Badley Ashton’s world class expertise has extensive reach. Our experience includes working with major oil & gas companies in Africa, North America, South America, South East Asia, Australia, Europe, Northern Eurasia, Malaysia, and the Middle East.
Detailed core description of multiple wells within a giant gas field in the United Arab Emirates (UAE) has enhanced the understanding of the depositional make-up and possible controls on depositional style for the Arab Formation.
A stratigraphic and structural summary of 5 km of Upper Devonian strata of south-west Beara, part of the Munster Basin, south-west Cork is presented. Five formations are recognized on the basis of lithofacies geometries and associations. ...
The behaviour and the development of the Brent Group in the Northern North Sea is documented by cross-sections and paleogeographic maps. Although this work is based on a previously published Norsk Hydro study, we present ...
- Catherine Breislin and Laura Galluccio
The controls on the reservoir quality variations of the Habshan Formation located in the north-west of onshore Abu Dhabi, are addressed in this study through an integrated sedimentological, petrographical and reservoir quality assessment. This evaluation ...
- Mike Ashton
It is well known that the coherence attribute computed from seismic data is a powerful tool for imaging discontinuities, including faults and fractures. Despite this, analysis of coherence data is rarely integrated in interpretation workflows. ...
The main objectives of this study were to better understand the distribution, orientation and type of channel bodies within successive layers of the Triassic Argilo-Grèseux inférieur (TAGI) reservoir in the Ourhoud field through the integration of core and Ultrasonic Borehole Image (UBI) datasets from 37 wells.
This study shows that constructing a sedimentological framework for the Asl and Hawara Members can assist in understanding reservoir geometries that can lead to a predictive tool for future reservoir potential.
This study uses over 30 UBI datasets calibrated with 22 fully cored wells to assess the dominant fluvial facies and their distribution within a refined reservoir zonation in order to constrain reservoir architecture and modelling scenarios.
This study uses data from over 120 cored wells to refine the stratigraphic and depositional model, and to determine the reservoir architecture and heterogeneities within the field.
- Andrea James
Sedimentological, diagenetic and palynological description of the Carboniferous section (RKF Sands) was carried out on one RKF well. This study allows an improved understanding of the depositional environments and the architecture of the reservoir, along ...
- Boris Kostic
Alaska’s North Slope is a world-class petroleum basin with some of the largest producing fields in North America. What is not widely known is the vast resource of heavy oil in shallow sands overlying ...
- Boris Kostic
Fahud Field is a giant fractured carbonate reservoir in the Sultanate of Oman. It is contained in the Natih Formation, a 450m thick section of Albian to Turonian high porosity, low permeability shallow water carbonates. ...
- Boris Kostic
The Zubair reservoir is an Albian siliciclastic reservoir on production for the last six decades. Cumulative production indicates a higher oil recovery factor than expected. An integrated study involving sequence stratigraphy, sedimentology, biostratigraphy, petrophysics and ...
- Boris Kostic
Introduction • Rumaila location and Redevelopment Plan objectives • Early Cretaceous stratigraphic, palaeogeographic and palaeoclimatic contextDatabase and workflow • Core and image log coverage and interpretation workflow • ...
- Meriem Bertouche and Andrea James
Correlation and prediction of reservoir quality variability/heterogeneity within shallow carbonate ramp deposits of the Arab Formation has previously proved challenging. This study presents the results of an integrated reservoir characterisation (including sedimentology, reservoir quality ...
- Meriem Bertouche and Mike Ashton
The problemTraditional core logging cannot always distinguish in situ from remobilised mudrocks due to the absence of diagnostic criteria, particularly from single core. Image logs generally can help to differentiate the ...
- Boris Kostic
For a holistic characterisation of fine-grained unconventional reservoirs, our integrated approach utilises coherent, reproducible datasets and refined work practices carried out within a comprehensive quality management system. A typical reservoir characterisation includes integration of sedimentological, ...
- Neil Bishop, Jon Gant, Meriem Bertouche and Andrea James
Correlation and prediction of facies and reservoir quality variability/heterogeneity within shallow carbonate ramp deposits of the Arab Formation in an Abu Dhabi offshore field has previously proved challenging. This study, focuses on the results ...
- Meriem Bertouche and Andrea James
This field-scale study presents the results of integrated sedimentology and reservoir quality assessment of the Arab Formation Members A to D, offshore Abu Dhabi. The reservoir quality evaluation based on conventional core analyses data, thin-sections ...
- Boris Kostic
The Cretaceous (Albian) Upper Burgan Formation has been on production for circa 60 years in the Raudhatain and Sabiriyah fields in north Kuwait and significant resources remain. Key to an optimised development of this important reservoir ...
