Papers by S M TALHA QADRI
Organic geochemical characteristics of the Late Cretaceous coal and carbonaceous shale succession from the Taranaki Basin, New Zealand: Implications for sedimentary environmental setting and petroleum generation potential
Geological journal, Apr 23, 2024
Integrated wireline log and seismic attribute analysis for the reservoir evaluation: A case study of the Mount Messenger Formation in Kaimiro Field, Taranaki Basin, New Zealand
Journal of Natural Gas Science and Engineering, Mar 1, 2022
Organic matter characteristics and gas generation prospect of the Late Cretaceous fluvial deltaic organic‐rich shale in the offshore <scp>Jiza‐Qamar</scp> Basin, Yemen based on organic geochemical, macerals composition, and biomarker results combined with <scp>1‐D</scp> basin modelling
Geological Journal, Aug 3, 2023
Organic‐rich shale samples of the Late Cretaceous Mukalla Formation from the Al‐Fatk1 well in the... more Organic‐rich shale samples of the Late Cretaceous Mukalla Formation from the Al‐Fatk1 well in the offshore Jiza‐Qamar Basin, eastern Yemen, were examined using bulk organic geochemistry, microscopic examination, and biomarker measurements combined with 1‐D basin modelling, to evaluate the organic matter characteristics and their ability to generate gas. The studied Mukalla shale samples are characterized by their high organic matter content with total values of up to 14.50 wt.%, and contain mainly hydrogen‐poor Type III kerogen, indicating elevated gas generation potential. The hydrogen‐poor kerogen was also demonstrated by biomarker measurements combined with an abundance of land‐derived organic matter (i.e., vitrinite and inertinite) as established by microscopic investigation. The biomarkers of the studied organic‐rich shales were characterized by a high Pr/Ph ratio, abundance of C29 regular steranes, high C27 17α (H)‐22, 29, 30‐trisnorhopane compared with C27 18α (H)‐22, 29, 30‐trisnorneohopane, all providing evidence for the organic matter being derived primarily from higher land plant organic matter, deposited in fluvial deltaic environments under highly oxic conditions. The bulk carbon isotope data agree with the findings of terrigenous organic matter. The maturity indicators show that the examined organic‐rich shale samples have entered the main oil stage and are at the beginning of wet gas generation windows, exhibiting vitrinite reflectance values that range between 0.73% and 1.20%. Kerogen to gas conversion has been simulated by the basin models and shows that between 10% and 15% of kerogen has transformed into gas during the late Miocene until the present‐day, consistent with the wet gas generation window (1.00–1.20 %Ro). Substantial gas exploration potential may exist in the fluvial deltaic Mukalla source rock system in the deeper structural units of the Qamar‐Jiza Basin, where the Mukalla Formation has reached the high maturity level of the gas generation window.
Oil generation and expulsion modeling of the syn-rift Salif oil-source rock in the Tihamah Basin, Yemeni Red Sea: Implications for shale oil exploration
Journal of African Earth Sciences, Jun 1, 2023
Advances on concrete strength properties after adding polypropylene fibers from health personal protective equipment (PPE) of COVID-19: Implication on waste management and sustainable environment
Physics And Chemistry Of The Earth, Parts A/b/c, Dec 1, 2022
Organic matter characteristics and gas generation prospect of the Late Cretaceous fluvial deltaic organic‐rich shale in the offshore Jiza‐Qamar Basin, Yemen based on organic geochemical, macerals composition, and biomarker results combined with 1‐D basin modelling
Geological Journal
Organic‐rich shale samples of the Late Cretaceous Mukalla Formation from the Al‐Fatk1 well in the... more Organic‐rich shale samples of the Late Cretaceous Mukalla Formation from the Al‐Fatk1 well in the offshore Jiza‐Qamar Basin, eastern Yemen, were examined using bulk organic geochemistry, microscopic examination, and biomarker measurements combined with 1‐D basin modelling, to evaluate the organic matter characteristics and their ability to generate gas. The studied Mukalla shale samples are characterized by their high organic matter content with total values of up to 14.50 wt.%, and contain mainly hydrogen‐poor Type III kerogen, indicating elevated gas generation potential. The hydrogen‐poor kerogen was also demonstrated by biomarker measurements combined with an abundance of land‐derived organic matter (i.e., vitrinite and inertinite) as established by microscopic investigation. The biomarkers of the studied organic‐rich shales were characterized by a high Pr/Ph ratio, abundance of C29 regular steranes, high C27 17α (H)‐22, 29, 30‐trisnorhopane compared with C27 18α (H)‐22, 29, 30‐...
