Segregation of sediments for oil and gas potential is a complex task. In this study three oil wells i.e. Dhurnal, Pariwali and Pindori were analyzed for oil and gas potential using geophysical well logs and isotopic analysis. 50 sediments (Eocene to Early Permian) from three productive oil wells were analyzed for source and depositional environment. The Eocene Chorgali limestone and Eocene Sakesar

Static reservoir modeling for optimizing the strategies of hydrocarbon field developments using seismic data and well logs is the focus of this study. The static reservoir modeling is conducted to estimate reservoir properties of the Upper Sarvak formation in one of the offshore oil fields in the Persian Gulf. The Sarvak Formation with middle Cretaceous age is considered as one of the most important

The predominantly calcareous Taiyuan Formation was formed during the Late Paleozoic period in the southern part of the North China block in the eastern Palaeotethys. We present the rare earth elements (REE) and petrography data from nine limestone beds in the Zhangji mine of the Huainan coalfield as proxies to interpret the depositional environment of Taiyuan Formation. Thin-section petrography indicates

Karst-related issues have become serious in the Three Gorges reservoir area, where the bank slopes consist of marlite. In this paper, the mineralogical and petrological properties and internal micro-structure development mechanism of the marlite were analyzed to determine its dissolution and weathering characteristics. In addition, the application of high-power electron microscopy identified micro-cracks

This work is meant to study the formation of salt through a progressive evaporation of water of sebkha Mchiguig. The precipitated salt in the case of sebkha Mchiguig is variable along the progressive evaporation. Weights of salt before each phase of precipitation indicate a heterogeneous evaporation process cumulating at 394 g L−1. With an increasing evaporation of Mchiguig brine, the number of precipitated

Based on their facies characteristics and stratal geometries, the carbonate deposits of the Middle Eocene outcropping in the Tamerza area (Western Gafsa Basin) led to the recognition of nine facies that were deposited in shallow marine environment summarized in a carbonate ramp model: homoclinal ramp under an arid climate. The depiction of facies features and the sequential analysis help to determine

The genesis of dolomite is an intensively debated and extensively studied problem in the field of carbonate sedimentology. This study focuses on the dolomite of the Dapu Formation in the Guixinan area, with the aim of deciphering the mechanism of dolomitization in the Dapu Formation. Three types of sedimentary environment, including the open marine of inner ramp, the restricted marine of inner ramp

The main aim of this study is to determine the location of the cave and cavities in Zarrinabad area, Lorestan province, west of Iran. For this purpose, a combination of hybrid AHP-TOPSIS procedure and content-area (C-A) fractal method has been conducted on three types of geoelectrical data derived from electrical resistivity, self-potential and mise-a-la-masse methods to detect karstic zones and determining

In the Shahejie Formation in the D oilfield area of the Laizhouwan Sag, Bohai Bay Basin, a mixed sedimentary structure of terrigenous clastic and carbonate rocks has developed. Scholars at home and abroad have performed much research on clastic and carbonate lithology identification. However, studies on lithology identification and reservoir characteristics of mixed siliciclastic-carbonate rocks in

The distribution area of carbonate rocks in Beijing is about 5071.44 km2, accounting for 30.19% of the land area in Beijing. The distribution areas of bare, covered and buried carbonate rocks are 2862.21 km2, 401.86 km2, 1803.37 km2, respectively. The carbonate rocks mainly includes dolomite in Changcheng Group of Jixian System (Jxg), dolomite in Wumishan Group of Jixian System (Jxw), dolomite in Tieling

Snowfall is the dominant form of precipitation in high mountainous areas and its driving melt water has an indispensable role in the hydrological cycle and groundwater recharge, particularly in karstic landscapes with high infiltration capacity. Monitoring snow cover area (SCA) and its melting process is essential for the investigation of climatic variables, hydrology, hydrogeology, and water resource

The Es1 sandstone is a fruitful hydrocarbon zone of Eocene Shahejie Formation. Therefore, the present study comprises the subsurface facies analysis established on the description of seven wells. Methods include core observation, thin section petrography, scanning electron microscope (SEM), cathodoluminescence (CL), and X-ray diffraction to evaluate the microfacies, lithofacies, and rock characteristics

Mixed sediments often occur in continental lake basins due to the coupling effects of the climate, hydrodynamic conditions, tectonic processes, and material abundances of provenances, and the mixed sedimentary rock formed in this process has dual characteristics. The response of mixed sedimentary rock to seismic waves is different from that of conventional sandstones or carbonate rocks and easily causes

Pliocene glaciations, post-glacial Tyrrell Sea deposition, peatland formation, and continuous isostatic uplift have created a unique environment for karst development on the Paleozoic carbonate rocks within the James Bay Lowland of Canada. Four types of sinkhole and two karst hydrogeological systems have been recognized in the study area. The hydrogeologically active karst system consists of solution

Investigating the diffusion law of slurry while grouting in fractured aquifer is of great significance to the safety in coal mining. In this paper, we comprehensively studied the slurry diffusion in the fractured aquifer, which was grouted through horizontal injection holes. A theoretical model of slurry diffusion in the inclined tubular fractures, as well as the relationship between the distance of

Water-inrush accidents often occur when coal seams are mined with thin water-resisting layer and high confined water. To prevent water-inrush from coal seam floor, based on the analysis of the characteristics of Ordovician limestone (OLS) karst in Feicheng mining area, a series of key technologies or methods for OLS aquifer were studied in this paper. First, the grouting area of the working face floor

The Dawu water source is the most important urban water supply source in Zibo City, Shandong Province, China. In this paper, the karst water level, precipitation, exploitation and flood discharge data during 2012–2018 were used to study and explore the characteristics and factors that control and influence the dynamic evolution of the karst water level in the Dawu water source area. The results showed

Magnesium calcite, which is usually observed in many natural low-temperature environments, was identified in Triassic limestones of the Polish part of the Germanic Basin. The occurrence of unstable magnesium calcite in Triassic limestones is remarkable. High-Mg calcite was identified in all beds of the Muschelkalk Karchowice Formation: Lower Crinoidea Beds, Lower Biohermal Beds, Upper Crinoidea Beds

Thick carbonate rocks were developed in the depression of the Tarim craton during the Cambrian-Middle Ordovician periods. The compressional tectonic movement during the Middle Caledonian-Hercynian created the paleouplifts, which became the base for the paleokarst in the Ordovician carbonate rocks. Based on the large quantity of seismic, drilling, and geological outcrop data, this study analyzed the

A thorough data analysis combined with groundwater modelling was conducted in an Austrian binary karst aquifer to better understand changes in the hydrological behaviour observed at a karst spring. During a period of 4 years after a major flood event the spring hydrograph appears to be more damped with lower peak flow and higher baseflow than in the years before. The analysis of the hydrograph recession