Core Purpose & Adaptive Equipment Overview
This document is dedicated to the classified specification and technical guidance of replacement parts for Shenkai Multi-Ram Blowout Preventors (BOPs) with nominal sizes of 5 7/8", 8 5/8", 9 7/8", and 7 7/8". All parts are 100% compatible with Shenkai corresponding model multi-ram BOPs, including but not limited to Shenkai 5 7/8" Multi-Ram BOP, Shenkai 8 5/8" Multi-Ram BOP, Shenkai 9 7/8" Multi-Ram BOP, and Shenkai 7 7/8" Multi-Ram BOP.
Target User Segments & Core Needs: This guide is tailored for onshore/offshore oil and gas drilling contractors, deep well exploration enterprises, well control equipment maintenance service providers, and energy development companies engaged in medium-deep to ultra-deep well operations. It addresses critical user pain points such as mismatched parts causing BOP operational failures, premature component wear in complex well conditions (e.g., high-temperature high-pressure/HTHP, sour service, deviated wells), and lack of professional technical support for maintenance and part selection. Core Purpose: Serving as a dual-reference tool for procurement and technical troubleshooting, it provides clear part number matching, material standards, key technical parameters, wear mechanism analysis, and preventive maintenance protocols. All content adheres to API Spec 16A, GB/T 22513, and NACE MR0175 (for sour service) standards, ensuring product reliability and operational safety of well control systems.
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 to reflect the unique applicability of each size in specific drilling scenarios. All specifications are presented in tabular format (excluding inventory columns), with product serial numbers starting from 1 for each category. Key columns include material specification, main wear causes, and usage precautions with in-depth, differentiated technical details to support on-site operation and procurement decision-making.
Category 1: 5 7/8" Shenkai Multi-Ram BOP Parts
Product Description: Exclusively engineered for Shenkai 5 7/8" multi-ram BOPs, this series targets core pain points of mid-bore well control operations—seal incompatibility with 5 7/8" drill pipes leading to leakage, premature wear of actuation system components due to continuous vibration in deviated wells, and corrosion of fastening parts in saline-formation drilling fluids. Value Preposition: The profiled seal design achieves 100% fit with 5 7/8" drill pipe outer diameter, reducing leakage risk by 50%. Key components adopt zinc-nickel plating (12-15μm) and corrosion-resistant alloy materials, extending service life by 60% in saline environments. All parts undergo precision grinding (tolerance ±0.008mm) to ensure assembly accuracy. Scenario Anchoring: Suitable for onshore medium-deep wells (well depth 2500-5000m), offshore shallow wells, and conventional oil/gas wells utilizing 5 7/8" drill pipes, compatible with medium-pressure formations (formation pressure ≤70MPa) and deviated wells (deviation angle ≤40°).
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01S-00 | Housing: 4140 alloy steel (quenched & tempered); Ram block: 4130 alloy steel (carburized layer thickness ≥2.0mm); Seal assembly: FKM composite with corrosion inhibitor (profiled for 5 7/8" drill pipe) | 1. Seal degradation from saline-formation drilling fluids; 2. Ram block wear from 5 7/8" drill pipe contact in deviated sections; 3. Housing fatigue cracking under cyclic pressure loading | 1. Add corrosion inhibitor to drilling fluid to maintain pH 8.5-10; 2. Inspect ram block surface for wear grooves every 250 working hours (grind if groove depth >0.15mm); 3. Conduct ultrasonic flaw detection on housing every 6 months per API Spec 16A | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Matching Drill Pipe OD: 149.23mm (5 7/8") | Shenkai 5 7/8" Multi-Ram BOP |
