Screenless Completions: Cost-Effective Sand Control in the Adriatic Sea

摘要

Many gas reservoirs in the central Adriatic Sea, offshore Italy, are formed of laminated, low-permeability, dirty sandstones, with as much as 50/100 clay content. Initially, wells were completed with gravel packs, but the nature of the formations caused productivity to decrease in some gas fields because fines plugged the gravel packs. In the past few years frac packs have been used to alleviate the fines migration problem. However, there are many gravel- packed wells which are either sanded up and shut in or underper- forming because fines have plugged the gravel-pack screens. These wells do not currently justify the expense of an immediate Full rig workover.