What is BS EN 1918-2 - Functional recommendations for storage in oil and gas fields about?
BS EN 1918-2 covers the functional recommendations for design, construction, testing, commissioning, operation, maintenance and abandonment of underground gas storage (UGS) facilities in oil and gas fields up to and including the wellhead.
BS EN 1918-2 specifies practices which are safe and environmentally acceptable.
In this context, "gas" is any hydrocarbon fuel:
- Which is in a gaseous state at a temperature of 15 °C and under a pressure of 0,1 MPa (this includes natural gas, compressed natural gas (CNG) and liquefied petroleum gas (LPG). The stored product is also named fluid
- Which meets specific quality requirements in order to maintain underground storage integrity, performance, environmental compatibility and fulfils contractual requirements.
BS EN 1918-2 specifies common basic principles for underground gas storage facilities.
Note 1: Users of BS EN 1918-2 should be aware that more detailed standards and/or codes of practice exist. A non-exhaustive list of relevant standards can be found in Annex A.
Note2: For necessary surface facilities for underground gas storage, EN 1918-5 applies.
Who is BS EN 1918-2 - Functional recommendations for storage in oil and gas fields for?
BS EN 1918-2 on Functional recommendations for storage in oil and gas fields is useful for:
- Petroleum and natural gas industry
- UGS plants
- Designers and constructor units of oil and gas fields
- Environmental safety agencies
- Disaster management departments
Why should you use BS EN 1918-2 - Functional recommendations for storage in oil and gas fields ?
The primary function of UGS is to ensure that supply is adjusted for peak and seasonal demand. Apart from this, the storage facilities can provide stand-by reserves in case of interruption of the planned supply. Increasingly UGS is applied for commercial storage services.
Thus, in summary underground gas storage facilities can be used for:
- Security of supply
- Providing flexibilities
- Balancing of seasonal demand variabilities
Storage of gas in oil and gas fields is a proven technology and is mainly used for the storage of large gas volumes. These UGS in pore storages (see Figure 2) are developed by building up a reservoir of compressed natural gas in the pores of a subsurface structure, which was originally hydrocarbon-bearing as in oil and gas fields.
BS EN 1918-2 provides guidance on design, construction, operation and maintenance of the facility to ensure safety and reliability.
Storage of gas in oil and gas fields in accordance with BS EN 1918-2 will help you ensure:
- Satisfactory containment of the gas-filled zone
- Prevent gas leakage at anticipated operating pressures
What’s changed since the last update?
BS EN 1918-2 supersedes EN 1918-2:1998. BS EN 1918-2 includes some technical changes with respect to EN 1918-2:1998. These include:
- More details on function and technology of underground storage, including figures
- Addition of activities and reviews related to safety
- Additional elements to take into account in well design
- Addition of HSE operation monitoring and maintenance chapter
- Addition of Abandonment chapter
