Hydrocarbon expulsion potential of source rocks and its influence on the distribution of lacustrine tight oil reservoir, Middle Permian Lucaogou Formation, Jimsar Sag, Junggar Basin, Northwest China

2017 ◽  
Vol 149 ◽  
pp. 740-755 ◽  
Author(s):  
Hua Bai ◽  
Xiongqi Pang ◽  
Lichun Kuang ◽  
Hong Pang ◽  
Xulong Wang ◽  
...  
Keyword(s):  
Junggar Basin ◽  
Northwest China ◽  
Source Rocks ◽  
Middle Permian ◽  
Tight Oil ◽  
Oil Reservoir ◽  
Lucaogou Formation ◽  
Tight Oil Reservoir ◽  
Jimsar Sag ◽  
Hydrocarbon Expulsion

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 Characteristics of Micro Pore-throat of Tight Oil Reservoir in Permian Lucaogou Formation, Jimsar Sag

2015 ◽  
Vol 89 (s1) ◽  
pp. 112-113 ◽  
Author(s):  
Xiujie XUE ◽  
Yingchang CAO ◽  
Jian WANG ◽  
Kelai XI ◽  
Qingqing ZHANG
Keyword(s):  
Tight Oil ◽  
Oil Reservoir ◽  
Pore Throat ◽  
Lucaogou Formation ◽  
Tight Oil Reservoir ◽  
Jimsar Sag

Characteristics of Micro/Nano Pores and Hydrocarbon Accumulation in a Continental Shale Oil Reservoir—A Case Study of the Lucaogou Formation in the Jimsar Sag, Junggar Basin, Northwest China

2021 ◽  
Vol 21 (1) ◽  
pp. 262-273
Author(s):  
Jun Jin ◽  
Zhao Yang ◽  
Xuekun Chen ◽  
Lulu Li ◽  
Hongxia Yang ◽  
...  
Keyword(s):  
Junggar Basin ◽  
Ct Scanning ◽  
Northwest China ◽  
Oil Reservoir ◽  
Shale Oil ◽  
Pore Characteristics ◽  
Mercury Analysis ◽  
Lucaogou Formation ◽  
Jimsar Sag ◽  
Intercrystalline Pores

This paper comprehensively studies the micro- and nanometer-scale pore characteristics and structure of the Lucaogou Formation shale oil reservoir in the Jimsar Sag using high-pressure mercury analysis, field emission scanning electron microscopy and nano-CT scanning technology. In addition, the occurrence states of crude oil in pores are analyzed combined with macro–micro characteristics. The results show that there are various reservoir types; the main reservoir pore structure is on the micron and nanometer levels, with other void spaces including intergranular pores, interparticle dissolution pores, intercrystalline pores and microfissures. Nanopores are generally oil-bearing and mostly in the adsorption state, which changes the traditional understanding that micron pores are the only microscopic pores in the reservoir and confirms that shale oil exists in ‘sweet spots’ and mud-shale sections of the Lucaogou Formation.

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