Pdf best practice stochastic facies modeling from a channelfill. Facies modeling is driven by integration of the conceptual model, converted to a probability pattern, and constrained by hard data, which in this case included facies interpretation from well data. All interpretation tools are available in this window and the view can be zoomed, stretched, and squeezed in either direction. These models were then merged to create a final model with point. Petrel workflows are used for the example in this paper to merge several files. The user can select from a list of available objects, and define the geometrical size of each shape. Reservoir modeling with petrel linkedin slideshare. Building complex models in extensional and compressional settings duration. Pdf threedimensional facies analysis using objectbased.
Jan 21, 2017 using sequencestratigraphic tools to find and develop prospects at both local and basinwide scales duration. A wide range of interpretation issues are covered, all the way from 2d to 3d and even 4d with a multicomponent approach. Differences in the responses measured from the outcrop and facies models were. The facies modeling followed a hierarchical objectbased mechanism which was set to perform. The basic qcs and methods used for depth conversion will also. Facies as the key to using seismic inversion for modelling reservoir properties. Tarequzzaman assistant pro slideshare uses cookies to improve functionality and performance, and to.
There is a work around in petrel to merge different 3d seismic cubes into a single seismic cube by sampling the seismic data into points and populate these data into 3d grid. Static reservoir modelling of a discovery area in interior. The training image describes the geological facies in relative position to each other. Dear static modelers, can anybody help me with understanding the use of variograms in my facies modelling workflow. This is the most straightforward algorithm for generating realizations of a multivariable gaussian field. Facies modeling facies modeling was carried out using sequential indicator simulation to populate facies.
The file merging workflow is not trivial and requires many steps. Pdf integrated workflow for modeling basinscale petroleum. 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. Facies log were scaled up to assign the properties at. Defining a new model, creating faults from fault polygons. The ocean wizards and developers tools in visual studio 6 installing the ocean for petrel wizards the ocean for petrel wizard is installed as part of the ocean for petrel sdk installation process. Structural modeling consists of fault modeling, pillar gridding, and vertical layering. There is extensive conditioning to hard data and seismic data and these results to a high resolution geocellular model. Within a single environment, geoscientists can perform the key geological workflows from stratigraphic and seismic interpretation through fracture, facies, and geocellular property modeling to history matching and. Permeability transform based on m 5500 5700 5900 6100 6300 6500 6700 6900 7100 0. Object modeling is a facies modeling method that distributes facies with defined shapes. The vertical distribution and proportions of the various facies in well nbu222 and their dimensions, based on outcrop analogs, provided the input for a 3d facies model. Improved seismic characterization through facies based inversion in the depth domain.
Creating probability trend models for facies properties petroleum. This is a marked point process model, where the object locations are the points, and the marks describe the object geometry. 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. This is presentation for students for education purposes. Exercises will be done using industry standard modelling software petrel. Using multidisciplinary multiscale data to create nonstationary facies probabilit y trend models. Analyze data geostatistically prior to populating the geocellular model with facies and petrophysical properties, using a range of deterministic and stochastic algorithms. Next geology field trip characterization and petrel 3d. Final model results illustrate the benefits of using multipoint statistics for facies distribution in complex settings. Constraining multiplepoint facies models to seismic. This document is to this document is to discuss each technique and the expected eclipse key words which petrel. Petrel combines geophysics, geology and reservoir engineering modules to enable a full seismic to simulation workflow. The petrel facies modeling module enables the population all geocellular grids with discrete property values for geological characterization of your reservoir.
Installation of the wizard is an option and requires some disk space. Log interpretation used a deterministic approach to generate facies logs for wells. Click on domain convert by active velocity model thickness map 1. This video will teach you how to set major and minor distances for facies distribution in the model. The structural model combining seismic and well data. Petrel in just a few clicks, saving considerable time in data. This course is intended for the user with fundamental petrel modeling skills.
Data integration was facilitated by the petrel, schlumbergers reservoir modeling software. Appropriate algorithm method for petrophysical properties. Geologic and reservoir characterization and modeling. In other words, this will be an attempt at a best practice approach to a complex and varied workflow.
