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Title: Method for optimization of huff-n-puff gas injection in shale reservoirs

Abstract

Methods for optimization of liquid oil production by huff-n-puff in shale reservoirs to achieve an improved (and optimal) oil recovery factor. The process determines and utilizes the optimum huff and puff times, number of cycles and soaking time under practical operation and reservoir conditions. The huff time in the process is a period so long that the pressure near the wellbore reaches the set maximum injection pressure during the huff period. The puff time in the process is the time required for the pressure near the wellbore to reach the set minimum production pressure during the puff period. Soaking is typically not necessary during the huff-n-puff gas injection in shale oil reservoirs. The number of huff-n-puff cycles is determinable by the time in which the economic rate cut-off is reached.

Inventors:
Publication Date:
Research Org.:
Texas Tech Univ., Lubbock, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1600321
Patent Number(s):
10,487,635
Application Number:
15/372,214
Assignee:
Texas Tech University System (Lubbock, TX)
DOE Contract Number:  
FE0024311
Resource Type:
Patent
Resource Relation:
Patent File Date: 12/07/2016
Country of Publication:
United States
Language:
English
Subject:
04 OIL SHALES AND TAR SANDS

Citation Formats

Sheng, James J. Method for optimization of huff-n-puff gas injection in shale reservoirs. United States: N. p., 2019. Web.
Sheng, James J. Method for optimization of huff-n-puff gas injection in shale reservoirs. United States.
Sheng, James J. Tue . "Method for optimization of huff-n-puff gas injection in shale reservoirs". United States. https://www.osti.gov/servlets/purl/1600321.
@article{osti_1600321,
title = {Method for optimization of huff-n-puff gas injection in shale reservoirs},
author = {Sheng, James J.},
abstractNote = {Methods for optimization of liquid oil production by huff-n-puff in shale reservoirs to achieve an improved (and optimal) oil recovery factor. The process determines and utilizes the optimum huff and puff times, number of cycles and soaking time under practical operation and reservoir conditions. The huff time in the process is a period so long that the pressure near the wellbore reaches the set maximum injection pressure during the huff period. The puff time in the process is the time required for the pressure near the wellbore to reach the set minimum production pressure during the puff period. Soaking is typically not necessary during the huff-n-puff gas injection in shale oil reservoirs. The number of huff-n-puff cycles is determinable by the time in which the economic rate cut-off is reached.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {11}
}

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