Holefinder Saves $4.0MM Per Well
An operator in Azerbaijan had been unable to complete wireline logging on multiple wells due to toolstring holdup on ledges at shale-sand interfaces.
Consequently the operator had been forced to acquire sub-surface data with LWD after drilling. Each post-drilling LWD pass took 6 days at a cost of $4.0MM per well. This method was used in place of wireline logging on 80% of the wells drilled.
Eager to reduce costs, the operator engaged Petromac to provide a holefinder system in order to navigate over ledges, washouts and borehole breakout.
The operator achieved a 100% success rate on the remaining well campaign, logging 5 wells with multiple toolstrings and avoiding the costly LWD passes.

Without a holefinder, wireline toolstrings are easily held up by ledges and washouts.

Using the Wireline Express holefinder, the toolstring does not loose any momentum as it slides over wellbore obstructions.
CHALLENGE
Ledges are the primary cause of toolstring holdup and will persistently holdup toolstrings, even on TLC operations.
SOLUTION
Petromac Tool Taxis ensure that the angled holefinder is always oriented upwards, allowing the toolstring to slide seamlessly over ledges.
RESULTS
The operator was able to avoid the costly LWD passes and extra rig time by shifting the data acquisition program to wireline.