Pseudowells were inserted in the model to check the ng nettogross ratio and calculate an average number of sand bodies intersected by a well in the modeled area. Inlines, crosslines, time slices and other line types can be displayed in an interpretation window. The pattern stores the neighborhood probabilities and is the main input into the modeling similar to the variogram model. How to set variogram for facies distribution in petrel.
An overview monye vivian amalaonye industrial traineegeology agenda. However, whether the seismic is twoway time or depth indexed, seismic inversion products impedances are ubiquitously derived. A method to integrate geological knowledge in variogram. Constraining multiple geostatistical facies models to seismic amplitude data. Scribd is the worlds largest social reading and publishing site. Application of 3d reservoir modeling on zao 21 oil block. Facies modeling using simple or advanced stochastic simulations.
There are different approaches for hydraulic fracturi ng modeling in petrel 2012. The petrel platform delivers workflows that greatly enhance reservoir knowledge. 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. Nov 25, 2014 3d facies modelling project using petrel software. Facies model the turbidite sand bodies are modeled as objects that are placed in a background of shale. In practice, a local facies trend of a secondorder turbidite lobe is derived through multidisciplined research, although it usually cannot be quantified clearly. Threedimensional facies analysis using objectbased. The purpose of this step is to define the shape of each of the faults that should be modeled. Consider how are low andor high poroperm values connected barriers and flow paths. There will be a particular emphasis on integrating static and dynamic reservoir properties with the geological facies model. Facies model of geological facies object modeling 78 3.
The seismic interpretation window gives the user a classical 2d view of seismic data. Tarequzzaman assistant pro slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Petrel assumes that the layer geometry provided to the grid follows the geological layering in the model area. Petrosys petrel mapping petrosys mapping, modeling. The figure below shows a grid based stream channel. Pdf using data from an outcrop characterization of a sandstonerich. Afmdb1 facies modeling aphmb1 petrophysical modeling afrdb1 discrete fracture modeling aagrb1 advanced gridding and upscaling acapb1 petrel combined hma and pfo awlpb1 well deliverability and pipesim engine apfsb1 frontsim locked ahmab1 history match analysis hma arsmb1 production forecasting optimization pfo argmb1 reservoir. Each facies sand and mud is populated with rock impedance, using sequential simulation left image in figure 3. Highresolution 3d property model was generated showing the distribution of facies and porosity.
A toolbox of facies modeling algorithms enables the construction of geologically realistic reservoir models that honor geological concepts, wells and seismically derived constraints. The link with sedimentology and depositional facies models is made. Pdf the earlymid paleocene farewell formation is stratigraphically distributed across the. The mpsfdm workflow m o d e l p l a y s a c e n t r a l r o l e. Modeling facies bodies and petrophysical trends in. Fast access to isatis powerful geostatistics from petrel the petrel isatis link is a plugin extension in petrel software. Fault polygons, sticks, and cuts can be brought into petrel. Facies modeling described by probabilistic patterns using. Constraining multiple geostatistical facies models to seismic amplitude data 3 using this training image, a reference facies model for this layer is generated, as seen in figure 1. Petrel plugin for modeling uncertainty in metric space kwangwon park and jef caers stanford center for reservoir forecasting department of energy resource engineering stanford university abstract modeling uncertainty for reservoir performance prediction is still a challenging and outstanding problem due to geological complexity of reservoir and cpu demanding flow simulations. Seismic stratigraphy and depositional facies models eage. The facies modeling workflow applied to the kfield model can be summarized in the following steps.
Prestack depth migration is now commonplace, and there is always the need to calibrate the depth volumes with well control. Petrel facies modeling is used to populate geocellular grids with discrete property values for geological characterization of the reservoir. Use petrel reservoir engineering software and ofm well and reservoir analysis software with the eclipse industryreference reservoir simulator to develop and manage the input data for model initialization. Characterization and petrel 3d modeling of fluviodeltaic sedimentary architecture in kentucky join trip leaders dr. Fault modeling is the process of generating a faulted 3d grid and inserting the horizons, zones and layers into it. The main steps involved in reservoir modeling include. Thanks for contributing an answer to stack overflow. 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.
