Extended-Reach stimulation with coiled tubing:a case study

摘要

The numb4er of extended-reach horizontal wells is increasing as operators seek to maximize well production.As the length of the horizontal section increases,so does the challenge of openhole stimulation.The full-length paper reviews stages fo planning,design/modeling,and operations required to stimulate a deep openhole horizontal re-entry well with coiled tubing (CT).The well was completed to a depth of 21,670 ft with end fo tubing at 18,308 ft.The 3,363-ft openhole section was drilled wtih a 5~7/8-in.bit A l~3/4-in.tapered CT string was designed to reach total depth (TD)unassisted by any extended-reach bottomhole assembly (BHA).