The porosity within a reservoir rock is a basic parameter for the reservoir characterization. The present paper introduces two intelligent models for identification of the porosity types using image analysis. For this aim, firstly, thirteen geometrical parameters of pores of each image were extracted using the image analysis techniques. The extracted features and their corresponding pore types ...

Abstract Core samples were collected from three wells, one onshore and two offshore, Qatar’s Upper Jurassic Arab D reservoir. The subjected to multiproxy petrographic chemical analyses identify their micro- nanoporosity types understand evolution destruction. Based on the petrophysical properties of studied rocks, succession was divided into seven rock types. Primary microporosity includes inte...

The present work focuses on the upper Cretaceous (Cenomanian-early Campanian) carbonate successions in selected wells from northwestern Iraq. These are represented by Gir Bir Turonian), Wajna (late Santonian) and Mushorah (early Formations. succession has affected early burial near-surface, unconformity-related deep diagenesis cementation, neomorphism, dolomitization, dedolomitization, silicifi...

A mature understanding of the sandstone gas reservoir in the Xiaoheba Formation in the southeastern Sichuan Basin remains lacking. To assess the reservoir characteristics and the origin of the high-quality reservoir in the Xiaoheba Formation, this paper uses systematic field investigations, physical property analysis, thin section identification, scanning electron microscopy and electron microp...

The microfacies analysis and porosity evolution of the Khurmala Formation (Paleocene-Early Eocene) were studied in Gomaspan Sheraswar sections High Folded Zone, northeastern Erbil City, Kurdistan Region (N-Iraq). Lithologically, section is about 23.5 m comprised thick to massive bedded brecciated grey dolomitic limestone lower middle parts interbedding medium beds yellow calcareous shale upper ...

The present study focuses on facies analysis and the reservoir characteristics of the Asmari Formation in the Aghajari oilfield (located in the Zagros fold-thrust belt, southwest Iran), and how they are linked to depositional environments and reservoir characteristics. This formation consists of about 380 m carbonates with some siliciclastic intercalations. Based on the integration of 1200 m of...

To achieve an accurate and comprehensive characterization of the multiscale pore–fracture characteristics Permian coal in Jingbian Block, Ordos Basin, a combination scanning electron microscopy (SEM), X-ray computed tomography (CT), nuclear magnetic resonance (NMR) techniques was utilized. With these experiments, mineral composition, pore size distribution (PSD), porosity, connectivity pores sa...

Elevated arsenic concentrations are common in water recovered from aquifer storage and recovery (ASR) systems in west-central Florida that store surface water. Investigations of the Suwannee Limestone of the Upper Floridan aquifer, the storage zone for ASR systems, have shown that arsenic is highest in pyrite in zones of high moldic porosity. Geochemical modeling was employed to examine pyrite ...

Impure reworked evaporitic sandstones, preserved on Meridiani Planum, Mars, are mixtures of roughly equal amounts of altered siliciclastic debris, of basaltic provenance (40F10% by mass), and chemical constituents, dominated by evaporitic minerals (jarosite, Mg-, Ca-sulfatesFchloridesFFe-, Na-sulfates), hematite and possibly secondary silica (60F10%). These chemical constituents and their relat...

Due to the diversity of pore types, it is challenging characterize Middle East’s Cretaceous carbonate reservoir or accurately predict its petrophysical properties. In this paper, structure in first classified using a comprehensive method. Then, based on identified new permeability model with high prediction precision established. The dominated by 6 such as intergrain pores and moldic pores, roc...