Tezislər / Theses

THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
59
THE STUDY OF HUFF-N-PUFF UNCONVENTIONAL GAS 
ENHANCED OIL RECOVERY METHOD IN TIGHT OIL 
RESERVOIRS
Habil Yarıyev 
Baku Higher Oil School,
Baku, Azerbaijan 
[e-mail] 
Supervisor: Rashad Nazaraliyev 
Key words: 
“Enhanced Oil Recovery”, “Huff-N-Puff”, “
Tight
Reservoirs” 
 
The fact that discovery of new hydrocarbon sources is a complicated 
procedure, and that most oil fields possess between 60% and 70% of 
unproducible hydrocarbons in place, triggers the development of novel 
methods as regards Enhanced Oil Recovery. With only working on 
conventional reservoirs, it may not be able to meet the world energy demand 
as it is increasing with exponential rate. To meet demands, for low 
permeability reservoirs it is famous to increase the efficiency by injection of 
different substances into the well. (OWD, 2022)
The depletion of the volume of conventional reservoirs creates a chance 
for unconventional reservoirs to come to the game. Upstream enterprises 
and publications have reported a substantial drop in shale oil output, 
indicating an urgent industrial demand for shale EOR. (Administration, 2022)
Their characteristics is different that it is possible to differentiate them. 
In terms of their permeability, it is the most important element that has been 
addressed and published in the oil business. Because hydrocarbons cannot 
effectively flow across pore spaces at such permeability, oil recovery is 
limited. As a result, enhanced oil recovery (EOR) technologies are 
necessary. (Resources, 2022)
Gas Huff and Puff enhanced oil recovery (EOR) is quite beneficial 
method as many laboratory studies and outdoor pilot testing have lately been 
completed. The field reaction is always beyond analytical and reservoir 
modelling projection, according to input from the Eagle Ford lean gas Huff 
and Puff (HNP) pilot. However, in the later phase of the research the possible 
application of the action in Azerbaijan, and its possible benefit for the industry 
is going to be analyzed. (Mydland, 2022) 
This research seeks to give an engineering workflow, using numerical 
simulation, to analyze the feasibility of the HNP process for prospective 
implementation, inspired by the success of the HNP process in various pilot 
projects conducted in shales. Such as Eagle ford (USA), Bakken field (USA).
EOR technology of gas injection may be utilized to recover residual oil 
in situ. Projects involving displacement gas injection may be done in well 

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