Amoco Corporation

John W Kearns

Houston B Mount, Ii

Robert M Beirute

Eric L Bandurski

A user-friendly reverse circulation float equipment tool and process permit the application of reverse circulation cementing in shallow or deeper wells, without having to use an inner string. The reverse circulation float equipment tool can have: an upper section with a ball-activated upper valve, a lower section with a ball-activated lower valve, and an intermediate ball chamber between the upper and lower sections to contain the ball in a reverse mode. The reverse circulation float equipment tool and process allow circulation in the normal and reverse circulation modes while running the casing and during hole conditioning. After the reverse circulation job, the convenient reverse circulation float equipment tool and process allow closing of the bottom of the casing to prevent U-tubing of the cement slurry. This will also facilitate having the casing in radial compression during the time required to set the cement in the annulus, between the casing and wall of the well bore, to minimize the formation of a micro-annulus during cement curing.

Reverse circulation float equipment tool and process

A heating probe and collection assembly is provided for evaluating free hydrocarbons and hydrocarbon potential of whole core. In one embodiment, the one or more assemblies are used with a core transport system to provide measures of hydrocarbon potential as a function of depth.

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Tulsa, OK, United States of America

John W Kearns