Overview
SIST EN ISO 15136-2:2007 specifies the international requirements for the design, manufacturing, validation, quality control, and repair of progressing cavity pump (PCP) surface-drive systems used in artificial lift applications within the petroleum and natural gas industries. Surface-drive systems are vital for transmitting power from surface equipment to downhole progressing cavity pumps, enhancing production efficiency in oil and gas wells. This standard sets out clear guidelines for ensuring product reliability, safety, and suitability for a range of operational and environmental conditions.
Key Topics
- Design and Validation: The standard outlines processes for design verification and validation activities, such as design reviews, calculations, empirical testing, and documentation practices. Functional testing must confirm that each system meets specified performance and safety requirements.
- Manufacturing and Data Control: Suppliers must maintain documented processes for each stage of production, including material selection (for both metallic and non-metallic parts), performance ratings, and product identification.
- Performance Ratings: Systems are evaluated on key parameters, including axial load capacity, torque, speed and temperature ranges, brake system characteristics, thrust-bearing ratings, and input power limits.
- Quality Control Documentation: EN ISO 15136-2 provides for two levels of quality documentation (Q1 for enhanced requirements and Q2 as a standard option), allowing purchasers to select the grade appropriate for their application.
- Environmental Compatibility: The standard emphasizes compatibility with various environmental conditions such as temperature extremes, humidity, dust, salt spray, and hazardous locations.
- Repair and Maintenance: Guidelines are provided for the repair, testing, and reassembly of surface-drive systems to ensure continued performance and safety compliance.
- Informative Annexes: Additional guidance is included on topics such as brake system selection, installation, operation, and guidance on sucker rod selection and use.
Applications
SIST EN ISO 15136-2:2007 is applied by:
- Equipment Manufacturers: Ensuring new surface-drive systems for PCPs conform to established safety, design, and operational standards.
- Petroleum and Gas Operators: Selecting and deploying surface-drive systems suited to well conditions and production requirements, with clear expectations for performance and maintenance.
- Quality Assurance Teams: Using standard quality documentation grades (Q1 or Q2) to validate equipment integrity and traceability.
- Procurement and Engineering Staff: Specifying requirements during tendering, designing for compatibility with wellheads, drive strings, sucker rods, and other relevant production equipment.
- Service Providers: Maintaining and repairing existing PCP surface-drive systems while meeting standardized criteria for safety and reliability.
Typical scenarios include onshore and offshore oil production operations where artificial lift systems are needed to enhance hydrocarbon recovery in wells with declining pressure or flow rates.
Related Standards
Users of SIST EN ISO 15136-2:2007 may also need to reference the following standards for comprehensive artificial lift system deployment:
- ISO 15136-1: Progressing cavity pump systems for artificial lift - Part 1: Pumps
- ISO 9000: Quality management systems - Fundamentals and vocabulary
- ISO 15156 (all parts): Materials for use in H₂S-containing environments in oil and gas production
- ISO 2859 (all parts): Sampling procedures for inspection by attributes
- ISO 3601: Fluid power systems - O-rings (parts 1 and 3)
- ISO 9712: Non-destructive testing - Qualification and certification of personnel
- ASTM and MIL standards: Mechanical and materials testing as referenced within the standard
By following SIST EN ISO 15136-2:2007, organizations in the petroleum and natural gas industry can ensure that progressing cavity pump surface-drive systems are engineered and maintained to deliver safe, reliable, and efficient artificial lift solutions in challenging operating environments.