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Zhangjiatan Shale

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Journal Article
Journal: Interpretation
Published: 06 February 2017
Interpretation (2017) 5 (2): SF109–SF126.
...Yuxi Yu; Xiaorong Luo; Ming Cheng; Yuhong Lei; Xiangzeng Wang; Lixia Zhang; Chengfu Jiang; Likuan Zhang Abstract Shale oil and gas have been discovered in the lacustrine Zhangjiatan Shale in the southern Ordos Basin, China. To study the distribution of extractable organic matter (EOM...
FIGURES | View All (16)
Journal Article
Journal: AAPG Bulletin
Published: 01 April 2015
AAPG Bulletin (2015) 99 (4): 661–687.
...Yuhong Lei; Xiaorong Luo; Xiangzeng Wang; Lixia Zhang; Chengfu Jiang; Wan Yang; Yuxi Yu; Ming Cheng; Likuan Zhang ABSTRACT Shale oil and gas have been discovered in the lacustrine organic-rich Zhangjiatan Shale of the Upper Triassic Yanchang Formation, Ordos Basin, China. Core observations indicate...
FIGURES | View All (16)
Journal Article
Journal: Interpretation
Published: 02 March 2017
Interpretation (2017) 5 (2): SF167–SF176.
... role in drilling shale gas wells and making plans for reservoir stimulation. We adopted ant tracking technology for 3D poststack reflective seismic waves to identify the size and distribution of high-angle structural fractures in the Zhangjiatan shale of the Yanchang Formation in the Ordos Basin, which...
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Image
The expulsion intensity of oil expelled from <span class="search-highlight">Zhangjiatan</span> <span class="search-highlight">Shale</span> downward to ...
Published: 15 November 2020
Figure 5. The expulsion intensity of oil expelled from Zhangjiatan Shale downward to the Chang 8 unit at (A) the end of the Jurassic and (B) the end of the Early Cretaceous.
Image
The prestack edge diffractive wave imaging of the <span class="search-highlight">Zhangjiatan</span> <span class="search-highlight">shale</span> in the ...
Published: 02 March 2017
Figure 7. The prestack edge diffractive wave imaging of the Zhangjiatan shale in the southeastern Ordos Basin showing two regions with abundant breakpoints (dark blue patches), southeast of well LP180 and south of well LP179.
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(a) Photographs of structural fractures in the <span class="search-highlight">Zhangjiatan</span> <span class="search-highlight">shale</span> of Yanhe O...
Published: 02 March 2017
Figure 2. (a) Photographs of structural fractures in the Zhangjiatan shale of Yanhe Outcrop displaying the high-angle and low-angle network fractures, (b) the high-angle shear fractures in the black shale, (c) the near east–west-trending and near north–south-trending conjugate fractures, and (d
Image
Fracture imaging by ant tracking in 3D seismic of the <span class="search-highlight">Zhangjiatan</span> <span class="search-highlight">shale</span> in ...
Published: 02 March 2017
Figure 8. Fracture imaging by ant tracking in 3D seismic of the Zhangjiatan shale in the southeastern Ordos Basin obviously showing that two regions, namely, southeast of well LP180 and south of well LP179, respectively, have more fractures than other regions.
Image
Image log profile of the <span class="search-highlight">Zhangjiatan</span> <span class="search-highlight">shale</span> in well Fuye3 (1273.0–1288.0 m) ...
Published: 02 March 2017
Figure 6. Image log profile of the Zhangjiatan shale in well Fuye3 (1273.0–1288.0 m) showing more conductive fractures (blue tadpole) and less resistive fractures (light blue tadpole).
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Network fractures in silty and clayey laminae of <span class="search-highlight">Zhangjiatan</span> <span class="search-highlight">Shale</span> (A) unde...
Published: 01 April 2015
Figure 16 Network fractures in silty and clayey laminae of Zhangjiatan Shale (A) under fluorescent light and (B) plane light under microscope.
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Chart showing chrono- and litho-stratigraphy, lithology, depositional envir...
