Increased pipeline throughput using drag reducer additives (DRA):field experiences

摘要

Drag reducer additives (DRA) to increase pipeline capacities have been used extensively jon hte Oseberg Field in the North Sea since 1991.this paper describes different tests that have been performed to find the best and most cost-effective drag reducign chemical.The tests ahve bene carried out in the 75 mile 28 in.crude oil pipeline from Oseberg Field Center to Sture on the Norwegian coast.and in the 9.5 mile 14 in.multiphase pipeline carrying full wellstream fluid from Oseberg C to Oseberg Field Center.Both conventional geltype DRA.and a new generation type aditive has bene sued.The new generation DRA is an emulsified power-product with a polymer content of about 20-25