Core Purpose & Adaptive Scope
This document focuses on the matching parts of Shenkai Multi-Ram Blowout Preventor (BOP), specifically compatible with Shenkai's 3 1/2", 4 1/2", 5", 7" multi-ram BOP models and blind ram BOP configurations. It is tailored for targeted user groups including onshore/offshore oilfield drilling contractors, oil and gas exploration and production enterprises, drilling equipment maintenance and service providers, and well control system engineering companies.
Core Purpose: To address critical pain points in well control operations, such as equipment downtime caused by damaged BOP parts, compromised well control safety due to mismatched components, and high maintenance costs of inferior replacement parts. These parts are engineered in strict accordance with API Spec 16A (American Petroleum Institute) and GB/T 22513 standards, ensuring full interchangeability with original Shenkai multi-ram BOPs. The value proposition lies in providing high-precision, wear-resistant, and pressure-resistant components that guarantee the reliability of well control systems during drilling, completion, and workover operations. They are scenario-anchored in onshore oil and gas wells, offshore shallow-deep wells, and high-pressure formation drilling projects, effectively preventing blowout accidents and safeguarding personnel and equipment safety.
Product Classification & Detailed Specifications
The following products are classified by the nominal size of Shenkai multi-ram BOP (including blind ram type). Each category includes a detailed product description that integrates pain point reinforcement, value preposition, and scenario anchoring. The specification table covers material information, main wear causes, and usage precautions with in-depth and differentiated details, serving as a dual reference for procurement decision-making and technical maintenance.
Category 1: 5" Shenkai Multi-Ram BOP Parts
Product Description: This series of parts is custom-machined for Shenkai 5" multi-ram BOPs, targeting the core pain points of 5" BOP systems—such as ram seal failure under high well pressure, thread wear of fasteners during frequent assembly and disassembly, and deformation of structural components due to alternating loads. All components adopt precision machining and heat treatment processes to ensure dimensional accuracy and structural stability. Scenario Anchoring: Widely applied in onshore medium-deep oil and gas wells (well depth 2000-4500m) and offshore shallow wells with 5" drill pipes, suitable for well control operations in formations with medium to high pressure (formation pressure ≤70MPa). Value Preposition: The seal components feature enhanced wear resistance and pressure-bearing capacity, extending the service life by 40% compared to standard replacement parts; the fasteners comply with GB70 standard, ensuring reliable connection and reducing the risk of loosening during high-vibration operations.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01A-00 | Main body: 4140 alloy steel (quenched and tempered); Seal ring: Nitrile rubber (NBR) reinforced with aramid fiber; Connecting pins: 304 stainless steel | 1. Erosion and wear of seal ring by drilling fluid containing solid particles; 2. Fatigue deformation of 4140 steel body under long-term alternating pressure; 3. Corrosion of connecting pins by downhole corrosive gas (H₂S/CO₂) | 1. Before installation, inspect the seal ring for cracks or aging; replace if the Shore hardness is less than 75±5 HA; 2. For H₂S-containing formations (H₂S partial pressure ≥0.0003MPa), conduct regular NACE MR0175 corrosion resistance testing on connecting pins; 3. After each well control operation, clean the part surface with neutral detergent to remove drilling fluid residues | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Dimensional Tolerance: ±0.02mm | Shenkai 5" Multi-Ram BOP |
