Research on petrophysical characteristics and pre-stack inversion of tight gas reservoirs in Ordos Basin, China

2007 ◽  
Author(s):  
Q. Shouli ◽  
Z. Jinqiang ◽  
S. Jianquo and Z. Xiaoying
Keyword(s):  
Ordos Basin ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs

Diagenetically induced heterogeneity of tight gas reservoirs near Zizhou (Ordos Basin, eastern China)

2022 ◽  
pp. 217-243
Author(s):  
Mi Li ◽  
Yinghai Guo ◽  
Zhuangfu Li ◽  
Huaichang Wang ◽  
A.J. (Tom) van Loon
Keyword(s):  
Eastern China ◽  
Ordos Basin ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs

Sulige field in the Ordos Basin: Geological setting, field discovery and tight gas reservoirs

2008 ◽  
Vol 25 (4-5) ◽  
pp. 387-400 ◽  
Author(s):  
Hua Yang ◽  
Jinhua Fu ◽  
Xinshan Wei ◽  
Xinshe Liu
Keyword(s):  
Ordos Basin ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
Geological Setting ◽  
The Ordos Basin

scholarly journals A novel productivity evaluation approach based on the morphological analysis and fuzzy mathematics: insights from the tight sandstone gas reservoir in the Ordos Basin, China

2019 ◽  
Vol 10 (4) ◽  
pp. 1263-1275
Author(s):  
Shanyong Liu ◽  
Gongyang Chen ◽  
Yishan Lou ◽  
Liang Zhu ◽  
Daoyao Ge
Keyword(s):  
Ordos Basin ◽  
Gas Content ◽  
Practical Significance ◽  
Fuzzy Mathematics ◽  
Tight Gas ◽  
Test Results ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
Morphological Theory ◽  
The Ordos Basin

AbstractTight gas reservoirs have rich potential resources, which are hot spots in unconventional oil and gas exploration and development. Due to their strong heterogeneity and complex pore structures, the conventional approaches of productivity evaluation always have difficulty in predicting the gas content. This study aims to devise a new method to interpret the productivity of LX Block in the Ordos Basin using the morphological theory and fuzzy mathematics. First, core test results were used to investigate the reservoir quality and physical properties. Then, the change law of gas content was defined by the morphological theory of logging and mud logging curves. Assignments of those factors that affected the final production were provided based on fuzzy mathematics. Finally, the prediction model of productivity was established. The results show that the lower limit of the reservoir thickness in the LX Block is 3.1 m, whereas the porosity and permeability are 5% and 0.15 × 10−3 μm2, respectively. The morphological characteristic of the gas logging curve for those layers with high potential production normally presents a box shape with a high relative number of serration. The reservoir in the studied area can be classified into four categories according to the relationship between the logging curve shape and daily production, and each category is automatically identified. The coincidence rate between the prediction results and the gas test results is 84.1%, which satisfies the demand on the field. The findings have important theoretical and practical significance for screening the location of fracturing spots and predicting the production of tight gas reservoirs.

scholarly journals Seismic prediction method of pore fluid in tight gas reservoirs, Ordos Basin, NW China

2017 ◽  
Vol 44 (4) ◽  
pp. 544-551 ◽  
Author(s):  
Hua YANG ◽  
Daxing WANG ◽  
Mengbo ZHANG ◽  
Yonggang WANG ◽  
Lihui LIU ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Prediction Method ◽  
Pore Fluid ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
Nw China ◽  
Seismic Prediction

scholarly journals Pore structure and fractal characteristics of a tight gas sandstone: A case study of Sulige area in the Ordos Basin, China

2018 ◽  
Vol 36 (6) ◽  
pp. 1438-1460 ◽  
Author(s):  
Hao Wu ◽  
Youliang Ji ◽  
Ruie Liu ◽  
Chunlin Zhang ◽  
Sheng Chen
Keyword(s):  
Pore Structure ◽  
Ordos Basin ◽  
Tight Gas ◽  
Pore Throat ◽  
Gas Reservoirs ◽  
Throat Radius ◽  
Tight Gas Reservoirs ◽  
Fractal Characteristics ◽  
Rate Controlled ◽  
The Ordos Basin

To understand the pore structure and fractal characteristics of tight gas reservoirs, thin sections, nuclear magnetic resonance, rate-controlled mercury injection, microcomputed tomography scanning, and field emission scanning electron microscopy investigations under laboratory conditions were conducted on a suite of core samples from the Middle Permian Shihezi Formation of Sulige area in the Ordos Basin, China. The investigated tight gas sandstones comprise three types of pores, i.e. residual intergranular pore, secondary dissolution pore, and micropore. The pore–throat size distribution is extremely wide and multiscale (10 nm–400 μm) co-existing in tight gas reservoirs. The submicron- and micron-scale pore–throats with radius above 0.05 μm, which are characterized by combining rate-controlled mercury injection with nuclear magnetic resonance, are considered to be the effective pores and throats that dominated the reservoirs flow capacity. Tight gas sandstones have stage fractal characteristics, and the intrusion pressure of approximately 1 MPa is regarded as an inflection point. Fractal dimension is negatively correlated with permeability, average throat radius and mainstream throat radius, positively correlated with heterogeneous coefficient, while there are no obvious relationships with porosity and average pore radius. Additionally, the percolation characteristics of tight gas reservoirs can be characterized by fractal structure. When the pore structure does not follow the fractal structure (i.e. intrusion pressure is lower than 1 MPa), the mercury intrusion saturation is dominated by pores; in contrast, the mercury intrusion saturation is almost solely dominated by throats. This research sheds light on the pore–throat size distribution of tight gas reservoirs by identifying the role of multiple techniques and the relationships between the pore structure parameters and percolation characteristics of tight gas reservoirs and fractal dimension.

Data Acquistion and Formation Evaluation Strategies in Anistrospic, Tight Gas Reservoirs

2008 ◽  
Author(s):  
Hans de Koningh ◽  
Bernd Heinrich Herold ◽  
Koksal Cig ◽  
Fahd Ali ◽  
Sultan Mahruqy ◽  
...  
Keyword(s):  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
Formation Evaluation ◽  
Evaluation Strategies ◽  
Data Acquistion

Underbalanced Drilling Technology for Unconventional Tight Gas Reservoirs

2014 ◽  
Author(s):  
Hani Qutob ◽  
Khelil Kartobi ◽  
Abdelaziz Khlaifat
Keyword(s):  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
Underbalanced Drilling ◽  
Drilling Technology
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