Oil & Gas Glossary 1.0

To pull the bottom end of a sucker rod away from a well when laying rods down.

Sucker rods that have been broken and separated in a pumping well because of corrosion, improper loading, damaged rods, and so forth.

To suspend sucker rods in a derrick or mast on rod hangers rather than horizontally on a rack.

A device closed around the rods when the well may flow through the tubing while the rods are being pulled. It is a form of blowout preventer.

Any short truck.

2. the vertical chimney-like installation that is the waste disposal system for unwanted vapor such as flue gases or tail-gas streams.

A sucker rod string, that is, the entire length of sucker rods, which usually consist of several single rods screwed together. The rod string serves as a mechanical link from the beam pumping unit on the surface to the sucker rod pump near the bottom of the well.

To pull rods and tubing from a well at the same time. Tubing must be "stripped" over the rods a joint at a time.

2. a pipe used to exhaust gases from the muffler of an engine to the outside atmosphere.

A sub with a telescoping joint used in dual or triple completions for running additional tail pipe.

1. a pipe run in a well blow a packer.

A small platform with finger-like steel projections attached to the side of the mast on a well servicing unit. When a string of sucker rods or tubing is pulled from a well, the top end of the rods or tubing is placed (racked) between the steel projections and held in a vertical position in the mast.

A special steel pumping rod. Several rods screwed together make up the mechanical link from the beam pumping unit on the surface to the sucker rod pump at the bottom of a well. Sucker rods are threaded on each end and manufactured to dimension standards and metal specifications set by the petroleum industry. Lengths are 25 or 30 feet (7.6 or 9.1 meters); diameter varies from 1/2 to 1-1/8 inches (12 to 30 millimeters). There is also a continuous sucker rod (tradename: Corod).

A well-servicing unit whose mast consists of two steel tubes. Double-pole masts provide racking platforms for handling rods and tubing in stands and extend from 65 to 67 feet (20 meters) so that rods can be suspended as 50-foot (15 meter) doubles and tubing set back as 30-foot (9-meter) singles. See pole mast.

A device used to pull or to run sucker rods.

A well using a pumping unit and rods to lift fluid.

A device used to hang sucker rods on the mast or in the derrick

A fishing tool used to recover a pared string of sucker rods from a well.

To loosen a tight joint as in line pipe or sucker rods.

To lower the drill stem, tubing, casing, or sucker rods in to the wellbore.

All the devices used to accomplish the moving of sucker rods form the elevators to the racking platform.

The driller or head well puller in charge of operations on a well servicing rig that is used to pull sucker rods or tubing

Equipment operated hydraulically or by compressed air for making up and breaking out drill pipe, casing, tubing, and rods.

A well-servicing outfit used in pulling rods and tubing from the well. See production rig.

Tongs that are actuated by air or hydraulic fluid and are used for making up or breaking out sucker rods

Drill pipe, tubing, sucker rods, and so forth with the diameter near the top of the well larger than the diameter below.

The maintenance work performed on an oil or gas well to improve or maintain the production from a formation already producing. It usually involves repairs to the pump, rods, gas lift valves, tubing, packers, and so forth

To have too long a length of rods between the pumping unit and the pump seat so that the pump hits bottom on the down stroke.

Clamps that grip a stand of casing, tubing, drill pipe, or sucker rods so that the stand can be raised or lowered into the hole.

To install a pump or pumping unit, sucker rods, and bottom-hole pump.

The topmost portion of a string of sucker rods. It is used for lifting fluid by the rod-pumping method. It has a uniform diameter and is smoothly polished to seal pressure effectively in the stuffing box attached to the top of the well.

1. a sucker rod, shorter than usual, used to make up a sucker rod string of desired length. Pony rods are usually placed just below the polished rod.

A small attachment on the rod-transfer equipment that picks up the rods after they are unscrewed from the string and then transfers them to the rod hanger, or reverses the procedure when going into the hole. See rod-transfer equipment.

A fishing tool that is attached to tubing or drill pipe and lowered over the outside wall of pipe or sucker rods lost or stuck in the wellbore. A friction device in the overshot, usually either a basket or as spiral grapple, firmly grips the pipe, allowing the fish to be pulled from the hole.

Intentional deviation of a wellbore from the vertical. Although wellbores are normally drilled vertically, it is sometimes necessary or advantageous to drill at an angle from the vertical. Controlled directional drilling makes is possible to reach subsurface areas laterally remote from the point where the bit enters the earth. It often involves the use of turbodrills, Dyna-Drills, whipstocks, or other deflecting rods.

A surface unit similar to a pumping unit but having no individual power plant. Usually, several pump jacks are operated by pull rods or cables from one central power source. Commonly, but erroneously, beam pumping units are called pump jacks. Compare beam pumping unit.

A large, hook-shaped device from which the swivel is suspended. It is designed to carry maximum loads ranging from 100 to 650 tons (90 to 590 tonnes) and turns on bearings in its supporting housing. A strong spring within the assembly cushions the weight of a stand (90 feet, about 27 meters) of drill pipe, thus permitting the pipe to be made up and broken out with less damage to the tool join threads. Smaller hooks without the spring are used for handling tubing and sucker rods. See stand and swivel.

1. a curved steel rod on top of the swivel that resembles the handle, or bail, of an ordinary bucket, but is much larger. Just as an ordinary bucket is hung from a hook by its bail, the swivel is hung from the traveling block's hook by its bail. Sometimes, the two steel rods (the links) that attach the elevator to the hook are also called bails.