ABERDEEN, UK – DNV GL has updated a recommended practice to include new guidance on the development, implementation, and follow-up of a high-level sand management strategy.
The recommended practice (DNV GL RP-0501) describes a safe and cost-effective approach to sand management and handling the consequences of sand production from oil and gas reservoirs through production wells, flowlines, and processing facilities.
Lars Even Torbergsen, senior principal specialist in DNV GL – Oil & Gas, says: “Sand production is a major issue for the industry. Typical failures include erosion, sand accumulation, plugging, and contamination…
“Statoil’s Gullfaks development applied the sand management RP’s principles a few years ago. Due to potential sand production, about 50% of the Gullfaks wells had to be choked back. The new sand management strategy reduced this by about 50%, adding a significant amount to the revenue stream. With an oil price of about $50/bbl, this is equivalent to around £175 million [$269 million] per year. The knowledge we obtained from this work is encapsulated in the updated RP.”
First issued in 1996, the updated RP also provides more background material for erosion response models. The RP includes the following main updates:
• An outline and list of considerations for a sand management strategy
• New guidance on the erosion model for flexible pipes with interlock carcass
• New erosion models for choke valves
• Erosion model validation cases
• Guidance on computational fluid dynamics erosion modeling.
The RP was initially developed as a result of a joint industry project involving DNV GL, Amoco Norway Oil Co., Conoco Norway Inc., Norsk Hydro AS, Saga Petroleum AS, and Statoil. The 2015 update reflects the collaboration between DNV GL and Statoil on the development of sand management strategies for the operator’s North Sea activities.
To download the RP click here.
At Offshore Europe, DNV GL is exhibiting at stand 5B51.