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Changning Field

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Journal Article
Journal: AAPG Bulletin
Published: 01 October 2022
AAPG Bulletin (2022) 106 (10): 2073–2102.
...Yijun Zheng; Yuhong Liao; Yunpeng Wang; Yongqiang Xiong; Ping’an Peng ABSTRACT Changning and Fuling are two of the best-known shale gas fields in China, located at two different depositional centers of the Upper Ordovician Wufeng Formation to the lower Silurian Longmaxi Formation in the Sichuan...
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Journal Article
Published: 08 March 2023
Seismological Research Letters (2023) 94 (3): 1392–1404.
... provides some new observational evidence favoring that the M s 6.0 Changning earthquake and the related seismicity in Shangluo shale gas field were, respectively, induced by fluid injection for salt mining and hydraulic fracturing. Moreover, it is suggested that the shallow segment of the pre‐existing...
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Journal Article
Published: 15 December 2023
Journal of the Geological Society (2024) 181 (1): jgs2022-188.
... 2 O/Na 2 O ratios (1.01–2.57), they are enriched in large ion lithophile elements and depleted in high field strength elements. These rocks were therefore derived from partial crustal melting associated with subduction of the converging plate. Previous studies on the Changning–Menglian suture zone...
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Journal Article
Published: 28 July 2021
Seismological Research Letters (2021) 92 (6): 3757–3766.
... of this figure is available only in the electronic edition. Because there is a salt mine and a shale gas field in the Changning area, these earthquakes have been attributed to salt mining and shale gas exploration by numerous previous studies ( Ruan et al. , 2008 ; Sun et al. , 2017 ; Lei et al...
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Image
Geologic and seismotectonic background of the study area. (a) Major tectoni...
Published: 08 March 2023
from Lei et al. (2019b) . The upper right inset map in panel (b) shows a close‐up view of green rectangle in panel (b) indicating where the main anthropogenic infrastructures, including the residential area and salt mining field relative to the Changning earthquake sequence, are located. The color
Image
Distribution of gas <span class="search-highlight">fields</span>, isolines of Ro values, and shale thickness of t...
Published: 30 March 2015
Figure 1. Distribution of gas fields, isolines of Ro values, and shale thickness of the Longmaxi Fm. and locations of Changning profile samples used in the study, in Sichuan Basin, China ( Dai et al., 2014 ).
Journal Article
Journal: AAPG Bulletin
Published: 01 April 2024
AAPG Bulletin (2024) 108 (4): 663–689.
... m (328 ft) of black shale was deposited in the north-south–striking Mianyang-Changning intracratonic sag. The reservoir rock is composed of dolomitic algal mound-facies in the Dengying Formation. In the outcrop, the presence of dissolution features (vugs and caverns) and geochemical results...
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Journal Article
Published: 02 November 2021
Geological Magazine (2022) 159 (3): 337–356.
...Feng Cong; De-Feng He; Wei-Qiang Ji; Liang Huang; Bo Xiong; Shao-Hua Zhang; Xiao-Ming Huang Abstract The orogenic process and crustal growth of the Changning–Menglian Palaeo-Tethys orogenic belt in the southeastern Tibetan Plateau is not fully understood. Triassic Caojian rhyolites and granites...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2014
GSA Bulletin (2014) 126 (11-12): 1654–1682.
... geochronological, geochemical, and structural data to constrain the Paleotethyan tectonics of this belt. A detailed field study across three sections of the Sanjiang orogenic belt has identified two volcaniclastic successions separated by a regional angular unconformity in the northwestern segment, and one...
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Image
Background information on the 2019     M  s     6.0 <span class="search-highlight">Changning</span> earthquake se...
Published: 29 June 2022
lines represent regional active faults ( Deng et al. , 2003 ). The red arrows represent the Global Positioning System (GPS) velocity field ( Gan et al. , 2007 ). The red rectangle indicates the area shown in panel (b). (b) Distribution of the 2019 M s  6.0 Changning earthquake sequence
Journal Article
Published: 03 April 2019
Seismological Research Letters (2019) 90 (3): 1099–1110.
