bushing wear every 300 working hours (replace if wear exceeds 0.15mm); 2. Check retaining ring for cracks monthly; 3. Cover the BOP with a protective tarp when not in use to avoid sunlight exposure | Bushing Inner Diameter: 60±0.03mm; Max Working Pressure: 70MPa; Temperature Range: -40℃~150℃ | Shenkai 5 1/2" Multi-Ram BOP (Ram Guide Assembly) |
Category 4: 2 3/8" Shenkai Multi-Ram BOP Parts
Product Description: Exclusively designed for Shenkai 2 3/8" multi-ram BOPs, this series addresses ultra-small-bore well pain points—extremely fragile seals, strict dimensional matching for ultra-small components, and difficulty in maintaining lubrication in narrow clearances. Value Preposition: All parts are manufactured with micro-precision machining (tolerance ±0.005mm) to ensure compatibility. The ultra-small seals feature a reinforced edge design to prevent installation tearing, and pre-lubricated components with solid lubricant coating eliminate the need for frequent re-lubrication. Scenario Anchoring: Suitable for onshore ultra-shallow wells (well depth ≤1000m), small-bore geothermal wells, and micro-exploration wells utilizing 2 3/8" drill pipes, ideal for low-pressure formations (formation pressure ≤35MPa) and non-oil/gas drilling applications (e.g., water well drilling).
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01L-00 | Housing: 4140 alloy steel (lightweight design); Ram block: 4130 alloy steel (micro-precision ground); Seal assembly: NBR+aramid fiber (reinforced edge) | 1. Seal edge tearing during installation; 2. Ram block wear from 2 3/8" drill pipe contact; 3. Housing corrosion from surface water ingress | 1. Use dedicated fixturing tools for seal installation (no manual stretching); 2. Inspect the ram surface for wear after each well (polish if depth <0.08mm); 3. Seal BOP housing openings when not in use to prevent water ingress | Max Working Pressure: 35MPa; Temperature Range: -20℃~100℃; Matching Drill Pipe OD: 60.33mm (2 3/8") | Shenkai 2 3/8" Multi-Ram BOP |
2 | DFZ1310.01L-02 | Guide sleeve: CuSn6 bronze; Piston rod: 40Cr (thin-film chrome plating); Seal ring: Ultra-small FKM | 1. Guide sleeve seizure from insufficient lubrication in narrow clearances; 2. Chrome plating scratching from tiny contaminants; 3. FKM seal degradation in high-humidity environments | 1. Use pre-lubricated components with solid lubricant coating (no additional lubrication needed); 2. Use 3μm hydraulic oil filters to remove micro-contaminants; 3. Store spare parts in desiccated containers (humidity ≤40%) | Max Actuation Pressure: 31.5MPa; Ram Closing Stroke: 55±2mm; Chrome Plating Thickness: 0.03-0.05mm | Shenkai 2 3/8" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 8.8-grade 20MnTiB alloy steel; Surface treatment: Zinc plating; Nut: 8.8-grade 45# steel (miniature profile) | 1. Thread damage from over-torquing (small thread cross-section); 2. Zinc plating corrosion in humid remote well sites; 3. Loosening induced by light drilling vibration | 1. Torque to 40±3 N·m using a micro-torque wrench; 2. Apply anti-rust oil to screws before storage; 3. Use nylon lock nuts for vibration resistance | Tensile Strength: ≥800MPa; Corrosion Resistance: Salt spray test ≥480h; Thread Standard: M12×1.75 | Shenkai 2 3/8" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: 27SiMn alloy steel (ultra-small); Seal assembly: PU composite; Cylinder liner: 42CrMo alloy steel | 1. Piston seal leakage from hydraulic oil contamination; 2. Cylinder liner wear from micro-contaminants; 3. Corrosion from water ingress in the hydraulic system | 1. Check hydraulic oil for contamination monthly (replace if NAS grade >8); 2. Inspect the cylinder liner for micro-scratches annually; 3. Install water separators in the hydraulic system reservoir | Piston Diameter: 65mm; Max Hydraulic