Numerical Simulation of the Characteristics of Mud Invasion and Residual Oil Distribution in Low Permeability Reservoir

2016 ◽  
Author(s):  
Y.J. Jiang ◽  
J.M. Sun ◽  
J.S. Gao
Keyword(s):  
Numerical Simulation ◽  
Low Permeability ◽  
Residual Oil ◽  
Low Permeability Reservoir ◽  
Oil Distribution

Non-Darcy flow numerical simulation of XPJ low permeability reservoir

2012 ◽  
Vol 92-93 ◽  
pp. 40-47 ◽  
Author(s):  
Rongze Yu ◽  
Yanan Bian ◽  
Yang Li ◽  
Xiaowei Zhang ◽  
Jun Yan ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Darcy Flow ◽  
Low Permeability ◽  
Low Permeability Reservoir

Research on Horizontal Well Hydraulic Fracture Crack Initiation Law of Low Permeability Reservoir

2014 ◽  
Vol 670-671 ◽  
pp. 728-731
Author(s):  
Su Ling Wang ◽  
Ying Zhang ◽  
Guo Feng Zhao ◽  
Si Qi Wang ◽  
Shan Ren Zhang
Keyword(s):  
Numerical Simulation ◽  
Crack Initiation ◽  
Hydraulic Fracture ◽  
Horizontal Well ◽  
Damage Mechanics ◽  
Influence Factor ◽  
Low Permeability ◽  
Construction Technology ◽  
Low Permeability Reservoir ◽  
Initiation Pressure

Horizontal well hydraulic fracture construction technology has already become the main development means of low permeability reservoir, and the crack initiation pressure is a key factor in fracture construction. Taking ABAQUS as the platform, combined with rock mechanics, elastic mechanics, fracture mechanics, damage mechanics and fluid-solid coupling theory, to establish horizontal well mechanical model, crack initiation law of horizontal well under different conditions were obtained by using finite element method. According to the horizontal well fracture tested data in Daqing peripheral oil fields, the crack initiation pressure and numerical simulation results are in good agreement, it shows that the numerical simulation method is reasonable, then analyze influence factor of crack initiation pressure on the basis.

scholarly journals The residual oil distribution regularity of low permeability oilfield

Petroleum ◽  
2015 ◽  
Vol 1 (2) ◽  
pp. 112-117
Author(s):  
Huan Zhao ◽  
Hongjun Yin
Keyword(s):  
Low Permeability ◽  
Residual Oil ◽  
Oil Distribution

Research on Residual Oil Distribution Regular with the Application of Facies Controlled Modeling and Reservoir Numerical Simulation

2012 ◽  
Vol 616-618 ◽  
pp. 126-132 ◽  
Author(s):  
Hua Bin Wei ◽  
Shang Ming Shi ◽  
Pan Zhao ◽  
Dong Kai Huo ◽  
Wan Zhen Zhu
Keyword(s):  
Numerical Simulation ◽  
Three Dimensional ◽  
Simulation Method ◽  
Structural Features ◽  
Development Stage ◽  
Water Flooding ◽  
Residual Oil ◽  
Distribution Law ◽  
North West ◽  
Oil Distribution

The high water cut stage on the residual oil distribution regularity in late development stage of oilfield is difficult in Daqing oilfield, North West Water Flooding fine demonstration zone development time is long, well under the complicated characteristic, adopts phase control of three-dimensional geological modeling and the method of reservoir numerical simulation in the demonstration zone, structural features and sedimentary characteristics of based on the establishment of demonstration zone, three-dimensional geological model. Through the application of fine reservoir numerical simulation method for the numerical simulation of remaining oil, and a summary of the demonstration zone of residual oil distribution law and cause of formation, provides reliable basis for the next step of oilfield development adjustment.

