Mobil Oil Corporation

Gordon A Russell

M Scott Quigley

Disclosed is a fluid actuated core sample holding device for use with a boring drill press, the holding device having rotatable vise jaws and flat support surfaces adjacent the respective jaws and containing removable holding pins. The rotatable jaws permit a greater versatility in the positioning of core samples held between them relative to the drill press, while the flat support surfaces and associated holding pins serve to hold flat or irregularly shaped core samples, not easily held by the jaws, for boring.

Device for holding formation cores for boring

Temperature control apparatus for a system for testing drilling mud includes instrumentation for measuring the parameters of the drilling mud, and a pump for pumping the drilling mud in a recirculating path through the instrumentation. A mud heater in the recirculating path heats the mud and a heat exchanger connected in the front of the heater in the recirculating path cools the mud before it is heated. The heater and the heat exchanger are controlled to maintain a constant differential across the heater. The heater is constructed in a manner which provides low thermal mass, thereby providing a fast response time for changes in temperature.

Growing community of inventors

Dallas, TX, United States of America

Gordon A Russell