HOUSTON – Halliburton Co. has introduced the Xtreme Single-Trip Multizone (XSTMZ) system for completing wells in deepwater and ultra-deepwater conditions up to 15,000 psi (1,034 bar).
Based on its 10,000-psi (689-bar) rated Enhanced Single-Trip Multizone (ESTMZ) system, the increased pressure rating of the new system is said to allow operators to isolate and frac pack multiple zones at higher pump rates with larger proppant volumes.
It also supports the ability to create zonal compartments for better stimulation of long pay zones that have high-pressure differentials between them.
According to the company, the increased capability of the XSTMZ system helps increase production and total recovery by driving down abandonment pressure and can save rig time by isolating and treating several intervals with a single trip.
A major operator in the Gulf of Mexico Lower Tertiary has ordered the new system to complete multiple reservoirs that are experiencing very large bottomhole pressure differentials due to the depletion of some of the reservoirs. The operator plans to begin installing the equipment needed to complete two wells in 2020.