Treated zone targeted using DTS analysis
Schlumberger proposed a stimulation method that combined the ABRASIJET
service's high-pressure jetting tool with ACTive DTS Inversion analysis. This
downhole system configuration enabled the identification of initial and future
developed thief zones during the treatment, which allowed optimal placement of
the VDA viscoelastic diverting acid. DTS profiling was used posttreatment to
confirm placement of the VDA acid.
The interpretation of DTS along with FMI fullbore formation microimager
and other openhole log data assisted in the identification of
hydrocarbon-bearing damaged intervals. These intervals were then targeted by the
ABRASIJET service's high-pressure jetting tool to cut slots into the open hole,
bypass the filter cake, and place the acid in the rock.
Well production increased by more than 500 bbl/d
The posttreatment well production exceeded customer expectations and
increased production from 200 bbl/d to 700 bbl/d, which was maintained for more
than a year. The real-time measurements provided by the combination of the
ABRASIJET service and ACTive DTS Inversion analysis enabled the operator to
overcome the obstacles presented by conventional treatment and evaluation
techniques.
