Product Introduction
This curated parts lineup covers all critical wear and functional components for PDVSA drilling rigs, including BOMCO mud pump valve assemblies, pistons, liners, and shear pins; SOUTHWEST 5-1/2” dual durometer pistons and Grayloy liners; GARDNER-DENVER PAJAH model pump valve seats; VARCO BJ rotary slips and inserts; API 9A-certified wire rope, and galvanized steel wire rope thimbles. Every part is matched to original OEM part numbers and SAP codes (862728, 519183, 380382, etc.) for seamless inventory tracking and cross-referencing, manufactured using high-grade alloy steel, wear-resistant elastomers, and IPS-grade steel to meet PDVSA’s rigorous quality requirements.
Functional Specifications
- Mud Pump Fluid End Parts: BOMCO/SOUTHWEST valves, pistons, and liners handle high-pressure drilling fluid (up to 7,500 PSI) with zero leakage, supporting continuous mud circulation and preventing pump cavitation.
- Lifting & Rigging Components: API 9A-certified 6×19 steel wire rope (1-1/2” and 1-1/8” diameters) offers a minimum breaking strength of 51,246 kg, paired with FF-T-276B compliant galvanized thimbles for secure load handling.
- Rotary Drilling Parts: VARCO BJ rotary slips and Weatherford inserts provide 3-1/2” to 5” pipe gripping capacity, ensuring stable pipe handling during drilling and tripping operations.
- Protective & Safety Parts: Shear pins, relief valves, and wearing plates prevent pump overpressure and mechanical damage, acting as critical safety failsafes for PDVSA rig systems.
Structural & Material Advantages
- High-grade Grayloy and hardened steel liners/pistons resist abrasion from drilling cuttings, extending service life by 35% compared to generic aftermarket parts.
- Dual-durometer elastomer piston seals maintain flexibility across temperature extremes (32°F to 180°F), eliminating fluid leaks under high-pressure cycling.
- Hot-dip galvanized steel thimbles and IPS wire rope resist corrosion in coastal/humid PDVSA oilfield environments, complying with marine and land rig durability standards.
- Precision CNC-machined valve guides and seats ensure perfect alignment, reducing pump vibration and extending the life of rotating mud pump components.
Applicable Operating Conditions
These spare parts are optimized for PDVSA onshore oilfield drilling rigs and offshore shallow-water rigs, performing reliably in high-dust, high-humidity, and corrosive coastal environments. Designed for continuous 24/7 drilling operations, they comply with API 9A, PDVSA internal equipment standards, and FF-T-276B rigging requirements, suitable for mud pump maintenance, drill pipe handling, substructure lifting, and mast assembly operations across all PDVSA drilling sites.
Maintenance & Care Recommendations
- Inspect mud pump valves, pistons, and liners every 150 operating hours for wear, scoring, or elastomer damage; replace worn components to avoid pressure loss.
- Lubricate valve springs and rotary slip mechanisms with API-approved drilling lubricant to reduce friction and prevent seizing under heavy loads.
- Store wire rope in a dry, covered area and apply corrosion-resistant oil quarterly; avoid kinking or overloading to maintain breaking strength integrity.
- Torque shear pins and cylinder covers to OEM-specified values to ensure proper safety failsafe functionality during overpressure events.
- Inspect galvanized thimbles for rust or deformation before each lift, replacing damaged hardware to comply with PDVSA rigging safety protocols.
We supply the following spare parts:
| SAP code | Description | Unit |
| 862728 | BOMCO, DESCRIPCION VALVE ASSY, PART NUMBER: AH0000020300. | PZA |
| 519183 | SOUTHWEST, DESCRIPCION 5-1/2IN DUAL DURO PISTON, PART NUMBER: 83BDD. | PZA |
| 862722 | BOMCO, DESCRIPCION PISTON, PART NUMBER: T504-012.00. | PZA |
| 519177 | SOUTHWEST, DESCRIPCION 5-1/2IN GRAYLOY LINER EMSCO FB, PART NUMBER: 6390G3. | PZA |
| 862720 | BOMCO, DESCRIPCION LINER, PART NUMBER: AH000003033600. | PZA |
| 862724 | BOMCO, DESCRIPCION PISTON ROD, PART NUMBER: AH1301020504. | PZA |
| 862749 | BOMCO, DESCRIPCION WEARING PLATE, PART NUMBER: AH1301020503. | PZA |
| 862730 | BOMCO, DESCRIPCION VALVE SPRING, PART NUMBER: AH00000101. | PZA |
| 862754 | BOMCO, DESCRIPCION LOWER VALVE GUIDE, PART NUMBER: AH130101050500. | PZA |
| 878560 | BOMCO, DESCRIPCION CYLINDER COVER, PART NUMBER: AH1301010503. | PZA |
| 862741 | BOMCO, DESCRIPCION SHEAR PIN, PART NUMBER: AH0000060111. | PZA |
| 886379 | BOMCO, DESCRIPCION RELIEF VALVE, PART NUMBER: AH0000060400, No. DE REFERENCIA/ITEM JA-3. | PZA |
| 862735 | BOMCO, DESCRIPCION PISTON ASSY, PART NUMBER: AH000006010300. | PZA |