- Rebecca Smith
The Al Khlata to Lower Gharif succession of Oman records a transition from deposition in a glacially-influenced setting through to deglaciation at the end of the Permo-Carboniferous ice age and the development of fully ...
- Adrian Neal
Computer Axial Tomography (CAT or CT scanning), is an X-ray based technique first developed in the late 1960s for medical imaging purposes. It has increasingly found applications in the earth sciences due to its ability ...
- Boris Kostic and Nicolas Foote
The Greater Burgan Field in South Kuwait is the world's largest siliciclastic reservoir with producing zones from a series of Cretaceous reservoirs including the Burgan and Wara Formations. Key to an optimised development of these ...
- Boris Kotsic and Nicolas Foote
Resistivity image logs are high-resolution tools that can help to unravel the depositional and structural organisation in a wellbore. They provide a particularly powerful dataset when calibrated against core, maximising their benefit for reservoir characterisation. ...
- Meriem Bertouche
The Late Albian Mauddud Formation of North Kuwait is composed of inner ramp carbonates and deltaic clastics. It hosts prolific hydrocarbon reserves in Kuwait and across the Arabian Gulf region where the reservoirs are typically ...
- Boris Kostic
This paper summarises the results of an intense reservoir appraisal programme that was conducted within a sour gas reservoir, onshore UAE, in order to determine the controls on porosity presence, distribution and effectiveness. This multiwell ...
- Meriem Bertouche
The Lower Arab D Member (Kimmeridgian) in onshore UAE is typically characterised by a thick succession of homogeneous mudstones with local cm-scale interbedded bivalve-rich floatstones, which are thought to have been deposited in a low-energy ...
- Rebecca Smith, Meriem Bertouche and Andrea James
The Trias Argilo-Gréseux Inférieur (TAGI) Formation of the Berkine Basin, Algeria consists of a c.100m thick succession of laterally extensive alluvial sediments deposited within a series of NE-opening grabens, associated with the ...
- Boris Kostic, Nicolas Foote and Meriem Bertouche
Resistivity image logs are high-resolution tools that can help to unravel the depositional and structural organisation in a wellbore. They provide a particularly powerful dataset when calibrated against core, maximising their benefit for reservoir ...
- Laura Galluccio
The assessment of a Petroleum System includes several steps, which comprise: detailed evaluation ofsource rock, charge history, trap, seal and reservoir. As a result, a multi-scale and multi-disciplinary approach was necessary to obtain a final ...
- Meriem Bertouche
Throughout the UAE and the wider region, several broadly E-W orientated structural lineaments are observed on seismic within the Cretaceous successions and are described as strike-slip faults. However, in the studied field, these features have ...
- Laura Galluccio
Two of the most important Jurassic reservoir units in offshore Abu Dhabi are characterised by intertidal to shallow marine carbonates that mainly comprise mud-dominated microbial bindstones (typically pervasively dolomitised) and peloidal/oolitic packstones and grainstones ...
- Anthony Tendil, Laura Galluccio and Catherine Breislin
The Lower Cretaceous Lekhwair Formation is one of the most prolific oil reservoirs in onshore and offshore UAE, yet the available literature on this interval remains limited. Based on a recent study carried out in ...
- Catherine Breislin and Laura Galluccio
Understanding reservoir architecture is key to comprehend the distribution of reservoir quality when evaluating a field's prospectivity. Renewed interest in the tight, gas-rich Middle Miocene anhydrite intervals (Anh-1, Anh-2, Anh-3, Anh-4 and Anh-6) by ADNOC ...
- Nick Foote, Daniel Clay and Meriem Bertouche
The Lower Cretaceous Mauddud Formation in North Kuwait is a limestone-dominated transgressive-regressive sequence of about 380ft (116m) thick. As a key reservoir in North Kuwait, it has been extensively studied with permeability heterogeneity caused by ...
Two detailed sections through 4 km of distal alluvium of the Upper Devonian Old Red Sandstone in the Munster Basin, southern Ireland, display a limited number of lithofacies. There is little ordering of these lithofacies on ...
Owing to the maturity of exploration in the North Sea Basin, reservoir geology will increasingly focus on the exploitation of smaller and technically more demanding hydrocarbon accumulations and the need to maximize reserves from the ...
Geological mapping and description of the Devonian and Silurian bedrock intervals within the Freeburg 7-1/2' Quadrangle around Freeburg and Kreamer, Snyder County, Pennsylvania.MacLachlan, D. B, Hoskins, D, M and Payne, ...
Ultrasonic borehole image tools are generally considered to be of limited value as an interpretative sedimentological tool because thick packages of a single lithology have similar acoustic properties resulting in resolution of very little diagnostic ...
