bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dimensões estatal, gerencial e individual da Política Nacional de Prevenção e Controle do Câncer (de Mama): um modelo avaliativo
Authors: Roque Ferreira Daiane Medeiros , Lima Afonso Augusto Teixeira de Freitas de Carvalho , Ferreira Marco Aurélio Marques 
Published: October 2021

O objetivo desse estudo foi evidenciar a existência de três dimensões teóricas condicionantes do desempenho na Política Nacional de Prevenção e Controle do Câncer (PNPCC), a saber: a dimensão estatal, em seu aparato legal e estrutural; a dimensão gerencial, por meio da capacidade gerencial municipal; e a dimensão individual, pelo envolvimento da sociedade com comportamentos difundidos pela política. Além disso, tem-se como proposta desenvolver um modelo para avaliar a PNPCC, o qual denominou-se de Modelo Sinérgico de Avaliação de Desempenho de Política Pública em Saúde (MoSADPPS). Para cumprir os objetivos propostos, foram adotados procedimentos metodológicos quantitativos como a Regressão Linear Logística e a Análise Fatorial. Os resultados confirmam a influência dessas três dimensões no resultado da PNPCC. Também encontrou-se que o melhor desempenho com a Política não está relacionado com melhores níveis de desenvolvimento econômico e social do município, mas possivelmente pela capacidade de gerenciar as políticas públicas de saúde.
Spatiotemporal Rates of Tectonic Deformation and Landscape Evolution above a Laterally Propagating Thrust Fault: Wheeler Ridge Anticline, California, USA
Authors: Kleber Emily J. , DeVecchio Duane E. , Arrowsmith J. Ramón , Rittenour Tammy M. 
Published: October 2021

AbstractThe Wheeler Ridge anticline, located in the southern San Joaquin Valley of California, USA, is a well-studied and classic example of a laterally growing fault propagation fold. New high-resolution lidar elevation data combined with nine infrared stimulated luminescence (IRSL) ages of discrete geomorphic surfaces that are bounded by prominent transverse wind and river gaps allow for investigation of tectonic topography through time. Luminescence ages from four of the six surfaces yield depositional ages that range from 32 ka to 153 ka, which are broadly consistent with a previously published soil chronosequence. Our graphical modeling indicates an average surface uplift rate of ~2.1 mm/yr and an average along-strike fold propagation rate of ~20 mm/yr. However, our probabilistic modelling and topographic analysis suggest a rate decrease of both uplift and lateral propagation toward the fault tip from ~2.4 to 0.7 mm/yr and from ~49 to 14 mm/yr, respectively. Rate decreases are not progressive but rather occur in punctuated deformational intervals across previously documented structural barriers (tear faults) resulting in a fold that is characterized by discrete segments that exhibit a systematic deformational decrease toward the east. The punctuated tectonic growth of Wheeler Ridge has also locally controlled the topographic evolution of the anticline by effecting the formational timing and position of at least seven wind and river gaps that result from multiple north-flowing antecedent streams that traverse the growing structure. We quantify the timing of wind and river gap formation, based on IRSL results and inferred incision rates, and present a model for the spatiotemporal evolution of transverse drainages and the topographic development of Wheeler Ridge. Our chronology of gap formation broadly correlates with regional Late Pleistocene dry climate intervals suggesting that both tectonics and climate were integral to the geomorphic development of the Wheeler Ridge anticline.
Experimental and Numerical Simulation Study of Flow and Solute Transport in Pore-Fractured Media Based on High-Density Resistivity Method
Authors: Yan Xiaosan , Wang Xiaoyong , Ma Lei , Ge Can , Qian Jiazhong 
Published: October 2021