| 862734 | BOMCO, DESCRIPCION DESURGER, PART NUMBER: AH0000050101. | PZA |
| 802446 | SOUTHWEST, DESCRIPCION CABEZAL SACA ASIENTO, PART NUMBER: SWTM-4250. | PZA |
| 380382 | GARDNER-DENVER, DESCRIPCION VALVE SEAT, PART NUMBER: PJ451. – Usado por:BOMBA, FABRICANTE/MARCA GARDNER DENVER, MODELO PAHAJ, SERIAL (1) 685265. | PZA |
| 861446 | GARDNER-DENVER, DESCRIPCION WASHER VALVE FLUID ASSEMBLY, PART NUMBER: PJ279. | PZA |
| 817808 | GARDNER-DENVER, DESCRIPCION SLUSH PISTON, PART NUMBER: 239TBB045A, No. DE REFERENCIA/ITEM 4-1/2 IN. | PZA |
| 884909 | BOMCO, DESCRIPCION GUAYA IZAMIENTO SUBESTRUCTURA, PART NUMBER: DZ 710314-200100. | PZA |
| 884900 | BOMCO, DESCRIPCION GUAYA IZAMIENTO DE CABRIA, PART NUMBER: JJ 846401-280100. | PZA |
| 383935 | WIRE ROPE, CLASSIFICATION 6X19, MATERIAL STEEL IPS, NOMINAL DIAMETER 1-1/2 in, WOUND TYPE REGULAR RIGHT TWISTED, CORE MATERIAL STEEL. | FT |
| 306957 | THIMBLE FOR WIRE ROPE, MATERIAL MILD STEEL, WIRE ROPE DIAMETER 3/8 IN, MAXIUM WORKING LOAD 1 T, COATING GALVANIZADO. | PZA |
| 664838 | THIMBLE FOR WIRE ROPE, MATERIAL STEEL, WIRE ROPE DIAMETER 5/8 IN, WIDTH2,38 IN, TOTAL LENGTH 3,50 IN, WALL THICKNESS 0,13 IN, WORKING CONDITIONS CARGAS LIVIANAS, MANUFACTURING STANDARD FF-T-276B TYPE II, COATING GALVANIZADO. | PZA |
| 664811 | THIMBLE FOR WIRE ROPE, MATERIAL STEEL, WIRE ROPE DIAMETER 1/2 IN, WIDTH1,75 IN, TOTAL LENGTH 2,75 IN, WALL THICKNESS 0,08 IN, WORKING CONDITIONS CARGAS LIVIANAS, MANUFACTURING STANDARD FF-T-276B TYPE II, COATING GALVANIZADO. | PZA |
| 306692 | WIRE ROPE, CLASSIFICATION 6X19, MATERIAL STEEL IPS, STRAND TYPE S, USE ROTATIVE DRILL LINE, NOMINAL DIAMETER 1-1/8 IN, MANUFACTURING STANDARD API 9A, WOUND TYPE REGULAR RIGHT TWISTED, BREAKING STRENGTH 51246 kg, OILING COMPOUND NOT CORROSIVE, WAY OF DELIVERY REEL OF 1066.8 M. | M |
| 455990 | VARCO BJ OIL TOOLS, DESCRIPTION ROTARY SLIP COMPLETE, PART NUMBER 15522,REFERENCE/ITEM NO. 3-1/2 IN, DRAWING NO. MODEL EQUIPO:SDML. | PZA |
| 938378 | VARCO BJ OIL TOOLS, DESCRIPTION CUÑA SDXL DE MANO, PART NUMBER 15518, REFERENCE/ITEM NO. DE MANO TUBERIA 5IN. | PZA |
| 818930 | VARCO BJ OIL TOOLS, DESCRIPTION SLIP CIRCULAR BUTTON, PART NUMBER 2630-216. | PZA |
| 818930 | VARCO BJ OIL TOOLS, DESCRIPTION SLIP CIRCULAR BUTTON, PART NUMBER 2630-216. | PZA |
| 882470 | WEATHERFORD, DESCRIPTION INSERTS 3-1/2 FULL CIRCLE, PART NO. 65652-3. | PZA |
| 882470 | WEATHERFORD, DESCRIPTION INSERTS 3-1/2 FULL CIRCLE, PART NO. 65652-3. | PZA |
Field Failure Repair Case Studies
Case 1: BOMCO Mud Pump Valve Assembly Failure
A PDVSA onshore rig experienced severe mud pressure loss due to a worn BOMCO valve assembly (SAP 862728). Replacing the faulty unit with an OEM-grade AH0000020300 valve assembly restored full pump pressure, resuming drilling operations in 2.5 hours and avoiding a full-day shutdown.
Case 2: SOUTHWEST 5-1/2” Piston Wear
Drilling fluid leakage from a degraded SOUTHWEST dual duro piston halted mud circulation. Installing a new 83BDD piston eliminated leaks, with the dual-durometer design preventing premature wear from abrasive drilling fluids during long-haul operations.
Case 3: VARCO Rotary Slip Insert Failure
A worn 3-1/2” VARCO slip insert caused unstable pipe gripping during tripping. Fitting replacement Weatherford 65652-3 full-circle inserts restored secure pipe handling, complying with PDVSA safety standards and preventing pipe drop risks.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with all PDVSA BOMCO mud pumps? | Yes, all BOMCO parts match OEM part numbers and dimensional specs for standard PDVSA mud pumps, with drop-in fitment requiring no modifications. |
| Does the wire rope meet API 9A standards for PDVSA rigs? | Absolutely, the 6×19 IPS steel wire rope is fully API 9A certified, with a verified breaking strength of 51,246 kg for safe drilling lifting operations. |
| Can these parts be used for both emergency repairs and scheduled maintenance? | Yes, these OEM-grade parts are designed for urgent field breakdown fixes and routine preventive maintenance, making them ideal for PDVSA rig inventory planning. |
Procurement Guidance & Closing Call to Action
This PDVSA drilling rig spare parts list serves as both a formal procurement reference standard for inventory stocking and a technical solution guide for diagnosing and resolving rig mechanical failures. Backed by strict quality testing, compliance with API and PDVSA operational standards, and direct OEM part number matching, these components deliver consistent performance, reduce long-term maintenance costs, and mitigate the risk of costly drilling downtime for PDVSA operations.
