A Unique Cost-Effective Technique for One-Trip Selective Gravel Packing Over Multiple Zones: Dacion Field Case Study

摘要

Selective gravel-pack completions of multiple zones present the oil industry with major challenges and expenses. Current practices have two key problems associated with them: they are limited to zones separated by 30 to 50 ft (depending on the treatment type) because of the length of the assemblies, and they have proven to have a higher risk of installation failure. This paper describes equipment and procedures for gravel packing multiple zones in a single completion with total zonal iso- lation for spacing as small as 5 ft. Zones can be produced sepa- rately or comingled. Risk of execution failure is significantly lower than with conventional stacked packs. Production data is presented that verifies complete zonal isolation, improved productivity, and reduced costs from this technique.