2 | DFZ1310.01A-03 | Ram block: 4130 alloy steel (carburized and quenched); Guide sleeve: Bronze alloy (CuSn10); O-ring: Fluororubber (FKM) | 1. Abrasion of ram block surface due to contact with drill pipe during ram closing; 2. Seizure of guide sleeve caused by insufficient lubrication; 3. Thermal aging of FKM O-ring under high-temperature downhole conditions | 1. Apply high-temperature resistant molybdenum disulfide lubricant to the guide sleeve before assembly; reapply every 300 working hours; 2. Check the ram block surface for scratches after each use; grind and polish if the scratch depth exceeds 0.2mm; 3. Control the downhole fluid temperature within 120℃; avoid prolonged operation beyond the temperature limit | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Ram Closing Stroke: 85±2mm | Shenkai 5" Multi-Ram BOP |
3 | GB70 M12×65 | Screw: 8.8-grade alloy steel (20MnTiB); Surface treatment: Zinc plating with passivation; Nut: 8.8-grade carbon steel (45#) | 1. Thread wear during frequent assembly and disassembly; 2. Hydrogen embrittlement of zinc-plated layer in humid environments; 3. Loosening and wear caused by drilling vibration | 1. Use torque wrench for installation; control the tightening torque at 45-50 N·m (compliant with GB/T 3098.1 standard); 2. Avoid repeated use of screws more than 5 times; replace with new parts if thread damage is found; 3. Store in a dry and ventilated environment; apply anti-rust oil to the thread before storage | Thread Standard: Metric coarse thread; Tensile Strength: ≥800MPa; Hardness: 22-32 HRC | Shenkai 5" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic cylinder piston: 27SiMn alloy steel; Seal assembly: Polyurethane (PU) composite seal; Piston rod: 40Cr (chromium plating) | 1. Scratching of piston rod chrome plating by contaminant particles in hydraulic oil; 2. Seal leakage caused by deformation of PU seal under high pressure; 3. Corrosion of piston inner wall by water-containing hydraulic oil | 1. Ensure the hydraulic oil cleanliness grade reaches NAS 8; install high-precision filters in the hydraulic system; 2. Check the hydraulic system pressure regularly; avoid overpressure operation exceeding 70MPa; 3. Drain water from the hydraulic oil tank weekly; use anti-wear and anti-corrosion hydraulic oil (ISO VG 46) | Max Hydraulic Pressure: 31.5MPa; Piston Diameter: 125mm; Chrome Plating Thickness: 0.05-0.08mm | Shenkai 5" Multi-Ram BOP (Hydraulic Actuation System) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13 stainless steel (heat treated); Valve seat: Stellite 6 alloy; Gasket: Spiral wound gasket (316L+graphite) | 1. Erosion of valve core and seat by high-velocity hydraulic oil; 2. Wear of spiral wound gasket due to repeated opening and closing; 3. Corrosion of 4Cr13 valve core in acidic environments | 1. Monitor the flow rate of hydraulic oil; control within 15 L/min to reduce erosion; 2. Replace the spiral wound gasket every 6 months or after 50 times of opening and closing; 3. For acidic downhole environments (pH ≤6), use acid-resistant coating for valve core surface treatment | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Valve Port Diameter: 25mm | Shenkai 5" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01A.01-00 | Bushing: 42CrMo alloy steel; Seal ring: Ethylene Propylene Diene Monomer (EPDM); Retaining ring: 65Mn spring steel | 1. Wear of bushing inner wall due to relative movement with ram; 2. Aging of EPDM seal ring under ultraviolet radiation (for offshore BOPs); 3. Fatigue failure of 65Mn retaining ring under repeated loading | 1. Check the bushing inner diameter for wear every 400 working hours; replace if the wear amount exceeds 0.15mm; 2. For offshore applications, install protective covers to avoid direct ultraviolet radiation on seals; 3. Inspect the retaining ring for cracks regularly; replace if any fatigue signs are found | Max Working Pressure: 70MPa; Temperature Range: -40℃~150℃; Bushing Inner Diameter: 55±0.03mm | Shenkai 5" Multi-Ram BOP (Ram Guide Assembly) |
Category 2: 4 1/2" Shenkai Multi-Ram BOP Parts