Two detailed sections through 4 km of distal alluvium of the Upper Devonian Old Red Sandstone in the Munster Basin, southern Ireland, display a limited number of lithofacies. There is little ordering of these lithofacies on ...
Upper Ordovician syn-glacial deposits form a gas reservoir at the Tiguentourine field, Illizi Basin, Algeria. The reservoir geology of these glacial deposits has been investigated with the objective of understanding the widely varying thickness of ...
This paper investigates a Quaternary Gilbert-type gravel delta that was formed in an ice-marginal environment at the end of the last glacial period.Outcrop, sediment core and ground-penetrating radar (GPR) studies reveal the ...
The behaviour and the development of the Brent Group in the Northern North Sea is documented by cross-sections and paleogeographic maps. Although this work is based on a previously published Norsk Hydro study, we present ...
Owing to the maturity of exploration in the North Sea Basin, reservoir geology will increasingly focus on the exploitation of smaller and technically more demanding hydrocarbon accumulations and the need to maximize reserves from the ...
We performed field experiments at a well-studied aquifer test site to evaluate the geophysical method of seismic cross-hole tomography for high-resolution aquifer characterization. We address the challenge of finding meaningful relationships between seismic velocity and ...
Geological mapping and description of the Devonian and Silurian bedrock intervals within the Freeburg 7-1/2' Quadrangle around Freeburg and Kreamer, Snyder County, Pennsylvania.MacLachlan, D. B, Hoskins, D, M and Payne, ...
Sedimentological outcrop analysis and sub-surface ground-penetrating radar (GPR) surveys are combined to characterize the three-dimensional sedimentary architecture of Quaternary coarse-grained fluvial deposits in the Neckar Valley (SW Germany). Two units characterized by different architectural styles ...
A stratigraphic and structural summary of 5 km of Upper Devonian strata of south-west Beara, part of the Munster Basin, south-west Cork is presented. Five formations are recognized on the basis of lithofacies geometries and associations. ...
Quaternary sands and gravels form important, yet often highly heterogeneous economic deposits. Detailed 3-D analysis of the sedimentary structure and stratigraphy of these deposits allows for an accurate estimation of exploitable material. This paper presents ...
A multidisciplinary study of the dolomitized bodies present among the Late Triassic to Late Cretaceous carbonate deposits of the Monti Lattari belt (Southern Apennines of Italy) compares the different dolomitization styles present within this succession ...
Upper Ordovician syn-glacial deposits form a gas reservoir at the Tiguentourine field, Illizi Basin, Algeria. The reservoir geology of these glacial deposits has been investigated with the objective of understanding the widely varying thickness of ...
At the field scale (m's to 100's m) it is often difficult to define the true three-dimensional form of depositional units or facies within sediments or sedimentary rocks, due to inherent spatial bias in traditional ...
Ultrasonic borehole image tools are generally considered to be of limited value as an interpretative sedimentological tool because thick packages of a single lithology have similar acoustic properties resulting in resolution of very little diagnostic ...
This paper investigates a Quaternary Gilbert-type gravel delta that was formed in an ice-marginal environment at the end of the last glacial period.Outcrop, sediment core and ground-penetrating radar (GPR) studies reveal the ...
Alaska’s North Slope is a world-class petroleum basin, with some of the largest producing fields in North America. What is not widely known is that the North Slope also holds a vast resource of ...
We performed field experiments at a well-studied aquifer test site to evaluate the geophysical method of seismic cross-hole tomography for high-resolution aquifer characterization. We address the challenge of finding meaningful relationships between seismic velocity and ...
Thick successions of Cretaceous carbonates in the southern Apennines of Italy are of great economic interest since they host important aquifers and huge hydrocarbon accumulations. The reservoir of the Val d’Agri and Tempa Rossa ...
Sedimentological outcrop analysis and sub-surface ground-penetrating radar (GPR) surveys are combined to characterize the three-dimensional sedimentary architecture of Quaternary coarse-grained fluvial deposits in the Neckar Valley (SW Germany). Two units characterized by different architectural styles ...
Petrographic, petrophysical and fracture analyses were carried out on middle Cretaceous platform carbonates of the southern Apennines (Italy) that represent an outcrop analogue of the Val d’Agri and Tempa Rossa reservoirs of the Basilicata ...
Quaternary sands and gravels form important, yet often highly heterogeneous economic deposits. Detailed 3-D analysis of the sedimentary structure and stratigraphy of these deposits allows for an accurate estimation of exploitable material. This paper presents ...
Paralic reservoirs reflect a range of clastic depositional environments developed along or near coastlines, including deltas, shoreline–shelf systems and estuaries. Such reservoirs provide the backbone of production in many mature basins around the world, ...
