This is a sequential approach work flow, where large scale properties are modeled first, followed by smaller uncertain properties. The act of modeling a reservoir using knowledge of the facies that make up the reservoir and the depositional environments that the facies represent. Fault modeling in petrel this is done by first defining the faults in the process called fault modeling. Facies modeling using simple or advanced stochastic simulations. Structural modeling consists of fault modeling, pillar gridding, and vertical layering.
Regional climatic model regcm reference manual version 4. A method to integrate geological knowledge in variogram. 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. These sessions, entitled facies models revisited, were intended to capture the state of the art with respect to facies modeling in.
For large, continuous facies bodies, however, the original algorithm6 cannot be used to model the local variations in orientation along single bodies. 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. Application of 3d reservoir modeling on zao 21 oil block. I am working on the petrophysical modeling of the sandstone reservoir suing petrel. The main steps involved in reservoir modeling include. In this study, petrel 2011 software is used for facies modeling of this carbonate reservoir. Petrel facies modeling is used to populate geocellular grids with discrete property values for geological characterization of the reservoir. Building a 3d geological model using petrel software for asmari reservoir, south eastern iraq. The variogram you see in the property facies modeling menus is the default variogram used for.
Pdf facies and petrophysical modeling of the upper bahariya. Threedimensional facies analysis using objectbased. Fast access to isatis powerful geostatistics from petrel the petrel isatis link is a plugin extension in petrel software. Petrel facies well log creation, editing, neural networks for facies log creation. This course focus on facies modeling, which in recent years has become the main method for guiding and constraining petrophysical models. Top structure map of the xfield showing the major faults structural modeling. Static reservoir modeling using well log and 3d seismic.
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. Application of 3d reservoir modeling on zao 21 oil block of. Using multidisciplinary multiscale data to create nonstationary facies probabilit y trend models. View geostatistical modeling of sedimentary facies and petrophysical properties research papers on academia. The structural and property model of the reservoir are briefly described as follows 1922. Facies interpretation and modelling an integrated workflow liz chellingsworth and pete kane agr tracs. This is the most straightforward algorithm for generating realizations of a multivariable gaussian field. G from facies logs and how to address some of the stumbling blocks, such as. Department of physics, university of lagos, lagos, nigeria. Geobody modeling, objectbased facies modeling obfm. This course is intended for the user with fundamental petrel modeling skills.
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. The petrel facies modeling module enables the population all geocellular grids with discrete property values for geological characterization of your reservoir. These are normally designed to match observations of geologic. An application to the kfield, libya valeria sisinni1, vanessa villarroel2, neil mcdougall1, marcos victoria1, yrma vallez1, and consuelo garcia mojonero1. Facies modeling described by probabilistic patterns using. These two algorithms are the most used algorithms for facies modeling with petrel journel et al. Structural modeling is the first step in building a 3d model. The building process may be decomposed into the following steps. Modeling lateral facies heterogeneity of an upper oligocene.
Creating a variogram from an objects settings panel. Jan 16, 2017 this feature is not available right now. Velocity modeling petrel workflow free download as powerpoint presentation. 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 course covers basic geostatistics, data preparation, data analysis, facies and petrophysical modeling. Full description from seismic to simulation procedures of shlumberger software. And in most cases, there are multiple varieties of each basic environment of deposition.
The pattern stores the neighborhood probabilities and is the main input into the modeling similar to the variogram model. Scribd is the worlds largest social reading and publishing site. The facies modeling workflow applied to the kfield model can be summarized in the following steps. Facies modeling is also vital to reservoir simulation and reservoir characterization analysis. Multipoint facies modeling examples of a turbidite and a. Pdf the earlymid paleocene farewell formation is stratigraphically distributed. Facies screening in petrophysical modeling using petrel. Nov 25, 2014 3d facies modelling project using petrel software. Three facies were identified based on cutoff range as mentioned. Similar facies may have similar porosity distributions and trends in a given area. 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. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. All the data top and base of stratigraphic logs, crosssection, key surfaces, lithofacies lateral extension etc.
Facies modeling is one of the most important tasks in reservoir. A new type of object, called backbone, has therefore been introduced. 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. Facies and petrophysical modeling of the upper bahariya member in abu gharadig oil and gas field, north western desert, egypt. Department of geosciences, university of lagos, lagos, nigeria. The oil field is composed of mainly fine sandstone, silt stone and some amount of shale content 3641. Static reservoir modeling using well log and 3d seismic data.
Facies modeling described by probabilistic patterns using multipoint statistics. The variogram type, ranges, and azimuth for each facies are provided for you. The methodology used in this work combines classical field data collection e. The facies model for the loudon field was generated using data obtained. 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. 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. This is a workflow showing how to generate a velocity model for depth conversion in petrel. Pdf building a 3d geological model using petrel software. Dear static modelers, can anybody help me with understanding the use of variograms in my facies modelling workflow. Static reservoir modelling of a discovery area in interior basin, gabon himanshu kumar bharti1, imran siddiqui1. Defining a new model, creating faults from fault polygons. In addition to distribution fluvial facies channel and levee systems it is possible to. Petrel combines geophysics, geology and reservoir engineering modules to enable a full seismic to simulation workflow.
The purpose of this step is to define the shape of each of the faults. Constraining multiplepoint facies models to seismic amplitude data hugo caetano1 and jef caers2 1 centre for modelling petroleum reservoirs cmrp, instituto superior tecnico av. Modeling facies bodies and petrophysical trends in. The facies model, therefore, provides the link to the sedimentological depositional model of the res ervoir, which. Modeling facies bodies and petrophysical trends in turbidite. 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. Skuagocad facies modeling for a geologically realistic reservoir model. Petrel in just a few clicks, saving considerable time in data. Msc geology and geophysics abstract the montserrat and sant llorenc del munt fandelta complexes were developed during the eocene in the ebro basin. In petrel facies modeling, t he target facies probability distribution is characterized by. Facies modeling of heterogeneous carbonates reservoirs by. Pdf threedimensional facies analysis using objectbased.
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. Static reservoir modelling of a discovery area in interior. Lecture notes sedimentary geology earth, atmospheric, and. Facies modeling support for geomodels applied stratigraphix. Pdf using data from an outcrop characterization of a sandstonerich turbidite. Find materials for this course in the pages linked along the left. Building a 3d geological model using petrel software for asmari reservoir, south eastern iraq article pdf available in iraqi journal of science 562c. Pdf best practice stochastic facies modeling from a channelfill. 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 practical sessions in the course are hands on in petrel and utilise a small 3d seismic and well log data set. Velocity modeling petrel workflow polynomial equations. Analyze data geostatistically prior to populating the geocellular model with facies and petrophysical properties, using a range of deterministic and stochastic algorithms. Skua gocad facies modeling offers tools and algorithms to develop geologically realistic 3d models of depositional facies and postdepositional features.
Constraining multiplepoint facies models to seismic. 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. For the love of physics walter lewin may 16, 2011 duration. Facies modeling should be the first step of the reservoir modeling workflow. Traditional facies modeling techniques based on variograms. Facies interpretation and modelling an integrated workflow. Fault modeling is the process of generating a faulted 3d grid and inserting the horizons, zones and layers into it. Differences in the responses measured from the outcrop and facies models. The method of most of was used to average the facies.
Facies modeling described by probabilistic patterns using multi. Construction of the facies model facies were interpreted using log motif methodology. Creating probability trend models for facies properties. I have selected three facies ie sandstone, shaly sandstone and shale on the basis of basic log analysis which. The training image describes the geological facies in relative position to each other. The facies modeling followed a hierarchical objectbased mechanism which was set to.
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