2 | DFZ1310.01S-02 | Guide rail: CuAl10Fe3 bronze (thickened); Piston rod: 40CrNiMoA (hard chrome plating, thickness ≥0.12mm); Seal ring: High-pressure FKM | 1. Guide rail galling due to insufficient lubrication under vibration; 2. Chrome plating scratching by contaminant particles in hydraulic oil; 3. Seal deformation from rapid pressure surges during emergency actuation | 1. Apply high-pressure molybdenum disulfide lubricant to guide rails every 120 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: 90±2mm; Guide Rail Hardness: ≥180 HB | Shenkai 5 7/8" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 10.9-grade 35CrMo alloy steel; Surface treatment: Zinc-nickel plating + passivation; 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 5 7/8" 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 120℃ | Piston Diameter: 130mm; Max Hydraulic Pressure: 31.5MPa; Temperature Range: -20℃~120℃ | Shenkai 5 7/8" 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 15 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 105MPa) | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Valve Port Diameter: 25mm | Shenkai 5 7/8" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01S.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 100℃, use EPDM seals rated for 150℃ | Bushing Inner Diameter: 65±0.03mm; Max Working Pressure: 70MPa; Temperature Range: -40℃~150℃ | Shenkai 5 7/8" Multi-Ram BOP (Ram Guide Assembly) |
Category 2: 8 5/8" Shenkai Multi-Ram BOP Parts
Product Description: Tailored for Shenkai 8 5/8" multi-ram BOPs, this series addresses 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-size parts. Value Preposition: Adopting integral forging and heavy-duty structural design, the housing and ram block deliver exceptional impact resistance for emergency shut-in operations. The multi-zone seal design ensures uniform pressure distribution across the 8 5/8" seal surface, improving sealing reliability by 45%. All parts comply with API Spec 16A deepwater requirements and feature anti-slip design for safe installation. Scenario Anchoring: Applicable to onshore deep wells (well depth 4000-6500m), offshore shallow-deep wells, and large-bore production wells utilizing 8 5/8" casing/drill pipes, suitable for high-pressure formations (formation pressure ≤105MPa) and offshore saltwater environments.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01T-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 157.5MPa); 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: 105MPa; Temperature Range: -20℃~150℃; Matching Casing/Drill Pipe OD: 219.08mm (8 5/8") | Shenkai 8 5/8" Multi-Ram BOP |
2 | DFZ1310.01T-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 150℃) | Max Actuation Pressure: 31.5MPa; Ram Closing Stroke: 115±3mm; Guide Rail Hardness: ≥200 HB | Shenkai 8 5/8" 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 8 5/8" 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: 180mm; Max Hydraulic Pressure: 31.5MPa; Cylinder Liner Roughness: Ra ≤0.4μm | Shenkai 8 5/8" 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 ≤22 L/min; 2. Replace gaskets after each pressure test; 3. Verify NACE MR0175 compliance for all valve components annually | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Valve Port Diameter: 32mm | Shenkai 8 5/8" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01T.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: 85±0.03mm; Max Working Pressure: 105MPa; Temperature Range: -40℃~180℃ | Shenkai 8 5/8" Multi-Ram BOP (Ram Guide Assembly) |
Category 3: 9 7/8" Shenkai Multi-Ram BOP Parts
Product Description: Engineered for Shenkai 9 7/8" multi-ram BOPs, this series addresses extra-large-bore well control pain points—extreme pressure-bearing requirements of components, uneven seal wear due to large contact area, and corrosion of parts in HTHP sour environments. Value Preposition: The heavy-duty housing (wall thickness ≥60mm) and ram block are made of high-strength alloy steel with quenched-tempered treatment, ensuring excellent pressure-bearing capacity and impact resistance. The seal assembly adopts a multi-layer composite structure with Inconel 625 skeleton reinforcement, improving seal durability by 55% in HTHP conditions. All parts are certified by DNV GL and comply with API Spec 16A deepwater standards. Scenario Anchoring: Applicable to onshore ultra-deep wells (well depth ≥6000m), offshore deepwater drilling platforms, and large-bore production wells utilizing 9 7/8" casing, suitable for HTHP formations (formation pressure ≤140MPa, temperature ≤180℃) and deepwater sour service environments.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01U-00 | Housing: Integral-forged 4140 alloy steel (quenched & tempered, wall thickness ≥60mm); Ram block: Integral-forged 4130 alloy steel; Seal assembly: Multi-layer FKM+Inconel 625 skeleton composite | 1. Housing fatigue cracking under ultra-high pressure cycles; 2. Uneven seal wear across extra-large surface area; 3. Ram block erosion from high-velocity drilling fluid solids | 1. Conduct ultrasonic flaw detection and pressure testing every 2 months in accordance with API Spec 16A; 2. Use laser profiling to inspect seal surface wear (replace if wear exceeds 0.35mm); 3. Install high-efficiency solids control equipment to maintain solid content below 8% | Max Working Pressure: 140MPa; Temperature Range: -20℃~180℃; Matching Casing OD: 250.83mm (9 7/8") | Shenkai 9 7/8" Multi-Ram BOP |
