A wellbore drilled in excess of the maximum allowable dogleg.

1.

The application of a liquid slurry of cement and water to various points inside or outside the casing.

2.

To prepare and pump cement into place in a wellbore.

Cementing operations may be undertaken to seal the annulus after a casing string has been run, to seal a lost circulation zone, to set a plug in an existing well from which to push off with directional tools or to plug a well so that it may be abandoned.

Before cementing operations commence, engineers determine the volume of cement (commonly with the help of a caliper log) to be placed in the wellbore and the physical properties of both the slurry and the set cement needed, including density and viscosity.

A cementing crew uses special mixers and pumps to displace drilling fluids and place cement in the wellbore.

see primary cementing, secondary cementing.

The thickness of drilling mud filter cake

A length of pipe used to increase.

An interconnected pathway through the matrix of the rock or an open fracture or other feature that connects a reservoir and the wellbore.

Abbreviation: cubic centimeter

To obtain cuttings for geological information as formations are penetrated by the bit.

The samples are obtained from drilling fluid as it emerges from the wellbore or, in cable-tool drilling, from the bailer.

Cuttings are carefully washed until they are free of foreign matter, dried, and labeled to indicate the depth at which they were obtained.

The set of pulleys or sheaves at the top of the mast on a rig.

See concurrent method

A logging device used to determine accurately the depth of a well; the log measures and records the depth of each casing collar, or coupling, in a well.

Since the length of each joint of casing is written down, along with the number of joints of casing that were put into the well, knowing the number and depth of the collars allows an accurate measure of well depth

A plan or routine for solving a problem on a computer.

A short subassembly used to enable two components with different thread types or sizes to be connected.

abbr.

Xo.

(slang) commonly used to describe moderate to severe flocculation of mud due to various contaminants.

The assembly of pumps, valves, lines, accumulators, and other items necessary to open and close the blowout preventer equipment.

The narrow walkway on top of a tank battery.