Unbalanced Single-spiral Blade Stabilizer/Multi
The unbalanced spiral blade stabilizer,relying on its structural unbalanced principle,during rotating of drill string,produces a centrifugal force toward weighted side.One time natural coincidence for restoring force with eccentric force when drill tool turns a round.This would produce a large impact restoring force to straighten well-bore gradually.Therefore,both single-spiral blade stabilizer and multi-spiral blades stabilizer are ideal anti-inclination tool.