Abstract
Pore-fractured media is a ubiquitous phenomenon throughout the world and is a high degree of heterogeneity. The mechanism of water flow and solute transport in the media is still not fully clear. In this study, experiments were conducted in pore-fracture media with various hydraulic gradients to establish the relationship between the hydraulic gradient and specific discharge by using a side guide and to test the resistivity of tracer (sodium chloride) by using a high-density resistivity monitoring system. Quantifying models were, respectively, set up, and results were compared with the traditional methods. Main results are obtained that (1) the phenomenon from Darcian flow to non-Darcian flow was found in pore-fractured media. Both the Forchheimer and Izbash equations can well describe the flow process in the back part of the curve; (2) the phenomenon from non-Fickian to Fickian then to non-Fickian was found in fractured media; (3) good performance of CTRW-TPL has been obtained for both the larger R2 and smaller RMSE values, their counterparts resulting from the ADE model.
Shoreline Evolution, Aeolian Deflation and Anhydrite Distribution of the Holocene, Abu Dhabi
Authors: Kirkham Anthony 
Published: October 2021

ABSTRACT
Easier access to most parts of the Abu Dhabi coastline, combined with satellite imagery, has enabled a more detailed examination of the Holocene strata than was possible twenty or thirty years ago. Whilst the basic principles of coastal progradations documented in those early days are still valid, they portrayed an oversimplified picture of the Holocene coastal geomorphology and sabkha sedimentology. New data re-emphasises the importance of antecedant topography in imposing depositional complexity on the Holocene System. Former Holocene shorelines can now be mapped with greater clarity and reveal its highly embayed nature. The Holocene transgressive limits are locally redefined. Some palaeo-highs, that formed earlier Holocene peninsulas, have been completely removed by deflation. Two phases of sabkha anhydrite are recognised and their distributions are largely predictable by remote sensing.
Surface Geology, Lithostratigraphy and Tertiary Growth of the Dammam Dome, Saudi Arabia: A New Field Guide
Authors: Weijermars Ruud 
Published: October 2021

ABSTRACT
The surface geology of the Dammam Dome, Saudi Arabia, is documented in the geographic context of the modern and extensive urban and industrial developments in this area. A new geologic road map shows where key Tertiary outcrops occur relative to major roads, and columnar sections and field photographs illustrate the stratigraphic relationships and support the discussion on depositional environments. Surface geology is also used to infer growth rates for the Dammam field. These rates are generally consistent with those determined from subsurface data in the Awali field. The Dammam Dome is here estimated to have risen at time-averaged rates of 7.5 meters per million years for the Neogene and 7 meters per million years for the Oligocene. The nearby Awali Dome below Bahrain Island, likewise cored by Hormuz Salt, grew at 2.5 meters per million years during the Early Cretaceous, accelerated to 9 meters per million years during the Late Cretaceous, and uplift continued at 5.6 meters per million years during the Tertiary and Quaternary. This paper may also serve as a practical field guide for geologists visiting the Eastern Province, whether industry professionals, students or faculty.
Structural Influences on Facies Trends of Carbonate Inner Ramp Systems, Examples from the Kuwait-Saudi Arabian Coast of the Arabian Gulf and Norhtern Yucatan, Mexico
Authors: Lomando Anthony J. 
Published: October 2021

ABSTRACT
The value of integrating structural influences with sedimentology is identifying the significant changes that occur along strike and downdip. Understanding where and how these changes occur can have a profound influence on exploration risk assessment along inner ramp and inner shelf trends, particularly in the search for stratigraphic traps. Dip-oriented structural elements along depositional strike of inner ramps of the discussed areas include major fault zones, folds, smaller faults, and impact craters. These tectonic influences control often discontinuous facies distribution patterns of barrier islands, lagoons, sabkhas, and inner ramp carbonate factories. In contrast, strike-oriented structural influences often control the location of facies trends which promotes trend continuity. Wave-dominated Holocene and modern inner ramp deposits from southern Kuwait-northern Saudi Arabia and Northern Yucatan, Mexico, provide complementary models to the classic channelized ramp system of Abu Dhabi. Structural influences relative to coastal orientations control regional and local depositional styles, trend continuity/discontinuity, the location of carbonate factories and landward lagoon and tidal flat depositional characteristics. As reservoir-updip seal pairs for stratigraphic trap exploration, these analogues also demonstrate that changes along depositional strike should be expected, and in many cases could be predictable. These relationships emphasize the need to carefully integrate structure with facies and paleo-environmental reconstructions when mapping trends and assessing exploration risk in the search for stratigraphic and combination traps.
Stratigraphic and Petrophysical Characteristics of Cored Arab-D Super-k Intervals, Hawiyah Area, Ghawar Field, Saudi Arabia
Authors: Meyer Franz O. , Price Rex C. , Al-Raimi Saleh M. 
Published: October 2021

