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University of the Western Cape
1.
Kamgang, Thierry T.
Petro physical evaluation of four wells within Cretaceous gas-bearing sandstone reservoirs, In block 4 and 5 orange basin, South Africa.
Degree: 2013, University of the Western Cape
URL: http://hdl.handle.net/11394/4259
► Petrophysical evaluation of four wells within Cretaceous gas-bearing sandstone reservoirs in blocks 4 and 5 Orange Basin, South Africa. Thierry Kamgang The present research work…
(more)
▼ Petrophysical evaluation of four wells within Cretaceous gas-bearing sandstone
reservoirs in blocks 4 and 5 Orange Basin, South Africa.
Thierry Kamgang
The present research work evaluates the petrophysical characteristics of the Cretaceous gasbearing
sandstone units within Blocks 4 and 5 offshore South Africa. Data used to carry out this
study include: wireline logs (LAS format), base maps, well completion reports, petrography
reports, conventional core analysis report and tabulated interpretative age reports from four
wells (O-A1, A-N1, P-A1 and P-F1). The zones of interest range between 1410.0m-4100.3m
depending on the position of the wells.
The research work is carried out in two phases:
The first phase corresponds to the interpretation of reservoir lithologies based on wireline logs.
This consists of evaluating the type of rocks (clean or tight sandstones) forming the reservoir
intervals and their distribution in order to quantify gross zones, by relating the behavior of
wireline logs signature based on horizontal routine. Extensively, a vertical routine is used to
estimate their distribution by correlating the gamma-ray logs of the corresponding wells, but
also to identify their depositional environments (shallow to deep marine).Sedlog software is
used to digitize the results.
The second phase is conducted with the help of Interactive Petrophysics (version 4) software,
and results to the evaluation of eight petrophysical parameters range as follow: effective
porosity (4.3% - 25.4%), bulk volume of water (2.7% – 31.8%), irreducible water saturation
(0.2%-8.8%), hydrocarbon saturation (9.9% - 43.9%), predicted permeability (0.09mD –
1.60mD), volume of shale (8.4% - 33.6%), porosity (5.5% - 26.2%) and water saturation (56.1% -
ii
90.1%). Three predefined petrophysical properties (volume of shale, porosity and water
saturation)are used for reservoir characterization. The volume of shale is estimated in all the
wells using corrected Steiber method. The porosity is determined from the density logs using
the appropriate equations in wells O-A1 and P-A1, while sonic model is applied in well A-N1 and
neutron-density relationship in well P-F1. Formation water resistivity (Rw) is determined
through the following equation: Rw = (Rmf × Rt) / Rxo, and water saturation is calculated based
on Simandoux relation. Furthermore, a predicted permeability function is obtained from the
crossplot of core porosity against core permeability, and it results match best with the core
permeability of well O-A1. This equation is used to predict the permeability in the other wells.
The results obtained reveal that average volumes of shale decrease from the west of the field
towards the east; while average porosities and water saturations increase from the south-west
through the east despite the decreasing average water saturation in well P-A1.
A corroboration of reference physical properties selected for reservoir characterization, with
predefined cut-off values result to no net pay zones identified within…
Subjects/Keywords: Orange Basin;
Petrophysical analysis;
Water saturation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
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to Zotero / EndNote / Reference
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APA (6th Edition):
Kamgang, T. T. (2013). Petro physical evaluation of four wells within Cretaceous gas-bearing sandstone reservoirs, In block 4 and 5 orange basin, South Africa.
(Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/4259
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kamgang, Thierry T. “Petro physical evaluation of four wells within Cretaceous gas-bearing sandstone reservoirs, In block 4 and 5 orange basin, South Africa.
” 2013. Thesis, University of the Western Cape. Accessed December 12, 2019.
http://hdl.handle.net/11394/4259.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kamgang, Thierry T. “Petro physical evaluation of four wells within Cretaceous gas-bearing sandstone reservoirs, In block 4 and 5 orange basin, South Africa.
” 2013. Web. 12 Dec 2019.
Vancouver:
Kamgang TT. Petro physical evaluation of four wells within Cretaceous gas-bearing sandstone reservoirs, In block 4 and 5 orange basin, South Africa.
[Internet] [Thesis]. University of the Western Cape; 2013. [cited 2019 Dec 12].
Available from: http://hdl.handle.net/11394/4259.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kamgang TT. Petro physical evaluation of four wells within Cretaceous gas-bearing sandstone reservoirs, In block 4 and 5 orange basin, South Africa.
[Thesis]. University of the Western Cape; 2013. Available from: http://hdl.handle.net/11394/4259
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Houston
2.
Dongel, Eren 1986-.
AN INTEGRATION OF SEQUENCE STRATIGRAPHIC AND PETROPHYSICAL ANALYSIS IN THE BAKKEN FORMATION, NORTH DAKOTA.
