Integrated petrophysical study to validate water saturation from well logs in Bahariya Shaley Sand Reservoirs, case study from Abu Gharadig Basin, Egypt

El-Bagoury, M. A.

doi:10.1007/s13202-020-00969-3

Cited by 13 publications

(9 citation statements)

References 20 publications

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“…Miyairi and Itoh, depended on the Poupon et al model (1971) for shaly sands to produce a method to obtain three shaly sand factors: a, n, and m. This strategy can be defined by using several crossplots, like true resistivity formation versus porosity (R, vs p) and true resistivity formation versus porosity of the shaly formation (R, vs cpst) [38].…”

Section: Water Saturation Determination Methodsmentioning

confidence: 99%

A Review on Models for Evaluating Rock Petrophysical Properties

Mahdi

Farman

2023

IJCPE

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The evaluation of subsurface formations as applied to oil well drilling started around 50 years ago. Generally, the curent review articule includes all methods for coring, logging, testing, and sampling. Also the methods for deciphering logs and laboratory tests that are relevant to assessing formations beneath the surface, including a look at the fluids they contain are discussed. Casing is occasionally set in order to more precisely evaluate the formations; as a result, this procedure is also taken into account while evaluating the formations. The petrophysics of reservoir rocks is the branch of science interested in studying chemical and physical properties of permeable media and the components of reservoir rocks which are associated with the pore and fluid distribution. Throughout recent years, several studies have been conducted on rock properties, such as porosity, permeability, capillary pressure, hydrocarbon saturation, fluid properties, electrical resistivity, self-or natural-potential, and radioactivity of different types of rocks. These properties and their relationships are used to evaluate the presence or absence of commercial quantities of hydrocarbons in formations penetrated by, or lying near, the wellbore. A principal purpose of this paper is to review the history of development the most common techniques used to calculate petrophysics properties in the laboratory and field based primarily on the researchers and scientists own experience in this field.

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Section: Water Saturation Determination Methodsmentioning

confidence: 99%

A Review on Models for Evaluating Rock Petrophysical Properties

Mahdi

Farman

2023

IJCPE

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“…The approach is a conditional simulation method that respects the data's top-notch distribution and the corresponding spatial connection. The technique successfully generated information about the types, distributions, and permeabilities of rocks in the sandstone and carbonate fields [52].…”

Section: 𝐾 =mentioning

confidence: 99%

How to Estimate the Major Petrophysical Properties: A Review

Ahmed¹,

Farman²

2023

IJOGR

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Petrophysical property estimation is critical for reservoir predictions. It generally encompasses all coring, logging, testing, and sampling procedures. Almost 50 years ago, the evaluation of subsurface formations related to drilling oil wells got involved. It involves all techniques for coring, logging, testing, and sampling in general. It focuses on the process of interpreting logs and how to conduct lab tests that are important for evaluating formations below the surface, including a look at the fluids they represent. The casing is occasionally set to analyze the formations with more accuracy; as a result, this process is also considered. The scientific field of petrophysics of reservoir rocks is interested in researching porous materials' physical and chemical characteristics and the elements of reservoir rocks connected to pore and fluid distribution. Much research on the characteristics of various rocks, including their porosity, permeability, capillary pressure, hydrocarbon saturation, fluid properties, electrical resistivity, self-or natural potential, and radioactivity, has been carried out in recent years. The existence or absence of economic quantities of hydrocarbons in formations penetrated by or around the wellbore is assessed using these qualities and their relationships. This paper's main goal is to evaluate the historical evolution of the most popular methods for calculating petrophysics parameters in the lab and on the ground, mostly based on the researchers' scientists' knowledge of that field.

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“…According to [32] and [33], a low-contrast pay zone estimates laminated sand-shale reservoir areas, particularly at the dry oil productive wells indicated by high clay volumes. The application of this method in this state is important to confirm the excess conductivity increase compared with the surrounding rock.…”

Section: Vertical Variation Settingmentioning

confidence: 99%

Improving Hydrocarbon Prospect Evaluation at Badr El Din-3 and Badr El Din-15 Oil Fields by Integrating 3D Structural Modeling and Petrophysical Analysis for Abu-Gharadig Basin, North of Western Desert, Egypt

et al. 2022

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The BED-3 and BED-15 oil fields are situated in the northwestern portion of the Abu-Gharadig sedimentary basin. The Basin is an E–W trending intracratonic rift basin and ranges in age between the Late Jurassic and Early Cretaceous. Significant extension events, followed by subsidence, took place throughout the Middle Jurassic and continued to the Cretaceous. The relative movement of Africa toward Laurasia in the Jurassic changed from eastward to westward between the Early Cretaceous and the Santonian. Therefore, a compressive force due to the change in direction affected the African plate and gave rise to the reversal of basins (such as the Abu-Gharadig sedimentary basin). Inverted anticlines are important structural traps for hydrocarbons that were formed by the compressional forces acting on the Abu-Gharadig sedimentary basin. This study primarily focuses on understanding the BED-3 and BED-15 fileds' structural style, in addition to the subsurface structure that has participated in the petroleum accumulation in the Abu-Roash C Member (Abu-Roash Formation) in the oil fields, in order to maximize oil recovery in these two fields through new wells. The aim of this study was achieved based on information from 30 two-dimensional seismic profiles integrated with well log data from nine boreholes. The Abu-Roash C reservoir represented by two horizons, in addition to minor and major faults, are recognized and marked. Structural trend in the study area ranges from ESE–WNW to NW–SE, and structures consist of folds and faults, forming horsts, grabens, and half-grabens, all of which are favorable for hydrocarbon accumulation. The petrophysical analysis performed on the BED3-8 well shows approximately 87.4% hydrocarbon saturation within the reservoir rock, while the hydrocarbon saturation of the available wells in BED-15 is calculated to vary between 56.1 and 78.8%. Hence, this study suggests that BED-3 and BED-15 oilfields have an excellent chance of producing hydrocarbons.

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Integrated petrophysical study to validate water saturation from well logs in Bahariya Shaley Sand Reservoirs, case study from Abu Gharadig Basin, Egypt

Cited by 13 publications

References 20 publications

A Review on Models for Evaluating Rock Petrophysical Properties

A Review on Models for Evaluating Rock Petrophysical Properties

How to Estimate the Major Petrophysical Properties: A Review

Improving Hydrocarbon Prospect Evaluation at Badr El Din-3 and Badr El Din-15 Oil Fields by Integrating 3D Structural Modeling and Petrophysical Analysis for Abu-Gharadig Basin, North of Western Desert, Egypt

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