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Leikoupo Formation

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Journal Article
Journal: AAPG Bulletin
Published: 15 January 2019
AAPG Bulletin (2019) 103 (1): 1-29.
...Dengfa He; Yongsheng Ma; Yingqiang Li; Shunli Wu ABSTRACT The discovery of carbonate gas fields in the Middle Triassic Leikoupo Formation of the Sichuan Basin has a complex history. In recent years, a series of structural fields have been discovered in the western Sichuan Basin. Their discovery...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 2018
AAPG Bulletin (2018) 102 (12): 2599-2628.
...Lei Jiang; Suyun Hu; Wenzhi Zhao; Zhaohui Xu; Shuyuan Shi; Qilong Fu; Hongliu Zeng; Wei Liu; András Fall ABSTRACT The uppermost Middle Triassic Leikoupo Formation in the western Sichuan Basin of China has recently been shown to host as much as 5.3 tcf (1.5 × 10 12 m 3 ) of natural gas resources...
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Distribution of the Middle Triassic <b>Leikoupo</b> <b>Formation</b> strata in the Sichua...
Published: 15 January 2019
Figure 1. Distribution of the Middle Triassic Leikoupo Formation strata in the Sichuan Basin. Major structures are numbered as follows: 1, Zhongba; 2, Qinglinkou; 3, Laoguanmiao; 4, Yuanba; 5, Longgang; 6, Longfengchang; 7, Xinchang; 8, Yazihe; 9, Jinma; 10, Shiyangzhen; 11, Sumatou; 12, Daxing
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Distribution of source rocks contributing to the <b>Leikoupo</b> <b>Formation</b> gas res...
Published: 15 January 2019
Figure 11. Distribution of source rocks contributing to the Leikoupo Formation gas reservoir in the Sichuan Basin: (A) isopach map of upper Permian carbonate source rocks, (B) isopach map of upper Permian argillaceous (coal-bearing) source rocks, (C) isopach map of Leikoupo Formation carbonate
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Stratigraphic sections of some typical <b>Leikoupo</b> <b>Formation</b> reservoirs in the...
Published: 15 January 2019
Figure 12. Stratigraphic sections of some typical Leikoupo Formation reservoirs in the Sichuan Basin. (A) Moxi gas pool, long-range upward migration and accumulation model, with upper Permian Longtan Formation (P 3 l ) as the source rock and Middle Triassic Lei-1-1 submember (T 2 l 1 1
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Classification of <b>Leikoupo</b> <b>Formation</b> (Fm.) exploration plays in the Sichuan...
Published: 15 January 2019
Figure 14. Classification of Leikoupo Formation (Fm.) exploration plays in the Sichuan Basin.
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Summary map of the <b>Leikoupo</b> <b>Formation</b> shoal dolomite play in the Sichuan Ba...
Published: 15 January 2019
Figure 15. Summary map of the Leikoupo Formation shoal dolomite play in the Sichuan Basin. Structural units are labeled as follows: in the western Sichuan depression, I 1 is the northern segment, I 2 is the central segment, and I 3 is the southern segment; in the central Sichuan uplift, II 1
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Summary map of the <b>Leikoupo</b> <b>Formation</b> karstic dolomite play in the Sichuan ...
Published: 15 January 2019
Figure 16. Summary map of the Leikoupo Formation karstic dolomite play in the Sichuan Basin. Structural units are labeled as follows: in the western Sichuan depression, I 1 is the northern segment, I 2 is the central segment, and I 3 is the southern segment; in the central Sichuan uplift, II 1
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Sequence (Seq.) stratigraphy and lithology of <b>Leikoupo</b> <b>Formation</b>. Modified ...
Published: 01 December 2018
Figure 2. Sequence (Seq.) stratigraphy and lithology of Leikoupo Formation. Modified from Li et al. (2014) . T 2 l 4 3 = upper fourth member of the Leikoupo Formation; T 2 l 4 1-2 = lower fourth member of the Leikoupo Formation; T 2 l 3 3 = upper third member of the Leikoupo Formation; T 2
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Photomicrographs showing other lithofacies in uppermost <b>Leikoupo</b> <b>Formation</b>....
