Monthly Archives for September 2009

Gas Process Troubleshooting – Increasing Gas Flow at Wellhead

There are three basic problems which reduce the flow of gas from a well which has a sufficient gas pressure, porosity and permeability in the surrounding sand formation to sustain a much higher production rate: 1. Restriction to flow down … Continue reading

27. September 2009 by Jack
Categories: Well Site Troubleshooting | Tags: | Leave a comment

Petroleum Product – The atmospheric straight run gas oils

Usually there will be two gas oil side streams, a light gas oil side stream and belowthis take off a heavy gas oil side stream is withdrawn. Both these side—streams are steam stripped to meet their respective flash point specification … Continue reading

26. September 2009 by Jack
Categories: Fractions from atmospheric and vacuum distillation | Tags: | Leave a comment

Petroleum Product – Straight run kerosene

This fraction is usually the first side stream of a conventional atmospheric distillation unit. It may be cut to meet a burning oil specification or become a component in Jet Fuel finished product. Its cut range is usually between 360?F … Continue reading

26. September 2009 by Jack
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Petroleum Product – The naphthas

There are usually two naphtha cuts produced from most crude. These are: Light naphtha (sometimes called light gasoline) Heavy naphtha. Both these streams are the bottom product of the debutanizer unit. They are separated in a naphtha splitter fractionation tower. … Continue reading

26. September 2009 by Jack
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Petroleum Product – Refinery gas and the LPGs

In many refineries most of theC4’s and lighter are removed from the atmospheric column overhead distillate in the first column of the light end unit. This is the unit’s debutanizer column. Some refineries however chose to separate the light naphtha … Continue reading

26. September 2009 by Jack
Categories: Fractions from atmospheric and vacuum distillation | Tags: | 1 comment

Petroleum Product – Atmospheric overhead distillate

This is not strictly a cut but consists of all the light material in the crude absorbed into the total overhead distillate from the crude tower. This distillate, and in most cases, together with similar distillates from other processes form … Continue reading

26. September 2009 by Jack
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Petroleum Product – The vacuum residue

This is the bottom product from the vacuum distillation unit. Just as in the case of the atmospheric residue it has several options for its use in meeting the refinery’s product slate. In the case of the energy refineries it … Continue reading

26. September 2009 by Jack
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Petroleum Product – The vacuum distillation of atmospheric residue

In modern refinery practice the distillation of atmospheric residue is accomplished under high vacuum conditions in a specially designed tower whose internal equipment ensures a very lower pressure drop. Normally the vacuum conditions in the flash zone of the tower … Continue reading

26. September 2009 by Jack
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Petroleum Product – The atmospheric residue

This is the bottom product from the atmospheric distillation of the crude oil. Most crude oils are distilled in the atmospheric crude oil tower to cut the atmospheric residue at a +650?F up to a +680?F cut point. Cutting the … Continue reading

26. September 2009 by Jack
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Piping – Moody Friction Factor

The factor of proportionality in the previous equations is called the  Moody friction factor and is determined from the Moody resistance diagram shown in Figure 8-1. The friction factor is sometimes expressed in terms of the Fanning friction factor, which … Continue reading

25. September 2009 by Jack
Categories: Basic Principles | Tags: | Leave a comment

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