Degree: Earth and Atmospheric Sciences, Department of, 2014, University of Houston
URL: http://hdl.handle.net/10657/1467
► A decrease in the discovery of reserves in conventional reservoirs has led to a focus on unconventional reservoirs. New techniques, such as hydraulic fracturing, provide…
(more)
▼ A decrease in the discovery of reserves in conventional reservoirs has led to a focus on unconventional reservoirs. New techniques, such as hydraulic fracturing, provide better production conditions and allow the development of new reservoirs. The Bakken unconventional play is one of the most important oil plays since it has the largest crude oil accumulation in the United States.
During the study, 86 wells with the digitized format (log ASCII standard) were used for depositional environment
analysis and
petrophysical interpretation of the Bakken Formation in the northwest part of North Dakota. The Bakken Formation is subdivided into six facies which show diversity in thicknesses over the study area. The thicker parts of the Bakken Formation correlate to higher oil production.
Petrophysical and elastic properties of the Bakken Formation was examined in terms of their effects on productivity. The best calculation methods for these properties such as water saturation, effective porosity, brittleness, were tested according to the best match of log data calculations and core data results. Log data calculations show a harmonious trend with the core data.
It has been questioned as to whether brittleness can, in and of itself, be a key indicator of the productivity of a well. Brittleness, an important factor in hydraulic fracturing, was calculated by using log and mineralogy data. These results were used to estimate how the facies would respond to hydraulic fracturing, and were compared with
petrophysical calculations for the determination of possible horizontal targets. High brittle conditions allow the rock to be fractured resulting in a smoother production process.
The brittleness
analysis shows that an increase in brittleness also results in an increase of productivity. Even though there were some areas with high resistivity and low water saturation conditions, which are key points for oil production, due to unsufficient brittleness, these areas are not ideal for drilling. Therefore, the brittleness has been concluded to be a key factor of how productive a well can and will be.
Advisors/Committee Members: Wellner, Julia S. (advisor), Stewart, Robert R. (committee member), Henning, Alison (committee member).
Subjects/Keywords: The Bakken Formation; Petrophysical Analysis; Sequence Stratigraphy; Brittleness
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dongel, E. 1. (2014). AN INTEGRATION OF SEQUENCE STRATIGRAPHIC AND PETROPHYSICAL ANALYSIS IN THE BAKKEN FORMATION, NORTH DAKOTA. (Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/1467
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Dongel, Eren 1986-. “AN INTEGRATION OF SEQUENCE STRATIGRAPHIC AND PETROPHYSICAL ANALYSIS IN THE BAKKEN FORMATION, NORTH DAKOTA.” 2014. Thesis, University of Houston. Accessed December 12, 2019.
http://hdl.handle.net/10657/1467.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Dongel, Eren 1986-. “AN INTEGRATION OF SEQUENCE STRATIGRAPHIC AND PETROPHYSICAL ANALYSIS IN THE BAKKEN FORMATION, NORTH DAKOTA.” 2014. Web. 12 Dec 2019.
Vancouver:
Dongel E1. AN INTEGRATION OF SEQUENCE STRATIGRAPHIC AND PETROPHYSICAL ANALYSIS IN THE BAKKEN FORMATION, NORTH DAKOTA. [Internet] [Thesis]. University of Houston; 2014. [cited 2019 Dec 12].
Available from: http://hdl.handle.net/10657/1467.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Dongel E1. AN INTEGRATION OF SEQUENCE STRATIGRAPHIC AND PETROPHYSICAL ANALYSIS IN THE BAKKEN FORMATION, NORTH DAKOTA. [Thesis]. University of Houston; 2014. Available from: http://hdl.handle.net/10657/1467
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape
3.
Williams, Adrian.
Reservoir Characterization of well A-F1, Block 1, Orange Basin, South Africa
.
Degree: 2018, University of the Western Cape
URL: http://hdl.handle.net/11394/6364
► The Orange basin is relatively underexplored with 1 well per every 4000km2 with only the Ububhesi gas field discovery. Block 1 is largely underexplored with…
(more)
▼ The Orange basin is relatively underexplored with 1 well per every 4000km2 with only the
Ububhesi gas field discovery. Block 1 is largely underexplored with only 3 wells drilled in the
entire block and only well A?F1 inside the 1500km2 3?D seismic data cube, acquired in 2009.
This study is a reservoir characterization of well A?F1, utilising the acquired 3?D seismic data
and re?analysing and up scaling the well logs to create a static model to display
petrophysical properties essential for reservoir characterization.
For horizon 14Ht1, four reservoir zones were identified, petro?physically characterized and
modelled using the up scaled logs. The overall reservoir displayed average volume of shale
at 24%, good porosity values between 9.8% to 15.3% and permeability between 2.3mD to
9.5mD. However, high water saturation overall which exceeds 50% as per the water
saturation model, results in water saturated sandstones with minor hydrocarbon shows and
an uneconomical reservoir.
Advisors/Committee Members: Opuwari, Mimonitu (advisor).
