Ptpr Wellhead Valves PDF

Title	Ptpr Wellhead Valves
Course	Well Completions, Stimulations, and Workovers
Institution	Southern Alberta Institute of Technology
Pages	3
File Size	160 KB
File Type	PDF
Total Downloads	73
Total Views	123

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Summary

Ptpr Wellhead Valves...

Description

Wellhead Valves • • • •

Wellhead valves can be ball or gate Master valve Wing valve Crown valve – Or working or swab valve

Ball valve

Gate valve Wellhead gate valves are slab or wedge-type • Gate (& ball) valves are not chokes • Wedge-type gate - Seals in 1 direction – Additional torque to seal – Typically lower cost

Top section • •

Flow Tees and Crosses Needle valves and pressure gauges

Wellhead specifications Standards – API Specification 6A • American Petroleum Institute – ISO 10423:2009 • International Organization for Standardization

API Specification 6A PSL: Product Specification Level – Refers to level of testing and traceability through manufacturing process (1,2,3,3G) • PSL specified: Primary Components – Tubing head, tubing hanger, bonnet, and lower master valve • Material Specifications • Temperature Specification

Pressure Ratings – API 6 Wellheads classified by pressure rating • Standard API classes: – 2000 psig (13.8 MPag) – 3000 psig (20.7 MPag) – 5000 psig (34.5 MPag) – 10,000 psig (69.0 MPag) – 15,000 psig (103.5 MPag) – 20,000 psig (138.0 MPag)

Pressure Ratings – API 6 Rating is MAWP – Maximum Allowable Working Pressure • Defined by: – Bolt pattern – Bolt hole diameter – Nut & Bolt sizes – Ring Gasket...