Product Description: Designed exclusively for Shenkai 4 1/2" multi-ram BOPs, this part series focuses on resolving pain points unique to 4 1/2" wellbore operations—including insufficient seal compatibility with 4 1/2" drill pipes, premature wear of components due to high-frequency ram actuation in deviated wells, and corrosion of parts in offshore saltwater environments. The parts are optimized for dimensional matching with 4 1/2" drill pipes, ensuring tight sealing and stable operation. Scenario Anchoring: Suitable for onshore deviated wells (deviation angle ≤30°) and offshore shallow-deep wells with 4 1/2" drill pipes, widely used in oil and gas exploration projects in Bohai Bay, Songliao Basin, etc. Value Preposition: The ram seal adopts a profiled design matching 4 1/2" drill pipe outer diameter, improving sealing reliability by 35%; key components use marine-grade anti-corrosion materials, with salt spray corrosion resistance time ≥1000 hours, adapting to harsh offshore environments.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01B-00 | Main housing: 4140 alloy steel (quenched and tempered); Profiled seal: NBR-aramid fiber composite; Connecting shaft: 316L stainless steel | 1. Uneven wear of profiled seal due to drill pipe eccentricity in deviated wells; 2. Corrosion of 316L connecting shaft by offshore salt spray; 3. Fatigue cracking of housing under alternating pressure | 1. For deviated wells, check the seal contact surface for uneven wear after each use; adjust ram alignment if necessary; 2. For offshore applications, clean the connecting shaft with fresh water after use and apply anti-corrosion grease; 3. Conduct ultrasonic flaw detection on the housing every 12 months to detect hidden cracks | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Matching Drill Pipe OD: 114.3mm (4 1/2") | Shenkai 4 1/2" Multi-Ram BOP |
2 | DFZ1310.01B-02 | Ram insert: 4130 alloy steel (carburized); Guide rail: Bronze alloy (CuAl10Fe3); Seal ring: FKM | 1. Abrasion of ram insert by drill pipe during frequent clamping; 2. Galling of guide rail due to insufficient lubrication; 3. Thermal aging of FKM seal in high-temperature downhole fluid | 1. Apply high-temperature lubricating grease (temperature resistance ≥150℃) to the guide rail before each operation; 2. Check the ram insert surface for wear grooves; grind if the groove depth exceeds 0.2mm; 3. Avoid prolonged operation in downhole fluid temperature exceeding 120℃; take cooling measures if necessary | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Ram Closing Force: ≥120kN | Shenkai 4 1/2" Multi-Ram BOP |
3 | GB70 M12×65 | Screw: 8.8-grade 20MnTiB alloy steel; Surface treatment: Zinc-nickel alloy plating (10-15μm); Nut: 8.8-grade 45# steel | 1. Thread wear during repeated assembly/disassembly; 2. Corrosion of zinc-nickel plating in saltwater environments; 3. Loosening caused by drilling vibration and alternating loads | 1. Use calibrated torque wrench for installation; tightening torque strictly follows 45-50 N·m (GB/T 3098.1); 2. For offshore use, inspect the plating layer for peeling every month; touch up with anti-corrosion paint if needed; 3. Install spring washers to enhance anti-loosening performance; replace washers when they lose elasticity | Thread Standard: M12×1.75; Tensile Strength: ≥800MPa; Corrosion Resistance: Salt spray test ≥1000h | Shenkai 4 1/2" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: 27SiMn alloy steel; Composite seal: PU+FKM; Piston rod: 40Cr (hard chrome plating) | 1. Scratching of chrome plating by impurities in hydraulic oil; 2. Seal leakage due to high-pressure deformation; 3. Corrosion of piston by water-in-oil emulsion | 1. Maintain hydraulic oil cleanliness at NAS 8 level; replace oil filter elements every 500 working hours; 2. Monitor system pressure; do not exceed 31.5MPa (rated hydraulic pressure); 3. Check oil water content weekly; keep it below 0.1%; add demulsifier if necessary | Max Hydraulic Pressure: 31.5MPa; Piston Diameter: 110mm; Chrome Plating Hardness: ≥60 HRC | Shenkai 4 1/2" Multi-Ram BOP (Hydraulic Actuation System) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13 stainless steel; Valve seat: Stellite 6; Gasket: 316L spiral wound gasket with graphite filler | 1. Erosion of valve core/seat by high-velocity hydraulic oil flow; 2. Gasket wear due to repeated valve opening/closing; 3. Corrosion of valve core in H₂S-containing environments | 1. Control hydraulic oil flow rate within 