Subjects/Keywords: Orange Basin; Hydrocarbon; Reservoir characterization; Seismic interpretation; Petrophysical analysis; Up scaling; Static modelling; Property modelling
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Williams, A. (2018). Reservoir Characterization of well A-F1, Block 1, Orange Basin, South Africa
. (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/6364
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Williams, Adrian. “Reservoir Characterization of well A-F1, Block 1, Orange Basin, South Africa
.” 2018. Thesis, University of the Western Cape. Accessed December 12, 2019.
http://hdl.handle.net/11394/6364.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Williams, Adrian. “Reservoir Characterization of well A-F1, Block 1, Orange Basin, South Africa
.” 2018. Web. 12 Dec 2019.
Vancouver:
Williams A. Reservoir Characterization of well A-F1, Block 1, Orange Basin, South Africa
. [Internet] [Thesis]. University of the Western Cape; 2018. [cited 2019 Dec 12].
Available from: http://hdl.handle.net/11394/6364.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Williams A. Reservoir Characterization of well A-F1, Block 1, Orange Basin, South Africa
. [Thesis]. University of the Western Cape; 2018. Available from: http://hdl.handle.net/11394/6364
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan Technological University
4.
Karaman, Fatmanur.
PETROPHYSICAL ANALYSIS AND ROCK PHYSICS OF THE MOKI FORMATION, NEW ZEALAND.
Degree: MS, Department of Geological and Mining Engineering and Sciences, 2016, Michigan Technological University
URL: http://digitalcommons.mtu.edu/etdr/178
► Understanding and applying rock physics fundamentals are essential steps to predict reservoir behavior from geophysical studies. In this work, petrophysical analysis was performed for…
(more)
▼ Understanding and applying rock physics fundamentals are essential steps to predict reservoir behavior from geophysical studies. In this work,
petrophysical analysis was performed for a formation in two wells offshore of New Zealand. The main objectives are to identify the physical properties of the rocks, such as lithology, velocity, and water saturation; to compare the results of two Gassmann fluid substitution approaches in shaly sands; and to study the dry bulk modulus trend with respect to changes in porosity and depth.
First, sandstone bearing zones that are considered as a potential reservoir were selected in the Moki formation in two wells. A routine
petrophysical analysis, including mineral identification and crossplots, was applied to identify lithology, porosity, and water saturation. In addition, some empirical relations were performed to predict seismic velocities and compared with the logged values.
Second, using parameters obtained from the
petrophysical analysis, two different Gassmann fluid substitution approaches were employed to predict the acoustic response due to different fluids in the pore spaces. Besides new velocity behaviors of the formation, Gassmann fluid substitution provides us different seismic properties of the rock. The dry bulk modulus was computed as part of that
analysis, and was used to compare with changes in porosity and depth while considering variations in shaliness. Porosity values tended to decrease with increasing shaliness and depth. On the other hand, dry bulk modulus trend decreases with increasing effective porosity and it raises with increasing depth. Thus, it is concluded that dry bulk modulus shows inverse proportion with increasing effective porosity, but it shows direct proportion with increasing depth in cemented rocks.
Advisors/Committee Members: Wayne D. Pennington.
Subjects/Keywords: Petrophysical Analysis; Rock Physics; Log Analysis; Mineral Identification; Velocity; Water Saturation; Gassmann Fluid Substitution; Dry Bulk Modulus; Porosity; Shaly Formation; Geophysics and Seismology; Oil, Gas, and Energy
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Karaman, F. (2016). PETROPHYSICAL ANALYSIS AND ROCK PHYSICS OF THE MOKI FORMATION, NEW ZEALAND. (Masters Thesis). Michigan Technological University. Retrieved from http://digitalcommons.mtu.edu/etdr/178
Chicago Manual of Style (16th Edition):
Karaman, Fatmanur. “PETROPHYSICAL ANALYSIS AND ROCK PHYSICS OF THE MOKI FORMATION, NEW ZEALAND.” 2016. Masters Thesis, Michigan Technological University. Accessed December 12, 2019.
http://digitalcommons.mtu.edu/etdr/178.
MLA Handbook (7th Edition):
Karaman, Fatmanur. “PETROPHYSICAL ANALYSIS AND ROCK PHYSICS OF THE MOKI FORMATION, NEW ZEALAND.” 2016. Web. 12 Dec 2019.
Vancouver:
Karaman F. PETROPHYSICAL ANALYSIS AND ROCK PHYSICS OF THE MOKI FORMATION, NEW ZEALAND. [Internet] [Masters thesis]. Michigan Technological University; 2016. [cited 2019 Dec 12].
Available from: http://digitalcommons.mtu.edu/etdr/178.
Council of Science Editors:
Karaman F. PETROPHYSICAL ANALYSIS AND ROCK PHYSICS OF THE MOKI FORMATION, NEW ZEALAND. [Masters Thesis]. Michigan Technological University; 2016. Available from: http://digitalcommons.mtu.edu/etdr/178

University of the Western Cape
5.
Schalkwyk, Hugh Je-Marco.
