Jeff Harris, BJ Services Co., Kelvin Fisher, Endeavor Energy Resources
A CASE HISTORY OF A SUCCESSFUL COILED TUBING CLEANOUT OF A DEEP HIGH PRESSURE GAS WELL
Loving County, Texas has seen increased activity with current gas prices. Wells are drilled to depths of more than 18,000 feet. Reservoir pressures are as high as 16,000 psi with bottomhole temperatures up to 260_ F. Production has ranged 250 MCFD to 30 MMCFD. Multiple stage Frac jobs, usually 4 or 5 stages, is typically utilized. Each zone is perforated and stimulated using composite bridge plugs (CBP) to isolate each zone. After the all the zones of interest are fractured, high pressure coiled tubing is used to clean out bauxite and mill up the CBPs. This paper will explore how a unique process was used to successfully remove bauxite with 1.75" (OD) HP Coiled Tubing inside of 15,554" of 6.56" (ID) casing. Challenges included fluid selection, annular velocities and limited flow rates through the coiled tubing. The design and execution of this process will be discussed.