دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to cease producing oil and gas from a well when it becomes unprofitable or to cease further work on a newly drilled well when it proves not to contain profitable quantities of oil or gas. Several steps are involved: part of the casing may be removed and salvaged;one or more cement plugs are placed in the borehole to prevent migration of fluids between the different formations penetrated by the borehole;and the well is abandoned. In most oil-producing states, it is necessary to secure permission from official agencies before a well may be abandoned.

to cease efforts to produce or inject fluids in a wells and to plug the well sufficiently to protect the environment and the ability to redrill and develop other reserves at a later date.

n pl: the characteristic patterns for various degrees of cement bonding between the casing and the borehole that appear on an oscilloscope display when a sonic cement bond log is made.

n: one of usually two, three, or more mud tanks that holds drilling mud that is being circulated into a borehole during drilling. They are called active tanks because they hold mud that is currently being circulated.

n: see drift angle.

n: The angle between the tangent of borehole axis and vertical line, measured by inclinometer.

n: The cross-section area of annular space between drill column and borehole wall.

n: This method assumes the borehole axis in adjacent measurement station is arc which located in oblique plane. It is a kind of well path computational method.

in a horizontal plane, it is the angle (measured clockwise) of well path departure usually from true or magnetic north. It may also be expressed as the compass direction of the path of the well bore as measured by a borehole survey. (Note: check the speci

n: The method assuming that borehole axis of two adjoining measured points is a polygonal line. The length of one part of polygonal line is equal to another part. The deviation angle and azimuth of upper part is same with upper measured point and the deviati

n: an expandable, cylindrically shaped gripping mechanism that is fitted into an overshot to retrieve fish from the borehole. See grapple.

borehole pressure integrity.