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Identifying Complex Fluvial Sandstone Reservoirs Using Core Well Log And 3d Seismic Data
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Book Synopsis Identifying Complex Fluvial Sandstone Reservoirs Using Core, Well Log and 3D Seismic Data by : William H. Hokanson
Download or read book Identifying Complex Fluvial Sandstone Reservoirs Using Core, Well Log and 3D Seismic Data written by William H. Hokanson and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cedar Mountain and Dakota Formations are significant gas producers in the southern Uinta Basin of Utah. To date, however, predicting the stratigraphic distribution and lateral extent of potential gas-bearing channel sandstone reservoirs in these fluvial units has proven difficult due to their complex architecture, and the limited spacing of wells in the region. A new strategy to correlate the Cedar Mountain and Dakota Formations has been developed using core, well-log, and 3D seismic data. The detailed stratigraphy and sedimentology of the interval were interpreted using descriptions of a near continuous core of the Dakota Formation from the study area. The gamma-ray and density-porosity log signatures of interpreted mud-dominated overbank, coal-bearing overbank, and channel sandstone intervals from the cored well were used to identify the same lithologies in nearby wells and correlate similar stratal packages across the study area. Data from three 3D seismic surveys covering approximately 140 mi2 (225 km2) of the study area were utilized to generate spectral decomposition, waveform classification, and percent less-than-threshold attributes of the Dakota-Cedar Mountain interval. These individual attributes were combined to create a composite attribute that was merged with interpreted lithological data from the well-log correlations. The overall process resulted in a high-resolution correlation of the Dakota-Cedar Mountain interval that permitted the identification and mapping of fluvial-channel reservoir fairways and channel belts throughout the study area. In the future, the strategy employed in this study may result in improved well-success rates in the southern Uinta Basin and assist in more detailed reconstructions of the Cedar Mountain and Dakota Formation depositional systems.
Book Synopsis Quantifying the Permeability Heterogeneity of Sandstone Reservoirs in Boonsville Field, Texas by Integrating Core, Well Log and 3D Seismic Data by : Qian Song
Download or read book Quantifying the Permeability Heterogeneity of Sandstone Reservoirs in Boonsville Field, Texas by Integrating Core, Well Log and 3D Seismic Data written by Qian Song and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing hydrocarbon reserves by finding new resources in frontier areas and improving recovery in the mature fields, to meet the high energy demands, is very challenging for the oil industry. Reservoir characterization and heterogeneity studies play an important role in better understanding reservoir performance to meet this industry goal. This study was conducted on the Boonsville Bend Conglomerate reservoir system located in the Fort Worth Basin in central-north Texas. The primary reservoir is characterized as highly heterogeneous conglomeratic sandstone. To find more potential and optimize the field exploitation, it's critical to better understand the reservoir connectivity and heterogeneity. The goal of this multidisciplinary study was to quantify the permeability heterogeneity of the target reservoir by integrating core, well log and 3D seismic data. A set of permeability coefficients, variation coefficient, dart coefficient, and contrast coefficient, was defined in this study to quantitatively identify the reservoir heterogeneity levels, which can be used to characterize the intra-bed and inter-bed heterogeneity. Post-stack seismic inversion was conducted to produce the key attribute, acoustic impedance, for the calibration of log properties with seismic. The inverted acoustic impedance was then used to derive the porosity volume in Emerge (the module from Hampson Russell) by means of single and multiple attributes transforms and neural network. Establishment of the correlation between permeability and porosity is critical for the permeability conversion, which was achieved by using the porosity and permeability pairs measured from four cores. Permeability volume was then converted by applying this correlation. Finally, the three heterogeneity coefficients were applied to the permeability volume to quantitatively identify the target reservoir heterogeneity. It proves that the target interval is highly heterogeneous both vertically and laterally. The heterogeneity distribution was obtained, which can help optimize the field exploitation or infill drilling designs. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/149473
Book Synopsis Seismic Attributes for Prospect Identification and Reservoir Characterization by : Satinder Chopra
Download or read book Seismic Attributes for Prospect Identification and Reservoir Characterization written by Satinder Chopra and published by SEG Books. This book was released on 2007 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing the physical basis, mathematical implementation, and geologic expression of modern volumetric attributes including coherence, dip/azimuth, curvature, amplitude gradients, seismic textures, and spectral decomposition, the authors demonstrate the importance of effective colour display and sensitivity to seismic acquisition and processing.
