Advanced Modeling of Horizontal Well Performance Under Different Re-fracturing Designs in Tight Oil Reservoir

2019 ◽  
Author(s):  
Zhengdong Lei ◽  
Xinping Yang ◽  
Xiaoshan Li ◽  
Die Hu ◽  
Yushu Wu ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Tight Oil ◽  
Oil Reservoir ◽  
Well Performance ◽  
Tight Oil Reservoir

Integrated Formation Evaluation of a Complex Tight Oil Reservoir in Junggar Basin, Northwest China

2014 ◽  
Vol 1073-1076 ◽  
pp. 2286-2291
Author(s):  
Fang Fang Wu ◽  
Jin Chuan Zhang ◽  
Hao Zhang ◽  
Jin Long Wu
Keyword(s):  
Horizontal Well ◽  
Structural Model ◽  
Low Cost ◽  
Junggar Basin ◽  
Northwest China ◽  
Reservoir Quality ◽  
Tight Oil ◽  
Oil Reservoir ◽  
Horizontal Section ◽  
Tight Oil Reservoir

Jimusaer tight oil reservoir is characterized by complex lithology, low permeability and high total organic carbon (TOC) content. These features make conventional logging responses very complicated and bring big troubles to reservoir identification. Horizontal well drilling is extremely difficult due to high heterogeneity and uncertain faulting. To maximize oil production with low cost, an integrated solution is provided. First, accurate reservoir characteristics of the pilot well was got using an unconventional evaluation approach by combining capture spectroscopy log, micro-resistivity imager log, nuclear magnetic resonance log, et al. Second, structure analysis for sidetracking well and well correlation between the sidetracking well and the pilot well were done to guide the horizontal section drilling. Third, reservoir quality and completion quality were evaluated for horizontal well, and a 3D structural model was built to optimize the stimulation design by combining reservoir quality, completion quality and natural fractures.

scholarly journals An analytical model for pressure of volume fractured tight oil reservoir with horizontal well

2017 ◽  
Author(s):  
Qihong Feng ◽  
Kaiwen Dou ◽  
Xianmin Zhang ◽  
Xiangdong Xing ◽  
Tian Xia
Keyword(s):  
Analytical Model ◽  
Horizontal Well ◽  
Tight Oil ◽  
Oil Reservoir ◽  
Tight Oil Reservoir

The Study of CO2 Flooding of Horizontal Well with SRV in Tight Oil Reservoir

2014 ◽  
Author(s):  
H.. Wang ◽  
X.. Liao ◽  
X.. Zhao ◽  
H.. Ye ◽  
X.. Dou ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Ordos Basin ◽  
Gas Injection ◽  
Tight Oil ◽  
Oil Reservoir ◽  
Co2 Flooding ◽  
Vertical Wells ◽  
Injection Volume ◽  
Fractured Horizontal Well ◽  
Tight Oil Reservoir

Abstract As one kind of unconventional reservoirs, tight oil reservoir has become one of the main forces of oil reserves and production growth. The characteristics of tight oil reservoir are low porosity and ultra-low permeability, thus stimulated reservoir volume (SRV) should be conducted whether applying the mode of vertical wells or horizontal wells production. Tight oil reservoir is mostly developed by natural depletion or water flooding recently, but the problems are existed, including low recovery factor with natural depletion and the difficulty of water injection. To further improve the development effect of tight oil reservoir, CO2 flooding is proposed. Based on chang-8 tight oil reservoir in Ordos Basin, an oil sample of typical block is selected. The PVT experiments are conducted. The compositional numerical model of five-spot pattern is established with a horizontal well in the middle and 4 vertical wells on the edge. Based on the model, several CO2 flooding scenarios of horizontal well with different completion measures are studied. Furthermore, parameters such as the formation pressure, production rate, shut-in gas-oil ratio and total gas injection volume are optimized. The results of this study show that the recovery factor of horizontal well with SRV is higher than those of horizontal well and conventional fractured horizontal well. The minimum miscible pressure (MMP) and the total gas injection volume are two key factors of CO2 flooding effect. CO2 flooding of volume fractured horizontal well in tight oil reservoir can not only improve oil recovery, but also realize CO2 geological sequestration. It plays dual benefits of economy and environment. The study gives new ideas of CO2 flooding with volume fractured horizontal well for the Ordos Basin tight oil reservoir. It can be helpful for rapid and effective development of tight oil reservoirs in Ordos Basin.

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