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Combined migration method for basin modeling

a basin modeling and migration method technology, applied in the field of basin modeling combined migration methods, can solve the problems of high computational costs, inability to achieve, increase simulation runtimes,

Inactive Publication Date: 2014-12-04
SCHLUMBERGER TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent describes a method for modeling the migration of hydrocarbon fluids in a basin model. The method involves decomposing the model to create two groups of cells with different permeability levels. The first group has cells with low permeability, while the second group has cells with high permeability. The method also includes analyzing the migration of the fluids in each group separately using different algorithms. The technical effect of this approach is that it allows for more accurate modeling of the migration process of hydrocarbon fluids in a basin model.

Problems solved by technology

These differences in the permeability introduce challenges m migration modeling.
However, this may not be feasible because simulation runtimes increase when the time-step duration is decreased.
However, compared to other migration methods, smaller time-steps are used, again introducing high computational costs.

Method used

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  • Combined migration method for basin modeling
  • Combined migration method for basin modeling
  • Combined migration method for basin modeling

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Embodiment Construction

[0016]The following detailed description refers to the accompanying drawings. Wherever convenient, the same reference numbers are used in the drawings and the following description to refer to the same or similar parts. While several embodiments and features of the present disclosure are described herein, modifications, adaptations, and other implementations are possible, without departing from the spirit and scope of the present disclosure.

[0017]Embodiments of the present disclosure provide a migration method, which may be based upon a domain decomposition of a basin model and systems for conducting such methods. FIG. 1 illustrates a basin model 100 having a high range of permeability among layers, according to an embodiment. As shown, the basin model 100 includes seven layers 101-107; however, as may be appreciated, the number of layers in the model 100 may vary depending on the domain being mapped, the dimensions of the domain, and the like.

[0018]The permeability in the model 100...

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Abstract

A method for modeling a migration of hydrocarbon fluids. The method may include decomposing, by operation of a processor, a domain of a basin model to produce a first plurality of cells having a permeability below a threshold value and a second plurality of cells having a permeability above the threshold value. A first migration analysis may be performed to analyze a relatively slow migration starting in the first plurality of cells. A second migration analysis may be performed to analyze a relatively faster migration starting m the second plurality of cells.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of a related U.S. Provisional Patent Application having Ser. No. 61 / 828,439 filed May 29, 2013, which is incorporated by reference herein in its entirety.BACKGROUND[0002]Basin modeling is used to assess the generation, migration, and accumulation of hydrocarbons in sedimentary basins. In basin modeling, the permeability may span several orders of magnitude. Highly permeable sandstones present in reservoir rocks have permeabilities up to the order of several Darcy (D), whereas for compacted shale, the permeability drops down to a few nano-Darcy (nD), i.e., approximately nine orders of magnitude difference. Using these permeabilities, the time-scales on which the hydrocarbon flow takes place may be estimated. These differences in the permeability introduce challenges m migration modeling.[0003]Accurate treatment of the hydrocarbon flow within a sedimentary basin using Darcy's law without further approxima...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B43/00
CPCE21B43/00E21B49/00G01V20/00
Inventor KLEINE, ADRIANKAUERAUF, ARMIN I.
Owner SCHLUMBERGER TECH CORP
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