2 | DFZ1310.01U-02 | Guide rail: CuAl10Fe3 bronze (extra-heavy-duty); Piston rod: 40CrNiMoA (hard chrome plating, thickness ≥0.15mm); Seal ring: HTHP-resistant FKM | 1. Guide rail deformation under extreme ram load; 2. Chrome plating wear from hydraulic oil contaminants; 3. Seal degradation under HTHP cycling | 1. Inspect guide rail straightness every 100 working hours (tolerance ≤0.03mm/m); 2. Maintain hydraulic oil cleanliness at NAS 5 level by installing 3μm precision filters; 3. Use HTHP hydraulic oil (ISO VG 68, rated to 180℃) with anti-oxidation additives | Max Actuation Pressure: 31.5MPa; Ram Closing Stroke: 125±3mm; Guide Rail Hardness: ≥220 HB | Shenkai 9 7/8" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 12.9-grade 42CrMo alloy steel; Surface treatment: Zinc-nickel plating + passivation + anti-corrosion coating; Nut: 12.9-grade 40CrNiMoA steel | 1. Thread failure under extreme structural loads; 2. Corrosion of zinc-nickel plating in offshore deepwater sour environments; 3. Loosening induced by platform vibration and thermal shock | 1. Torque to 90±5 N·m using a calibrated hydraulic torque wrench; 2. Inspect screws and plating weekly for offshore deepwater applications; 3. Use double nuts and high-strength thread lock compound for critical positions | Tensile Strength: ≥1200MPa; Corrosion Resistance: Salt spray test ≥2500h; Thread Standard: M12×1.75 | Shenkai 9 7/8" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: Integral-forged 27SiMn alloy steel; Seal assembly: HTHP-resistant 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 in real-time (max 31.5MPa); 2. Replace hydraulic oil and filters every 300 working hours; 3. Conduct seal integrity testing after each HTHP cycle and replace seals if necessary | Piston Diameter: 200mm; Max Hydraulic Pressure: 31.5MPa; Cylinder Liner Roughness: Ra ≤0.4μm | Shenkai 9 7/8" Multi-Ram BOP (Hydraulic Cylinder) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13NiMo stainless steel; Valve seat: Stellite 31 alloy (welded); Gasket: HTHP 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 HTHP conditions; 3. Corrosion of valve core in sour environments | 1. Install flow control valves to limit flow rate ≤25 L/min; 2. Replace gaskets after each pressure test and every 6 months (whichever comes first); 3. Verify NACE MR0175 compliance for all valve components annually | Max Working Pressure: 140MPa; Temperature Range: -20℃~180℃; Valve Port Diameter: 38mm | Shenkai 9 7/8" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01U.01-00 | Bushing: 42CrMo alloy steel (extra-heavy-duty); Retaining ring: 65Mn spring steel (extra-thickened); Seal ring: HTHP 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 100 working hours (replace if wear exceeds 0.3mm); 2. Replace retaining rings every 200 working hours as preventive maintenance; 3. Use HTHP EPDM rated to 200℃ | Bushing Inner Diameter: 95±0.03mm; Max Working Pressure: 140MPa; Temperature Range: -40℃~200℃ | Shenkai 9 7/8" Multi-Ram BOP (Ram Guide Assembly) |
Category 4: 7 7/8" Shenkai Multi-Ram BOP Parts
Product Description: Custom-developed for Shenkai 7 7/8" multi-ram BOPs, this series addresses mid-large bore well control pain points—seal degradation in medium-high pressure formations, ram misalignment from drilling vibration, and corrosion of components in acidic drilling fluid environments (pH ≤6). Value Preposition: The acid-resistant material selection (316L stainless steel for key components) and corrosion inhibitor-added seals enhance compatibility with acidic fluids. The self-aligning ram guide design compensates for minor misalignment (tolerance ≤0.1mm/m), reducing seal wear by 40%. All parts are interchangeable with original Shenkai 7 7/8" BOP components, simplifying maintenance and reducing downtime. Scenario Anchoring: Applicable to onshore medium-deep wells (well depth 3000-5500m), acidic formation oil/gas wells, and conventional production wells utilizing 7 7/8" drill pipes/casings, suitable for medium-high pressure formations (formation pressure ≤85MPa) and acidic drilling fluid environments.