Structural modeling is the first step in building a 3d model. The methodology used in this work combines classical field data collection e. Pdf the earlymid paleocene farewell formation is stratigraphically distributed. I am working on the petrophysical modeling of the sandstone reservoir suing petrel.
Facies modeling described by probabilistic patterns using. Constraining multiplepoint facies models to seismic. The variogram you see in the property facies modeling menus is the default variogram used for. Facies modeling using simple or advanced stochastic simulations. And in most cases, there are multiple varieties of each basic environment of deposition. A reliable 3d seismic interpretation will be a direct input into the petrel 3d grid model, petrophysical modeling will be required to optimize rock and fluid property. Multipoint facies modeling examples of a turbidite and a. Petrel in just a few clicks, saving considerable time in data. The petrel facies modeling module enables the population all geocellular grids with discrete property values for geological characterization of your reservoir. Static reservoir modelling of a discovery area in interior. Regional climatic model regcm reference manual version 4. Scribd is the worlds largest social reading and publishing site. Pdf threedimensional facies analysis using objectbased.
The structural and property model of the reservoir are briefly described as follows 1922. The facies modeling workflow applied to the kfield model can be summarized in the following steps. Six wells have then been placed in the synthetic reservoir and the well data, along with a synthetic structural framework have been used to test and illustrate the modeling algorithms. Petrel facies well log creation, editing, neural networks for facies log creation. The course covers basic geostatistics, data preparation, data analysis, facies and petrophysical modeling. Geobody modeling, objectbased facies modeling obfm. Pdf best practice stochastic facies modeling from a channelfill. Pdf building a 3d geological model using petrel software. Defining a new model, creating faults from fault polygons. Department of physics, university of lagos, lagos, nigeria.
This course focus on facies modeling, which in recent years has become the main method for guiding and constraining petrophysical models. The purpose is to simulate the sand bodies in the formation. These two algorithms are the most used algorithms for facies modeling with petrel journel et al. These sessions, entitled facies models revisited, were intended to capture the state of the art with respect to facies modeling in. Facies screening in petrophysical modeling using petrel. Facies modeling should be the first step of the reservoir modeling workflow. Facies and petrophysical modeling of the upper bahariya member in abu gharadig oil and gas field, north western desert, egypt.
The main steps involved in reservoir modeling include. Creating probability trend models for facies properties. Facies interpretation and modelling an integrated workflow liz chellingsworth and pete kane agr tracs. The practical sessions in the course are hands on in petrel and utilise a small 3d seismic and well log data set. Static reservoir modeling using well log and 3d seismic. Analyze data geostatistically prior to populating the geocellular model with facies and petrophysical properties, using a range of deterministic and stochastic algorithms. This is a workflow showing how to generate a velocity model for depth conversion in petrel. The building process may be decomposed into the following steps. Application of 3d reservoir modeling on zao 21 oil block of. Full description from seismic to simulation procedures of shlumberger software. This is a sequential approach work flow, where large scale properties are modeled first, followed by smaller uncertain properties. Facies modeling is one of the most important tasks in reservoir. Department of geosciences, university of lagos, lagos, nigeria.
Structural modeling consists of fault modeling, pillar gridding, and vertical layering. For the love of physics walter lewin may 16, 2011 duration. In addition to distribution fluvial facies channel and levee systems it is possible to. I have stared myself blind on the data analysis tab in petrel and do understand what the nugget is and what variograms indicate variation in relation to distance. The oil field is composed of mainly fine sandstone, silt stone and some amount of shale content 3641. Msc geology and geophysics abstract the montserrat and sant llorenc del munt fandelta complexes were developed during the eocene in the ebro basin. Facies modeling support for geomodels if you are in the process of building a geomodel or would like to refine an existing geomodel, we can help in the following ways. G from facies logs and how to address some of the stumbling blocks, such as. The blueback geology toolbox includes a series of tools for input data preparation and qc, data analysis, fault analysis, 3d property modeling and qc and log data upscaling to provide petrel users with functionality features to speed up and improve geomodeling workflows. Velocity modeling petrel workflow polynomial equations. For large, continuous facies bodies, however, the original algorithm6 cannot be used to model the local variations in orientation along single bodies. Facies modeling described by probabilistic patterns using multipoint statistics.
Petrel facies modeling is used to populate geocellular grids with discrete property values for geological characterization of the reservoir. Traditional facies modeling techniques based on variograms. Top structure map of the xfield showing the major faults structural modeling. An application to the kfield, libya valeria sisinni1, vanessa villarroel2, neil mcdougall1, marcos victoria1, yrma vallez1, and consuelo garcia mojonero1.