Book Synopsis Sedimentology of Paralic Reservoirs by : G.J. Hampson
Download or read book Sedimentology of Paralic Reservoirs written by G.J. Hampson and published by Geological Society of London. This book was released on 2017-07-20 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paralic reservoirs reflect a range of depositional environments including deltas, shoreline–shelf systems and estuaries. They provide the backbone of production in many mature basins, and contribute significantly to global conventional hydrocarbon production. However, the range of environments, together with relative sea-level and sediment supply changes, result in significant variability in their stratigraphic architecture and sedimentological heterogeneity, which translates into complex patterns of reservoir distribution and production that are challenging to predict, optimize and manage. This volume presents new research and developments in established approaches to the exploration and production of paralic reservoirs. The 13 papers in the volume are grouped into three thematic sections, which address: the sedimentological characterization of paralic reservoirs using subsurface data; lithological heterogeneity in paralic depositional systems arising from the influence of tidal currents; and paralic reservoir analogue studies of modern sediments and ancient outcrops. The volume demonstrates that heterogeneity in paralic reservoirs is increasingly well understood at all scales, but highlights gaps in our knowledge and areas of current research.
Book Synopsis Integrating Wells and 3D Seismic Data to Delineate the Sandstone Reservoir Distribution of the Talang Akar Formation, South Sumatra Basin, Indonesia by :
Download or read book Integrating Wells and 3D Seismic Data to Delineate the Sandstone Reservoir Distribution of the Talang Akar Formation, South Sumatra Basin, Indonesia written by and published by . This book was released on 2011 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study describes the distribution and depositional environment of selected sandstone reservoirs in the Oligocene-Miocene fluvial-deltaic Talang Akar Formation (TAF), Delta (DLT) area1, Jambi Sub-Basin, South Sumatra Basin. Three-Dimension (3D) seismic data covering an area of 170 km2 and well logs from four wells are used. The area lies in an early Tertiary rift basin that was subjected to Plio-Pleistocene compression. Growth strata along extensional faults demonstrate that the TAF was deposited during active rifting and basin growth. Well logs (gamma ray and mud logs) show interbedded sandstone, shale and coal typical of a fluvial-deltaic and shallow marine setting. Based on the well logs, the sandstone layers are interpreted as mainly distributary channel fill facies. Two productive horizons defined by drill stem tests at two wells are mapped throughout the seismic volume, together with major faults and top basement. These two horizons are examined using amplitude and acoustic impedance maps. The amplitude maps are related to the character of the interface between the sandstone and the adjacent layers. They may also be affected by tuning effects. Acoustic impedance is related to the layer itself. Comparison of the acoustic impedance with the well logs shows good correspondence in the shallow section but a poorer match at depth. Maps of the reflection amplitude are compared with acoustic impedance along the horizons. Strong variations are visible which appear to be controlled by depositional features and are interpreted to be distributary channels. Emphasis is on features visible in both data sets. Based on the interpretations made during this study, four new well sites in areas with potentially thick sands are proposed. 1 Note that all well names, statistics and locations were modified according to proprietary data rights by PT PERTAMINA (Persero)
Book Synopsis Stratigraphic Reservoir Characterization for Petroleum Geologists, Geophysicists, and Engineers by : Roger M. Slatt
Download or read book Stratigraphic Reservoir Characterization for Petroleum Geologists, Geophysicists, and Engineers written by Roger M. Slatt and published by Elsevier Inc. Chapters. This book was released on 2013-11-21 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many tools and techniques for characterizing oil and gas reservoirs. Seismic-reflection techniques include conventional 2D and 3D seismic, 4D time-lapse seismic, multicomponent seismic, crosswell seismic, seismic inversion, and seismic attribute analysis, all designed to enhance stratigraphy/structure detection, resolution, and characterization. These techniques are constantly being improved. Drilling and coring a well provides the “ground truth” for seismic interpretation. Rock formations are directly sampled by cuttings and by core and indirectly characterized with a variety of conventional and specialized well logs. To maximize characterization and optimize production, many of these tools as possible should be employed. It is often less expensive to utilize a wide variety of tools that directly image or measure reservoir properties at different scales than to drill one or two dry holes.
Book Synopsis Seismic Reservoir Characterization of Distributary Channel Sandstones in the Lower Cretaceous Paluxy Reservoir, Delhi Field, Louisiana by : Holly Casey Robinson
Download or read book Seismic Reservoir Characterization of Distributary Channel Sandstones in the Lower Cretaceous Paluxy Reservoir, Delhi Field, Louisiana written by Holly Casey Robinson and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delhi Field is a producing oil field located 30 miles east of Monroe, Louisiana. Discovered in 1944, the field is estimated to contain 357 million barrels of original oil in place (OOIP). Up to November 2009, 192 million barrels had been produced. The primary target is the Holt-Bryant sandstone reservoir. The field has undergone primary production (1944-1953), secondary waterhood recovery (1953-1980), and since November 2009 is now producing through tertiary CO2 hooding. Reservoir monitoring is being carried out to improve the reservoir characterization and recovery efficiency. Time-lapse seismic interpretation results of this study were the identification of CO2 flow paths within the reservoir. An identified time-lapse anomaly indicates CO2 is flowing from the Paluxy up to the more permeable Tuscaloosa, which is critical to the enhanced oil recovery project because it indicates the Paluxy is not being properly swept. The time-lapse seismic interpretation allowed for the identification of permeability baffles in the Paluxy reservoir. The identified areas with low relative permeability improved the interpretation and delineation of high quality sandstone CO2 flow paths. The interpreted CO2 flow paths and low permeability areas allowed for injection and production pattern alteration recommendations to improve oil recovery. Delhi Field is composed of distributary channel sandstones of the Lower Cretaceous Paluxy Formation. Spectral decomposition resulted in improved imaging and aided in the interpretation of distributary channel sandstones. Core, well logs, and seismic data were calibrated and used to interpret the depositional environment of the Paluxy, which was interpreted as a straight distributary channel system on a delta plain. The peak frequency and coherency volumes provided detailed sandstone thickness and width values, which will provide a framework to improve and expand the reservoir model and assist in well locations to improve sweep efficiency.