In the current cost-constrained environment for hydrocarbon exploitation, increasing emphasis is being placed on robust subsurface description and a clear understanding of the range of uncertainty associated with reservoir models. Structural heterogeneity, particularly at the ...
A multidisciplinary study of the dolomitized bodies present among the Late Triassic to Late Cretaceous carbonate deposits of the Monti Lattari belt (Southern Apennines of Italy) compares the different dolomitization styles present within this succession ...
The Lower Cretaceous (Barremian–Aptian) Main Pay Member of the Zubair Formation is the main producing reservoir in the supergiant Rumaila oil field in southeast Iraq, one of the world’s largest oil fields. While ...
At the field scale (m's to 100's m) it is often difficult to define the true three-dimensional form of depositional units or facies within sediments or sedimentary rocks, due to inherent spatial bias in traditional ...
The Lower Cretaceous (Barremian) Zubair Formation in North Kuwait represents a major clastic pulse above the Ratawi Formation. Depositional environments and the sequence stratigraphic framework play a key part in the reservoir development and production ...
Alaska’s North Slope is a world-class petroleum basin, with some of the largest producing fields in North America. What is not widely known is that the North Slope also holds a vast resource of ...
With the increasing interest in the development of shale reservoirs in Europe, cross-border geoscience co-operation is undoubtedly pivotal in understanding the laterally extensive and vastly underexplored unconventional plays in and around the North Sea. The ...
Thick successions of Cretaceous carbonates in the southern Apennines of Italy are of great economic interest since they host important aquifers and huge hydrocarbon accumulations. The reservoir of the Val d’Agri and Tempa Rossa ...
Fault-controlled dolomitization has been documented in Lower Carboniferous (Viséan) platform carbonates at various localities in the Pennine Basin and North Wales. The largest of these dolomite bodies (approx. 60 km2) occurs on the Derbyshire Platform, ...
Paralic reservoirs reflect a range of clastic depositional environments developed along or near coastlines, including deltas, shoreline–shelf systems and estuaries. Such reservoirs provide the backbone of production in many mature basins around the world, ...
The Subalpine Urgonian platform provides seismic-scale outcrops of interest to constrain the depositional organisation of Lower Cretaceous carbonate systems. Revising the biostratigraphy using ammonites, rudists, calcareous algae and orbitolinids and establishing regional stratigraphic correlations between ...
Core has traditionally played a key role in the characterisation of conventional and unconventional hydrocarbon reservoirs, from exploration to mature production, because it provides the only means to observe and make measurements on actual reservoir ...
Petrographic, petrophysical and fracture analyses were carried out on middle Cretaceous platform carbonates of the southern Apennines (Italy) that represent an outcrop analogue of the Val d’Agri and Tempa Rossa reservoirs of the Basilicata ...
In the current cost-constrained environment for hydrocarbon exploitation, increasing emphasis is being placed on robust subsurface description and a clear understanding of the range of uncertainty associated with reservoir models. Structural heterogeneity, particularly at the ...
The Lower Cretaceous (Barremian–Aptian) Main Pay Member of the Zubair Formation is the main producing reservoir in the supergiant Rumaila oil field in southeast Iraq, one of the world’s largest oil fields. While ...
The Lower Cretaceous (Barremian) Zubair Formation in North Kuwait represents a major clastic pulse above the Ratawi Formation. Depositional environments and the sequence stratigraphic framework play a key part in the reservoir development and production ...
With the increasing interest in the development of shale reservoirs in Europe, cross-border geoscience co-operation is undoubtedly pivotal in understanding the laterally extensive and vastly underexplored unconventional plays in and around the North Sea. The ...
Fault-controlled dolomitization has been documented in Lower Carboniferous (Viséan) platform carbonates at various localities in the Pennine Basin and North Wales. The largest of these dolomite bodies (approx. 60 km2) occurs on the Derbyshire Platform, ...
Core has traditionally played a key role in the characterisation of conventional and unconventional hydrocarbon reservoirs, from exploration to mature production, because it provides the only means to observe and make measurements on actual reservoir ...
The Subalpine Urgonian platform provides seismic-scale outcrops of interest to constrain the depositional organisation of Lower Cretaceous carbonate systems. Revising the biostratigraphy using ammonites, rudists, calcareous algae and orbitolinids and establishing regional stratigraphic correlations between ...
Frau, C, Tendil, A. J-B, Masse, J-P, Richet, R, Borgomano, J. R, Lanteame, C. and Robert, E. (2021) Revised biostratigraphy and regional correlations of the Urgonian southern Vercors carbonate platform, southeast France. Cretaceous Research 124:104773
This study uses data from 4 cored wells to evaluate the controls on reservoir quality, and integrate these results with the sedimentological framework in order better understand reservoir quality distribution within the Zubair Formation.