Assessment controls on reservoir performance and the affects of granulation seam mechanics in the Bredasdorp Basin, South Africa
.
Degree: 2006, University of the Western Cape
URL: http://hdl.handle.net/11394/1971
► The Bredasdorp Basin is one of the largest hydrocarbon producing blocks within Southern Africa. The E-M field is situated approximate 50 km west from the…
(more)
▼ The Bredasdorp Basin is one of the largest hydrocarbon producing blocks within Southern Africa. The E-M field is situated approximate 50 km west from the FA platform and was brought into commission due to the potential hydrocarbons it may hold. If this field is brought up to full producing capability it will extend the lifespan of the refining station in Mosselbay, situated on the south coast of South Africa, by approximately 8 to 10 years. An unexpected pressure drop within the E-M field caused the suite not to perform optimally and thus further
analysis was imminent to assess and alleviate the predicament. The first step within the project was to determine what might have cause the pressure drop and thus we had to go back to cores drilled by Soekor now known as Petroleum South Africa, in the early 1980’s.
Analyses of the cores exposed a high presence of granulation seams. The granulation seams were mainly subjected within sand units within the cores. This was caused by rolling of sand grains over one another rearranging themselves due to pressure exerted through compaction and faulting, creating seal like fractures within the sand. These fractures caused these sand units to compartmentalize and prohibit flow from one on block to the next. With advance inquiry it was discovered that there was a shale unit situated within the reservoir dividing the reservoir into two main compartments. At this point it was determined to use Petrel which is windows based software for 3D visualization with a user interface based on the Windows Microsoft standards. This is easy as well as user friendly software thus the choice to go with it. The software uses shared earth modeling tool bringing about reservoir disciplines trough common data modelling. This is one of the best modelling applications in the available and it was for this reason that it was chosen to apply within the given aspects of the project A lack of data was available to model the granulation seams but with the data acquired during the core analyses it was possible to model the shale unit and factor in the influences of the granulation seams to asses the extent of compartmentalization. The core revealed a thick shale layer dividing the reservoir within two sections which was not previously noted. This shale layer act as a buffer/barrier restricting flow from the bottom to the top halve of the reservoir. This layer is thickest at the crest of the 10km² domal closure and thins toward the confines of the E-M suite. Small incisions, visible within the 3 dimensional models could serve as a guide for possible re-entry points for future drilling. These incisions which were formed through Lowstand and Highstand systems tracts with the rise and fall of the sea level. The Bredasdorp Basin consists mainly of tilting half graben structures that formed through rifting with the break-up of Gondwanaland. The model also revealed that these faults segregate the reservoir further creating bigger compartments. The reservoir is highly compartmentalized which will explain the pressure…
Advisors/Committee Members: Carey, Paul (advisor).
Subjects/Keywords: Bredasdorp basin Wells;
Petrophysical analysis;
Mini-Permeameter Sandstone units;
Hydrocarbon potential;
Reservoirs
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Schalkwyk, H. J. (2006). Assessment controls on reservoir performance and the affects of granulation seam mechanics in the Bredasdorp Basin, South Africa
. (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/1971
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Schalkwyk, Hugh Je-Marco. “Assessment controls on reservoir performance and the affects of granulation seam mechanics in the Bredasdorp Basin, South Africa
.” 2006. Thesis, University of the Western Cape. Accessed December 12, 2019.
http://hdl.handle.net/11394/1971.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Schalkwyk, Hugh Je-Marco. “Assessment controls on reservoir performance and the affects of granulation seam mechanics in the Bredasdorp Basin, South Africa
.” 2006. Web. 12 Dec 2019.
Vancouver:
Schalkwyk HJ. Assessment controls on reservoir performance and the affects of granulation seam mechanics in the Bredasdorp Basin, South Africa
. [Internet] [Thesis]. University of the Western Cape; 2006. [cited 2019 Dec 12].
Available from: http://hdl.handle.net/11394/1971.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Schalkwyk HJ. Assessment controls on reservoir performance and the affects of granulation seam mechanics in the Bredasdorp Basin, South Africa
. [Thesis]. University of the Western Cape; 2006. Available from: http://hdl.handle.net/11394/1971
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
6.
Xu, Chicheng.
Reservoir description with well-log-based and core-calibrated petrophysical rock classification.
