دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

measurement of formation properties far enough from the wellbore to minimize the effects of the invaded zone.

v: to increase the depth of a well. Deepening is generally a workover operation carried out to produce from a deeper formation or to control excessive gas found in the upper levels of a reservoir.

n: Increasing depth of wellbore. Usually it is a workover operation.

n: The drill bit deviates the wellbore axis due to cross force of formation produced by angle of bedding, nonisotropy and so on.

n: The high intensity cement plug put at definite position in the wellbore.

n: a change in the angle of a wellbore. In directional drilling, it is measured in degrees from the vertical.

the total change in angle of a wellbore in a given distance.

n: Refers to the drill bit deflecting former wellbore axis due to personal composition.

n: A method of examining overflowing or leakage in the wellbore. Acquiring difference of circulating rate by computing the difference of delivery capacity and return flow of pump with electro magnetic current meter.

n: the mass or weight of a substance per unit volume. For instance, the density of a drilling mud may be 10 pounds per gallon, 74.8 pounds/cubic foot, or 1,198.2 kilograms/cubic metre. Specific gravity, relative density, and API gravity are other units of density.

n: Mass per unit volume expressed in pounds per gallon (ppg),grams per cubic (g/cc),or pounds per cubic ft (lb/cu.ft). Drilling-fluid density is commonly referred to as mud weight.


the mass per volume of a substance. Density of fresh water is 8.33 pounds per gallon or 1 gram/cc.

n: The technician pouring cement slurry into wellbore.

n: 1. the distance to which a well is drilled, stipulated in a drilling contract as contract depth. Total depth is the depth after drilling is finished. 2. on offshore drilling rigs, the distance from the baseline of a rig or a ship to the uppermost continuous deck. 3. the maximum pressure that a diver attains during a dive. expressed in feet (metres) of seawater.

n: The depth of drilling or The position of down hole equipment or operation in the wellbore.