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System and method to generate molecular formula distributions beyond a predetermined threshold for a petroleum stream

A predetermined threshold and molecular formula technology, applied in the analysis of materials, prediction of chemical properties, instruments, etc., can solve problems such as undetectable

Inactive Publication Date: 2015-02-04
EXXON RES & ENG CO
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, it is not unusual for the FTICR to be unable to detect approximately 40% by weight of the highest boiling material of the resid

Method used

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  • System and method to generate molecular formula distributions beyond a predetermined threshold for a petroleum stream
  • System and method to generate molecular formula distributions beyond a predetermined threshold for a petroleum stream
  • System and method to generate molecular formula distributions beyond a predetermined threshold for a petroleum stream

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Embodiment Construction

[0033] Reference will now be made in detail to the preferred embodiments of the disclosed subject matter, examples of which are illustrated in the accompanying drawings. The systems and methods herein are generally directed to evaluating the composition of petroleum streams, but are directed to other similar or suitable uses.

[0034] In accordance with the disclosed subject matter, methods are provided for extrapolating a molecular formula distribution beyond a predetermined threshold. The method generally includes: obtaining an initial molecular formula distribution within a predetermined threshold of the petroleum stream sample; identifying a correlation between two or more molecular properties of the initial molecular formula distribution; extrapolating the initial molecular formula distribution beyond pre-determining a threshold to construct an extrapolated molecular distribution; and renormalizing the extrapolated molecular formula distribution based on the renormalizati...

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Abstract

Methods for generating molecular formula distributions beyond a predetermined threshold for a petroleum stream are disclosed. An initial molecular formula distribution within a predetermined threshold is obtained for a petroleum stream. A correlation between two or more molecular properties of the initial molecular formula distribution is identified, and the initial molecular formula distribution is extrapolated beyond the predetermined threshold along the correlation. The extrapolated molecular formula is renormalized based on renormalized based on renormalization data obtained from the sample. The renormalized molecular formula distribution can then be blended with the initial molecular formula distribution, reconciled to secondary analytical measurements, and / or used to create a model of composition and / or a molecular composition-based model of a resid upgrading process. Systems for implementing the methods are also disclosed.

Description

technical field [0001] The present application generally relates to systems and methods for generating molecular formula distributions and composition models to accommodate the limitations of current measurement methods. For example, the systems and methods disclosed herein can be used to extrapolate molecular formula distributions beyond boiling point thresholds or similar limits. Background technique [0002] Petroleum streams are complex hydrocarbon mixtures containing many different molecular species. These streams include various hydrocarbon streams from processes targeting the molecular composition of petroleum. For example, straight-run petroleum crude oils may contain molecules ranging from highly volatile C4 hydrocarbons to non-volatile asphaltenes. These streams are very complex and feature many different molecular species. Therefore, any molecular approximation of composition is basically a model, the model of composition (MoC). Analysis of petroleum compositi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G01N33/28
CPCG06F19/701G06F19/704G01N33/2823G16C20/30G16C10/00
Inventor 罗兰德·B·萨赫尔何恺源
Owner EXXON RES & ENG CO
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