12 L/min to minimize erosion; 2. Replace spiral wound gasket every 50 valve operations or 6 months; 3. For H₂S environments, ensure valve core complies with NACE MR0175 standard; conduct corrosion testing annually | Max Working Pressure: 70MPa; Temperature Range: -20℃~120℃; Valve Type: Globe Valve | Shenkai 4 1/2" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01B.01-00 | Bushing: 42CrMo alloy steel; Seal ring: EPDM; Circlip: 65Mn spring steel (heat treated) | 1. Wear of bushing due to ram reciprocating movement; 2. EPDM seal aging under sunlight (onshore BOPs); 3. Circlip fatigue failure under repeated expansion/contraction | 1. Measure bushing inner diameter wear every 300 working hours; replace if wear >0.15mm; 2. For onshore BOPs, cover seals with protective caps when not in use; avoid direct sunlight; 3. Inspect circlip for fatigue cracks monthly; replace immediately if cracks are found | Max Working Pressure: 70MPa; Temperature Range: -40℃~150℃; Bushing Inner Diameter: 50±0.03mm | Shenkai 4 1/2" Multi-Ram BOP (Ram Guide Assembly) |
Category 3: 3 1/2" Shenkai Multi-Ram BOP Parts
Product Description: This series is engineered for Shenkai 3 1/2" multi-ram BOPs, addressing core pain points in small-bore well control operations—such as poor seal performance of small-size rams, high precision requirements for component matching, and vulnerability of parts to damage during transportation and installation. All parts undergo precision grinding and strict dimensional inspection to ensure perfect matching with 3 1/2" BOPs. Scenario Anchoring: Applied in onshore shallow wells (well depth ≤2000m), horizontal well sections, and small-bore exploration wells with 3 1/2" drill pipes, suitable for low to medium pressure formations (formation pressure ≤50MPa). Value Preposition: The miniaturized hydraulic components feature high response speed, reducing ram actuation time by 25% and improving emergency well control efficiency; the lightweight design of structural parts facilitates on-site installation and maintenance, reducing labor costs.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01C-00 | Housing: 4140 alloy steel (quenched and tempered); Miniature seal: NBR-aramid composite; Pin: 304 stainless steel | 1. Seal damage due to improper installation (small-size seals are fragile); 2. Pin corrosion in humid well sites; 3. Housing deformation due to improper transportation stacking | 1. Use special installation tools for miniature seals; avoid direct manual extrusion; 2. Apply anti-rust oil to pins before storage; store in sealed packaging; 3. Transport with dedicated brackets; avoid stacking heavy objects on the housing | Max Working Pressure: 50MPa; Temperature Range: -20℃~120℃; Matching Drill Pipe OD: 88.9mm (3 1/2") | Shenkai 3 1/2" Multi-Ram BOP |
2 | DFZ1310.01C-02 | Small-size ram: 4130 alloy steel; Guide sleeve: CuSn8 bronze; Seal ring: FKM | 1. Abrasion of ram surface by 3 1/2" drill pipe; 2. Guide sleeve seizure due to insufficient lubrication; 3. FKM seal aging in high-temperature downhole | 1. Apply thin-layer high-temperature lubricant to the guide sleeve; avoid excessive lubricant attracting impurities; 2. Check ram surface for wear after each use; polish with fine sandpaper if slight wear exists; 3. Monitor downhole temperature; do not exceed 120℃ for long periods | Max Working Pressure: 50MPa; Temperature Range: -20℃~120℃; Ram Stroke: 70±2mm | Shenkai 3 1/2" Multi-Ram BOP |
3 | GB70 M12×65 | Screw: 8.8-grade 20MnTiB; Surface treatment: Zinc plating; Nut: 8.8-grade 45# steel | 1. Thread damage during manual tightening (over-torque); 2. Zinc plating corrosion in humid environments; 3. Loosening due to well site vibration | 1. Must use torque wrench; strictly control tightening torque at 45-50 N·m; 2. Inspect screws for rust every 2 months; replace if corrosion is severe; 3. Use lock washers to prevent loosening; check washer tightness regularly | Thread Standard: M12×1.75; Tensile Strength: ≥800MPa; Hardness: 22-32 HRC | Shenkai 3 1/2" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Miniature piston: 27SiMn alloy steel; Seal assembly: PU composite; Piston rod: 40Cr (chrome plating) | 1. Piston rod chrome plating scratching by hydraulic oil impurities; 2. Seal leakage due to small-size seal deformation; 3. Piston corrosion by water-containing hydraulic oil | 1. Use high-precision filters (10μm) in the hydraulic system; replace filters regularly; 2. Check seal assembly for deformation before installation; replace if any irregularities; 3. Keep hydraulic oil dry; drain water from the tank weekly | Max Hydraulic Pressure: 31.5MPa; Piston Diameter: 90mm; Chrome Plating Thickness: 0.05-0.08mm | Shenkai 3 1/2" Multi-Ram BOP (Hydraulic Actuation System) |