Geochemical characteristics and genetic types of crude oils from a variety of geological reservoir rocks (Cretaceous–Palaeogene) in the Melut Basin, southern Sudan based on biomarker and carbon isotope composition
Geological Journal
The influence of carbonate textures and rock composition on durability cycles and geomechanical aspects of carbonate rocks
Acta Geotechnica
Seismic interpretation and structural modelling of Kupe field, Taranaki Basin, New Zealand
Arabian Journal of Geosciences, 2017
Kupe field is a gas condensate field located in the southern Taranaki Basin. In the present study... more Kupe field is a gas condensate field located in the southern Taranaki Basin. In the present study, 3D seismic and well log data sets were used to interpret and model Kupe structures. The primary objective of the study was to develop a structural model for the complete reservoir package in the Kupe field which composes of three horizons the North Cape, Farewell and Otaraoa formations. The three horizons were interpreted using time section and then converted into depth domain using the velocity model. The results demonstrate the successful establishment of the structural model to incorporate fault framework model, structural mechanics and geometric distributions of the structural features in the complex Southern Inversion Zone of Taranaki Basin. The reservoir package experienced extensional and contractional regimes during Late Cretaceous to Eocene and Eocene to Miocene epoch, respectively; as a consequence, both normal and reverse styles of faulting are observed. Normal faulting is more obvious in the sections taken from the northern part of the seismic cube while reverse faulting is more prominent in southern parts of the seismic cube. Reservoir package is compartmentalized by moderate- to high-angle (35°–87°) dip slip faults with NE–SW orientation. The proposed 3D structural model provides a unique combination of subseismic interpretations and a geostatistical modelling approach for understanding major fault mechanism, and it provides a significant platform for designing future drilling campaigns for Kupe field’s development.
Present study evaluates the Farewell Formation which is an important reservoir of the Kupe Field,... more Present study evaluates the Farewell Formation which is an important reservoir of the Kupe Field, located in the southern Taranaki Basin, New Zealand. It includes petrographical and well log analyses coupled with impact of diagenesis on the reservoir quality of Kupe Field. The petrographical study was carried out on Kupe South‒1, Kupe South‒2, Kupe South‒3, Kupe South‒4 and Kupe South‒5 wells by considering datasets and designing cross plots between different petrographical parameters e.g. grain size, porosity, permeability and the total cement concentrations etc. The study indicates that Farewell sandstone are ranging from Feldspathic arenite to Lithic arenite. Detrital mineralogy is dominated by quartz and feldspar. The total porosity within the Farewell Formation ranged between 10.29‒26.2% while the permeability ranged between 0.43‒1376 mD, thus showing good to very good reservoir quality. Petrophysical analyses from Kupe‒1, Kupe South‒2, Kupe South‒5 and Kupe South‒7 wells helpe...
