SJ Petro Drilling Rig & Workover Rig Spare Parts

1. Introduction

1.1 Applicable Equipment Models & Spare Parts Scope

This document focuses on spare parts supply and professional technical support for SJ Petro drilling rigs and workover rigs, covering all listed models and a comprehensive range of components. Applicable rig models include ZJ Series (ZJ10/1125CZ, ZJ15/1350CZ, ZJ20/1470CZ, ZJ30/1700CZ, ZJ40/2250CZ, ZJ15/1125CT, ZJ30/1800CT, ZJ40/2250L, ZJ15/1125TZ, ZJ30/1800TZ, ZJ40/2250DL, ZJ40/2250LDB, ZJ50/3150L, ZJ50/3150LDB), LS Series (LS30DB/1700TZ, LS30/1700DBT, LS20H), BE Series (BE550(ZJ40/2250DB), BE770(ZJ50/3150DB)). The spare parts portfolio covers hydraulic/pneumatic lines, structural components, transmission parts, electrical assemblies, and functional accessories, including key parts like differential lock lines (Z08120000002AA), traveling block assemblies (Z16120100016AA), ZP275 rotary table assemblies (Z16140000004AA), and driving system components (e.g., 5000700027, Z06100000001AA). All parts fully comply with SJ Petro’s OEM specifications for seamless compatibility.

1.2 Target User Needs & Core Purpose

Target users include oil and gas exploration companies, drilling/workover service providers, rig maintenance teams, and equipment management departments operating SJ Petro drilling and workover rigs. Key user needs focus on obtaining OEM-compatible, high-durability spare parts, resolving common component faults efficiently, accessing standardized maintenance guidance, and securing reliable procurement support to minimize unplanned downtime. The core purpose is to provide a one-stop reference integrating product details, technical parameters, fault resolution, and procurement guidelines, adhering to industry standards to support safe, continuous, and cost-effective rig operations.

2. Product Overview

We supply a full range of high-quality spare parts for SJ Petro drilling rigs and workover rigs, covering hydraulic lines (e.g., drawworks lines, jack lines), pneumatic components (air compressor assembly, crown-o-matic air cylinder), structural parts (deck frame assembly, mast assembly), transmission components (driving shafts, universal couplings), electrical harnesses, rotary table/traveling block assemblies, and more. All products comply with API Spec 7K (Drilling Rig Components), API Spec 11E (Workover Rigs), and relevant GB/T national standards, undergoing rigorous quality control—including material composition testing, dimensional accuracy calibration, fatigue resistance, and corrosion resistance verification. Each part is engineered to match SJ Petro’s original design, ensuring consistent performance and meeting routine replacement, emergency repair, and preventive maintenance needs.

3. Functional Description

3.1 Core Component Functions

Each spare part fulfills critical operational functions for SJ Petro rigs: Hydraulic/pneumatic lines (e.g., Z08060000002AA, Z08120000002AA) ensure stable fluid/gas transmission for lifting, braking, and control systems; traveling block and hook assemblies (Z16120000045AA, Z16120100016AA) support safe drill string hoisting; ZP275 rotary table assemblies (Z16140000004AA) drive drill string rotation with precise alignment; driving shafts and couplings (5000700027, Z06100000001AA) enable reliable power transmission across the rig; electrical harnesses (Z09000000150AA-AED) ensure seamless signal and power supply for control systems. All parts integrate to maintain the rig’s core operational capabilities.

3.2 Model-Specific Adaptability

Spare parts are tailored to SJ Petro’s diverse rig models: Heavy-duty ZJ40/ZJ50 series parts (e.g., ZJ40/2250LDB, ZJ50/3150LDB) feature enhanced load-bearing capacity for deep drilling; compact LS/LS20H series parts prioritize portability for flexible workover operations; BE series parts (BE550, BE770) are optimized for medium-load scenarios, balancing durability and cost-effectiveness. Specialized components like BOP handling guiderails (Z05090900001AA) and auxiliary brake systems (Z03280000003AA) align with each model’s unique operational requirements.

4. Structural Features

4.1 Material Selection

Key components adopt high-strength alloy steel (40Cr, 20CrMnTi) for structural parts and driving shafts, treated with quenching/tempering to enhance hardness and fatigue life. Hydraulic/pneumatic lines use corrosion-resistant steel and high-pressure rubber, complying with API 16D standards for leak-free performance. Sealing elements use nitrile or fluorine rubber for compatibility with harsh drilling fluids and extreme temperatures. Fasteners (e.g., 10.9 grade hex bolts) meet GB standards for secure high-load connections, while electrical components use flame-retardant materials for on-site safety.

4.2 Design Highlights

Parts follow SJ Petro’s original modular design, optimizing stress distribution to avoid concentration during high-load operations. Hydraulic/pneumatic lines (e.g., Z08090000001AA) feature anti-kink structures for flexible routing; traveling block assemblies use precision bearings to reduce friction; driving shafts (5000700027) are precision-machined for balanced rotation. Standardized interfaces facilitate quick installation/replacement, while reinforced frames (Z03050000136AA) enhance structural stability in vibrating environments.

