DV-Geo software system is intended for building and maintaining 3D hydrocarbon reservoir models, and for estimating hydrocarbon reserves from integrated interpretations of geoscience and oilfield data.
 | DV-GeoProvides link to user’s database management systems and readily accepts any data models. It is a powerful tool enabling dynamic data analysis in continuous display mode. |
General
DV-Geo is a system designed to build and maintain digital 3D structural-parametric hydrocarbon reservoir models from integrated interpretations of geologic, well logging and petrophysical data.
DV-Geo is capable of aiding implementation of the following tasks: gathering, analysis and interpretation of initial data, building a geologic model, hydrocarbon reserves estimation and preparation of reporting documentation.
DV-Geo workstation is a geophysicist’s workseat containing a complete set of tools for effective accomplishment of the objectives.
DV-Geo instruments incorporate:
- Database presenting all objects related to a certain data domain;
- Set of tools for data display, analysis, manipulation and interpretation;
- Set of computation algorithms and tools to develop computation algorithms.
The main feature of geologic modeling technology in DV-Geo is the consistency of all interpretation and data presenting elements:
- 1D geophysical borehole survey data;
- 2D geologic models (maps);
- 3D geologic models.
The DV-Geo software package has been in continuous development at CGE for more than 10 years based on direct interaction with companies’ geophysicists engaged in geologic modeling and reserves estimation.
The DV-Geo geologic modeling and reserves estimation technologies were considered by the Science and Technology Board under the RF State Commission for Reserves and recommended for use by design and services companies and oil and gas companies in geologic modeling and hydrocarbon reserves estimation.
A good number of fields in most diverse petroliferous provinces and administrative units of Russia and other countries, for which geologic models are built in CGE using DV-Geo software, are listed below:
- Timan-Pechora province – license areas: Syamayus, Korobkovo, Sarutayus, Musyurshor field;
- West Siberia – fields: Kharampur, North-Kharampur, West-Kharampur, Komsomol, North-Komsomol, West-Komsomol, Gubkin, Ayvased-Pur, New-Chasel, Upper-Chasel, Kyn, Tarasov, Sugmut, Vyngapur, North-Vyngapur, Samotlor, Krasnolenin, Russkoye, Romanov, Novogodneye, North-Novogodneye, Prirazlomnoye, Ugut, Kinyamin, Priobskoye, South-Priobskoye, Talnikov, Yety-Pur, Koshil, Ust-Vakh, Symoryakh-Shushmin, North-Symoryakh, South-Symoryakh, New-Urengoy, East-Urengoy, Middle-Itur, areas: Valyntoy, Kraynyaya; license areas: Uraboryakh, Meretoyakh, West-Purpey, and others;
- East Siberia – Yurubchen-Takhom field;
- Volga-Ural province – fields: Soldatov, Kazakov, Dorokhov, Moskudyin, Middle-Istok;
- Baltic province – fields: Kravtsov, Tarasov;
- Orenburg Region – fields: Veselov, Sakadin, Krasnoyar, Barsuk; areas: Novoberyozov, Volostnov;
- Astrakhan Region – fields: Asrakhan, Yelenov, areas: Sergin
- Udmurtia Republic (in Russia) – Onchugin field;
- Kalmykia Republic (in Russia) – Konukov-Sarpin, Dolan-Erdni;
- Kazakhstan – fields: Karamandybas and Uzen, Akiingel, Botakhan, East-Kamyshit, Southeast-Kamyshit, Matin, Zholdybay; Tyub-Karagan and Atash license areas;
- Uzbekistan – Kungrad field;
- Vietnam – offshore fields: Bach Ho, Dai Hung, Soi, Doi Moi;
- Algeria – Block 245-South;
- Peoples Republic of China – In Dai field;
More than 100 licensed DV-Geo systems are in operation in Russian and international oil companies and services companies. In addition to CGE, DV-Geo is used in RosNeft Oil Company, VNIIneft Research Institute, SamaraNIPIneft Research and Design Institute, and others. DV-Geo is installed in a number of educational institutions to train students in geologic modeling.
1. Basic module;
2. GBS-Control module;
3. Fault-Accounting Irregular Grid Builder module;
4. 2D-Model-Based 3D Lithologic Modeling module.
1. Basic module
This module incorporates basic software system capabilities such as facilities to maintain a project database, to load/unload data, to exchange data among projects, tools to display and manipulate project objects, inbuilt calculator, inbuilt programming language interpreter, facilities to arrange data processing flows and job schedules. The basic module is able to perform main processes associated with the building and maintenance of 3D geologic models.
These processes are:
- well-to-well correlation;
- interpretation of well logs and core sample analysis data;
- structural modeling (2D modeling;
- 3D lithologic and parametric modeling;
- sedimentation analysis;
- geostatistical analysis;
- grid upscaling and 3D parameter rescaling;
- hardcopy creation;
- hydrocarbon reserves estimation.
2. GBS-Control module
Geophysical Borehole Survey (GBS) Control module allows geophysical borehole survey control to be run and GBS-Control data to be organized as a GBS-Control database for subsequent use in the interpretation and detection of well production problems and their areal generalization. This module is intended for use by reservoir geologists, geophysicists and engineers to keep control over the development and production of hydrocarbon fields.
3. Fault-Accounting Irregular Grid Builder module
Allows irregular grids to be created with the account of faults, thus providing the basis for building 2D structural frameworks and 3D geologic models.
4. Principal-Model-Guided 3D Lithologic Modeling module
Based on stochastic approach, this software solution allows building 3D geologic models that account for 2D map information about the principal structure of the prospect being modeled.
Additional DV-Geo facilities:
1. Arrangement of distributed computing to enhance computing efficiency in building 2D/3D models (DV-Cluster);
2. Module Developer’s Library. The library includes facilities to develop additional computing and interface modules for DV-Geo system in C++ language.
Major functionality for geologic modeling in DV-Geo:
- 3D modeling of the distribution of petrophysical, litho-facial and production properties in reservoirs from interpreted well data;
- computation of maps showing hydrocarbon estimation parameters with the account of structural and lithologic specificities in a reservoir;
- fast access to and use of input data, intermediate and final interpreted data from a project database that integrates all available exploration, development and production data by employing a large array of interactive procedures;
- load of any geologic data from any database to the DV-Geo project database by using an ODBC interface and standard queries that make the DV-Geo interpretation system independent of the data models used, while the data being loaded can be previewed and filtered;
- building an optimized structural-parametric model for a reservoir by running a consistent sedimentation analysis of geologic parameter cubes and seismic attributes;
- identification of localities with specified parameters in a reservoir;
- detailed study of sedimentation processes, structure formation and rock transport directions by analyzing the paleo-tectonics data;
- data conditioning for a hydrodynamic simulation modeling, with the 3D model structure and homogeneity of reservoir properties kept preserved on an upscaled 3D grid;
- use of a single interactive apparatus for dynamic visual analysis of initial and interpreted data;
- hardcopy output of initial and interpreted data as sections and maps at specified scales and accepted standards.
DV-Geo is a powerful tool for dynamic visual analysis of large sets of geoscience and oilfield data.
DV-Geo is designed to run on personal computers under Windows 2000/XP/XPx64/Vista.
