Experimental investigation of water flooding characteristics and residual oil distribution in filled attic caves reservoir

2021 ◽  
pp. 1-21
Author(s):  
Aifen Li ◽  
Wanjiang Guo ◽  
Shuaishi Fu ◽  
Jacqueline Nangendo ◽  
Haojun Xie ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Water Flooding ◽  
Residual Oil ◽  
Oil Distribution

Residual Oil Distribution Law and Controlling Factors of Chang 6 Reservoir in Liutai Area

2014 ◽  
Vol 1010-1012 ◽  
pp. 1735-1739
Author(s):  
Feng Run Zhang ◽  
Ai Hua Guo ◽  
Huai En Cai
Keyword(s):  
Sedimentary Facies ◽  
Geological Structure ◽  
Controlling Factors ◽  
Water Flooding ◽  
Residual Oil ◽  
Distribution Law ◽  
Total Recovery ◽  
Main Layer ◽  
Oil Distribution ◽  
Distribution Laws

Because of the high heterogeneity, late water flooding and irregular well network, the distribution law of residual oil reserve in Chang 6 reservoir becomes much complicated. Combining the geology with dynamics of the reservoir, volumetric and formation coefficient methods are adapted to calculated the residual reserves, and then the distribution laws and controlling factors are analyzed. The results indicate that: there are still large amounts of residual reserve in main layer Chang 622; the residual reserve can be classified into three kinds, Class I and class II are distributed concentrative in main layer; the controlling factors include property, sedimentary facies, heterogeneity, well network controlling and geological structure and so on. Finally, according to the distribution laws and controlling factors, targeted measures are proposed. The studying results provide well foundations for improving recovery of residual oil reserves and the total recovery of the reservoir.

scholarly journals Quantitative Study of Residual Oil Distribution during Water Flooding through Digital Core Analysis

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Xuechao Liu ◽  
Dazhong Ren ◽  
Fengjuan Dong ◽  
Junxiang Nan ◽  
Ran Zhou
Keyword(s):  
Ct Scanning ◽  
Water Flooding ◽  
Fluid Distribution ◽  
Core Analysis ◽  
Residual Oil ◽  
Tight Sandstone ◽  
Oil Storage ◽  
Oil Distribution ◽  
Distribution Features ◽  
Digital Core

The character of residual oil formed during water flooding, one important technique to enhance oil recovery, is helpful to further study permeability and recovery in tight sandstone oil reservoirs. In this paper, we take a tight sandstone reservoir in Ordos Basin as the research object and use in situ displacement X-CT scanning technology to analyze the dynamic characteristics of oil during water flooding. Firstly, core pore radius and oil storage space radius were measured from digital cores which are acquired in different water flooding stages by X-CT scanning technology. Secondly, analytical and evaluation methods were established to describe fluid distribution in the pore space of the core in different water flooding stages based on curve similarity. Finally, by numerical results, we analyzed the oil distribution features in the process of water flooding for core samples. In this paper, the oil distribution characteristics during water flooding are revealed based on digital core analysis. Also, a quantitative evaluation method is given to provide theoretical guidance.

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.

scholarly journals Determination of Residual Oil Distribution after Water Flooding and Polymer Flooding

2013 ◽  
Vol 5 (8) ◽  
pp. 2642-2647
Author(s):  
Yining Wang ◽  
Xiaodong Wu ◽  
Fengpeng Lai ◽  
Zhaopeng Yang ◽  
Man Teng
Keyword(s):  
Polymer Flooding ◽  
Water Flooding ◽  
Residual Oil ◽  
Oil Distribution

The Influence of Microscopic Pore Structure on Microscopic Residual Oil in Sandstone Reservoir

2013 ◽  
Vol 787 ◽  
pp. 721-725 ◽  
Author(s):  
Yan Zhang ◽  
Xin Li
Keyword(s):  
Pore Structure ◽  
Water Flooding ◽  
Structure Effect ◽  
Residual Oil ◽  
Thin Sections ◽  
Unresolved Problem ◽  
Oil Distribution ◽  
Cluster Type ◽  
Sandstone Reservoir ◽  
Different Origin

The distribution of microscopic residual oil varied according to the character of rock pore structure. How pore structure effect residual oil distribution is still an unresolved problem. In this paper, different origin samples were collected, then the characters of microscopic pore structure was analyzed with mercury injection curves, casting thin sections and SEM. The character of microscopic residual oil was observed with fluorescence thin sections. The study showed that after strong water flooding, the microscopic residual oil was mainly composed of intergranular type and cluster type residual oil, but the proportion of different type of residual oil varied according to different microscope pore structure. the smaller the radius of pore structure is, the higher the proportion of intergranular type and cluster type remaining oil is, but the lower the proportion of corner type, membranous type and throat type is.

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