5. Applicable Working Conditions

Our spare parts adapt to the diverse working conditions of SJ Petro rigs, including onshore oil/gas fields, shale gas exploration, coalbed methane wells, and geothermal drilling. They withstand extreme temperatures (-45℃ to 65℃), high humidity, dust, saline-alkali soil, and strong vibration—suitable for desert, mountain, coastal, or plain operations. Corrosion-resistant coatings on structural parts and high-pressure lines ensure durability in harsh drilling fluid environments, while heat-resistant components (e.g., auxiliary brake systems) maintain performance during prolonged high-load use.

6. Maintenance & Service Recommendations

6.1 Routine Maintenance

1. Regular Inspection: Conduct weekly checks of hydraulic/pneumatic lines for leaks, fasteners for tightness, and rotating parts (bearings, shafts) for smooth operation. Inspect electrical harnesses for wear or loose connections. 2. Lubrication: Inject API-compliant high-temperature anti-wear grease into bearings, couplings, and rotary tables every 120 working hours; flush hydraulic lines quarterly to remove contaminants. 3. Cleaning: Remove drilling fluid residues and dust from parts (especially rotary tables and traveling blocks) to prevent corrosion and blockage.

6.2 Replacement & Installation Guidelines

1. Replacement Timing: Replace parts per SJ Petro’s manual or when faults occur (e.g., line leaks, bearing wear >0.5mm, gear damage). 2. Installation: Use professional tools, torque fasteners to standard values, and align rotating parts (driving shafts, gears) precisely. For hydraulic lines, ensure proper routing to avoid kinking. 3. Post-Replacement Testing: Conduct a test run to verify no abnormal noise, vibration, or leaks, and confirm electrical/fluid systems operate correctly.

6.3 Storage & Preservation

Store parts in a dry, ventilated warehouse, avoiding sunlight, rain, or chemical exposure. Classify by model/part number and label clearly. Precision components (bearings, seals) go in sealed packaging; hydraulic lines are coiled to prevent kinking; electrical harnesses are stored in moisture-proof containers. Apply anti-rust oil to metal parts for long-term storage and inspect quarterly for damage.

Schematic diagram of driving system Z06070000207AA

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7. On-Site Fault Repair Cases

Case 1: ZJ40/2250CZ Hydraulic Line Leakage

Fault Phenomenon: A ZJ40/2250CZ rig had persistent hydraulic leakage from drawworks lines (Z08060000002AA), reducing lifting pressure. Diagnosis: Line corrosion and seal damage due to prolonged exposure to drilling fluid, exceeding API 16D pressure tolerance. Solution: Replaced the line with an OEM-compatible corrosion-resistant part, installed new fluorine rubber seals, and flushed the hydraulic system. Result: Leakage stopped, system pressure stabilized, and line service life extended by 60%.

Case 2: BE770(ZJ50/3150DB) Rotary Table Power Transmission Failure

Fault Phenomenon: A BE770 rig’s rotary table had intermittent power loss and abnormal noise, affecting drill string rotation. Diagnosis: Worn cage-type universal coupling (matching part no. 5000700024) and misaligned driving shaft, causing uneven power transmission. Solution: Replaced the coupling and realigned the shaft, lubricated with high-temperature grease. Result: Power transmission stabilized, noise eliminated, and rotary table operation returned to normal.

Case 3: LS30DB/1700TZ Traveling Block Bearing Damage

Fault Phenomenon: An LS30DB/1700TZ rig’s traveling block (Z16120100016AA) had rough rotation and overheating during hoisting. Diagnosis: Bearing contamination and insufficient lubrication, leading to raceway wear. Solution: Replaced the bearing with an OEM-compatible precision part, cleaned the block interior, and injected anti-wear grease. Result: Traveling block rotated smoothly, overheating ceased, and hoisting safety was restored.

Case 4: ZJ30/1800CT Electrical Harness Malfunction

Fault Phenomenon: A ZJ30/1800CT rig’s driller control box lost power intermittently, disrupting operational control. Diagnosis: Wear and short-circuit in the driller’s control box harness (Z09000000150AA-AED) due to vibration and dust.Solution: Replaced the harness with an OEM-compatible part, secured routing to reduce vibration, and installed dust covers. Result: Power supply stabilized, control box functioned normally, and downtime was minimized.

8. FAQ (Frequently Asked Questions)

9. Procurement Guide & Conclusion

We are dedicated to providing reliable, OEM-compatible spare parts and professional technical support for SJ Petro drilling and workover rig users, covering all listed models and components. Our products meet strict API and GB standards, with rigorous quality control to ensure durability in harsh drilling conditions. Whether you need routine replacement parts, emergency repair components, or technical consultation, we offer customized solutions to minimize downtime, reduce maintenance costs, and support safe, continuous operations. Guided by "quality first, customer-centric" principles, we deliver consistent value and responsive service. For procurement inquiries, model confirmation, or technical support, contact us anytime—we are committed to supporting your SJ Petro rig operations with reliable parts and expert guidance.

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Emeil: [email protected]   whatsapp: +86 15275658619

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