ABSTRACT
Super-permeability or super-k (as defined here), refers to confined intervals that have production or injection rates of at least 500 barrels of fluid/day/foot. Eight cored wells—four producers and four injectors—show super-k performance within the northern Hawiyah study area. One injector well had multiple super-k flow intervals. Super-k flow correlates with specific limestone, dolomite, or fractured intervals based on an analysis of core and flowmeter data. A thin, high-permeability unit sandwiched between low-permeability strata characterizes the sequential stratification of stratiform super-k flow units. Oolitic, mixed skeletal pelletoidal, foraminiferal, fragmented Cladocoropsis or Cladocoropsis lithofacies may make up the high-permeability conduits in limestones, and various mud-dominated facies form the tight enclosing layers. Sucrosic or vuggy fabrics characterize the highly permeable layers in dolomite-controlled intervals, and mosaic textures form the tight envelope. Production from stratiform dolomite is typically from one or more thin (generally less than six-inch thick) stringers some of which represent tempestite deposits. Super-k flow from fracture-controlled intervals has no correlation with either facies or dolomite textural boundaries. An unexpected result of this study was the discovery that not all super-k flow comes from high-permeability features such as fractures or zones of dolomitized leached Cladocoropsis. Instead, ordinary rock fabrics with normal permeability ranges (0.1 to 1 darcy) characterize most of the super-k intervals in six of the eight wells examined.
Bioecostratigraphy of the Shu’aiba Formation, Shaybah field, Saudi Arabia
Authors: Hughes Geraint Wyn 
Published: October 2021

ABSTRACT
The Aptian Shu’aiba Formation forms a major carbonate reservoir in the Shaybah field of eastern Saudi Arabia. Lack of exposures and poor seismic data have forced the cored intervals to be fully exploited to provide evidence of the depositional environment and layering of the reservoir rocks and associated lithofacies. Rudist, foraminiferal and coccolith evidence indicates an Aptian age for the entire Formation, most of it being early Aptian. A major unconformity at the top of the Shu’aiba separates it from the overlying Nahr Umr Formation. Rapid biofacies variations suggest possible sequence boundaries within the Shu’aiba Formation. Semi-quantitative macropaleontological and micropaleontological analyses indicate significant paleoenvironmentally influenced lateral and vertical bioassemblage variations. Lagoon, rudist-associated back-bank, bank-crest and fore-bank, and upper-ramp depositional environments have been interpreted, of which the bank represents the gradual amalgamation of earlier isolated rudist shoals. Integrating the micropaleontological analyses with rudist assemblages has facilitated the prediction of rudist-associated reservoir facies. Variations in the micro- and macrofacies permit the Formation to be divided into three layers. (1) The “lower Shu’aiba” (without rudists) is dominated by a regionally extensive, moderately deep marine planktonic foraminiferal/algal association of Palorbitolina lenticularis-Hedbergella delrioensis-Lithocodium aggregatum and the benthonic foraminifera Debarina hahounerensis, Praechrysalidina infracretacea, Vercorsella arenata and rotalids. (2) The “middle Shu’aiba” shows the significant lateral and vertical differentiation of a rudist-rimmed shallow carbonate platform typically associated with a marine highstand. A predominance of rudist species Glossomyophorus costatus and Offneria murgensis occurs together with Lithocodium aggregatum, Palorbitolina lenticularis, Trocholina spp. and miliolid foraminifera. (3) The “upper Shu’aiba” represents an expansion of the lagoon (associated with a marine transgression), and a predominance of Agriopleura cf. blumenbachi and A. cf. marticensis rudists, together with Debarina hahounerensis, Praechrysalidina infracretacea and Vercorsella arenata. The localized distribution of the rudist Horiopleura cf. distefanoi in association with corals, is a feature of the eastern flank of the field. A coarse assemblage-based biozonation for the Shu’aiba has been proposed, but a detailed scheme is precluded by rapid diachronous biofacies variations across the Shaybah field. In addition to the major biocomponent assemblages, minor variations reveal high-frequency depositional cycles that may assist in the interpretation of the distribution and correlation of reservoir facies. The identification of bioassemblages, and the paleoenvironmental interpretation of formation micro-imager logs from vertical cores in exploration wells, has assisted the calibration of images from uncored horizontal development wells.
The Minagish Field Tar Mat, Kuwait: Its Formation, Distribution and Impact on Water Flood
Authors: Al-Ajmi Hamad , Brayshaw Andrew C. , Barwise Anthony G. , Gaur Ram S. 
Published: October 2021

