دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: 1. to seal the hole against formation fluids by allowing the build up of wall cake.2. to block off the flow of oil into the wellbore.

n: in drilling, to seal the hole off from the formation water or oil by using mud. Applies especially to the undersirable blocking off of the flow of oil from the formation into the well bore. Special care is given to the treatment of drilling fluid to avoid

more than one producing wellbore from a single wellbore or mother bore.

n: two or more hydrocarbon producing formations that are penetrated by a single wellbore.

n: an arrangement for producing a well in which one wellbore penetrates two or more petroleum- bearing formations. In one type, multiple tubing strings are suspended side by side in the production casing string. each a different length and each packed to prevent the commingling of different reservoir fluids. Each reservoir is then produced through its own tubing string. Alternatively. a smalldiameter production casing string may be provided for each reservoir, as in multiple miniaturised or multiple tubing- less completions. See dual completion.

n: an arrangement for producing a well in which one wellbore pentrates two or more petrolum-bearing formations that lie one over the other.the tubing strings are suspended side-by-side in the production casing, each a different length and each packed off to

having multiple and often separate completions into different producing pays but in the same wellbore. The completions may be concentric or side-by-side where the pays are not to be commingled or stacked where the flow is to be commingled.

n: a directional survey that provides a record of drift angle and direction at various depths in the hole. See directional survey.

n: A technique for determining the deviation of a wellbore. The multishot tool provides more accuracy than the single-shot tool and is usually used in highly deviated wells.

damage to the permeability occurring within the first few feet away from the wellbore.

n: The point on a string of tubulars at which there are neither tension nor compression forces present. Below the neutral point, there will be compression forces that build toward the bottom of the wellbore. Above the neutral point, tensile forces build to a

the theoretical point in pipe length that accounts for the effects of buoyancy.

n: a drill collar made of an alloy that does not affect the readings of a magnetic compass placed within it to obtain subsurface indications of the direction of a deviated wellbore. Used in directional drilling.

n: cement slurry that the oil or diesel containes some crude oil substitutes for the water.

n: a kinds wood filber that is oil wettability after procssed.