110703/110704 Cylinder Assembly, 117820-35-NC50B Pipe Handler Package &amp

1. Core Purpose & Target User Demand Orientation

This full-spectrum oilfield component set centers on 110703/110704 counterbalance cylinder assemblies and 117820-35-NC50B pipe handler package, covering hydraulic execution units, low-temperature drive parts, electrical service loop kits, manifold assemblies and dedicated maintenance accessory kits. It is exclusively engineered for onshore cold-region drilling and offshore platform drilling rigs, targeting field maintenance engineers, rig equipment procurement teams and drilling operation contractors. It solves prominent industry pain points including hydraulic system pressure drift, low-temperature component embrittlement, pipe handler positioning deviation, electrical circuit signal disconnection and gearbox lubrication failure. All products comply with API 7K drilling equipment standards and IEC 60079 low-temperature electrical specifications, with verified 7500-hour continuous operation stability data to support long-cycle, high-load and extreme ambient drilling operations.

2. Comprehensive Product Introduction & Functional Description

2.1 Core Hydraulic Execution Components

The 110687 4-foot counterbalance cylinder, 110703 and 110704 cylinder assemblies serve as the core load-bearing and pressure-control units for drilling hydraulic systems. Matched with 111935 rod end clevis and 112190-120 counterbalance package, they deliver precise load balancing and anti-drop protection for drilling pipe handling operations. The 117820-35-NC50B pipe handler package, supported by 119054-NC50B pipe handler kit and 30119592 hydraulic cylinder assembly, realizes stable clamping and precise positioning of drill pipes. The 94522-21N relief valve cartridge and 108894-P40 piston seal effectively prevent hydraulic overpressure damage and internal fluid leakage, stabilizing system working pressure within rated thresholds.

2.2 Drilling Mechanical & Structural Accessories

Key mechanical components include 94681-12 Code 61 bundle flange kit, 98898 external IBOP crank assembly, 110103-500 upper IBOP and 114706-500 lower IBOP, forming a complete wellbore pressure control structure. Auxiliary structural parts such as 114032 PH-50 wireline running adapter, 114175-LT manifold assembly, 117821 torque wrench assembly and 117941 cylinder clamp ensure structural fastening and precise tool calibration during equipment operation. The 92643-14 gearbox lubrication kit provides continuous lubrication for transmission components, eliminating abrasive wear caused by dry friction.

2.3 Low-Temperature Electrical & Integrated Packages

Low-temperature adaptive components cover 30179322-EX low-temperature motor housing and 30179323-A60R low-temperature electric package, ensuring reliable startup at -40°C extreme low temperature. Supporting parts including 30175151-86-200 electrical service loop kit, 30157552-X jumper cable kit and 30152011-200 VDC cable maintain stable electrical signal transmission under alternating vibration working conditions. All electrical configurations strictly follow D804000429-DIA-001 electrical schematic and 30175894 rig cabling diagram, ensuring standardized wiring and error-free signal matching.

3. Structural Characteristics & Exclusive Technical Advantages

All hydraulic cylinder assemblies adopt precision honed barrel structure with Ra 0.2μm surface finish, reducing internal seal wear and extending continuous service life to 7500 working hours under rated 35MPa load. Low-temperature series components adopt cryogenic-treated alloy materials, retaining structural toughness without brittle fracture at -40°C, which is 2000 hours longer in low-temperature service life than conventional standard parts. Electrical loop kits feature anti-torsion and waterproof integrated structure, resisting 24-hour alternating vibration interference without signal interruption. Flange kits and fastening accessories adopt standardized Code 61 pressure-resistant structure, avoiding interface oil leakage caused by assembly gap deviation. Every component undergoes strict factory pressure testing and signal calibration to ensure dimensional and performance consistency with original rig equipment.

4. Applicable Working Conditions

This component suite adapts to onshore cold-region oilfield drilling, offshore platform deep well drilling and long-term fixed rig continuous operation scenarios. It stably operates under working pressure ranging from 0MPa to 35MPa and ambient temperature from -40°C to 60°C, suitable for high-frequency start-stop and alternating load working modes of pipe handler and top drive systems. All parts match Varco series drilling rig supporting standards and fully adapt to full-cycle industrial drilling operation requirements.

5. Professional Maintenance & Engineer Operation Guidelines

Field engineers are recommended to conduct weekly visual inspection of hydraulic seals and flange interfaces to check for oil seepage or pressure drift. Perform quarterly pressure holding tests on counterbalance cylinder assemblies to ensure zero pressure drop within 30 minutes under rated load. Replace gearbox lubricating oil and filter elements every 500 working hours to avoid impurity abrasion. For low-temperature electrical components, inspect cable joint tightness and heater kit operation status before winter operation. Avoid mixed installation of non-standard accessories, which may cause system pressure mismatch and signal disorder. Dismantle and replace aging piston seals and valve cartridges annually to restore hydraulic system volumetric efficiency.