Fault modeling is the process of generating a faulted 3d grid and inserting the horizons, zones and layers into it. Multipoint facies modeling is a stochastic method that converts a training image. Petrel combines geophysics, geology and reservoir engineering modules to enable a full seismic to simulation workflow. View geostatistical modeling of sedimentary facies and petrophysical properties research papers on academia. Skuagocad facies modeling for a geologically realistic reservoir model. Find materials for this course in the pages linked along the left. Modeling facies bodies and petrophysical trends in turbidite. Modeling facies bodies and petrophysical trends in. Threedimensional facies analysis using objectbased. Modeling lateral facies heterogeneity of an upper oligocene. Add well in definition tab highlight these section to display toggle visualization on plane click to desired property x section in arbitrary line draw line in 2d windowrc create vertical section toggle visualization on plane go to property model dispay facies. Jan 16, 2017 this feature is not available right now. I have selected three facies ie sandstone, shaly sandstone and shale on the basis of basic log analysis which. This is the most straightforward algorithm for generating realizations of a multivariable gaussian field.
Lecture notes sedimentary geology earth, atmospheric, and. Facies modeling support for geomodels applied stratigraphix. In this study, petrel 2011 software is used for facies modeling of this carbonate reservoir. The method of most of was used to average the facies. Building a 3d geological model using petrel software for asmari reservoir, south eastern iraq article pdf available in iraqi journal of science 562c. Similar facies may have similar porosity distributions and trends in a given area. Pdf using data from an outcrop characterization of a sandstonerich turbidite. These are normally designed to match observations of geologic.
Nov 25, 2014 3d facies modelling project using petrel software. The facies model, therefore, provides the link to the sedimentological depositional model of the res ervoir, which. Facies modeling of heterogeneous carbonates reservoirs by. Facies interpretation and modelling an integrated workflow. Static reservoir modeling using well log and 3d seismic data. Skua gocad facies modeling offers tools and algorithms to develop geologically realistic 3d models of depositional facies and postdepositional features.
Building a 3d geological model using petrel software for asmari reservoir, south eastern iraq. The depositional characteristics will suggest rules concerning the geometries of the facies and the possible relationships between facies, especially where the facies have been related to each other within a stratigraphic sequence or a cyclothem. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. The facies modeling followed a hierarchical objectbased mechanism which was set to. Facies modeling described by probabilistic patterns using multi. It enables both simple and complex workflowssuch as seismicdriven modeling in which probabilities can be used in several different ways to help create a realistic representation of the depositional facies or lithologies. Differences in the responses measured from the outcrop and facies models. Fault modeling in petrel this is done by first defining the faults in the process called fault modeling. A method to integrate geological knowledge in variogram. The variogram type, ranges, and azimuth for each facies are provided for you. This course is intended for the user with fundamental petrel modeling skills.
The geologic framework was integrated into schlumbergers petrel modeling software to construct a static 3d reservoir model illustrating the threedimensional distribution and connectivity of facies. Facies modeling in petrel is the process of building discrete rocktype facies distributions threedimensionally in a model grid. All the data top and base of stratigraphic logs, crosssection, key surfaces, lithofacies lateral extension etc. In petrel facies modeling, t he target facies probability distribution is characterized by. The training image describes the geological facies in relative position to each other.
Fault modeling in the previous section, we did some editing on the input data to bring it to a form suitable to petrel for building the 3d geological model. The petrel platform delivers workflows that greatly enhance reservoir knowledge. The modeling process was iterative to create a facies model that matches with the field geological interpretations or that is comparable with a similar geological analogue. Creating a variogram from an objects settings panel. The facies model for the loudon field was generated using data obtained. Dear static modelers, can anybody help me with understanding the use of variograms in my facies modelling workflow. Velocity modeling petrel workflow free download as powerpoint presentation. Fast access to isatis powerful geostatistics from petrel the petrel isatis link is a plugin extension in petrel software. Static reservoir modeling using well log and 3d seismic data in a kn field, offshore niger delta, nigeria lukumon adeoti 1, njoku onyekachi, olawale olatinsu 2, julius fatoba 3, musa bello1. Three facies were identified based on cutoff range as mentioned.
Static reservoir modelling of a discovery area in interior basin, gabon himanshu kumar bharti1, imran siddiqui1. Integration of facies models in reservoir simulation. The act of modeling a reservoir using knowledge of the facies that make up the reservoir and the depositional environments that the facies represent. The pattern stores the neighborhood probabilities and is the main input into the modeling similar to the variogram model. Construction of the facies model facies were interpreted using log motif methodology. Facies modeling is an important aspect of the modeling process. Using multidisciplinary multiscale data to create nonstationary facies probabilit y trend models. The property modelling exercises cover the scaleup from logs to cells, data analysis, facies modelling, variogram modelling, facies simulation including a comparison of sis indicator and object. A new type of object, called backbone, has therefore been introduced.
Facies modeling is also vital to reservoir simulation and reservoir characterization analysis. Conference of the canadian society of petroleum geologists and in dallas in 2004 annual conference of the american association of petroleum geologists. Pdf facies and petrophysical modeling of the upper bahariya. The purpose of this step is to define the shape of each of the faults.
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