Published: 01 December 2018
Figure 6. Photomicrographs showing other lithofacies in uppermost Leikoupo Formation. (A) Ooid packstone to grainstone. Grains consist mainly of dolomudstone. Isopachous, medium-crystalline dolomite cement and coarse-crystalline, calcite cement fill, interparticle pores. Well Longgang (LG) 168
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Paragenetic sequence of the uppermost <b>Leikoupo</b> <b>Formation</b> in Sichuan Basin s...
Published: 01 December 2018
Figure 7. Paragenetic sequence of the uppermost Leikoupo Formation in Sichuan Basin summarizing major diagenetic products of seawater, meteoric, shallow-burial, mesogenetic to deep-burial, and uplift diagenesis, as well as porosity in each diagenetic realm and their effects on reservoir quality
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Lithology, texture, lithofacies, and porosity of the uppermost <b>Leikoupo</b> For...
Published: 01 December 2018
Figure 3. Lithology, texture, lithofacies, and porosity of the uppermost Leikoupo Formation in three representative wells from Longgang gas field area: (A) well Longgang (LG) 168, (B) well LG 19, and (C) well LG 163. GR = gamma ray.
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Sedimentary facies during deposition of members different of the <b>Leikoupo</b> F...
Published: 15 January 2019
Figure 3. Sedimentary facies during deposition of members different of the Leikoupo Formation in the Sichuan Basin: (A) depositional environments of the Lei-1 Member, (B) depositional environments of the Lei-2 Member, (C) depositional environments of the Lei-3 Member, and (D) depositional
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Lithology and lithofacies association from lowest Middle Triassic <b>Leikoupo</b> ...
in > Geology
Published: 04 January 2019
Figure 1. Lithology and lithofacies association from lowest Middle Triassic Leikoupo Formation (Sichuan Basin, China), where regional chronostratigraphic constraint on boundary between Anisian and Olenek is presence of 0.5–3-m-thick green pisolite layer (depth in m). Note typical thin-section
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Stratigraphic correlation of the Changxing to Feixianguan <b>formations</b> across...
Published: 01 October 2014
geobodies of the good dolomite reservoirs on the northeast side of Kaijiang–Liangping Bay are much better developed than on the southwest side. Top seals are anhydrite-bearing and halite-bearing carbonate strata of the overlying uppermost Triassic Feixianguan, Jialingjiang, and Leikoupo formations.
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Carbon and oxygen isotopic compositions of various types of carbonate miner...
Published: 01 December 2018
Figure 16. Carbon and oxygen isotopic compositions of various types of carbonate minerals from the uppermost Leikoupo Formation in Sichuan Basin. VPDB = Vienna Peedee belemnite.
Journal Article
Journal: Interpretation
Published: 27 July 2017
Interpretation (2017) 5 (4): T461-T475.
... – 244 . Xu Z. Hu S. Zeng H. Fu Q. Wang L. , 2016 , Integrated study of dolomitization in an evaporite platform evidenced by 3-D seismic data and rock analysis: Middle Triassic Leikoupo Formation in Longgang Area, Sichuan Basin, China : AAPG Datapages/Search and Discovery...
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Journal Article
Journal: Interpretation
Published: 13 December 2018
Interpretation (2018) 7 (1): T127-T139.
... . Liu H. Tang Y. Z. Tan X. C. He B. Tang S. Zhou Y. J. Lin B. , 2018 b, Paleogeomorphological reconstruction and geological implications of the weathered-crust karst on the top of the middle Triassic Leikoupo formation in the Longgang area, Sichuan Basin, China : Energy...
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Journal Article
Journal: Interpretation
Published: 15 January 2018
Interpretation (2018) 6 (1): T191-T208.
... variations so that the fault system cannot be clearly imaged on the seismic profile. Interpretations of this fault system are difficult. (3) The legacy seismic data were acquired targeting the shallow formations above the Xujiahe and Leikoupo Formations in the Triassic with a small shot-receiver distance...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 2014
AAPG Bulletin (2014) 98 (5): 947-973.
... layers in the Lower Triassic Jialingjiang Formation and the middle Lower Triassic Leikoupo Formation. Quartz is commonly present in pores closely associated with TSR calcite; this suggests that quartz growth was synchronous with TSR calcite (Figure  6E , F ). Quartz crystals are typically euhedral...
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