Pre-Grant Publication Number: 20100274543
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Prior Art Detail
Summary / Description
| Summary / Description | A paper that describes calculating connectivity based on 3D geostatistical models. Also is based on the "stratigraphy of connectivity," something which this patent app also claims. |
Basic Information
| Type of Prior Art | Print Publication |
| Publication Title * | Petroleum Geoscience |
| Author | David K. Larue and Joseph Hovadik |
| ISBN | |
| Page Range | 291-308 |
| Medium | Journal article |
| Publication Date * | November 1, 2006 |
| URL | |
Notes / To Do
| Notes | |
Excerpt
Excerpt To define connectivity, one or more parameters are defined
that differentiate ability for fluid to flow in the reservoir. For
example, a permeability, facies, porosity or Vshale cut-off (or
combination of cut-offs) may be applied that differentiates
rocks in which fluids could flow at some geologically reasonable
rates from rocks that are essentially impermeable. Time-scale is,
of course, important and the cut-offs considered in the oil
industry usually involve time-scales that are compatible with
producing a field, typically 20 years or so. Examples of
permeability cut-offs might be 0.1 mD or 1 mD for a relatively
light oil, or 10 mD or >100 mD for a heavier oil. In the present
study, a facies cut-off is used to define potential flow units.
Once potential flow units are defined based on the user
specified cut-off, a computer program is used to find the
connected cells in the reservoir (Allen 1978; King 1990; Allard
& HERESIM Group 1993; Deutsch 1998; Lo & Chu 1998;
Pardo-Iguzquiza & Dowd 2003). Groups of connected cells are
defined as geobodies, and geobody connectivity is defined as
the ratio of the volume of the largest geobody to the sum of all
the reservoir geobodies. Then, to define reservoir connectivity,
the volume of geobodies intersected by wells is divided by the
total volume of geobodies. |
Relevance
Claims
1
Relevance
Uses the "connectivity criterion" of the stratigraphy of connectivity.
Uses the "connectivity criterion" of the stratigraphy of connectivity.
Claim Chart
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