Schlumberger Technology Corporation

Wellbore Integrity Solutions LLC

Mahesha Kumar

Charles H Dewey

Scott D McDonough

Shelton W Alsup

Venkatesh Karuppiah

A hybrid bit includes fixed blades and wheel support structures. The wheel support structure includes a wheel inserted into a slot between a leading support and a trailing support. One or more shims fill a gap between a flange and the leading supports. An elongated seal between the wheel and the supports is provided to seal the wheel support.

Hybrid bit

A milling tool includes a cutting block in a recess in a tool body. The cutting block is configured to extend radially outward from and retract radially inward toward the tool body. The milling tool further includes a milling blade in a recess or cut-out in the cutting block. The milling blade is configured to extend radially outward from and inwards toward the cutting block. One or more links may couple the milling blade to the tool body to cause the milling blade to move radially relative to the cutting block when the cutting block moves radially relative to the tool body. The milling tool may be used as a dual string section mill to remove any of an inner casing, an outer casing, or cement between the inner and outer casings.

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Cypress, TX, United States of America

Mahesha Kumar