Seismic attribute-based characterization of a tight gas sand reservoir in the Ordos Basin, China

2014 ◽  
Author(s):  
Zhiguo Wang* ◽  
Jinghuai Gao ◽  
Bing Zhang ◽  
Daxing Wang
Keyword(s):  
Ordos Basin ◽  
Tight Gas ◽  
Seismic Attribute ◽  
The Ordos Basin

Application of 3D seismic attributes to optimize the placement of horizontal wells within a tight gas sand reservoir, Ordos Basin, China

Geophysics ◽  
2016 ◽  
Vol 81 (3) ◽  
pp. B77-B86 ◽  
Author(s):  
Zhiguo Wang ◽  
Jinghuai Gao ◽  
Xiaolan Lei ◽  
Xiaojie Cui ◽  
Daxing Wang
Keyword(s):  
Seismic Data ◽  
Ordos Basin ◽  
Horizontal Wells ◽  
Tight Gas ◽  
3D Seismic ◽  
Seismic Attribute ◽  
Horizontal Drilling ◽  
The Ordos Basin ◽  
Gas Bearing ◽  
3D Seismic Data

The Lower Permian Xiashihezi Formation in the Ordos Basin, China, is a quartz-sandstone reservoir with low porosity and low permeability. We have acquired 3D seismic data and well data from 18 vertical and four horizontal wells to indicate the potential of seismic attribute analyses in locating seismic sweet spots for lateral placement of horizontal wells. Using the analytic wavelet transform with a Morse wavelet, the integration of high tuning spectral components, high sweetness and high spectral attenuation helped us to estimate the distribution of gas-bearing tight sands in the Xiashihezi Formation. Our results revealed that the principal target of horizontal drilling and production was gas-bearing massive point bars in the braided river delta setting of the Ordos Basin. The integrated workflow of the seismic attribute analysis contributes to the optimal horizontal well planning by mining and exposing critical geological information of a tight gas sand reservoir from within 3D seismic data.

scholarly journals Imaging‐Based Characterization of Perthite in the Upper Triassic Yanchang Formation Tight Sandstone of the Ordos Basin, China

2019 ◽  
Vol 93 (2) ◽  
pp. 373-385 ◽  
Author(s):  
Shuheng DU ◽  
Guoxin SHI ◽  
Xinjian YUE ◽  
Gen KOU ◽  
Bo ZHOU ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Upper Triassic ◽  
Tight Sandstone ◽  
Yanchang Formation ◽  
The Ordos Basin

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.

Charging time of tight gas in the Upper Paleozoic of the Ordos Basin, central China

2013 ◽  
Vol 64 ◽  
pp. 38-46 ◽  
Author(s):  
Yanhua Shuai ◽  
Shuichang Zhang ◽  
Jingkui Mi ◽  
Se Gong ◽  
Xuanjun Yuan ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Central China ◽  
Tight Gas ◽  
Charging Time ◽  
Upper Paleozoic ◽  
The Ordos Basin

Geochemical characteristics of tight gas and gas-source correlation in the Daniudi gas field, the Ordos Basin, China

2017 ◽  
Vol 79 ◽  
pp. 412-425 ◽  
Author(s):  
Xiaoqi Wu ◽  
Quanyou Liu ◽  
Jianhui Zhu ◽  
Kuang Li ◽  
Guangxiang Liu ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Geochemical Characteristics ◽  
Tight Gas ◽  
Gas Field ◽  
Gas Source ◽  
Source Correlation ◽  
The Ordos Basin

Geochemical and Geological Characterization of Marine‐Continental Transitional Shale: A Case Study in the Ordos Basin, NW China

2020 ◽  
Vol 94 (3) ◽  
pp. 809-821
Author(s):  
Zhifu WEI ◽  
Gen WANG ◽  
Yongli WANG ◽  
Xueyun MA ◽  
Ting ZHANG ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Nw China ◽  
The Ordos Basin
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