5 | DFZ1310.01A-04 | Small-size valve core: 4Cr13 stainless steel; Valve seat: Stellite 6; Gasket: Miniature spiral wound gasket | 1. Erosion of small-size valve core by high-velocity oil flow; 2. Gasket damage during valve disassembly; 3. Valve core corrosion in acidic environments | 1. Control hydraulic oil flow rate within 10 L/min; reduce erosion impact; 2. Disassemble valves with special tools; avoid damaging gaskets; 3. For acidic formations, use corrosion-resistant valve core coating; conduct annual corrosion inspection | Max Working Pressure: 50MPa; Temperature Range: -20℃~120℃; Valve Port Diameter: 20mm | Shenkai 3 1/2" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01C.01-00 | Miniature bushing: 42CrMo alloy steel; Seal ring: EPDM; Retaining ring: 65Mn spring steel | 1. Bushing wear due to ram reciprocation; 2. EPDM seal aging under sunlight; 3. Retaining ring fatigue failure | 1. Inspect bushing wear every 250 working hours; replace if wear >0.1mm; 2. Cover seals with protective caps when BOP is not in use; 3. Check retaining ring for elasticity monthly; replace if it cannot rebound effectively | Max Working Pressure: 50MPa; Temperature Range: -40℃~150℃; Bushing Inner Diameter: 45±0.03mm | Shenkai 3 1/2" Multi-Ram BOP (Ram Guide Assembly) |
Category 4: 7" Shenkai Multi-Ram BOP Parts
Product Description: Tailored for Shenkai 7" multi-ram BOPs, this part series addresses the unique pain points of large-bore well control operations—including high stress on structural components under high pressure, rapid wear of ram seals due to large contact area with 7" drill pipes, and difficulty in maintaining component alignment. The parts are manufactured with thickened structural design and high-strength materials to ensure load-bearing capacity. Scenario Anchoring: Used in onshore deep wells (well depth ≥4500m) and offshore deepwater wells with 7" drill pipes, suitable for high-pressure and high-temperature (HTHP) formations (formation pressure ≤105MPa, temperature ≤150℃). Value Preposition: The thickened ram design enhances impact resistance; the seal ring adopts a multi-layer composite structure, improving sealing performance and service life under high pressure; the precision-machined guide components ensure ram alignment, reducing wear and extending the overall BOP service life.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01D-00 | Thickened housing: 4140 alloy steel (quenched and tempered, thickness ≥50mm); Multi-layer seal: FKM+aramid fiber+metal skeleton; Connecting shaft: 34CrNiMo6 alloy steel | 1. High-pressure fatigue deformation of housing; 2. Seal damage due to uneven pressure distribution on large contact area; 3. Connecting shaft wear under high torque | 1. Conduct regular pressure testing (every 6 months) in accordance with API Spec 16A; do not exceed rated pressure; 2. Check seal surface for uneven wear; adjust ram pressure distribution if necessary; 3. Lubricate connecting shaft with high-pressure grease every 200 working hours | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Matching Drill Pipe OD: 177.8mm (7") | Shenkai 7" Multi-Ram BOP |
2 | DFZ1310.01D-02 | Thickened ram: 4130 alloy steel (carburized layer thickness ≥2mm); Guide rail: CuAl10Fe3 bronze (thickened); Seal ring: Multi-layer FKM | 1. Abrasion of ram surface due to large-diameter drill pipe contact; 2. Guide rail deformation under high ram force; 3. Seal aging under HTHP conditions | 1. Inspect ram surface for wear every 150 working hours; grind if wear exceeds 0.3mm; 2. Check guide rail straightness with laser alignment tool; adjust if deviation >0.1mm/m; 3. For HTHP operations, replace seals every 3 months regardless of wear condition | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Ram Closing Force: ≥250kN | Shenkai 7" Multi-Ram BOP |
