Open AccessEvaluation of the thermal effect potential for Bazhenov formation production stimulation based on the experimental data
Author(s) -
А. А. Ерофеев,
А. А. Пачежерцев,
И. А. Карпов,
Nikita Morozov,
G. A. Kalmykov,
Аlexey Cheremisin,
Е. В. Козлова,
А. Ю. Бычков
Publication year - 2017
Publication title -
vestnik moskovskogo universiteta. seriâ 4, geologiâ
Language(s) - English
Resource type - Journals
ISSN - 0579-9406
DOI - 10.33623/0579-9406-2017-4-39-47
Subject(s) - porosity , pyrolytic carbon , permeability (electromagnetism) , autoclave , materials science , pyrolysis , petroleum engineering , thermal , scanning electron microscope , composite material , mineralogy , geology , chemical engineering , chemistry , metallurgy , thermodynamics , biochemistry , physics , membrane , engineering
In this paper the temperature treatment impact on Bazhenov formation core samples are shown. Impact was performed by pyrolysis in a temperature range of 300-480 °C and in the closed autoclave in the presence of water at reservoir pressure. It is shown that as a result of thermal exposure at 400 °C pyrolytic peak S2 is reduced by 90-95% and generation potential of rocks almost completely implemented. The microtomographic samples studies combined with scanning electron microscopy allowed to establish the dependence of permeability and porosity of the rocks. It demonstrated that even at 350 °C the fracture system formed in core samples also the porosity and permeability due to impact may increase from several times to several ten times. The results will allow for a more accurate simulation of enhanced oil recovery treatment on Bazhenov formation rocks to increase oil recovery.