The Nature of Carbonate Depositional Systems: Comparison of Carbonates and Siliciclastics. The Classification and Nature of Carbonate Porosity. Diagenetic Environments of Porosity Modification and Tools for their Recognition in the Geologic Record. Normal Marine Diagenetic Environments. Evaporative Marine Diagenetic Environments. Introduction to Diagenesis in the Meteoric Environment. Meteoric Diagenesis Environments. Dolomitization Associated with Meteoric and Mixed Meteoric and Marine Waters. Burial Diagenetic Environment. References. Index.

The porosity of carbonates as compared to sandstones is vastly more complex with simple intergrain porosity dominates sandstones while carbonates commonly exhibit complex secondary pore systems that may evolve during burial. Initial porosity of carbonates is much greater than that seen in sandstones due to common intragranular porosity. Fractures, both natural and induced, are much more important in carbonates. Diagenesis is a major factor in the development of ultimate pore systems in carbonates. The geologically based Choquette–Pray carbonate porosity classification is the most commonly used scheme. Their 15 different pore types are based on fabric selectivity. A major feature of the classification is its recognition of the potential of porosity evolution through time and burial. Three porosity development zones are recognized: eogenetic, dealing with surface processes; mesogenetic, dealing with burial processes; and telogenetic, exhumed rocks dealing again with surface processes. This classification is best used during exploration, while other engineering-based classifications such as the one developed by Lucia should be used in reservoir characterization and as input for reservoir modeling. Examples of all 15 pore types are given.

SEPM (Society for Sedimentary Geology) and the CSPG (Canadian Society of Petroleum Geologists) convened the Mountjoy II Carbonate Research Conference in Austin, Texas, from June 25-29, 2017. The conference, honoring Eric Mountjoy and his numerous contributions as a geologist and graduate student supervisor, was attended by ~140 professors, students, and industry geologists and engineers from around the world. The theme for the conference and now SEPM Special Publication 112-Carbonate Pore Systems-follows the general concept to have topics that are relevant to the petroleum industry and therefore blend the best of cutting-edge geoscience research with industry needs by offering a major publication featuring studies with significant new results in the analysis of carbonate pore systems. This new SEPM-CSPG Special Publication is timely given the renewed interest in carbonate reservoirs, including those in carbonate mudrock deposits, as well as the many new technical advances and approaches that are being utilized in diagenetic studies.

The 2nd Edition of Carbonate Reservoirs aims to educate graduate students and industry professionals on the complexities of porosity evolution in carbonate reservoirs. In the intervening 12 years since the first edition, there have been numerous studies of value published that need to be recognized and incorporated in the topics discussed. A chapter on the impact of global tectonics and biological evolution on the carbonate system has been added to emphasize the effects of global earth processes and the changing nature of life on earth through Phanerozoic time on all aspects of the carbonate system. The centerpiece of this chapter—and easily the most important synthesis of carbonate concepts developed since the 2001 edition—is the discussion of the CATT hypothesis, an integrated global database bringing together stratigraphy, tectonics, global climate, oceanic geochemistry, carbonate platform characteristics, and biologic evolution in a common time framework. Another new chapter concerns naturally fractured carbonates, a subject of increasing importance, given recent technological developments in 3D seismic, reservoir modeling, and reservoir production techniques. Detailed porosity classifications schemes for easy comparison Overview of the carbonate sedimentologic system Case studies to blend theory and practice

An accessible resource, covering the fundamentals of carbonate reservoir engineering Includes discussions on how, where and why carbonate are formed, plus reviews of basic sedimentological and stratigraphic principles to explain carbonate platform characteristics and stratigraphic relationships Offers a new, genetic classification of carbonate porosity that is especially useful in predicting spatial distribution of pore networks.

One main target in petroleum recovery is the description of of the three-dimensional distribution of petrophysical properties on the interwell scale in carbonate reservoirs, in order to improve performance predictions by means of fluid-flow computer simulations The book focuses on the improvement of geological, petrophysical, and geostatistical methods, describes the basic petrophysical properties, important geology parameters, and rock fabrics from cores, and discusses their spatial distribution. A closing chapter deals with reservoir models as an input into flow simulators.