Pressure: 31.5MPa; Temperature Range: -20℃~100℃ | Shenkai 2 3/8" Multi-Ram BOP (Hydraulic Cylinder) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13 stainless steel (ultra-small); Valve seat: Stellite 6; Gasket: Micro spiral wound gasket | 1. Valve core erosion from high-velocity oil flow; 2. Gasket damage during disassembly; 3. Corrosion of valve core in humid environments | 1. Install flow restrictors to limit flow rate ≤6 L/min; 2. Disassemble valves only when necessary (minimize gasket disturbance); 3. Apply anti-corrosion grease to valve components after disassembly | Max Working Pressure: 35MPa; Temperature Range: -20℃~100℃; Valve Port Diameter: 12mm | Shenkai 2 3/8" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01L.01-00 | Bushing: 42CrMo alloy steel (ultra-small); Retaining ring: 65Mn spring steel (thin); Seal ring: EPDM | 1. Bushing wear from ram reciprocation in narrow clearances; 2. Retaining ring breakage from improper installation; 3. EPDM seal swelling in water | 1. Inspect bushing wear every 200 working hours (replace if wear exceeds 0.08mm); 2. Use precision pliers for retaining ring installation (avoid over-spreading); 3. Select water-resistant EPDM seals (swell rate ≤8%) | Bushing Inner Diameter: 35±0.03mm; Max Working Pressure: 35MPa; Temperature Range: -40℃~150℃ | Shenkai 2 3/8" Multi-Ram BOP (Ram Guide Assembly) |
Category 5: 10 3/4" Shenkai Multi-Ram BOP Parts
Product Description: Tailored for Shenkai 10 3/4" multi-ram BOPs, this series addresses extra-large-bore well control pain points—extreme structural stress on components under high pressure, massive seal surface area prone to uneven wear, and difficulty in handling/installation of large components. Value Preposition: Adopting integral forging and heavy-duty structural design, the parts deliver exceptional impact resistance for emergency shut-in operations. The multi-zone seal design ensures uniform pressure distribution across the large seal surface. All parts comply with API Spec 16A deepwater requirements and DNV GL certification standards. Scenario Anchoring: Applicable to onshore ultra-deep wells (well depth ≥6000m), offshore deepwater drilling platforms, and large-bore production wells utilizing 10 3/4" casing, suitable for HTHP formations (formation pressure ≤140MPa, temperature ≤180℃) and deepwater oil/gas exploration.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01M-00 | Housing: Integral-forged 4140 alloy steel (quenched & tempered); Ram block: Integral-forged 4130 alloy steel; Seal assembly: Multi-zone FKM+Inconel 625 skeleton | 1. Housing fatigue cracking under ultra-high pressure; 2. Uneven seal wear across large surface area; 3. Ram block erosion from high-velocity drilling fluid/solids | 1. Conduct pressure testing every 3 months in accordance with API Spec 16A (max test pressure 210MPa); 2. Use laser profiling to inspect seal surface wear (replace if wear exceeds 0.3mm); 3. Install high-efficiency solids control equipment to maintain solid content below 10% | Max Working Pressure: 140MPa; Temperature Range: -20℃~180℃; Matching Casing OD: 273.05mm (10 3/4") | Shenkai 10 3/4" Multi-Ram BOP |
2 | DFZ1310.01M-02 | Guide rail: CuAl10Fe3 bronze (heavy-duty); Piston rod: 40CrNiMoA (hard chrome plating); Seal ring: High-temperature/high-pressure FKM | 1. Guide rail deformation under heavy ram load; 2. Chrome plating wear from hydraulic oil contaminants; 3. Seal degradation under HTHP conditions | 1. Inspect guide rail straightness every 150 working hours (tolerance ≤0.05mm/m); 2. Maintain hydraulic oil cleanliness at NAS 6 level by installing 5μm filters; 3. Use HTHP hydraulic oil (ISO VG 68, rated to 180℃) | Max Actuation Pressure: 31.5MPa; Ram Closing Stroke: 125±3mm; Guide Rail Hardness: ≥200 HB | Shenkai 10 