1 Scope
This document describes general principles and gives requirements and recommendations
for the selection and qualification of metallic materials for service in equipment
used in oil and gas production and in natural-gas sweetening plants in H2S-containing environments, where the failure of such equipment can pose a risk to
the health and safety of the public and personnel or to the environment. It can be
applied to help to avoid costly corrosion damage to the equipment itself. It supplements,
but does not replace, the materials requirements given in the appropriate design codes,
standards, or regulations.
This document addresses all mechanisms of cracking that can be caused by H2S, including sulfide stress cracking, stress corrosion cracking, hydrogen-induced cracking and stepwise cracking, stress-oriented hydrogen-induced cracking, soft zone cracking, and galvanically induced hydrogen stress cracking.
Table 1 provides a non-exhaustive list of equipment to which this document is applicable,
including exclusions.
This document applies to the qualification and selection of materials for equipment
designed and constructed using load controlled design methods. For design utilizing
strain-based design methods, see Clause 5.
This document is not necessarily applicable to equipment used in refining or downstream
processes and equipment.
Table 1
—
List of equipment
| This document is applicable to materials used for the following equipment | Exclusions |
|---|---|
| Drilling, well construction, and well-servicing equipment |
Equipment exposed only to drilling fluids of controlled compositiona Drill bits
Blowout preventer (BOP) shear bladesb
Drilling riser systems
Work strings
Wireline and wireline equipmentc
Surface and intermediate casing
|
| Wells, including subsurface equipment, gas-lift equipment, wellheads, and christmas trees |
Sucker rod pumps and sucker rodsd Electric submersible pumps
Other artificial lift equipment
Slips
|
| Flowlines, gathering lines, field facilities, and field processing plants | Crude-oil storage and handling facilities operating at a total absolute pressure below 0,45 MPa (65 psi) |
| Water-handling equipment | Water-handling facilities operating at a total absolute pressure below 0,45 MPa (65
psi)
Water injection and water disposal equipment
|
| Natural-gas treatment plants | — |
| Transportation pipelines for liquids, gases, and multiphase fluids |
Lines handling gas prepared for general commercial and domestic use |
| For all equipment above | Components loaded only in compression |