Steam-Air Injection Process

2016 ◽  
Author(s):  
Jeannine Chang ◽  
John Ivory
Keyword(s):  
Air Injection ◽  
Injection Process

Chemically Assisted Ignition Technologies for a Light Oil Air Injection Process

2008 ◽  
Vol 47 (07) ◽  
Author(s):  
J. Li ◽  
S.A. Mehta ◽  
R.G. Moore ◽  
M.G. Ursenbach ◽  
E. Zalewski ◽  
...  
Keyword(s):  
Air Injection ◽  
Injection Process ◽  
Light Oil

Experimental and Mechanism Study on Crude Oil Spontaneous Ignition during the Air Injection Process

2020 ◽  
Vol 34 (6) ◽  
pp. 7076-7084
Author(s):  
Ping Yue ◽  
Siyuan Huang ◽  
Fancheng Zeng ◽  
James J. Sheng ◽  
Qi Jiang
Keyword(s):  
Crude Oil ◽  
Air Injection ◽  
Spontaneous Ignition ◽  
Mechanism Study ◽  
Injection Process

Risk Assessment and Field Case Study on Oil/Natural Gas Explosion during High-Pressure Air Injection Process

SPE Journal ◽  
2021 ◽  
pp. 1-14
Author(s):  
Lijuan Huang ◽  
Yu Wang ◽  
Liang Zhang ◽  
Shufeng Pei ◽  
Zhe Zhang ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Necessary Conditions ◽  
Safety Issue ◽  
Fault Tree Analysis ◽  
Air Injection ◽  
Heavy Oils ◽  
Gas Explosion ◽  
Flammability Limits ◽  
Injection Process

Summary Air injection techniques have been widely applied in oil fields, but the associated safety issue of natural gas (NG) and oil explosion has been of great concern. In this study, explosion experiments of different NG compositions were conducted under high-pressure and high-temperature conditions (up to 15 MPa and 373 K) to reveal the necessary conditions for gas explosion in the air injection process. The experimental results indicate that the lower flammability limits (LFLs) and upper flammability limits (UFLs) of NGs change logarithmically with increasing pressure, which can significantly increase the explosion risk. The rise of temperature can also expand the flammability limit range. Based on the mechanisms and necessary conditions for NG and oil component explosion, fault tree analysis (FTA) models for explosion occurring during the air injection process were proposed that can provide valuable guidelines for designing anti-explosion procedures for field applications. Several explosion incidents that have occurred in air injection operations in different oil reservoirs are described, and the explosion mechanisms are analyzed. NG explosion can occur during air injection when NG is the main component present in the gas phase that can mix with air to form a combustible gas. For heavy oils with little NG, autoignited explosion of vaporized oil components can be the main reason for the incidents during the steam and air coinjection process because the autoignition temperature of heavy oil can be greatly reduced at high pressure.

A Methodology for Screening and Ranking of Reservoirs for Light Oil Air Injection Implementation

2014 ◽  
Author(s):  
E.. Niz-Velasquez ◽  
M. L. Trujillo ◽  
C.. Delgadillo ◽  
J.. Padilla
Keyword(s):  
Numerical Simulation ◽  
Oil Recovery ◽  
Evaluation Method ◽  
Feasibility Studies ◽  
Air Injection ◽  
Successful Implementation ◽  
Screening Criteria ◽  
Oil Companies ◽  
Injection Process ◽  
Light Oil

Abstract A great portion of the produced oil currently comes from mature fields, reason why the increase in oil production of current reservoirs is the main objective of oil companies. Thermal enhanced oil recovery processes have been studied, implemented and improved over the years. In the last decade there has been significant interest in the light oil air injection (LOAI) process since the successful implementation of the process known as High Pressure Air Injection in the Buffalo Field (USA), which is a variation from the air injection process in light oil, applicable to deep reservoirs with low permeability and porosity. Proof of this are the West Hackberry Field (USA), more than five commercial projects along the Willinston Basin (USA) and recently a pilot in the Zhong Yuan Field (China). Additionally, feasibility studies have also been initiated and performed in Mexico, Argentina and Colombia. This article proposes screening criteria for the selection of potential light oil reservoirs to be candidates for air injection, as well as a general methodology for the prioritization of the reservoirs with the highest LOAI implementation potential. Said methodology employs screening criteria, analogies and numerical simulation. The first part goes beyond the binary screening by assigning a weight to each one of the criteria, therefore resulting in a numerical ranking. For the analogies the reservoirs in which the technology has already been applied are grouped in four group types, against which the field on evaluation is compared. There is also a numerical simulation in 1D – 2D, where the injectivity with or without pressurization is evaluated, as well as the displacement stability. Additionally a multi-criteria evaluation method is used to select the best candidate.

Laboratory Studies and Implementation of In-Situ Combustion Initiation Technology for Air Injection Process in the Oil Reservoirs

2014 ◽  
Author(s):  
Valery Andreevich Klinchev ◽  
Vladislav Vyacheslavovich Zatsepin ◽  
Alexandra Sergeevna Ushakova ◽  
Sergey Vladimirovich Telyshev
Keyword(s):  
Air Injection ◽  
Oil Reservoirs ◽  
Laboratory Studies ◽  
In Situ Combustion ◽  
Injection Process

Numerical Simulation of the Air Injection Process in Low Permeability Reservoirs

2019 ◽  
Vol 54 (6) ◽  
pp. 788-794
Author(s):  
Fu Cheng ◽  
Zhu Tingting ◽  
Huang Bin ◽  
Zhang Wei ◽  
Wang Ying
Keyword(s):  
Numerical Simulation ◽  
Air Injection ◽  
Low Permeability ◽  
Injection Process ◽  
Low Permeability Reservoirs

Variation of reservoir fluid property during the high pressure air injection process

2015 ◽  
Vol 13 (2) ◽  
pp. 173-180 ◽  
Author(s):  
Yi-Bo Li ◽  
Wan-Fen Pu ◽  
Jiang-Yu Zhao ◽  
Qi-Ning Zhao ◽  
Lin Sun ◽  
...  
Keyword(s):  
High Pressure ◽  
Air Injection ◽  
Fluid Property ◽  
Injection Process ◽  
Reservoir Fluid
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