1. the rate at which drilled solids tend to settle in the borehole as a well is being drilled. 2. difference between the annular velocity of the fluid and the rate at which a cutting is removed from the hole.

The speed at which drilling fluid or cement moves in the annulus. it is important to monitor annular velocity to ensure that the hole is being properly cleaned of cuttings, cavings and other debris while avoiding erosion of the borehole wall.
the annular velocity is commonly expressed in units of feet per minute or, less commonly, meters per [...]

A worker in the oil industry, especially one in the field.

Those portions of reservoir gas which are liquefied at the surface in field facilities or gas processing plants.

An organization whose function is to establish standards and recommended practices for the field of corrosion control.

Expected ultimate recovery from a field.

The evaluation of physical properties, usually including pressure, temperature and wellbore trajectory in three-dimensional space, while extending a wellbore. mwd is now standard practice in offshore directional wells, where the tool cost is offset by rig time and wellbore stability considerations if other tools are used.
the measurements are made downhole, stored in solid-state memory [...]

Adding new wells in an existing field within the original well patterns to accelerate recovery or to test recovery methods.

A device that prevents leakage along a piston, rod, propeller shaft, or other moving part that passes through a hole in a cylinder or vessel. it consists of a box or chamber made by enlarging the hole and a gland containing compressed packing. on a well being artificially lifted by means of a sucker rod [...]

The phase of petroleum operations that occurs after exploration has proven successful, and before full-scale production. the newly discovered oil or gas field is assessed during an appraisal phase, a plan to fully and efficiently exploit it is created, and additional wells are usually drilled.

The part of the bit that includes a hole or opening for drilling fluid to exit. the hole is usually small (around 0.25 in. in diameter) and the pressure of the fluid inside the bit is usually high, leading to a high exit velocity through the nozzles that creates a high-velocity jet below the nozzles. [...]

1. gas or vapor that is flared.
2. unwanted natural gas that is disposed of by burning as it is released from an oil field.

A formation in which the velocity of the compressional wave traveling through the borehole fluid is greater than the velocity of the shear wave through the surrounding formation. in such conditions, there is no critical refraction of the shear wave and no shear head wave generated, so that standard techniques based on monopole transducers cannot [...]

A formation where the velocity of the compressional wave traveling through the borehole fluid is less than the velocity of the shear wave through the surrounding formation. in such conditions a shear head wave is generated, so that standard techniques based on monopole transducers can be used to measure formation shear velocity.
in hard formations, several [...]

The phase of petroleum operations that immediately follows successful exploratory drilling. during appraisal, delineation wells might be drilled to determine the size of the oil or gas field and how to develop it most efficiently.