Historical
ISO 15156-1:2001
Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 1: General principles for selection of cracking-resistant materials
This part of ISO 15156 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 could 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 material requirements given in the appropriate design codes, standards or regulations.
This part of ISO 15156 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 hydrogeninduced cracking, soft zone cracking and galvanically induced hydrogen stress cracking.
Table 1 provides a non-exhaustive list of equipment to which this part of ISO 15156 is applicable, including permitted exclusions.
This part of ISO 15156 applies to the qualification and selection of materials for equipment designed and constructed using conventional elastic design criteria.
This part of ISO 15156 is not necessarily applicable to equipment used in refining or downstream processes and equipment.
| Table 1 - List of equipment | |
|---|---|
| ISO 15156-1 is applicable to materials used for the following equipment | Permitted exclusions |
| Drilling, well construction and well servicing equipment | Equipment only exposed to drilling fluids of controlled compositiona |
| Drill bits Blowout preventer (BOP) shear bladesb | |
| Drilling riser systems | |
| Work strings | |
| Wire line and wire line equipmentc | |
| Surface and intermediate casing | |
| Wells, including subsurface equipment, gas lift equipment, wellheads and christmas trees | Sucker rod pumps and sucker rodsd |
| Electrical submersible pumps | |
| Other artificial lift equipment | |
| Slips | |
| Flowlines, gathering lines, field facilities and field processing plants | Crude oil storage and handling facilities operating at gauge pressure below 4,3 bar 65 psi |
| Sour-water handling equipment | |
| Natural gas treatment plants | |
| Transportation pipelines for liquids, gases and multiphase fluids | Lines handling gas prepared for domestic use |
| a Given the high strength often needed, drilling equipment may not comply with the requirements of this part of ISO 15156. In such cases the primary means for avoiding SSC is control of the drilling or well-servicing environment. As service stresses and material hardness increase, drilling fluid control becomes increasingly important. Take care to control the drilling environment by maintenance of drilling fluid hydrostatic head and fluid density to minimize formation fluid in-flow and by one or more of the following procedures: 1) maintenance of pH 10 or higher to neutralize H2S in the drilled formation; 2) use of chemical sulfide scavengers; 3) use of a drilling fluid in which oil is the continuous phase. | |
| b High strength steels used for blowout preventer (BOP) shear blades are highly susceptible to SSC. | |
| c Wireline lubricators and lubricator connecting devices shall comply. | |
| d NACE MR 0176 applies to sucker rod pumps and sucker rods. | |
Content Provider
International Organization for Standardization [iso]
