JRI Fireside chat with Scott Macmillan Tues. Nov 28 @ 9:00 Perth/12:00 Sydney, page-228

Have you seen this tool used before ?

CHDT Cased Hole Dynamics Tester | SLB

The CHDT cased hole dynamics tester conducts multiple pressure measurements and collects fluid samples behind the casing in a well. In a single trip, the CHDT tester

drills through a casing and into the formation
performs multiple pressure measurements
recovers fluid samples
effectively plugs the hole made in the casing to restore pressure integrity.

In a single run, the CHDT tester can drill up to six holes (one per station) and at each station perform multiple pressure tests and acquire multiple high-quality fluid samples.