Published: 01 April 2015
of Member 7 of the Yanchang Formation is the Zhangjiatan Shale.
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Rose diagrams for the trending of high-angle fractures in (a) the Zhangjiat...
Published: 02 March 2017
Figure 3. Rose diagrams for the trending of high-angle fractures in (a) the Zhangjiatan shale from the outcrops and (b) the image log interpretation showing a main trend near the east–west and a subordinate trend near the north–south.
Image
(a) Map showing the Ordos Basin in central China, (b) tectonic map of the O...
Published: 02 March 2017
Figure 1. (a) Map showing the Ordos Basin in central China, (b) tectonic map of the Ordos Basin showing the study area located in the Yishan slope, and (c) the isopach map of top Zhangjiatan shale in Yanchang Formation in the study area.
Image
Image log for the Chang-7 member in well Yanye22 showing scarce fractures i...
Published: 02 March 2017
Figure 9. Image log for the Chang-7 member in well Yanye22 showing scarce fractures in the Zhangjiatan shale, indicating that the interpretation agrees with the results (Figure  8 ) from ant tracking fractures in the 3D seismic wave and from edge diffractive wave imaging (Figure  7 ).
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Pore-size distribution (pore diameter     D     against     d  V  /  d     ...
Published: 01 April 2015
Figure 13 Pore-size distribution (pore diameter D against d V / d   log   D , D is pore diameter, d V / d   log   D is pore volume) of silty laminae (solid black lines) and adjacent clayey laminae (dotted lines) of Zhangjiatan Shale defined by low
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(a, b, and d) Photographs of fracture cores and (c and e) corresponding thi...
Published: 02 March 2017
Figure 5. (a, b, and d) Photographs of fracture cores and (c and e) corresponding thin section from Zhangjiatan shale, showing (a-c) the high-angle structural fracture and (d and e) the low-angle structural fracture in shale. (a) An open high-angle fracture was met at the depth of 1286–1286.5 m
Image
Frequency histograms of the fracture spacing (cm) for (a) the east–west-tre...
Published: 02 March 2017
Figure 4. Frequency histograms of the fracture spacing (cm) for (a) the east–west-trending fractures and (b) the north–south-trending fractures in the Zhangjiatan shale displaying that fracture spacing dominates at approximately 60 cm. Plot of fracture spacing (cm) and bedding thickness (cm
Image
(A) Map showing the Ordos Basin in central China. Box is the map area in (B...
Published: 01 April 2015
Figure 1 (A) Map showing the Ordos Basin in central China. Box is the map area in (B). (B) Tectonic map of the Ordos Basin, modified after C. F. Jiang et al. ( 2013a ). The study area in the southeastern part of Yi-Shan slope is outlined by a box. (C) Isopach map of Zhangjiatan Shale
Journal Article
Journal: Interpretation
Published: 18 April 2017
Interpretation (2017) 5 (2): SFi–SFii.
... in the position of the depocenter and contemporaneous deep lake facies. The authors also discuss two sets of source rocks with large shale oil potential in the upper Triassic Yanchang Formation. Shi et al. identify and predict the natural fractures in the Zhangjiatan shale of the Mesozoic Yanchang Formation...
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(A) and (B) Thickness and distribution of silty laminae in <span class="search-highlight">Zhangjiatan</span> Shal...
Published: 01 April 2015
Figure 3 (A) and (B) Thickness and distribution of silty laminae in Zhangjiatan Shale in Well W1. Per is the thickness percentage of silty laminae (blue), %; Den is the density of occurrence of silty laminae (green), laminae/m; Por is the porosity (red); wireline logs include gamma ray (GR, brown
Journal Article
Journal: AAPG Bulletin
Published: 15 November 2020
AAPG Bulletin (2020) 104 (11): 2247–2265.
...Figure 5. The expulsion intensity of oil expelled from Zhangjiatan Shale downward to the Chang 8 unit at (A) the end of the Jurassic and (B) the end of the Early Cretaceous. ...
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