3 | GB70 M12×65 | Screw: 10.9-grade 35CrMo alloy steel; Surface treatment: Phosphating + oil immersion; Nut: 10.9-grade 40Cr steel | 1. High stress wear of threads under large structural loads; 2. Corrosion of phosphating layer in humid environments; 3. Loosening due to high-frequency vibration in deep wells | 1. Use high-precision torque wrench; tightening torque strictly follows 60-65 N·m (GB/T 3098.1); 2. Re-tighten screws after the first 10 working hours of installation; 3. Store spare screws in oil-immersed packaging; avoid moisture | Thread Standard: M12×1.75; Tensile Strength: ≥1000MPa; Hardness: 33-39 HRC | Shenkai 7" Multi-Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Large-diameter piston: 27SiMn alloy steel (thickened); Seal assembly: High-pressure PU composite; Piston rod: 40Cr (hard chrome plating, thickness ≥0.1mm) | 1. Piston deformation under high hydraulic pressure; 2. Seal leakage due to high pressure; 3. Piston rod chrome plating wear by hydraulic oil impurities | 1. Monitor hydraulic system pressure strictly; do not exceed 31.5MPa; 2. Use high-pressure resistant seals (rated pressure ≥105MPa); 3. Install double filters in the hydraulic system; ensure oil cleanliness at NAS 7 level | Max Hydraulic Pressure: 31.5MPa; Piston Diameter: 160mm; Chrome Plating Hardness: ≥62 HRC | Shenkai 7" Multi-Ram BOP (Hydraulic Actuation System) |
5 | DFZ1310.01A-04 | Valve core: 4Cr13NiMo stainless steel; Valve seat: Stellite 21 alloy; Gasket: High-pressure spiral wound gasket (316L+Inconel 625) | 1. Severe erosion of valve core/seat by high-velocity, high-pressure hydraulic oil; 2. Gasket deformation under high pressure; 3. Corrosion of valve core in H₂S/CO₂ environments | 1. Control hydraulic oil flow rate within 18 L/min; install flow restrictors if necessary; 2. Replace gaskets after each pressure test; 3. For sour service (H₂S partial pressure ≥0.0003MPa), use NACE MR0175 certified components; conduct annual corrosion inspection | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Valve Port Diameter: 32mm | Shenkai 7" Multi-Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01D.01-00 | Thickened bushing: 42CrMo alloy steel; Seal ring: High-temperature EPDM; Circlip: 65Mn spring steel (heat treated, thickened) | 1. Bushing wear due to large ram movement; 2. EPDM seal aging under high temperature; 3. Circlip failure under high expansion force | 1. Inspect bushing wear every 200 working hours; replace if wear >0.2mm; 2. For HTHP operations, use high-temperature resistant EPDM (temperature resistance ≥150℃); 3. Check circlip for fatigue cracks monthly; replace if any signs are found | Max Working Pressure: 105MPa; Temperature Range: -40℃~150℃; Bushing Inner Diameter: 70±0.03mm | Shenkai 7" Multi-Ram BOP (Ram Guide Assembly) |
Category 5: Shenkai Blind Ram BOP Parts
Product Description: This series is dedicated to Shenkai blind ram BOPs, which are critical for well closure when no drill pipe is in the wellbore. It addresses core pain points such as blind ram seal failure under full well pressure, structural damage due to impact during emergency closure, and corrosion of sealing surfaces. The blind ram head adopts an integral forging design, and the seal surface is precision lapped to ensure tight closure. Scenario Anchoring: Applied in emergency well control operations (e.g., drill pipe sticking, blowout prevention) in onshore/offshore oil and gas wells, suitable for sealing wellbores of various sizes (matching 3 1/2" to 7" BOPs) under low to high pressure (≤105MPa). Value Preposition: The integral forging blind ram has high impact resistance, avoiding deformation during emergency closure; the seal surface adopts a self-compensating design, enhancing sealing reliability under high pressure; all parts comply with API Spec 16A and GB/T 22513 standards, ensuring compliance with well control safety regulations.