Book Synopsis Reservoir Characterization of the Clinton Sandstone in Eastern Ohio Utilizing 3D Seismic Interpretation and Well Log Analysis by : Dylan Klaus Wiemer
Download or read book Reservoir Characterization of the Clinton Sandstone in Eastern Ohio Utilizing 3D Seismic Interpretation and Well Log Analysis written by Dylan Klaus Wiemer and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clinton Sandstone is a tight, laterally discontinuous sandstone that was deposited in the Early Silurian in both deltaic and shallow marine environments. This interval is well known in the western Appalachian Basin as the reservoir rock for several large as well as historic oil and gas fields. In eastern Ohio exists the East Canton Oil Field (ECOF) which is primarily controlled by stratigraphic trapping and is estimated to have contained 1.5 billion barrels of oil in place. The presence of a thick regional carbonate above the Clinton Sandstone and advances in directional drilling make it an ideal candidate for horizontal drilling and completion. Located over the southeastern extent of the north south trending ECOF is a 400 square mile 3D survey of which a 40 square mile cutout will be used in this study. Within the 3D survey study area, are 3 wells that contain dipole sonic and bulk density log curves. At the base of the Clinton Sand exists an AVO anomaly seen in the log data by a large increase in shear wave velocity and a large decrease in Poisson's ratio. Using the available logs and seismic data, a pre stack inversion was generated for both compressional impedance, shear impedance and Poisson's ratio. Variations in seismic response of the Clinton Sandstone are closely related to porosity variability within the reservoir interval. Inverting for Poisson's Ratio has shown to be a useful tool for tight sand exploration in the Appalachian Basin as its relationship to clean sand is utilized to better understand and map reservoir variability within the ECOF boundaries as well as outside.
Book Synopsis Comprehensive Practice of Exploration and Evaluation Techniques in Complex Reservoirs by : Xiaodong Cheng
Download or read book Comprehensive Practice of Exploration and Evaluation Techniques in Complex Reservoirs written by Xiaodong Cheng and published by Springer. This book was released on 2019-05-15 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers exploration and evaluation practices for various types of complex reservoirs, and summarizes a series of practical and effective techniques and methods. For example, it shows how, by integrating multiple types of new logging technology, complex reservoir petrophysics evaluation can be performed using high-precision core experiment data and quantitative logging interpretation; and demonstrates how the technology of sporopollen assemblage and palynofacies analysis can improve the time precision of sequence stratigraphy and the quantitative study level of sedimentary facies, respectively. It discusses how reservoir lateral prediction and vertical resolution can be substantially improved by integrating fracture prediction and geostatistical inversion; and presents innovative log interpretation charts for the lithological identification of metamorphic rocks, e.g. GR-DEN crossplot and Impedance-Resistivity crossplot. To support the main content, the book features a wealth of high-resolution, thin- section images, quantitative illustrations of palynofacies composition, multi-property overlapping map set and quantitative tables. It offers an essential reference guide for researchers in geological exploration and evaluation, and will also appeal to a broad readership, from engineering technicians to advanced graduate students in related areas.
Book Synopsis Geophysics and Geosequestration by : Thomas L. Davis
Download or read book Geophysics and Geosequestration written by Thomas L. Davis and published by Cambridge University Press. This book was released on 2019-05-09 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of the geophysical techniques and analysis methods for monitoring subsurface carbon dioxide storage for researchers and industry practitioners.