Degree: PhD, Petroleum Engineering, 2013, University of Texas – Austin
URL: http://hdl.handle.net/2152/21315
► Rock type is a key concept in modern reservoir characterization that straddles multiple scales and bridges multiple disciplines. Reservoir rock classification (or simply rock typing)…
(more)
▼ Rock type is a key concept in modern reservoir characterization that straddles multiple scales and bridges multiple disciplines. Reservoir rock classification (or simply rock typing) has been recognized as one of the most effective description tools to facilitate large-scale reservoir modeling and simulation. This dissertation aims to integrate core data and well logs to enhance reservoir description by classifying reservoir rocks in a geologically and petrophysically consistent manner. The main objective is to develop scientific approaches for utilizing multi-physics rock data at different time and length scales to describe reservoir rock-fluid systems. Emphasis is placed on transferring physical understanding of rock types from limited ground-truthing core data to abundant well logs using fast log simulations in a multi-layered earth model. Bimodal log-normal pore-size distribution functions derived from mercury injection capillary pressure (MICP) data are first introduced to characterize complex pore systems in carbonate and tight-gas sandstone reservoirs. Six pore-system attributes are interpreted and integrated to define
petrophysical orthogonality or dissimilarity between two pore systems of bimodal log-normal distributions. A simple three-dimensional (3D) cubic pore network model constrained by nuclear magnetic resonance (NMR) and MICP data is developed to quantify fluid distributions and phase connectivity for predicting saturation-dependent relative permeability during two-phase drainage. There is rich
petrophysical information in spatial fluid distributions resulting from vertical fluid flow on a geologic time scale and radial mud-filtrate invasion on a drilling time scale. Log attributes elicited by such fluid distributions are captured to quantify dynamic reservoir
petrophysical properties and define reservoir flow capacity. A new rock classification workflow that reconciles reservoir saturation-height behavior and mud-filtrate for more accurate dynamic reservoir modeling is developed and verified in both clastic and carbonate fields. Rock types vary and mix at the sub-foot scale in heterogeneous reservoirs due to depositional control or diagenetic overprints. Conventional well logs are limited in their ability to probe the details of each individual bed or rock type as seen from outcrops or cores. A bottom-up Bayesian rock typing method is developed to efficiently test multiple working hypotheses against well logs to quantify uncertainty of rock types and their associated
petrophysical properties in thinly bedded reservoirs. Concomitantly, a top-down reservoir description workflow is implemented to characterize intermixed or hybrid rock classes from flow-unit scale (or seismic scale) down to the pore scale based on a multi-scale orthogonal rock class decomposition approach. Correlations between
petrophysical rock types and geological facies in reservoirs originating from deltaic and turbidite depositional systems are investigated in detail. Emphasis is placed on the cause-and-effect relationship between…
Advisors/Committee Members: Torres-Verdín, Carlos (advisor).
Subjects/Keywords: Reservoir description; Rock classification; Orthogonal rock class; Well logs; Facies interpretation; Permeability prediction; Saturation-height analysis; Dynamic petrophysical modeling; Petrophysical upscaling; Uncertainty quantification
…saturationheight
analysis,
dynamic
petrophysical
modeling,
petrophysical upscaling, and production… …164
6.2.1 Petrophysical Analysis Using Nonlinear Joint Inversion of Well
Logs… …168
xiv
6.3.2 Inversion-Based Petrophysical Analysis...................................169… …Analysis....................................237
8.3.4 Rock-Type-Based Dynamic Petrophysical… …petrophysical analysis in the Hugoton gas field.......179
Table 6.2: Statistical distributions of…
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Xu, C. (2013). Reservoir description with well-log-based and core-calibrated petrophysical rock classification. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/21315
Chicago Manual of Style (16th Edition):
Xu, Chicheng. “Reservoir description with well-log-based and core-calibrated petrophysical rock classification.” 2013. Doctoral Dissertation, University of Texas – Austin. Accessed December 12, 2019.
http://hdl.handle.net/2152/21315.
MLA Handbook (7th Edition):
Xu, Chicheng. “Reservoir description with well-log-based and core-calibrated petrophysical rock classification.” 2013. Web. 12 Dec 2019.
Vancouver:
Xu C. Reservoir description with well-log-based and core-calibrated petrophysical rock classification. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2013. [cited 2019 Dec 12].
Available from: http://hdl.handle.net/2152/21315.
Council of Science Editors:
Xu C. Reservoir description with well-log-based and core-calibrated petrophysical rock classification. [Doctoral Dissertation]. University of Texas – Austin; 2013. Available from: http://hdl.handle.net/2152/21315

Université de Lorraine
7.
Chadouli, Kheira.
Caractérisation pétrographique appliquée à la modélisation pétrolière : étude de cas : Petrography characterization applied to petroleum system modeling : case studies.
