Improve footage and ROP in high-vibration, high-impact drilling applications.
Lithology: Hard limestone, 20,000–30,000 psi
Borehole: 8 1/2 in to 10 1/4 in
ROP: 60 ft/h
The Gould Research Center in Cambridge designed a full-scale test to compare underreaming operations of two Rhino systems. In this test, one would be equipped with conventional cutter blocks and the 1 other one fitted with StingBlock cutter blocks. The test assessed performance while enlarging an 8 1/2-in pilot hole to 10 1/4 in.