دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

any of various methods, chiefly reservoir drive mechanisms and enhanced recover techniques, designed to improve the flow of hydrocarbons from the reservoir to the wellbore or to recover more oil after the primary and secondary methods (water and gas flood

n: an ordinary light bulb.

n: (in.-lb) one-twelfth of a footpound and a measure of small amounts of twisting fon;e, or torque. Compare footpound (ft-lb).

n: see drift angle.

n: a measure of the angular of the wellbore from vertical.somtimes referred to as drift angle.

the measurement of a wells deviation from vertical. When used with fluids, a positive number indicates upflow and a negative number may represent downflow.

n: see induction survey.

open-hole log that measures resistance difference between formation and wellbore fluids to various depths in the formation.

n: an electric well log in which the conductivity of the formation rather than the resistivity is measured. Because oilbearing formations are less conductive of electricity than water-bearing formations, an induction survey, when compared with resistivity readings, can aid in determination of oil and water zones.

n: a packer with an element that inflates by means of gas or liquid pumped from the surface through a line. It is deflated by means of slots that can be opened to allow the gas or liquid to flow out They are used when a temporary packer is needed in a hole with weakened casing that could be damaged by mechanical slips.

n: A type of packer that uses an inflatable bladder to expand the packer element against the casing or wellbore. In preparation for setting the packer, a drop ball or series of tubing movements are generally required, with the hydraulic pressure required to

a device with metal slats or cords woven around a rubber bladder with an elastomer cover designed to inflate in the wellbore and provide isolation.

n: (IMO) an agency of the United Nations that provides an international forum for nations to discuss international cooperative efforts to improve marine safety and to protect the ocean environment. International treaties on safety (SOLAS) and environmental protection (MARPOL) have been negotiated at IMO. The governing body of the IMO is the Assembly, which meets once every two years and is open to all 136 member states (countries). IMO is headquartered in London. Address: 4 Albert Embankment;London SE I 75R;717357611.

n: an area within a permeable rock adjacent to a wellbore into which a filtrate (usually water) from the drilling mud has passed, with consequent partial or total displacement of the fluids originally present in the zone.

n: The volume close to the borehole wall in which some or all of the moveable fluids have been displaced by mud filtrate. It consists of the flushed zone and the transition zone or annulus. In simple models, the invaded zone and the flushed zone are consider

the part of the rock next to the wellbore into which wellbore fluid has leaked.