Book Synopsis Reservoir Development Scale Modeling Based on Integration of High-resolution 3-D Seismic Data, Well Logs and Core Data by : Dirk Seifert
Download or read book Reservoir Development Scale Modeling Based on Integration of High-resolution 3-D Seismic Data, Well Logs and Core Data written by Dirk Seifert and published by . This book was released on 1994 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integration of Outcrop and Modern Analogs in Reservoir Modeling by : G. Michael Grammer
Download or read book Integration of Outcrop and Modern Analogs in Reservoir Modeling written by G. Michael Grammer and published by AAPG. This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pattern Recognition for Fractured Reservoir Characterization Using Subsurface Big Data by : Egbadon Ajibola Udegbe
Download or read book Pattern Recognition for Fractured Reservoir Characterization Using Subsurface Big Data written by Egbadon Ajibola Udegbe and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been a significant increase in the quantity of data generated from monitoring technologies for subsurface operations such as permanent downhole sensors, as well as cross-hole and seismic surveys. Traditional models and techniques have proven inadequate for the purpose of extracting information from Big Data, in support of reservoir management and decision-making. In addition, the last decade has brought about increased exploration of unconventional reservoirs such as shale, due to more favorable economics resulting from advances in directional drilling and hydraulic fracturing. However, existing methods for describing induced and natural fracture characteristics in the subsurface are still evolving, and associated impacts on well performance are not completely understood. To attain optimal development of these resources, we require accurate characterization of fractures and reservoir characteristics from subsurface time-series and spatial data.The above challenges have the potential to be addressed by developing new Big Data analytic tools focused on identifying and characterizing complex subsurface features such as fractures, by exploiting pattern recognition and high-performance computing to uncover masked trends in large volumes of subsurface data. In support of this objective, real-time face detection techniques have been adapted to establish a pattern recognition methodology for feature extraction, statistical learning and probabilistic model evaluation. Under this framework, a set of easy-to-compute features based on Haar wavelets are extracted directly from the data, in order to serve as attributes for training a cascade of probabilistic tree-based ensemble classification models. As a use case for time-series data analytics, production data simulated from hydraulically fractured shale gas wells have been trained to identify candidates for re-stimulation treatment. Results demonstrate the viability of the proposed framework in recognizing favorable re-stimulation candidate wells using solely gas rate profiles, with improved accuracy over conventional tools such as type-curve matches. Secondly, the proposed methodology has been extended to help identify fractures in post-stack seismic data, which has been trained using raw seismic amplitude responses generated using a discontinuous Galerkin finite element seismic wave propagation model. Next, the approach has been validated using 3D post-stack seismic data from the Niobrara Shale interval within the Teapot Dome field in Wyoming. The applicability of the proposed framework has been demonstrated for identifying sub-seismic fractures, by considering the amplitude profile adjacent to interpreted fullbore microimage (FMI) well log data. The up-scaled spatial distribution of the predicted fractures shows agreement with existing geological studies and align with interpreted large-scale faults within the interval of interest.
Book Synopsis Interpretation of Three-Dimensional Seismic Data, Seventh Edition by : Alistair R. Brown
Download or read book Interpretation of Three-Dimensional Seismic Data, Seventh Edition written by Alistair R. Brown and published by AAPG. This book was released on 2011-08-20 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardcover plus DVD
Book Synopsis Carbonate Reservoir Characterization Based on Integration of 3-D Seismic Data and Well Logs Using Conventional and Artificial Intelligence Approaches by :
Download or read book Carbonate Reservoir Characterization Based on Integration of 3-D Seismic Data and Well Logs Using Conventional and Artificial Intelligence Approaches written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lacustrine Sandstone Reservoirs and Hydrocarbon Systems by : Olive W. Baganz
Download or read book Lacustrine Sandstone Reservoirs and Hydrocarbon Systems written by Olive W. Baganz and published by AAPG. This book was released on 2012-11-20 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many publications on lacustrine systems concentrate on reconstructing paleo-environments, deciphering paleoclimate or estimating hydrocarbon source potential. This is the first memoir to give attention to describing the occurrence, distribution and character of sandstones in various lake settings. The memoir is divided into four sections beginning with a global overview, and followed by two sections covering lacustrine systems in compressional and extensional regimes, and concludes with a series of papers on modern lake regimes.
Book Synopsis United Kingdom Oil and Gas Fields by : G. Goffey
Download or read book United Kingdom Oil and Gas Fields written by G. Goffey and published by Geological Society of London. This book was released on 2020-12-03 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geological Society Memoir 52 records the extraordinary 50+ year journey that has led to the development of some 458 oil and gas fields on the UKCS. It contains papers on almost 150 onshore and offshore fields in all of the UK’s main petroliferous basins. These papers range from look-backs on some of the first-developed gas fields in the Southern North Sea, to papers on fields that have only just been brought into production or may still remain undeveloped, and includes two candidate CO2 sequestration projects. These papers are intended to provide a consistent summary of the exploration, appraisal, development and production history of each field, leading to the current subsurface understanding which is described in greater detail. As such the Memoir will be an enduring reference source for those exploring for, developing, producing hydrocarbons and sequestering CO2 on the UKCS in the coming decades. It encapsulates the petroleum industry’s deep subsurface knowledge accrued over more than 50 years of exploration and production.