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01V-00 | Housing: 4140 alloy steel (quenched & tempered); Ram block: 4130 alloy steel (carburized); Seal assembly: Acid-resistant FKM composite with corrosion inhibitor; Connecting pins: 316L stainless steel | 1. Seal degradation from acidic drilling fluids; 2. Ram block wear from 7 7/8" drill pipe contact; 3. Pin corrosion from acidic formation water | 1. Monitor drilling fluid pH value (maintain ≥6 by adding neutralizer); 2. Inspect ram block surface every 300 working hours (grind if wear exceeds 0.2mm); 3. Clean connecting pins with acid-resistant detergent after well completion | Max Working Pressure: 85MPa; Temperature Range: -20℃~130℃; Matching Drill Pipe/Casing OD: 198.45mm (7 7/8") | Shenkai 7 7/8" Multi-Ram BOP |
2 | DFZ1310.01V-02 | Guide rail: CuAl10Fe3 bronze; Piston rod: 40Cr (hard chrome plating); Seal ring: Acid-resistant 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: 105±2mm; Guide Rail Hardness: ≥180 HB | Shenkai 7 7/8" Multi-Ram BOP (Actuation System) |
3 | GB70 M12×65 | Screw: 10.9-grade 35CrMo alloy steel; Surface treatment: Zinc-nickel plating + acid-resistant passivation; Nut: 10.9-grade 40Cr steel | 1. Thread wear from repeated assembly/disassembly; 2. Corrosion of zinc-nickel plating in acidic environments; 3. Loosening induced by drilling vibration | 1. Torque to 75±5 N·m in accordance with GB/T 3098.1; 2. Apply acid-resistant anti-rust oil to screws after each use; 3. Use thread lock compound (medium strength) for vibration-prone applications | Tensile Strength: ≥1000MPa; Corrosion Resistance: Acid spray test ≥800h; Thread Standard: M12×1.75 | Shenkai 7 7/8" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: 27SiMn alloy steel; Seal assembly: Acid-resistant 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 130℃ | Piston Diameter: 150mm; Max Hydraulic Pressure: 31.5MPa; Cylinder Liner Roughness: Ra ≤0.8μm | Shenkai 7 7/8" Multi-Ram BOP (Hydraulic Cylinder) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13NiMo stainless steel; Valve seat: Stellite 6 alloy; Gasket: Acid-resistant 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 acidic fluids | 1. Limit hydraulic oil flow rate within 16 L/min; 2. Replace gaskets every 6 months or 50 valve cycles (whichever comes first); 3. Clean valve interior with acid-resistant inhibitor after well completion | Max Working Pressure: 85MPa; Temperature Range: -20℃~130℃; Valve Port Diameter: 26mm | Shenkai 7 7/8" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01V.01-00 | Bushing: 42CrMo alloy steel; Retaining ring: 65Mn spring steel; Seal ring: Acid-resistant 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 BOP with a protective tarp when not in use to avoid sunlight exposure | Bushing Inner Diameter: 75±0.03mm; Max Working Pressure: 85MPa; Temperature Range: -40℃~150℃ | Shenkai 7 7/8" Multi-Ram BOP (Ram Guide Assembly) |
Procurement Guidance
All 5 7/8", 8 5/8", 9 7/8", and 7 7/8" series parts for Shenkai multi-ram BOPs listed in this document are manufactured in strict compliance with API Spec 16A, GB/T 22513, and NACE MR0175 (for sour service) standards. Each product is equipped with a complete quality inspection certificate and unique traceability code, ensuring product authenticity, performance reliability, and full compatibility with original Shenkai BOP assemblies.
When purchasing, it is recommended to confirm the exact nominal size of your Shenkai multi-ram BOP and the corresponding part number to avoid mismatches. For special working conditions (such as HTHP, sour service, acidic formations, offshore deepwater environments), please contact our technical team in advance. Our professional engineers will provide customized material selection and technical solution support based on your specific drilling scenarios. Choosing genuine matching parts is critical to ensuring the safe and efficient operation of well control equipment. If you have any needs for product selection, technical consultation, or procurement, please feel free to contact our team. We are committed to providing you with high-quality products and professional services to safeguard your drilling operations.
contact us ：
Emeil: [email protected] whatsapp: +86 15275658619
Should you have any purchase intentions, please contact us – we will offer you our most favorable price.