4 edition of Fractured reservoirs found in the catalog.

Fractured reservoirs

characterization and modeling

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Published by Administrator in Rocky Mountain Association of Geologists

  • United States
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    • Rocky Mountain Association of Geologists

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      • Includes bibliographical references.

        StatementRocky Mountain Association of Geologists
        PublishersRocky Mountain Association of Geologists
        LC Classifications1997
        The Physical Object
        Paginationxvi, 114 p. :
        Number of Pages52
        ID Numbers
        ISBN 100933979207

        nodata File Size: 3MB.

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How naturally fractured reservoirs are formed Unlike induced fractures, natural fractures are caused by stress in the formation usually from tectonic forces such as folds and faults. In this case, the secondary minerals will act as a natural proppant agent and fracture closure will be significantly reduced not completely stopped even in overpressured reservoirs. The heterogeneity of formation may leave a long horizontal well unideal well type to study EOR mechanisms.

Primary porosity is intergranular and controlled by deposition and Fractured reservoirs. : Incorporating Capillary Pressure, Pore Throat Aperture Radii, Height Above Free Water Table, and Winland r35 Values on Pickett Plots, AAPG Bulletin, v. I recommend to always budget the necessary funds to core at least a few key wells. Microscopically, these regions could be "dead-end" or "storage" pores or, macroscopically, they could be discrete volumes of low-permeability matrix rock combined with natural Fractured reservoirs in a reservoir.

Numerical 2D well testing models using unstructured Voronoi grids PEBI provide a significant and necessary extension to the more conventional Cartesian, semilogarithmic and log-log derivative crossplots. A Review — and a Look Ahead Since my early days working with naturally fractured reservoirs in the early seventies, I have seen extraordinary advances in the geophysical, geological and engineering fields.

Fractured Basement Reservoirs: Big, bashful, belligerent, but ultimately beautiful

We want to target lots of fractures Fractured reservoirs obvious reasons — but we also want to target lots of different orientations because not all fracture sets are automatically permeable — later geological events such as precipitation of minerals from warm hydrothermal fluids, alteration of minerals during subaerial exposure, or later stress regimes might clamp or clog those of certain orientations closed.

A dichotomy of the internal voids of reservoir rocks has been suggested. 1974Amott 1959and Kennedy et al. The bad news is that this can Fractured reservoirs a dramatic lateral variation in HC saturation at any one level as the contact is approached, but the good news is that our deepest significant HC occurrences may well be our best indicator of where the contact really is — perhaps reflecting a structural control much deeper than the most obvious ones.

Something similar Fractured reservoirs happening with fractured basement reservoirs. Generally, the single-well production performance reveals three stages: 1 normal production without water invasion; 2 production with water invasion and water energy supply; and 3 deteriorating production due to water coning. Yet like the nuclear industry, it is these accidents which unveil understanding so that we can begin to harness their full glory. CO 2 did not enter the formation.

Caught one — now what? Yet these accidents, though tragic, have led to better understanding and today the world stands poised at a new and fundamentally different generation of nuclear reactors.

Penetration rates can increase significantly while drilling all types of secondary porosity. A fractured reservoir which is preferentially oil-wet, especially one with low rock permeability, will be difficult to produce because the capillary forces inhibit entry of water by imbibition Fig.

The quality imaging and associated fracture detection workflows that are now available are yielding results that are sometimes jaw-droppingly good. Often where they have worked it has been as secondary reservoirs to Fractured reservoirs overlying conventional resources — and making them work standalone — though not impossible, is certainly harder.