Nonlinear flow numerical simulation of low-permeability reservoir

2012 ◽  
Vol 19 (7) ◽  
pp. 1980-1987 ◽  
Author(s):  
Rong-ze Yu ◽  
Ya-nan Bian ◽  
Shu Zhou ◽  
Kai-jun Wang ◽  
Qi Lü ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Nonlinear Flow ◽  
Low Permeability ◽  
Low Permeability Reservoir

Numerical Simulation of Stimulated Volume in Low-Permeability Reservoir

2013 ◽  
Vol 734-737 ◽  
pp. 1415-1419
Author(s):  
Zhen Yu Liu ◽  
Tian Tian Cai ◽  
Hu Zhen Wang ◽  
Cheng Yu Zhang
Keyword(s):  
Numerical Simulation ◽  
Reference Value ◽  
Simulation Method ◽  
Fracture Network ◽  
Gas Production ◽  
Low Permeability ◽  
Flow State ◽  
Low Permeability Reservoir ◽  
Complex Fracture ◽  
Low Permeability Reservoirs

There is an increasing focus on the effective methods to develop low-permeability reservoirs, especially for ultra-low permeability reservoirs. It is hard to achieve the expected stimulation effect only on the traditional single fracturing, because of the poor supply ability from the matrix to fracture in low-permeability reservoirs. Volume stimulating to reservoir, achieving short distance from matrix to fracture because of producing fracture network. So the volume fracturing technology proposed for increasing oil or gas production, this technology is suitable for low porosity and low permeability reservoir. The conventional simulation method can't describe the complex fracture network accurately,but this paper established hydraulic fracturing complex fracture model based on the finite element numerical simulation method , making the simulated complex fracture more close to the real description,it can accurately describe the flow state in the reservoir and cracks.It has an important reference value to the low permeability reservoirs.

scholarly journals Immiscible CO2 Flooding Efficiency in Low-Permeability Reservoirs: An Experimental Investigation of Residual Oil Distribution

2021 ◽  
Vol 9 ◽  
Author(s):  
Ying Yang ◽  
Xiao-Feng Zhou ◽  
Le-Yin Sun ◽  
An-Lun Wang ◽  
Jian-guang Wei ◽  
...  
Keyword(s):  
Distribution Patterns ◽  
Low Permeability ◽  
Residual Oil ◽  
Displacement Efficiency ◽  
Oil Displacement ◽  
Core Samples ◽  
Oil Distribution ◽  
Oil Displacement Efficiency ◽  
Low Permeability Reservoirs ◽  
Ultralow Permeability

Residual oil distribution plays a critical role in understanding of the CO2 flooding processes, but its quantitative research for reservoirs with different permeability levels rarely has been comprehensively conducted in the laboratory. This article presents the results of an experimental study on the immiscible CO2 displacement efficiency in different permeability core samples and various oil distribution patterns prior to and after immiscible CO2 flooding. Experiments were conducted on four core samples extracted from the selected oil field with a permeability range from 0.210–66.077 mD. The experimental results show that the immiscible CO2 can mobilize oil in ultralow-permeability environment and achieve a reasonable displacement efficiency (40.98%). The contribution of different oil distribution patterns to displacement efficiency varies in reservoirs with different permeabilities. With the increase of core permeability, the contribution of cluster and intergranular pore oil distribution patterns to displacement efficiency increases. However, the oil displacement efficiency of corner and oil film patterns tends to increase with lower permeability. Therefore, immiscible CO2 flooding is recommended for ultralow-permeability case, especially for reservoirs with larger amount of oil in corner and oil film distribution patterns. The oil displacement efficiency calculated by immiscible CO2 flooding experiment results agrees reasonably well with the core frozen slices observation. The results of this study have practical significance that refers to the effective development of low-permeability reservoirs.

scholarly journals Productivity Prediction Model of Vertical Artificial Fracture Well and Analysis of Influence Factor in Low Permeability Reservoir

2015 ◽  
Vol 8 (1) ◽  
pp. 420-426 ◽  
Author(s):  
Chengli Zhang ◽  
Dezhi Liang ◽  
Daiyin Yin ◽  
Guoliang Song
Keyword(s):  
Numerical Simulation ◽  
Pressure Gradient ◽  
Influence Factor ◽  
Low Permeability ◽  
Oil Well ◽  
Low Permeability Reservoir ◽  
Fracture Length ◽  
Capacity Model ◽  
Start Up ◽  
Artificial Fracture

Based on the analysis of seepage mechanism of fracturing wells in low permeability reservoir, this paper establishes the capacity model of the vertical fractured well production under the factors of Start-up pressure gradient, pressure sensitive effect and the artificial fracture length. The numerical simulation is compiled and software calculates the capacity model by using numerical simulation. This simulation technique verifies the validity of the model and numerical method. On this basis, we study the influence of the included angle of artificial fracture and well array direction, artificial fracture length, start-up pressure gradient and production pressure difference to the capacity of the oil well.

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