3/4" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 12.9-grade 42CrMo alloy steel; Surface treatment: Zinc-nickel plating + passivation; Nut: 12.9-grade 40CrNiMoA steel | 1. Thread failure under extreme structural loads; 2. Corrosion of zinc-nickel plating in offshore deepwater environments; 3. Loosening induced by platform vibration | 1. Torque to 80±5 N·m using a hydraulic torque wrench; 2. Inspect plating monthly for damage (touch up with anti-corrosion compound); 3. Use double nuts for critical fastening positions | Tensile Strength: ≥1200MPa; Corrosion Resistance: Salt spray test ≥2000h; Thread Standard: M12×1.75 | Shenkai 10 3/4" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: Integral-forged 27SiMn alloy steel; Seal assembly: High-pressure PU+FKM composite; Cylinder liner: 42CrMo alloy steel (honed, Ra ≤0.4μm) | 1. Piston deformation from ultra-high hydraulic pressure; 2. Cylinder liner wear from contaminant particles; 3. Seal leakage under HTHP cycling | 1. Monitor hydraulic system pressure (max 31.5MPa) to avoid overloading; 2. Replace hydraulic oil and filters every 400 working hours; 3. Conduct seal integrity testing after each HTHP cycle | Piston Diameter: 200mm; Max Hydraulic Pressure: 31.5MPa; Cylinder Liner Roughness: Ra ≤0.4μm | Shenkai 10 3/4" Multi-Ram BOP (Hydraulic Cylinder) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13NiMo stainless steel; Valve seat: Stellite 31 alloy; Gasket: High-pressure spiral wound gasket (Inconel 625+graphite) | 1. Severe valve seat erosion from high-velocity, high-pressure oil flow; 2. Gasket compression set under long-term pressure; 3. Corrosion of valve core in sour deepwater environments | 1. Install flow control valves to limit flow rate ≤25 L/min; 2. Replace gaskets after each pressure test; 3. Verify NACE MR0175 compliance for all valve components annually | Max Working Pressure: 140MPa; Temperature Range: -20℃~180℃; Valve Port Diameter: 38mm | Shenkai 10 3/4" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01M.01-00 | Bushing: 42CrMo alloy steel (heavy-duty); Retaining ring: 65Mn spring steel (thickened); Seal ring: High-temperature EPDM | 1. Bushing wear from heavy ram reciprocation; 2. Retaining ring fatigue failure from repeated loading; 3. EPDM seal aging under high downhole temperatures | 1. Inspect bushing wear every 150 working hours (replace if wear exceeds 0.25mm); 2. Replace retaining rings every 300 working hours as preventive maintenance; 3. Use high-temperature EPDM rated to 180℃ | Bushing Inner Diameter: 95±0.03mm; Max Working Pressure: 140MPa; Temperature Range: -40℃~180℃ | Shenkai 10 3/4" Multi-Ram BOP (Ram Guide Assembly) |
Procurement Guidance
All Shenkai multi-ram BOP parts listed in this document are manufactured in strict accordance with API Spec 16A and GB/T 22513 standards, with complete quality inspection certificates and traceability codes to ensure product authenticity and performance reliability. When purchasing, we recommend confirming the exact BOP model and nominal size to ensure perfect matching. For special working conditions (such as HTHP, sour service, offshore deepwater environments), please contact our technical team to provide customized material and process solutions.
To ensure the safety and reliability of well control operations, we strongly advise using genuine matching parts. Our products undergo rigorous testing, including pressure testing, corrosion resistance testing, and fatigue testing, to meet the high requirements of oil and gas drilling well control. If you have any needs for product selection, technical consultation, or procurement, please contact our professional team. We will provide you with professional solutions and high-quality products to safeguard your well control operations.
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