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The Influence of the Geophysical Methods and Well-Logs Ambiguity on the Geological Model of Oil and Gas UncertaintyNormal access

Authors: I. Buddo, I. Shelokhov, A. Smirnov, V. Emelyanov, N. Misyurkeeva and I. Gorlov
Event name: ProGREss'19
Session: New Technologies in O&G Exploration / Новые технологии в ГРР
Publication date: 05 August 2019
DOI: 10.3997/2214-4609.201953082
Language: Russian
Info: Extended abstract, PDF ( 720.65Kb )
Price: € 20

Summary:
Estimation of the structural model uncertainty, capacitive parameters and the position of fluid contact of oil and gas fields at the reconnaissance and exploration stage is one of the priority problems. The problem is especially acute in the block structure of the field, as well as in the absence or lack of drilling materials and well-logs. In this instance, the joint interpretation of the ground geophysical studies - seismic and electrical exploration - allows to predict the position of fluid contact, minimize the “white spots” of capacitive characteristics and optimize exploration and well drilling. At the same time, each data set contains errors; therefore, it is extremely important to estimate uncertainties and possible errors of geological models. The task of the study is a probabilistic assessment of reserves of the target reservoir horizon of one of the Eastern Siberia fields based on the results of stochastic modeling, taking into account the uncertainties of the key elements of the model.


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