We supply the following spare parts:

94681-12 BUND FLANGE KIT, CODE 61
111935 CLEVIS, ROD END, CYLINDER, COUNTERBALANCE
110687 CYLINDER. 4’ C’BAL
S-Pipe Package 30156835-X-X-X
Jumper Cable Kit 30157552-X
Shipping Package 30171423-PH50
Servce Loop Kit, Electrical 30175151-86-200
Rig Cabling Diagram 30175894
Control House 30178435-2A25CEHE
Puma/Motor Assembly 30178472
Motcr Housing, Low Temp 30179322-EX
Electric Package, Low Temp 30179323-A60R
Schematic. Electrical D804000429-DIA-001
Gearbox Lubrication Kit 92643-14
IBOP (External) Crank Assembly 98898
Hydraulic Schematic 109550
Upper IBOP 110103-500
Hydraulic Plumbing Package 110138-1
Cylinder Assembly 110703
Cylinder Assembly 110704
Counterbalance Package 112190-120
Wireline Running Adapter PH-50 114032
Manifold Assembly 114175-LT
Lower IBOP 114706-500
Pipe Handler Package 117820-35-NC50B
Torque Wrench Assembly 117821
Cylinder Assembly Clamp 117941
Spreader Beam Kit 117977-101
Drilling Motor Assembly 118217-35L60 -35R60
Counterbalance Attachment Kit 118244-X
Pipe Handler Kit 119054-NC50B
Bail Package 121442-88-X
Motor Guard Package 121740
Adapter Kit. PH-50 122747-X
Loop Assembly 126529-135-25-4-B
Grounding Rod Kit 30116004
Rotating Link Adapter Assembly 30118150-LT
Hydraulic Cylinder Assembly 30119592
Carriage Package 30124540
Termination Kit 30126815
Shot Pin Assembly 30151875-504
Tieback Kit 30154685-100
Guide Beam Kit 30154688-X
Varco Driller’s Guide 30155761-60-X
Service Loop Kit. Electrical 30175151-86-200
VDC Cable 30152011-200
Varco Driller’s Guide 30155761-60-X
Heater Kit VDC 30157670-200
108894-P40 Seal, Piston
94522-21N Relief Valve Cartridge

6. On-Site Field Maintenance Cases

Case 1: Heilongjiang Cold-Region Oilfield, Model 110704 Counterbalance Cylinder, 32MPa rated load. Fault: Hydraulic pressure drift, 4MPa pressure drop within 10 minutes. Repair: Replace 108894-P40 piston seal and calibrate relief valve pressure. Post-repair index: Zero pressure drop in 30-minute static pressure holding test. Customer feedback: Cylinder load stability fully restored, eliminating frequent equipment shutdowns.

Case 2: Bohai Offshore Drilling Platform, 117820-35-NC50B Pipe Handler Package, full-load pipe clamping operation. Fault: Pipe positioning offset 12mm, unstable clamping force. Repair: Replace aging cylinder clamp and recalibrate hydraulic loop pressure. Post-repair index: Positioning offset controlled within 2mm, clamping force reaches rated standard value. Customer feedback: Pipe handling accuracy meets drilling operation standards.

Case 3: Xinjiang Onshore Oilfield, 30179322-EX Low-Temp Motor Housing, -38°C operating environment. Fault: Motor housing micro-fracture, abnormal operating vibration. Repair: Replace dedicated low-temperature motor housing assembly. Post-repair index: Equipment starts normally at -40°C, vibration amplitude reduced to standard 0.06mm/s. Customer feedback: Solved winter low-temperature equipment failure thoroughly.

Case 4: Shandong Drilling Rig Site, 94522-21N Relief Valve Cartridge, 30MPa long-cycle operation. Fault: System overpressure protection failure, hydraulic pipeline jitter. Repair: Replace valve cartridge and clean hydraulic oil circuit impurities. Post-repair index: Overpressure protection response returns to 0.2s standard response speed. Customer feedback: Hydraulic system operates smoothly with no abnormal jitter.

7. Technical FAQ

8. Procurement Reference & Technical Value Summary

This standardized oilfield component suite passes API 7K and IEC authoritative certification testing, with unified dimensional tolerance and performance standards for all parts, supporting one-to-one replacement of original rig equipment. Relying on standardized production processes and strict factory performance verification, each batch of products maintains stable 7500-hour continuous operation capacity, effectively reducing field maintenance frequency and equipment operating failure rate. It provides accurate procurement selection standards and professional on-site fault resolution solutions for drilling equipment supporting maintenance and system upgrade. Users can select matching models and complete accessory packages according to rig model, working temperature and load demands to realize efficient and reliable equipment operation and maintenance.