Establishing site response-based micro-zonation by applying machine learning techniques on ambient noise data: a case study from Northern Potwar Region, Pakistan
Environmental Earth Sciences, 2021
Several major earthquakes have jolted Pakistan during the last 30 years, destroyed infrastructure... more Several major earthquakes have jolted Pakistan during the last 30 years, destroyed infrastructure and severe damage to the economy. Despite advancement in data sciences and its linkages with other domains, no such study has been conducted in Pakistan, which incorporates the application of machine learning techniques on ambient noise data. This study presents the application of machine learning techniques on the ambient noise data to establish the micro-zones within the urban settlements of northern Potwar region of Pakistan, based on the site response parameters and seismic vulnerability. The ambient noise data from 148 sites in the study area, are acquired, processed and interpreted. Different clustering techniques namely, K-mean, fuzzy c-means and hierarchical clustering have been applied to the interpreted ambient noise data set. Arc GIS maps of the study area have been developed by making use of the interpretation of the ambient noise data and the resulted clustering solutions. The results showed that the fundamental frequency f0 ranges between 0.5 and 15 Hz, the H/V spectral amplification factor ranges between 0.8 and 5.9; the soft sediment thickness ranges from 1.6 to 316 m, whereas, the soil vulnerability index is observed between 0.1 and 63. These site response parameters indicated that the study area is moderate to highly vulnerable to site amplification, and any seismic event can lead to catastrophe within the study area. The clustering techniques also detected three groups from the interpretation of the ambient noise data set by separating the locations according to their vulnerability due to site amplification. The quality of cluster solutions was evaluated using cluster validity indexes and the results of these techniques were compared. These results present the similarities and dissimilarities among different sites and indicate the sites which are geographically distant but have very similar vulnerability characteristics or vice versa. The Arc GIS tool showed the spatial distribution of site response parameters and three zones were established as zone 1, zone 2 and zone 3 with low, intermediate and high values, respectively. The spatial distribution maps showed that the northeastern and northwestern parts of the study area are more vulnerable to site amplification.
Geochemical Evaluation of Paleocene Source Rocks in the Kohat Sub-Basin, Pakistan
ACS omega, Mar 15, 2024
Sustainability
An apparent increase in average global temperature is evident globally, and India is no exception... more An apparent increase in average global temperature is evident globally, and India is no exception. With the recent decade (2011–2020) arguably being the warmest, significant challenges due to rapid climate change have gained attention. However, notable spatial-temporal changes, especially with regard to land surface temperature (LST), were observed during the COVID-19 pandemic lockdown period, when a comparatively cooler climate was experienced in many urban centers. Assessment of LST, crucial in many heat-balance, land use, and climate change models research studies, depicts the near-surface hotness of the Earth’s temperature at a given location. Thus, this study utilizes satellite remote-sensing data to investigate the spatial-temporal variations of LST pre and post-lockdown imposed during the COVID-19 outbreak. Unlike many existing research studies on the metropolitans of India, the study considers developing Indian cities, Ranchi and Dhanbad, as its study area. Accurate LST comp...
Harnessing Advanced Machine-Learning Algorithms for Optimized Data Conditioning and Petrophysical Analysis of Heterogeneous, Thin Reservoirs
Energy & Fuels
Tectonic geomorphology-based modeling reveals dominance of transpression in Taxila and the contiguous region in Pakistan: implications for seismic hazards
Modeling Earth Systems and Environment
Characteristics of records obtained at the 14 November 2021 Fin doublet events, Southern of Iran
Natural Hazards
Sustainability
Within the last three decades, twelve major earthquakes (Mw > 6.0) have jolted Pakistan and co... more Within the last three decades, twelve major earthquakes (Mw > 6.0) have jolted Pakistan and contributed to a heavy death toll and an economic loss of billions of dollars, which is immense for any underdeveloped country. Despite the generalized description of seismic hazards in various regions of Pakistan, densely populated cities still require a detailed and integrated vulnerability analysis to overcome the impact of a significant earthquake. This study aims to integrate seismic hazard assessment schemes to understand the vulnerability of Attock city against an earthquake. It initially evaluates the threat from an earthquake due to tectonic activity in the region, splits the region (about 200 km radius) into six seismic zones and uses area source parameters. The ground motion prediction equations compatible with the study area’s seismotectonic environment are also used in this study. Peak horizontal ground acceleration (PGA) and 5% damped spectral acceleration are critical featur...
