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Title: 3D modelling and characterization of delta reservoir in SE-Hungary

Abstract

The Algyo field is the largest field of Hungary consisting of more than 40 oil and gas bearing layers. The upper part of this field developed in delta slope and delta plain units of a progradational delta system, the lower members are turbidity rock bodies of prodelta and deep basin fans. As a type analogy ofthe reservoirs developed in Miocene-Pliocene progradational delta systems, the reservoir {open_quotes}Szeged-1{close_quotes} of the Algyo field has been chosen. It has been penetrated by 912 wells over an area of about 60 square km. This reservoir is interpreted as an alternation of distributary channels and inter-distributary swamp areas. About 40 cores with 100% core recovery was taken. The reservoir has been on stream since the late 60`-s, the geological model can be controlled by the data of the reservoir engineering. An integrated 3-D reservoir description based on a grid-oriented 3-D geostatistical visualisation of the internal lithological and petrophysical heterogeneity has been developed, This system integrates data of core descriptions, standard and special core analyses, and petrophysical well-log interpretations. The reservoir geometry and lithological heterogenity have been characterized by two models: Markov-model for the lithological transitions, and the 3D-grid-based geostatistical model for the visualisation. The 3-D visualizationmore » of the petrophysical data expresses the dependence of recovery mechanism, and injection schemes on the real internal heterogeneity. These images may be generalized and used as conditional constraints for the simulation of internal heterogeneity of other Pannonian fields developed only by few wells.« less

Authors:
;  [1]
  1. MOL Plc, Budapest (Hungary)
Publication Date:
OSTI Identifier:
127418
Report Number(s):
CONF-950995-
Journal ID: AABUD2; ISSN 0149-1423; TRN: 95:005942-0112
Resource Type:
Journal Article
Journal Name:
AAPG Bulletin
Additional Journal Information:
Journal Volume: 79; Journal Issue: 8; Conference: International conference and exhibition of the American Association of Petroleum Geologists, Inc.: managing change at the turn of the century, Nice (France), 10-13 Sep 1995; Other Information: PBD: Aug 1995
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; HUNGARY; OIL FIELDS; NATURAL GAS FIELDS; RESERVOIR ROCK; GEOLOGIC MODELS; DRILL CORES; PETROGRAPHY; ALLUVIAL DEPOSITS; RESERVOIR ENGINEERING; MIOCENE EPOCH; PLIOCENE EPOCH

Citation Formats

Geiger, J, and Komlosi, J. 3D modelling and characterization of delta reservoir in SE-Hungary. United States: N. p., 1995. Web.
Geiger, J, & Komlosi, J. 3D modelling and characterization of delta reservoir in SE-Hungary. United States.
Geiger, J, and Komlosi, J. 1995. "3D modelling and characterization of delta reservoir in SE-Hungary". United States.
@article{osti_127418,
title = {3D modelling and characterization of delta reservoir in SE-Hungary},
author = {Geiger, J and Komlosi, J},
abstractNote = {The Algyo field is the largest field of Hungary consisting of more than 40 oil and gas bearing layers. The upper part of this field developed in delta slope and delta plain units of a progradational delta system, the lower members are turbidity rock bodies of prodelta and deep basin fans. As a type analogy ofthe reservoirs developed in Miocene-Pliocene progradational delta systems, the reservoir {open_quotes}Szeged-1{close_quotes} of the Algyo field has been chosen. It has been penetrated by 912 wells over an area of about 60 square km. This reservoir is interpreted as an alternation of distributary channels and inter-distributary swamp areas. About 40 cores with 100% core recovery was taken. The reservoir has been on stream since the late 60`-s, the geological model can be controlled by the data of the reservoir engineering. An integrated 3-D reservoir description based on a grid-oriented 3-D geostatistical visualisation of the internal lithological and petrophysical heterogeneity has been developed, This system integrates data of core descriptions, standard and special core analyses, and petrophysical well-log interpretations. The reservoir geometry and lithological heterogenity have been characterized by two models: Markov-model for the lithological transitions, and the 3D-grid-based geostatistical model for the visualisation. The 3-D visualization of the petrophysical data expresses the dependence of recovery mechanism, and injection schemes on the real internal heterogeneity. These images may be generalized and used as conditional constraints for the simulation of internal heterogeneity of other Pannonian fields developed only by few wells.},
doi = {},
url = {https://www.osti.gov/biblio/127418}, journal = {AAPG Bulletin},
number = 8,
volume = 79,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1995},
month = {Tue Aug 01 00:00:00 EDT 1995}
}