Degree: Docteur es, Géosciences, 2013, Université de Lorraine
URL: http://www.theses.fr/2013LORR0291
► La compréhension d'un système pétrolier nécessite la caractérisation pétrographique de tous les éléments et les processus le composant. Dans ce travail, plusieurs exemples de roches…
(more)
▼ La compréhension d'un système pétrolier nécessite la caractérisation pétrographique de tous les éléments et les processus le composant. Dans ce travail, plusieurs exemples de roches mères, roches réservoirs et roches couvertures provenant de bassins pétroliers différents, ont été étudiés afin de décrire les méthodes pétrographique classiques et mettre en place des nouvelles. Ces dernières telles que : la création d'une cinétique de transformation d'un kérogène composé de deux types de matière organiques (programmation), analyse macérale et l'étude des microfractures par analyse d'images, la diffraction à rayon X ainsi que la tomographie ont permis la caractérisation de la roche mère. Quant aux roches réservoirs, les méthodes d'analyse d'image des propriétés pétrophysiques, la microscopie MSCL ainsi que les paramètres de mouillabilité permettent la description de la qualité de ces réservoirs et leurs préservations au cours du temps à cause des phénomènes de recristallisation, dissolution, circulation de fluide et de réaction TSR/BSR. Les roches couvertures étudiées dans ce travail sont celles des argilites callovo-oxfordienne, utilisant la diffraction à rayon X ainsi que l'analyse d'image et la tomographie. Ces méthodes ont facilité la compréhension de leurs comportements au cours du temps, leurs capacités de sorption/désorption et leurs fiabilités de stockage de déchets nucléaire. Enfin, la modélisation pétrolière avec Petromod permet de déterminer les fonctionnements des systèmes pétroliers. La modélisation par percolation est plus proche de la réalité des bassins pétroliers que celle de Darcy/Hybride
Understanding oil systems requires petrographic characterization of all elements and process that compose it. In this work, several examples of source rocks, reservoir rocks and seal from different petroleum basins have been studied in order to describe conventional petrographic methods and develop new ones. The new ones as: a program of transformation kinetic of kerogene composed of two types of organic matter, maceral analysis and microfractures study using images analysis, the diffraction X-ray and tomography allowed source rock description. As for, reservoir rocks, methods of petrophysical characterization by images analysis, MSCL Microscopy and wettability parameters permit reservoir quality description and their preservation over time due to recrystalization and dissolution phenomena, fluid flow and TSR/BSR reaction. The cap rocks studied in this thesis are those of Callovo-Ordovician argillites, using X-Ray diffraction as well as images analysis and tomography. Those methods facilitated the understanding of argillites behavior over time, their sorption/desorption ability and their reliability of nuclear waste storage. Finally, Modeling using Petromod helps to determine petroleum systems functioning. Modeling by percolation method gives results closer to oil basins reality, than by Darcy/Hybrid method
Advisors/Committee Members: Martinez, Luis (thesis director).
Subjects/Keywords: Étude pétrographique; Modélisation des bassins sédimentaire; Systèmes pétroliers; Cinétique du kérogène; Analyses d'images; Caractérisation pétrophysique; Interaction roches/fluides; Petrographic study; Sedimentary basin modeling; Petroleum systems; Kerogene kinetics; Images analysis; Petrophysical characterization; Rock/fluids interaction; 552.4; 553.28
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APA ·
Chicago ·
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APA (6th Edition):
Chadouli, K. (2013). Caractérisation pétrographique appliquée à la modélisation pétrolière : étude de cas : Petrography characterization applied to petroleum system modeling : case studies. (Doctoral Dissertation). Université de Lorraine. Retrieved from http://www.theses.fr/2013LORR0291
Chicago Manual of Style (16th Edition):
Chadouli, Kheira. “Caractérisation pétrographique appliquée à la modélisation pétrolière : étude de cas : Petrography characterization applied to petroleum system modeling : case studies.” 2013. Doctoral Dissertation, Université de Lorraine. Accessed December 12, 2019.
http://www.theses.fr/2013LORR0291.
MLA Handbook (7th Edition):
Chadouli, Kheira. “Caractérisation pétrographique appliquée à la modélisation pétrolière : étude de cas : Petrography characterization applied to petroleum system modeling : case studies.” 2013. Web. 12 Dec 2019.
Vancouver:
Chadouli K. Caractérisation pétrographique appliquée à la modélisation pétrolière : étude de cas : Petrography characterization applied to petroleum system modeling : case studies. [Internet] [Doctoral dissertation]. Université de Lorraine; 2013. [cited 2019 Dec 12].
Available from: http://www.theses.fr/2013LORR0291.
Council of Science Editors:
Chadouli K. Caractérisation pétrographique appliquée à la modélisation pétrolière : étude de cas : Petrography characterization applied to petroleum system modeling : case studies. [Doctoral Dissertation]. Université de Lorraine; 2013. Available from: http://www.theses.fr/2013LORR0291

Université de Bordeaux I
8.
Jouini, Mohamed Soufiane.
Caractérisation des réservoirs basée sur des textures des images scanners de carottes : Cross section measurement of the associated production of a top quark with a W boson in the dilepton channel with the ATLAS detector at LHC.
