StingBlock Cutter Blocks Reduce Lateral Vibration | SLB
Tech Report
Location
United Kingdom, Europe, Onshore
Details

Lithology: Hard limestone, 20,000–30,000 psi

Borehole: 8 1/2 in to 10 1/4 in

ROP: 60 ft/h

Background

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.

Products Used

StingBlock Cutter Blocks Significantly Reduce Lateral Vibration with Less Weight on Reamer

Staged-gauge pad design and Stinger elements combine to enhance the efficiency of the Rhino system in hard and high-impact formations

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Results of the full-scale lab test simulated underreaming operations in a hard limestone formation. The parameters were controlled with an ROP of 60 ft/h and 160 rpm. The measured results showed that the StingBlock cutter block reduced lateral vibration levels by 94% while requiring 24% less weight on the reamer, indicating overall improved drilling efficiency.
Products Used

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