Characterization of Lower Cretaceous organic-rich shales from the Kom Ombo Basin, Egypt: Implications for conventional oil generation
Journal of Asian Earth Sciences
Overview of the Late Jurassic Madbi-Sab'atayn petroleum system in the Marib Concession, northwestern Sab'atayn Basin (Yemen): hydrocarbon from source to trapping
Arabian Journal of Geosciences
The Marib Concession in the northwestern Sab'atayn Basin is the most conventional petroleum e... more The Marib Concession in the northwestern Sab'atayn Basin is the most conventional petroleum exploration activities. Although the Marib Concession is an established hydrocarbon province due to the accumulation of Mesozoic sediments some of which act as good source and reservoir rocks, still there is a gap in developing a better understanding the petroleum system of the region. This study identifies the characterization and effectiveness of the Late Jurassic Madbi-Sab'atayn petroleum system for the Marib Concession and reveals Kimmeridgian-Tithonian Madbi Shales and Tithonian Alif sandstones as the source and reservoir rocks, respectively. To analyze its source rock and reservoir characteristics, model the generation and migration histories, and outline the entrapment style and effective seals of the petroleum system, integrated geochemical and geological modeling techniques were used. The shale intervals within the Lam and Meem Members of the Late Jurassic Madbi Formation are considered to be the main source rocks in the Marib Concession and characterized by fairly high total organic content (TOC%) of up to 9.0%, whereas the hydrogen index (HI) ranges from 50 to 595 mg HC/g TOC, indicating that the kerogen types contained within these shales are mainly Type II and mixed Type II/III, with a significant amount of Type III. A wide range of vitrinite reflectance values (0.50–2.61 R 0 %) is indicative of the Madbi shales maturity and illustrates that the Madbi source rock is currently within the peak oil to gas window. Geochemical oil-source rock correlation analyses propose that the hydrocarbon’s regional distribution in the Marib Concession was mainly derived from the Kimmeridgian age Madbi shales. The reservoir units are discovered in various stratigraphic sequences of Late Jurassic period, including Alif and Seen Members of the Sab'atayn Formation as well as Lam Member of the Madbi Formation. Still, the sandstones of the Alif Member of the Sab'atayn Formation acting as the primary productive reservoir within the studied Marib Concession. The best reservoir quality of the Alif sandstones is characterized by high porosity and permeability values up to 33% and 10,000 mD, respectively. The Tithonian salt and shales within the Safir Member of the Sab'atayn Formation represent good seal rocks that underlie the hydrocarbon reservoir rocks in Marib Concession. The main tectonic development within the Marib Concession in the northwestern Sab'atayn Basin is occurred as Late Jurassic to Early Cretaceous rifting during the Gondwana supercontinent and separation of Africa–Arabia and Madagascar–India and played a vital role in designing the petroleum play. Structural features such as horst, tilted fault blocks, and few stratigraphic traps are the main trapping mechanisms resulting from the Late Jurassic to Early Cretaceous rifting episodes. Both burial and thermal basin models reveal that the hydrocarbon generation within the Madbi active pod was initiated during the Late Jurassic period. The highest rate of hydrocarbon expulsion was attained in the Late Cretaceous time. In contrast, the migration of hydrocarbons continued since the Early Cretaceous period, most likely during the Hauterivian-Barremian ages. The hydrocarbon from the Madbi source rock, reached the trapping site via vertical migration paths through the faults due to an episode of rift during the Early Cretaceous period. This study provides important petroleum system elements for evaluating hydrocarbon resources in the Marib Concession of the northwestern Sab'atayn Basin, which is beneficial for further and exploration and better resources exploitation.
Energies
Drilling fluids with subtle filtration and rheological characteristics are essential to optimize ... more Drilling fluids with subtle filtration and rheological characteristics are essential to optimize the functioning of oil and gas well drills. The Early Miocene Murree Formation in the Kohat Basin of Pakistan is generally referred to as the Murree Clays. When mixed with water-base drilling mud, ultra-fine particles of the Murree Formation tend to eradicate default fluid rheological properties and result in wellbore instabilities during drilling in that area. To obtain the optimized mud to deliver the drilling operation efficiently, we aimed to mitigate the impact of Murree clay on the drilling mud. We analyzed the drilling mud to observe the effects of the mud additive on clays on the basis of the samples from the Murree Clays. On the basis of the experimental tests, we observed that the rheological properties of mud significantly improved in the presence of KCl. KCl prevented the smectite group swelling inclinations and reduced rheological values to 25%, 33.3%, 48.6%, and 65.2%. The ...
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Papers by S M TALHA QADRI