Atlantic Richfield Company

Jerry L Haley

Dennis R Wood

Weldon H Barber

Kavin J Morris

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.

Wellbore fluid sampling apparatus

A mechanical indicator and arresting apparatus for use with downhole tools which are extendable through wellbore tubing strings by a wireline cable or the like. The indicator apparatus includes a body supporting an elongated actuating rod which is movable longitudinally by an actuator member associated with the tool to extend a plurality of arresting fingers which are pivotally mounted on the body member from a retracted position, which permits movement of the indicator through the tubing string, to an extended position for engaging a transverse surface on the tubing string to arrest movement of the indicator in at least one direction of movement through the tubing string. The actuating rod includes a latch member for holding the fingers in a retracted position and a spring biased plunger is engageable with the fingers to move the fingers to their extended position in response to movement of the actuating rod.

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Richardson, TX, United States of America

Jerry L Haley