ABSTRACT
In common with many giant oilfields world wide, the Minagish field (Minagish Oolite Formation) in Kuwait has an areally extensive heavy oil zone of variable thickness at the base of the oil column. The heavy oil zone, or tar mat, is thought to act as a partial permeability barrier between the aquifer and oil leg, but its field-wide effect and properties were unknown. A full-field water flood is planned for the Minagish field. Therefore, an understanding of the distribution and properties of the heavy oil zone is critical in deciding whether to inject water above the tar mat (with unavoidable reserve losses) or directly into the aquifer in areas where the tar mat is poorly developed.
The difficulty in discriminating between cemented and bituminous intervals on electric logs has led to the adoption of geochemical techniques to detect the presence and thickness of heavy oil zones. By using detailed Iatroscan analysis, the tar mat is characterized by a high proportion of asphaltenes, but low concentration of saturates, polars and aromatics. Results of geochemical analyses demonstrate that the Minagish tar mat is the result of de-asphalting rather than gravity segregation. Compositional variations through the oil column have been mapped using geochemical parameters measured on core samples. A predictive model for API gravity and live oil viscosities has been established for the field. This new understanding of the Minagish tar mat, its genesis and spatial distribution has helped in developing a water injection strategy that maximizes recovery in the Minagish field.
Late Permian to Holocene Paleofacies Evolution of the Arabian Plate and its Hydrocarbon Occurrences
Authors: Martin A.Ziegler 
Published: October 2021

ABSTRACTA series of 19 paleofacies maps have been generated for given time intervals between the Late Permian and Holocene to reconstruct the depositional history of the Arabian Plate. The succession of changing lithological sequences is controlled by the interplay of eustacy and sediment supply with regional and local tectonic influences. The Mesozoic paleofacies history of the Plate is, in its central and eastern portion east of Riyadh, strongly influenced by an older N-trending, horst and graben system that reflects the grain of the Precambrian Amar Collision and successively younger structural deformations. The late Paleozoic Hercynian orogenic event caused block faulting and relative uplift and resulted in a marked paleorelief. This jointed structural pattern dominated the entire Mesozoic and, to some extent, the Cenozoic facies distribution. The relationship between producing fields and the paleofacies maps illustrates the various petroleum systems of particular times and regions.
Permeability and Rock Fabric from Wireline Logs, Arab-D Reservoir, Ghawar Field, Saudi Arabia
Authors: Lucia F. Jerry , Jennings James W. , Rahnis Michael , Meyer Franz O. 
Published: October 2021

