The Ormen Lange field is located 120 kilometers off the coast of Møre og Romsdal (see map). Norsk Hydro is the development operator, while Shell will take over as operator during the operation phase.
In addition, Shell is responsible for implementing the drilling activity on behalf of Hydro.
The audit focused on the following areas:
Background for the audit
According to the award letter from the Norwegian Ministry of Labour and Social Affairs, the Petroleum Safety Authority Norway (PSA) shall:
This audit is one of several audits aimed at various operators in the field of well design. The audits have had different focus areas. This audit is different from the others since it was conducted prior to the drilling operation.
The Ormen Lange wells are the first gas producers on the Norwegian shelf with 9-5/8 " production flowlines, so-called "big bore" wells. Shell has carried out comprehensive studies of well design with associated barriers. Large production volumes require the qualification and use of new technology.
Purpose of the audit
The purpose of the audit was to make sure that Shell has safeguarded the regulatory requirements for design of well barriers, monitoring and testing of these as well as use of new technology and qualification of such technology in a planning phase, cf. the Facilities Regulations, Section 47 on well barriers and Section 8 on qualification and use of new technology and new methods, as well as the Activities Regulations, Section 44 on maintenance.
Result of the audit
Our general impression is that Shell strives to meet the regulatory requirements and internal requirements related to well design, barriers and qualification of new technology.
During the project period, comprehensive studies and qualification of equipment have been carried out to ensure proper adaptation to the conditions required by the Ormen Lange field in order to achieve a good, safe drilling operation and optimal production.
The planning process has been clearly documented, which has been useful to us in the implementation of this audit.
The audit has not revealed nonconformities in relation to regulatory requirements or Shell's internal requirements for the design planning.
Contact in the PSA: