Numerical simulation of the seismic response of oil and gas reservoirs

2011 ◽  
Author(s):  
Danielle dos Santos ◽  
Marques Marco Antonio Cetale Santos ◽  
Jorge Leonardo Martins
2016 ◽  
Vol 68 ◽  
pp. 07003 ◽  
Author(s):  
Liangchuan Li ◽  
Jianyi Huang ◽  
Cheng Luo ◽  
Fanglan Du ◽  
Yi Liu

2021 ◽  
Vol 143 (8) ◽  
Author(s):  
Yun Han ◽  
Kewen Li ◽  
Lin Jia

Abstract A large number of oil wells have been or will be abandoned around the world. Yet, a very large amount of oil and energy is left behind inside the rocks in abandoned reservoirs because of technological and economic limitations. The residual oil saturation is usually more than 40%, and in shale reservoirs it can be more than 90%. There have been many enhanced oil recovery methods developed to tap the residual oil and improve the oil recovery. Interestingly, a concept has been proposed to transfer abandoned oil and gas reservoirs into exceptional enhanced geothermal reservoirs by oxidizing the residual oil with injected air (Li and Zhang, 2008, “Exceptional Enhanced Geothermal Systems From Oil and Gas Reservoirs,” 43rd Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, CA). This methodology was referred to as an exceptional enhanced geothermal system (EEGS). However, zero CO2 production has not been achieved during the process of EEGS. To this end, numerical models of EEGS in abandoned oil reservoirs configured with vertical wells were established in the present study. Numerical simulations in different well configurations were conducted. The effects of well distance, perforation position, and formation permeability on the CO2 production and the reservoir temperature have been investigated. The numerical simulation results showed that when the depth difference between the production and the injection well perforation positions reaches a specific value, the daily CO2 production rate could be kept at almost zero for over 50 years or even permanently while producing oil and thermal energy continuously. This implies that we realized the concept of EEGS with no CO2 successfully using numerical simulation.


2015 ◽  
Vol 75 (11) ◽  
Author(s):  
Mostafa Alizadeh ◽  
Zohreh Movahed ◽  
Radzuan Junin ◽  
Rahmat Mohsin ◽  
Mehdi Alizadeh ◽  
...  

The purpose of modelling the fractures is to create simulation properties with the power to predict the reservoir behaviour. Petrel software is one of the best softwares in the market that can do this task very well, but there is no available educational paper for every researcher. Therefore, in this work, a fracture modelling job was done in one of the most important Iranian fields using Petrel software and image log data. The purpose of this work was  to determine the new information of the fractures in Gachsaran field and also to prepare a valuable educational paper for other researchers who are interested to learn about the fracture modelling. This work revealed that in this field, the longitudinal fractures had been parallel to minimum stress (Zagros trend), fracture intensity was the nearest to the major fault and northern flank, fracture porosity was 0-7%, fracture permeability was 0-6000 MD, and more valuable information is provided in this paper.


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