ABSTRACT
The goal of reservoir characterization is to distribute petrophysical properties in 3-D. Porosity, permeability, and saturation values have no intrinsic spatial information and must be linked to a 3-D geologic model to be distributed in space. This link is provided by relating petrophysical properties to rock fabrics. The vertical succession of rock fabrics was shown to be useful in constructing a geologic framework for distributing porosity, permeability, and saturation in 3-D. Permeability is perhaps the most difficult petrophysical property to obtain and image because its calculation from wireline logs requires the estimation of pore-size distribution. In this study of the Arab-D reservoir, rock fabric and interparticle porosity were used to estimate pore-size distribution. Cross-plots of water saturation and porosity, calibrated with rock-fabric descriptions, formed the basis for determining the distribution of rock fabric and pore size from resistivity and porosity logs. Interparticle porosity was obtained from travel-time/porosity, cross-plot relationships. A global porosity-permeability transform that related rock fabric, interparticle porosity, and permeability was the basis for calculating permeability from wireline logs. Calculated permeability values compared well with core permeability. In uncored wells, permeability was summed vertically and the horizontal permeability profile compared with flow-meter data. The results showed good correlation in most wells.
Permeability Determination from Stoneley Waves in the Ara Group Carbonates, Oman
Authors: Qobi Latifa , de Kuijper André , Tang Xiao Ming , Strauss Jonathan 
Published: October 2021

ABSTRACT
Measurement of continuous permeability profiles on a routine basis has become possible through recent advances in wireline logging hardware and software. Continuous permeability profiles allow geologists and reservoir engineers to better characterize their reservoirs and to more efficiently complete and manage the production of the hydrocarbon reserves. One of the most promising methods for the calculation of continuous permeability information is the use of Stoneley wave data acquired using a monopole acoustic device.
This paper presents the results of a case study conducted for Petroleum Development Oman. In this study, permeability was determined from Stoneley wave data from the Sarmad-1H2 and Sarmad-2H1 wells that penetrated the carbonate reservoirs of the Ara Group of Oman. The Stoneley-wave derived profile was compared with permeability data from other sources; such as, cores, wireline pressure tests, and the interpretation of nuclear magnetic resonance measurements. The results demonstrated the validity of the methodology and showed that Stoneley-wave data can be used on a routine basis to obtain a continuous permeability indication for completion evaluation purposes. The method has great potential in permeability prediction.
Tilted original oil/water contact in the Arab-D reservoir, Ghawar field, Saudi Arabia
Authors: Stenger Bruno , Pham Tony , Al-Afaleg Nabeel , Lawrence Paul 
Published: October 2021

ABSTRACTA review of the electrical logs, fluid properties, and production history of 195 flank wells drilled in the Arab-D carbonate reservoir of the Ghawar field, Saudi Arabia, showed that the original oil/water contact was regionally tilted. The contact was about 200 ft higher in the southern Haradh sector than in the northern Shedgum and ‘Ain Dar sectors. In Haradh, the fluid contact was also locally tilted down from west to east by as much as 800 ft. In the reservoir, the oil and aquifer densities changed from lighter oil and denser water in the north to lighter water and denser oil in the south. Decreasing methane content caused the increase in oil density and a reduction in the water density was the result of a salinity decrease. The evolution of fluid densities was closely correlated to a decreasing regional-scale geothermal gradient, probably indicating that temperature controlled the distribution of fluid densities. Simple analytical calculations showed that the magnitude of the observed tilt of the original oil/water contact from north to south might be explained by changes in fluid densities. On the western flank of central Haradh, the Arab-D reservoir water was anomalously young and fresh and this created a large salinity gradient between the western and eastern aquifer legs. This anomaly was explained by pressure-dependent vertical leakage along the Wadi Sahba structural trough between the Arab-D reservoir and the shallower Biyadh aquifer. Consequently, the integrity of the Hith Formation seal above the Arab-D reservoir might be locally compromised under particular conditions. A full-field reservoir simulation model, specific geological features, and examples from the technical literature supported a static interpretation of the tilted original oil/water contact in the Arab-D reservoir of Ghawar through the combined effects of changes in oil and water densities.