WELL DESIGN AND ASSOCIATED WELL STRUCTURES

摘要

There is described methods for well design, including well construction, associated well structures and well completion arrangements for use in a well. The method for designing a well may include providing a computational model of a well comprising a section of wellbore, surrounding formation, and a well completion arrangement positioned between the wellbore and surrounding formation. That well completion arrangement may define fluid paths between the surrounding formation and the wellbore, wherein the fluid paths provide an effective inflow area from the surrounding formation to the wellbore. The method may then comprise a. calculating fluid production from the surrounding formation, through the well completion arrangement, to the wellbore; and b. varying the effective inflow area of the well completion arrangement; and repeating steps a. and b. so as to determine a profile of well performance for that computational model of the well based on a range of effective inflow areas of the well completion arrangement, and determining a well design having a particular effective inflow area based on the determined profile.