Degree: Docteur es, Sciences physiques et de l'Ingénieur, 2009, Université de Bordeaux I
URL: http://www.theses.fr/2009BOR13769
► Les carottes, extraites lors des forages de puits de pétrole, font partie des éléments les plus importants dans la chaîne de caractérisation de réservoir. L’acquisition…
(more)
▼ Les carottes, extraites lors des forages de puits de pétrole, font partie des éléments les plus importants dans la chaîne de caractérisation de réservoir. L’acquisition de celles-ci à travers un scanner médical permet d’étudier de façon plus fine les variations des types de dépôts. Le but de cette thèse est d’établir les liens entre les imageries scanners 3D de carottes, et les différentes propriétés pétrophysiques et géologiques. Pour cela la phase de modélisation des images, et plus particulièrement des textures, est très importante et doit fournir des descripteurs extraits qui présentent un assez haut degrés de confiance. Une des solutions envisagée pour la recherche de descripteurs a été l’étude des méthodes paramétriques permettant de valider l’analyse faite sur les textures par un processus de synthèse. Bien que ceci ne représente pas une preuve pour un lien bijectif entre textures et paramètres, cela garantit cependant au moins une confiance en ces éléments. Dans cette thèse nous présentons des méthodes et algorithmes développés pour atteindre les objectifs suivants : 1. Mettre en évidence les zones d’homogénéités sur les zones carottées. Cela se fait de façon automatique à travers de la classification et de l’apprentissage basés sur les paramètres texturaux extraits. 2. Établir les liens existants entre images scanners et les propriétés pétrophysiques de la roche. Ceci se fait par prédiction de propriétés pétrophysiques basées sur l’apprentissage des textures et des calibrations grâce aux données réelles. .
Cores extracted, during wells drilling, are essential data for reservoirs characterization. A medical scanner is used for their acquisition. This feature provide high resolution images improving the capacity of interpretation. The main goal of the thesis is to establish links between these images and petrophysical data. Then parametric texture modelling can be used to achieve this goal and should provide reliable set of descriptors. A possible solution is to focus on parametric methods allowing synthesis. Even though, this method is not a proven mathematically, it provides high confidence on set of descriptors and allows interpretation into synthetic textures. In this thesis methods and algorithms were developed to achieve the following goals : 1. Segment main representative texture zones on cores. This is achieved automatically through learning and classifying textures based on parametric model. 2. Find links between scanner images and petrophysical parameters. This is achieved though calibrating and predicting petrophysical data with images (Supervised Learning Process).
Advisors/Committee Members: Najim, Mohamed (thesis director).
Subjects/Keywords: Analyse et synthèse de textures; Prédictions de paramètres pétrophysiques; Description de faciès texturaux automatique; Classification non supervisée; Kohonen; Réseaux de neurones; Texture Analysis and synthesis; Predicting Petrophysical parameteres; Automatique faciès description; Neural network; Kohonen; Unsupervised classification
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jouini, M. S. (2009). Caractérisation des réservoirs basée sur des textures des images scanners de carottes : Cross section measurement of the associated production of a top quark with a W boson in the dilepton channel with the ATLAS detector at LHC. (Doctoral Dissertation). Université de Bordeaux I. Retrieved from http://www.theses.fr/2009BOR13769
Chicago Manual of Style (16th Edition):
Jouini, Mohamed Soufiane. “Caractérisation des réservoirs basée sur des textures des images scanners de carottes : Cross section measurement of the associated production of a top quark with a W boson in the dilepton channel with the ATLAS detector at LHC.” 2009. Doctoral Dissertation, Université de Bordeaux I. Accessed December 12, 2019.
http://www.theses.fr/2009BOR13769.
MLA Handbook (7th Edition):
Jouini, Mohamed Soufiane. “Caractérisation des réservoirs basée sur des textures des images scanners de carottes : Cross section measurement of the associated production of a top quark with a W boson in the dilepton channel with the ATLAS detector at LHC.” 2009. Web. 12 Dec 2019.
Vancouver:
Jouini MS. Caractérisation des réservoirs basée sur des textures des images scanners de carottes : Cross section measurement of the associated production of a top quark with a W boson in the dilepton channel with the ATLAS detector at LHC. [Internet] [Doctoral dissertation]. Université de Bordeaux I; 2009. [cited 2019 Dec 12].
Available from: http://www.theses.fr/2009BOR13769.
Council of Science Editors:
Jouini MS. Caractérisation des réservoirs basée sur des textures des images scanners de carottes : Cross section measurement of the associated production of a top quark with a W boson in the dilepton channel with the ATLAS detector at LHC. [Doctoral Dissertation]. Université de Bordeaux I; 2009. Available from: http://www.theses.fr/2009BOR13769
9.
Bussmann, M.C.
Identifying overlooked exploration opportunities from bypassed pay analysis - emphasis on the hydrocarbon prospectivity of the Brabant Formation in the Roer Valley Graben and West Netherlands Basin.
Degree: 2015, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/311425
► Bypassed pay analyses may reveal potentially overlooked exploration opportunities, as recognized by Lutgert et al. (2013). Analysis of a comprehensive petrophysical database reveals the presence…
(more)
▼ Bypassed pay analyses may reveal potentially overlooked exploration opportunities, as recognized by Lutgert et al. (2013).
