To complete a well and put it on producing status.

Basic sediment, or basic sediment and water.

To use a mill to remove the outside area of a permanent downhole tool.

The fibrous, flaky, or granular material added to a cement slurry or drilling fluid to aid in sealing formations in which lost circulation has occurred.

See lost circulation, lost circulation material.

A training procedure to determine that rig crews are completely familiar with correct operating practices to be followed in the use of blowout prevention equipment.

A “dry run” of blowout preventative action.

A mobile submersible drilling structure constructed of several steel cylinders, or bottles.

When the bottles are flooded, the rig submerges and rests on bottom; when water is removed from the bottles, the rig floats.

The latest designs of this type of rig drill in water depths up to 100 feet (30.5 meters).

See submersible drilling rig.

The female section of a connection.

See tool joint.

A device that stores hydraulic fluid under pressure in special containers and provides a method to open and close the blowout preventers quickly and reliably.

Usually, compressed air and hydraulic pressure provide the opening and closing force in the unit.

See blowout preventer.

1.

A tubular device placed in a vertical position, either inside or outside a larger vessel, and through which well fluids are conducted before they enter the larger vessel.

A boot aids in the separation of gas from wet oil.

2.

A large pipe connected to a process tank to provide a statis head that can absorb surges of fluid from the process tank.

1.

An uncontrolled flow of gas, oil, or other well fluids into the atmosphere or into an underground formation.

A blowout, or gusher, can occur when formation pressure exceeds the pressure applied to it by the column of drilling fluid.

2.

An uncontrolled flow of reservoir fluids into the wellbore, and sometimes catastrophically to the surface.

A blowout may consist of salt water, oil, gas or a mixture of these.

Blowouts occur in all types of exploration and production operations, not just during drilling operations.

If reservoir fluids flow into another formation and do not flow to the surface, the result is called an underground blowout.

If the well experiencing a blowout has significant openhole intervals, it is possible that the well will bridge over (or seal itself with rock fragments from collapsing formations) downhole and intervention efforts will be averted.

A type of mobile offshore drilling unit that has a part of its structure in contact with the seafloor when it is on site and drilling a well.

The remainder of the rig is supported above the water.

The rig can float, however, allowing it to be moved from one drill site to another.

Bottom-supported units include submersible rigs and jackup rigs.

See mobile offshore drilling unit.

1.

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

2.

To unscrew drillstring components, which are coupled by various threadforms known as connections, including tool joints and other threaded connections.

A device to measure bottomhole pressure.

See bottomhole pressure bomb.

A thick-walled container, usually steel, used to hold devices that determine and record pressure or temperature in a wellbore.

See bottomhole pressure.

To make up or fake a report without actually doing the work.