Atlantic Richfield Company

Kavin J Morris

Weldon H Barber

Jerry L Haley

A wellbore fluid sampling apparatus includes an elongated barrel member having a chamber formed by a through flow passage opening from the bottom of the barrel member to a port in the barrel member. Spaced apart ball type valve closure members are connected to an actuating linkage comprising a rack and pinion mechanism connected to respective ones of the closure members. A cocking and retaining mechanism includes an actuating rod and a collet sleeve connected to the rack member and biased by a coil spring to move the rack member to simultaneously close both valves upon release of the collet sleeve from gripping engagement with the wall of the bore in a body member of the apparatus. In an alternate embodiment, the actuating member includes a part gripped by a stationary collet which may release the part upon movement of a sliding sleeve which is actuatable at will. The actuating member is connected to elongated cable traces which are operable to move the valves between open and closed positions. The ball valves include lateral ports for evacuating the closure member passages in the valve closed positions.

Growing community of inventors

Plano, TX, United States of America

Kavin J Morris