Hughes Tool Company LLC

Mcmurry Oil Tools, Inc.

Mcmurry/hughes, Inc.

Bolling A Abercrombie

Everett D McMurry

Robert C West

Jack R Blann

A method and apparatus for monitoring corrosive effects of fluid in a well, for use with a well tubing mandrel having a main bore and a side pocket offset from the main bore. The mandrel also has a slot along the length of the side pocket adjacent the main bore, and the exterior surface of the mandrel is free of apertures. A corrosion coupon is mounted within a notch on the side of a carrier, and the carrier is placed into the side pocket for a specified time period. The carrier is oriented to position the coupon within the slot. The carrier is then removed from the well and the coupon is inspected.

Method and apparatus for monitoring well tubing fluid

An artificial lifting device has a downhole valve which intermittently directs operating gas to the top of a collection chamber to promote the lifting of oil below the valve upwardly through an annulus defined between a cylindrical housing supporting the valve and an external cylindrical member through which the housing extends. Gas is alternately injected to the top of the chamber through an injection port and vented to the surface through a vent port. An exhaust conduit, separate from the source of pressurized gas running from the surface to the valve, communicates the vent port with the surface when the device is in the vent mode.

Artificial lifting device and method

Production equipment for oil and gas wells has features that allow accumulated liquid to be removed from the well without the need for a low pressure system. This equipment also isolates the perforations from accumulated liquid back pressure, even if there is insufficient hole depth below the perforations. The well has a tubing string located inside the casing, with the tubing in contact with the accumulated liquid. Both the tubing and the casing are connected to the sales line. Periodically, both the casing and tubing are shut-in, allowing formation pressure to build up in the casing. Then the tubing is opened to the sales line to discharge its accumulated liquid, it being driven by the higher formation pressure that has built up. To isolate the perforations from accumulated liquid, a standpipe is mounted in the casing above the perforations by a packer. The standpipe receives the lower end of the tubing which is closed except for a passage connecting it to the annular area between the standpipe and the casing. Produced fluid flows up the standpipe in a restricted area adjacent the tubing. At the top of the standpipe, liquid droplets drop out and accumulate above the packer between the standpipe and the casing.

Surface controlled liquid removal method and system for gas producing

A gas lift valve is characterized by a valve element biased to the first, closed, position within a valve housing by an extension spring biasing element. In the closed position the valve element interdicts communication between an annular region disposed externally to a production tubing string and the interior of the tubing string. A bellows arrangement may be provided and may have a fluid therewithin able to be pressurized to a predetermined pressure level to assist the spring biasing element in biasing the valve to the closed position. The extension spring element is disposed witin the valve housing above the bellows element. The valve element is itself physically disconnected from, but abutted against a bellows sub element which transmits the closing force to the valve element when the valve element is in the closed position. The valve element moves to the second, open, position when a combination of the forces generated by the pressure of the fluid within the annular region acting over the area of the valve seat and the pressure of a fluid within the production tubing acting over the area of the bellows arrangement are sufficient to overcome the closing force of the spring biasing element. Since the valve element is physically disconnected from the bellows sub element, the valve element interdicts communication between the annular region disposed externally to the production tubing string and the interior of the production tubing if the pressure of the fluid in the production tubing exceeds the pressure of the fluid in the annular region, thus acting as a check valve.

Gas lift valve with a tension spring biasing element

A mandrel valve and gas lift valve mechanism that is adapted to be interconnected in a production tubing string within a well in order to produce fluid from the well under conventional gas lift methods. The gas lift valve includes a housing carried by a mandrel. The housing has a ball type valve element disposed in a valve chamber. Within the mandrel there is a linearly moving valve actuating sleeve having a cam which coacts with a stem on the ball valve so that linear movement of the sleeve causes rotation of the ball valve.

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Montgomery, TX, United States of America

Bolling A Abercrombie