Product Serial Number | Part Number | Material Specification | Main Wear Causes | Usage Precautions | Key Technical Parameters | Applicable BOP Model |
1 | DFZ1310.01E-00 | Integral blind ram head: 4140 alloy steel (forged); Seal surface: Tungsten carbide coating; Housing: 4140 alloy steel (quenched and tempered) | 1. Seal surface damage due to foreign objects in the wellbore; 2. Housing fatigue under repeated emergency closure; 3. Tungsten carbide coating peeling due to impact | 1. Inspect the wellbore for foreign objects before closing the blind ram; clean if necessary; 2. Conduct pressure testing after each emergency closure; check for leaks; 3. Avoid frequent non-emergency closure to reduce housing fatigue | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Seal Surface Flatness: ≤0.005mm/m | Shenkai Blind Ram BOP (Matching 3 1/2"-7" Wellbores) |
2 | DFZ1310.01E-02 | Ram guide: 42CrMo alloy steel; Seal ring: Self-compensating FKM composite; Bushing: Bronze alloy (CuSn10) | 1. Guide wear due to blind ram rapid movement during emergency closure; 2. Seal ring deformation under high pressure; 3. Bushing seizure due to insufficient lubrication | 1. Apply high-pressure, high-temperature lubricant to the guide before each use; 2. Check seal ring for deformation after pressure testing; replace if needed; 3. Test ram movement flexibility monthly; ensure no jamming | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Ram Closing Speed: 0.8-1.2 m/s | Shenkai Blind Ram BOP |
3 | GB70 M12×65 | Screw: 10.9-grade 35CrMo alloy steel; Surface treatment: Zinc-nickel plating; Nut: 10.9-grade 40Cr steel | 1. Thread damage due to high torque during installation; 2. Corrosion of zinc-nickel plating in harsh well environments; 3. Loosening due to emergency closure vibration | 1. Use calibrated torque wrench; tightening torque 60-65 N·m (GB/T 3098.1); 2. Inspect screws for corrosion monthly; touch up with anti-corrosion paint if plating is damaged; 3. Install anti-loosening nuts to ensure connection reliability | Thread Standard: M12×1.75; Tensile Strength: ≥1000MPa; Corrosion Resistance: Salt spray test ≥1000h | Shenkai Blind Ram BOP (Fastening Component) |
4 | DFZ1310.01A-02 | Hydraulic piston: 27SiMn alloy steel; Seal assembly: High-pressure PU+FKM composite; Piston rod: 40Cr (hard chrome plating) | 1. Piston deformation due to rapid pressure rise during emergency actuation; 2. Seal leakage due to high pressure; 3. Piston rod wear by hydraulic oil impurities | 1. Ensure hydraulic system pressure stability during actuation; avoid rapid pressure spikes; 2. Use high-pressure resistant seals (rated pressure ≥105MPa); 3. Maintain hydraulic oil cleanliness at NAS 7 level; replace filters regularly | Max Hydraulic Pressure: 31.5MPa; Piston Diameter: 140mm; Chrome Plating Hardness: ≥62 HRC | Shenkai Blind Ram BOP (Hydraulic Actuation System) |
5 | DFZ1310.01A-04 | Control valve core: 4Cr13NiMo stainless steel; Valve seat: Stellite 21; Gasket: High-pressure spiral wound gasket | 1. Erosion of valve core by rapid hydraulic oil flow during emergency actuation; 2. Gasket damage under high pressure; 3. Corrosion of valve core in sour environments | 1. Test valve response time monthly; ensure it meets emergency requirements (≤0.5s); 2. Replace gaskets after each pressure test; 3. For sour service, use NACE MR0175 certified components; conduct annual corrosion inspection | Max Working Pressure: 105MPa; Temperature Range: -20℃~150℃; Valve Response Time: ≤0.5s | Shenkai Blind Ram BOP (Control Valve Assembly) |
6 | DFZ1310.01E.01-00 | Retaining ring: 65Mn spring steel (heat treated); Seal ring: EPDM; Bushing: 42CrMo alloy steel | 1. Retaining ring fatigue failure under repeated ram movement; 2. EPDM seal aging under environmental factors; 3. Bushing wear due to ram reciprocation | 1. Inspect retaining ring for cracks monthly; replace if any fatigue signs; 2. Store spare seals in a dry, cool environment; avoid sunlight and high temperature; 3. Check bushing wear every 200 working hours; replace if wear >0.15mm | Max Working Pressure: 105MPa; Temperature Range: -40℃~150℃; Bushing Inner Diameter: 65±0.03mm | Shenkai Blind Ram BOP (Ram Guide Assembly) |
Procurement Guide & Safety Compliance
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. When purchasing, it is recommended to confirm the exact BOP model and nominal size to ensure perfect matching. For special working conditions (such as HTHP, sour service, offshore saltwater environments), please inform our technical team to provide customized material and process solutions.
To ensure the safety and reliability of well control operations, we strongly recommend 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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