Changes

  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

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Earlier in this chapter, [[reservoir quality]] was defined as the “ability of a reservoir to store and transmit oil or gas.” We also can include the thickness and lateral extent as aspects of reservoir quality.

[[reservoir quality]] is defined as the “ability of a reservoir to store and transmit oil or gas.” We also can include the thickness and lateral extent as aspects of reservoir quality.

==Procedure: predicting location and quality==

==Procedure: predicting location and quality==

How do we predict the quality of a carbonate reservoir? The procedure outlined below is one way to approach this problem. Use the parts of the suggested procedure that fit your situation.<ref name=ch09r49>Read, J., F., 1995, Overview of carbonate platform sequences, cycle stratigraphy and reservoirs in greenhouse and ice-house worlds, in Read, J., F., Kerans, C., Webber, L., J., Sarg, J., F., Wright, F., M., eds., Milankovitch Sea-level Changes, Cycles, and Reservoirs on Carbonate Platforms in Greenhouse and Ice-house Worlds: SEPM Short Course 35, 183 p. Good summary of concepts of climatic effect on sea level cycles, carbonate deposition, and reservoir development.</ref><ref name=ch09r36>Loucks, R., G., Sarg, J., F., eds., 1993, Carbonate Sequence Stratigraphy, Recent Development and Applications: [http://store.aapg.org/detail.aspx?id=585 AAPG Memoir 57], 545 p.</ref> or .<ref name=ch09r52>Sarg, J., F., 1988, Carbonate sequence stratigraphy, in Wilgus, C., K., Hastings, B., S., Kendall, C., G. St. C., Posamentier, H., W., Ross, C., A., Van Wagoner, J., C., eds., Sea Level Changes: An Integrated Approach: SEPM Special Publication 42, p. 155–182.</ref>

How do we predict the quality of a carbonate reservoir? The procedure outlined below is one way to approach this problem. Use the parts of the suggested procedure that fit your situation.<ref name=ch09r49>Read, J., F., 1995, Overview of carbonate platform sequences, cycle stratigraphy and reservoirs in greenhouse and ice-house worlds, in Read, J., F., Kerans, C., Webber, L., J., Sarg, J., F., Wright, F., M., eds., Milankovitch Sea-level Changes, Cycles, and Reservoirs on Carbonate Platforms in Greenhouse and Ice-house Worlds: SEPM Short Course 35, 183 p. ''Good summary of concepts of climatic effect on sea level cycles, carbonate deposition, and reservoir development.''</ref><ref name=ch09r36>Loucks, R., G., Sarg, J., F., eds., 1993, Carbonate Sequence Stratigraphy, Recent Development and Applications: [http://store.aapg.org/detail.aspx?id=585 AAPG Memoir 57], 545 p.</ref> or <ref name=ch09r52>Sarg, J., F., 1988, Carbonate sequence stratigraphy, in Wilgus, C., K., Hastings, B., S., Kendall, C., G. St. C., Posamentier, H., W., Ross, C., A., Van Wagoner, J., C., eds., Sea Level Changes: An Integrated Approach: SEPM Special Publication 42, p. 155–182.</ref>

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| Break down cross-section stratigraphy into sequences and parasequences.

| Break down cross-section stratigraphy into sequences and parasequences (see [[Fourth- and fifth-order sequences (Parasequences)]].

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Regional cross sections are critical for all interpretations in an exploration play. Regional cross sections establish the correlations that structural, facies tract, and paleogeographic mapping is based on. They show stratigraphic patterns like progradation.

Regional cross sections are critical for all interpretations in an exploration play. Regional cross sections establish the correlations that structural, facies tract, and paleogeographic mapping is based on. They show stratigraphic patterns like progradation.

The scale should generally be [[distance::100 mi]] or more, and a grid of strike and dip sections should be made. Use all data that would aid in correlations, and show stratigraphic patterns including well data (logs, cuttings, and cores), seismic sections, and outcrop data.

The scale should generally be [[distance::100 mi]] or more, and a grid of [[strike]] and [[dip]] sections should be made. Use all data that would aid in correlations, and show stratigraphic patterns including well data (logs, cuttings, and cores), seismic sections, and outcrop data.

Use the diagram below to help identify large-scale carbonate platform stratal patterns in log cross sections or seismic sections.

Use the diagram below to help identify large-scale carbonate platform stratal patterns in log cross sections or seismic sections.