... with the front zone of the northward horizontal wells of an active shale gas pad (N201‐H24; Fig.  2 ). Based on a field survey, HF in this pad began in October 2018 and completed on 13 January 2019. After the M L  5.7 earthquake occurred, ongoing HF operations in Changning block had been paused for some...
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Journal Article
Journal: Geology
Published: 11 March 2024
Geology (2024) 52 (6): 441–446.
.... , Yang , W. , Gu , N. , and Miao , S. , 2023 , Tomographic evidences for hydraulic fracturing induced seismicity in the Changning shale gas field, southern Sichuan Basin, China : Earth and Planetary Science Letters , v. 605 , https://doi.org/10.1016/j.epsl.2023.118021 . Terakawa...
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Image
(A) Gas <span class="search-highlight">fields</span>, boreholes, and bitumen outcrops of Dengying Formation (Fm) ...
Published: 01 April 2024
Figure 2. (A) Gas fields, boreholes, and bitumen outcrops of Dengying Formation (Fm) across the Sichuan Basin, the Miyang-Changning intracratonic sag is shown in the blue area. (B) Eroded pinchout line of the Upper Sinian Dengying (Z 2 dn ), lower Cambrian, middle to upper Cambrian
Image
Simplified tectonics around the Sichuan Basin and preservation conditions o...
Published: 21 July 2022
in a high topography along the Longmenshan–Xianshuihe–Xiaojiang–Mabian tectonic belts. The low-altitude topography indicates weakly influenced related to the Himalayan movement. Purple lines indicate the organic-matter-rich shale isopach contours of WLF. Commercial shale gas fields with weak Cenozoic
Journal Article
Published: 29 June 2022
Seismological Research Letters (2022) 93 (5): 2599–2611.
... lines represent regional active faults ( Deng et al. , 2003 ). The red arrows represent the Global Positioning System (GPS) velocity field ( Gan et al. , 2007 ). The red rectangle indicates the area shown in panel (b). (b) Distribution of the 2019 M s  6.0 Changning earthquake sequence...
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Journal Article
Published: 21 July 2020
Bulletin of the Seismological Society of America (2020) 110 (5): 2138–2153.
... margin of the Sichuan basin (Fig.  1a ). Major geological structures in this field include the Changning anticline and Luochang‐Jianwu syncline, along with faults and folds of various scales. The background seismicity in this region is relatively low. In the last 2000 yr, only five earthquakes...
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Image
Comparison of δ 13 C 2  and δ 13 C 1  in conventional and shale gas from Si...
Published: 15 June 2019
Wei et al. (2014 , 2015b ) and Zhang et al. (2018) , respectively; data for natural gas from the Cambrian formation in the Weiyuan gas field were detected in this study; data for shale gas in the Weiyuan, Fuling, and Changning gas fields were collected from Dai et al. (2014) and Feng et al. (2016
Journal Article
Journal: Interpretation
Published: 17 November 2021
Interpretation (2022) 10 (1): T45–T56.
..., and the logging response: (1) There are graptolite-rich shale facies, siliceous shale facies, calcareous shale facies, and a small amount of argillaceous limestone facies in the deepwater shelf of the Weiyuan area and graptolite-rich shale facies and carbonaceous shale facies in the Changning area; (2...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 16 July 2022
Lithosphere (2022) 2022 (Special 12): 7102509.
... physical property test, rock mechanics experiment, and field emission scanning electron microscopy (FE-SEM) were carried out on graphitized and nongraphitized shales of Longmaxi Formation in Changning area, southern Sichuan Basin. The results indicate that organic matter graphitization is a result...
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Journal Article
Published: 25 January 2023
Seismological Research Letters (2023) 94 (3): 1379–1391.
... field considering the preexisting faults in sedimentary and in basement and the effect of the fully coupled poroelastic stress field. * Corresponding author: lurq127@sina.com 12 July 2022 © Seismological Society of America Since the Changning–Weiyuan National Shale Gas...
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