The practical sessions in the course are hands on in petrel and utilise a small 3d seismic and well log data set. Facies as the key to using seismic inversion for modelling. Property modelling used for modelling in petrel is split into 2 separate processes. Regional climatic model regcm reference manual version 4. These two algorithms are the most used algorithms for facies modeling with petrel tm falivene et al. Architecture and facies both systems have same proportion of high permeability facies structured system. Facies modeling is one of the most important tasks in reservoir characterization. The petrel mapping module by petrosys pmmbp is a presentation mapping tool developed by petrosys as a petrel module, which can be supplied and supported by schlumberger as part of a petrel installation. Facies interpretation and modelling an integrated workflow liz chellingsworth and pete kane agr tracs. In addition to distribution fluvial facies channel and levee systems it is possible to distribute other types of objects as well. Facies model of flow units sequential indicator 81 3. Structural modeling is the first step in building a 3d model. The stages consist of structural modeling such as horizons and faults, facies modeling and petrophysical modeling.
Constraining multiplepoint facies models to seismic amplitude data. Facies interpretation and modelling an integrated workflow. 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. Fault modeling in petrel this is done by first defining the faults in the process called fault modeling. The integrated model has been used to support key operational and reservoir development decisions. Integrated workflow for modeling basinscale petroleum systems. 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. Structural and property modeling net to gross, porosity, permeability, water saturation and facies were distributed stochastically within the constructed 3d grid using sequential gaussian simulation and sequential indicator simulation algorithms. The spatial distribution and resulting global proportions of the simulated facies within the 3d. Petrel facies modeling the petrel facies modeling module enables the population all geocellular grids with discrete property values for geological characterization of your reservoir. Petrel reservoir engineering and eclipse simulator improve. The reservoir structural model show system of different oriented growth faults f1 to f6. The purpose of this step is to define the shape of each of the faults. In petrel facies modeling, the target facies probability distribution is characterized by.
The difficulty relates to managing the steps and files. In the second model, a manual global fraction value has been entered and the. Creating probability trend models for facies properties. The building process may be decomposed into the following steps. In petrel facies modeling, t he target facies probability distribution is characterized by the facies global fraction parameter and trend models. Facies modeling using 3d prestack simultaneous seismic. Facies modeling is also vital to reservoir simulation and reservoir characterization analysis. The reader students as well as professional geophysicists, geologists and reservoir engineers is taken from an introductory to a more advanced study level. Application of 3d reservoir modeling on zao 21 oil block of zilaitun oil field peprah agyare godwill and jackson waburoko.
Within a single environment, geoscientists can perform the key geological workflows from stratigraphic and seismic interpretation through fracture, facies, and geocellular property modeling to history matching and production simulation. Facies modeling support for geomodels applied stratigraphix. Userbuilt geological bodies can be used to reproduce any geological concept. The course covers basic geostatistics, data preparation, data analysis, facies and petrophysical modeling. This is a sequential approach work flow, where large scale properties are modeled first. Msc geology and geophysics abstract the montserrat and sant llorenc del munt fandelta complexes were deve slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In addition to the improvements on largescaled surface modeling discussed above, a surfacebased facies modeling approach is presented. Ocean for petrel wizards and developers tools in visual studio. Figure5 facies modeling workflow scale up of well logs in this process interpreted facies log was resampled into the 3d grid along the well path fig. Several methods for the integration of the seismic data in facies models have been. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. Sometimes they are built as grids representing channel thickness and hung from an existing structure or inserted between two structures.
The act of modeling a reservoir using knowledge of the facies that make up the reservoir and the depositional environments that the facies represent. Structural 3d model was built using the three main horizons upper bahariya, lower bahariya, and kharita formations identified by seismic interpretation. Static reservoir modeling using well log and 3d seismic. Pdf application of petrel software in reserve estimation. Facies modeling described by probabilistic patterns using multi. The pmmbp is an excellent solution for producing improved subsurface maps in a fully integrated petrel environment with a single point of. Integration of facies models in reservoir simulation.