Analysis of a comprehensive
petrophysical database reveals the presence of several overlooked exploration opportunities in the Broad Fourteens Basin, West Netherlands Basin and Roer Valley Graben. Untested hydrocarbon potential is recognized in the Chalk, Holland Greensand, Delfland, Brabant Limestone, Middle Werkendam, Lower Muschelkalk, Zechstein Fringe sandstones + carbonates and Westphalian C/D.
In particular, the understudied Middle Jurassic Brabant Formation is an excellent example of an overlooked exploration opportunity. Untested good-quality oil shows are found in more than 10 wells in the Roer Valley Graben and West Netherlands Basin. The main objectives of this study are twofold: 1) to create a conceptual geological model for the Brabant Formation, that can be used to understand and predict reservoir presence and quality on a first-order basis, and 2) to identify trap concepts. This study integrates seismic, well log and core data in combination with study of analogue formations from literature.
The Brabant Formation of the Altena Group (Bathonian - Oxfordian) comprises three re- and transgressive cycles of sandy limestone – marl deposition with an oolitic limestone on top. The present-day distribution of the Brabant Formation is, as a result of uplift and erosion, confined to the Roer Valley Graben, West Netherlands Basin and small areas in the Broad Fourteens Basin and Central Netherlands Basin. The formation is here interpreted to have been deposited on a shallow marine, transport-dominated carbonate ramp with gentle depositional slope (< 0.1º). Consequently, facies belts are wide, lateral facies changes are subtle and vertical facies changes are rapid. This has resulted in “layer-cake”-like stratification in a predominantly aggradational facies architecture. The regressive intervals have reservoir potential, whereas the transgressive intervals have seal potential for oil. Three depositional environments are recognized from cores: upper shoreface or shoal facies (inner ramp), lower shoreface facies (mid ramp) and offshore facies (outer ramp). Sandy calcarenitic and bioclastic grainstones of upper shoreface facies are clearly the most reservoir-prone (ϕAvg = 11%, KAvg = 10 mD). Storm-influenced marls and calcareous siltstones of lower shoreface facies are potential waste zones with intermediate reservoir and seal properties. Offshore silty marls and claystones have seal potential for oil (ϕAvg = 8%, KAvg = 0.7 mD) as proven in wells Andel-1 and Lekkerkerk-1. Gross reservoir thickness increases towards former depocentres (Roer Valley Graben, West Netherlands Basin) and is likely at a maximum in fastest subsiding grabens. In contrast, basin margin sequences are thinner and more amalgamated. During syn-tectonic deposition, grabens accumulated thicker sedimentary sequences, most likely still in similar facies. Thus, more potential net pay is expected in areas of higher subsidence…
Advisors/Committee Members: Jager, J. de.
Subjects/Keywords: bypassed pay analysis; overlooked exploration opportunities; petrophysical analysis; Brabant Formation; sandy limestone; carbonate ramp; Middle Jurassic; prospectivity; stranded field; sub-unconformity trap; downfaulted trap
…et al. (2013), a detailed
analysis of the NuTech petrophysical database is first… …upgrade oil prospectivity in the
study area.
11
Chapter 5 NuTech analysis
The petrophysical… …analysis consulting company with good reputation in petrophysical well log
interpretation (… …workflow during petrophysical analysis of the 110 selected
vintage wells from the Broad Fourteens… …textural analysis models lithology and petrophysical properties (porosity, permeability, SW…
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bussmann, M. C. (2015). Identifying overlooked exploration opportunities from bypassed pay analysis - emphasis on the hydrocarbon prospectivity of the Brabant Formation in the Roer Valley Graben and West Netherlands Basin. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/311425
Chicago Manual of Style (16th Edition):
Bussmann, M C. “Identifying overlooked exploration opportunities from bypassed pay analysis - emphasis on the hydrocarbon prospectivity of the Brabant Formation in the Roer Valley Graben and West Netherlands Basin.” 2015. Masters Thesis, Universiteit Utrecht. Accessed December 12, 2019.
http://dspace.library.uu.nl:8080/handle/1874/311425.
MLA Handbook (7th Edition):
Bussmann, M C. “Identifying overlooked exploration opportunities from bypassed pay analysis - emphasis on the hydrocarbon prospectivity of the Brabant Formation in the Roer Valley Graben and West Netherlands Basin.” 2015. Web. 12 Dec 2019.
Vancouver:
Bussmann MC. Identifying overlooked exploration opportunities from bypassed pay analysis - emphasis on the hydrocarbon prospectivity of the Brabant Formation in the Roer Valley Graben and West Netherlands Basin. [Internet] [Masters thesis]. Universiteit Utrecht; 2015. [cited 2019 Dec 12].
Available from: http://dspace.library.uu.nl:8080/handle/1874/311425.
Council of Science Editors:
Bussmann MC. Identifying overlooked exploration opportunities from bypassed pay analysis - emphasis on the hydrocarbon prospectivity of the Brabant Formation in the Roer Valley Graben and West Netherlands Basin. [Masters Thesis]. Universiteit Utrecht; 2015. Available from: http://dspace.library.uu.nl:8080/handle/1874/311425
.