Results 21 to 30 of about 3,985,369 (146)

Origin of structurally controlled hydrothermal dolomite in epigenetic karst system during shallow burial: An example from Middle Permian Maokou Formation, central Sichuan Basin, SW China

open access: yesPetroleum Exploration and Development, 2016
Based on the outcrops, drilling cores, thin sections observation and geochemical analysis, studies were done on the genesis of dolomite in the Middle Permian of central Sichuan Basin. Mosaic fine-crystalline dolomite and subhedral-euhedral siliceous fine-
Hong LIU   +8 more
doaj   +2 more sources

Application of “high-fidelity and high-resolution” processing technology in thin reservoir identification: A case study of the deep Permian Maokou Formation in Penglai area, central Sichuan [PDF]

open access: yesYouqicang pingjia yu kaifa
The deep Permian Maokou Formation in the Penglai area, central Sichuan, is located in the Sichuan Basin. It is a sedimentary formation primarily composed of carbonate rocks, with dolomite being the main lithology.
PENG HAOTIAN   +7 more
doaj   +3 more sources

Acid fracturing technology of Maokou Formation in well-Dashi-1HF, southeastern Chongqing

open access: yesYouqicang pingjia yu kaifa, 2020
Significant advances has been made in the exploration and development of deep gas reservoirs in the southeastern Chongqing, especially the deep shale gas.
LEI Lin, ZHANG Longsheng, XIONG Wei
doaj   +2 more sources

Distribution and genesis of the Maokou Formation dolomite in Fengdu-Shizhu area, eastern Sichuan Basin

open access: yesEnergy Exploration & Exploitation
To investigate the development laws and genesis of the Maokou Formation dolomite in the Fengdu-Shizhu area, we analyzed core, thin section, logging, and geochemical data, and obtained the following understandings: 1.
Fabo Xu   +8 more
doaj   +2 more sources

Identification of Strike-Slip Faults and Their Control on the Permian Maokou Gas Reservoir in the Southern Sichuan Basin (SW China): Fault Intersections as Hydrocarbon Enrichment Zones

open access: yesEnergies
The Middle Permian Maokou Formation carbonate rocks in the southern Sichuan Basin are import targets for hydrocarbon exploration, with numerous gas fields discovered in structural traps.
Jiawei Liu   +7 more
doaj   +2 more sources

Geological significance of late Mid-Permian stratigraphy in northern and eastern Sichuan Basin, SW China

open access: yesShiyou shiyan dizhi, 2021
The Mid-Permian Maokou Formation in the Sichuan Basin shows good petroleum prospectivity. However, knowledge of the stratigraphy in the northern and eastern Sichuan Basin during the late Maokou period are still unclear.
Qianying YAO   +7 more
doaj   +1 more source

Permian Large Igneous Provinces and Their Paleoenvironmental Effects

open access: yesGeophysical Monograph Series, Page 417-434., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jun Chen, Yi‐Gang Xu
wiley  

+1 more source

Fine Detection and Analysis of Hidden Karst in Wellsite with Quasi‐Three‐Dimensional TDEM Based on Lateral Constraint

open access: yesGeofluids, Volume 2023, Issue 1, 2023., 2023
Considering that karst caves, underground rivers, and dissolution fractures in shallow carbonate formation in the Sichuan Basin are extremely developed, leakage, failure and plugging difficulties are easy to occur in the drilling process. The TDEM was used to carry out the exploration of hidden karst geological bodies in well QM2, and the quasi‐three ...
Bin Wu   +9 more
wiley   +1 more source

Drilling Parameter Optimization of Shale Gas Wells Based on Saw‐Tooth Genetic Algorithm to Reduce Drilling Costs

open access: yesGeofluids, Volume 2023, Issue 1, 2023., 2023
It is difficult to optimize the drilling parameters, which makes it difficult to reduce drilling costs in the process of drilling shale gas wells in the Fuling region of Chongqing, China. This paper takes the optimization combination of drilling parameters in drilling engineering as the research object and uses a saw‐tooth genetic algorithm to perform ...
Kai Bai   +5 more
wiley   +1 more source

A Study on Excavation Characteristics of Tunnel with Upper‐Soft Lower‐Hard Stratum

open access: yesGeofluids, Volume 2022, Issue 1, 2022., 2022
In view of the geological environment, in which the upper part is the “soft” layer of completely weathered siliceous rock and the lower part is the “hard” layer of weakly weathered limestone, the rail surface line is designed to pass through the interface between the upper “soft” layer and lower “hard” layer.
Jun Feng   +3 more
wiley   +1 more source

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