Results 21 to 30 of about 355,494 (269)

Sedimentology of reefal buildups of the Xiannüdong Formation (Cambrian Series 2), SW China

open access: yesJournal of Palaeogeography, 2019
The reefs in the Xiannüdong Formation (Cambrian Series 2) are the oldest archaeocyathan–microbial bioconstructions in China, but the details of their microbial structures have not been previously described.
Hao Tang   +7 more
doaj   +1 more source

THE AURAL RESERVOIR. [PDF]

open access: yesThe Lancet, 1886
n ...
openaire   +1 more source

Reservoir computing with noise

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2023
This paper investigates in detail the effects of measurement noise on the performance of reservoir computing. We focus on an application in which reservoir computers are used to learn the relationship between different state variables of a chaotic system. We recognize that noise can affect the training and testing phases differently.
Chad Nathe   +5 more
openaire   +4 more sources

Field developmental plan analysis: a case study of ‘x’ reservoir

open access: yesJournal of Petroleum Exploration and Production Technology, 2019
Petroleum resources remain very important to the economic growth of several nations of the world even as oil price fluctuates in the current market today.
Taiwo Oludele Osunrinde   +2 more
doaj   +1 more source

Failure analysis of long round thread in horizontal well casing under multi-axis loading [PDF]

open access: yesE3S Web of Conferences, 2020
The casing is subjected to complicated forces underground, and the threaded joint of the casing is the weak link of the casing. becoming more and more severe, various kinds of failure accidents often occur in practical use.
Tiejun Lin   +4 more
doaj   +1 more source

Strength analysis of perforated casing in ultra-deep horizontal shale wells during sublevel acidizing and hydraulic fracturing process

open access: yesAdvances in Mechanical Engineering, 2022
In the process of sublevel acidizing and fracturing, the non-uniform load on production casing is complex, and casing failure occurs frequently, which seriously affects the next step of production, stimulation, and underground safety of the oil and gas ...
Lian Zhanghua   +5 more
doaj   +1 more source

Experimental study of shale drillability with different bedding inclinations under varying wellbore pressure conditions

open access: yesJournal of Petroleum Exploration and Production Technology, 2021
In the practice of shale gas development engineering, it is important to understand the physical and mechanical properties of shale. The bedding inclinations of shale are known to significantly influence its physical and mechanical properties. This study
Shuai Chen   +4 more
doaj   +1 more source

Numerical Investigation of Hydraulic Fracture Propagation Morphology in the Conglomerate Reservoir

open access: yesGeofluids, 2022
The random distribution of gravels makes the conglomerate reservoir highly heterogeneous. A stress concentration occurs at the gravel-matrix interfaces owing to the embedded gravel and affects the local mechanical response significantly, making it ...
Zehao Xu, Xiangjun Liu, Lixi Liang
doaj   +1 more source

Characteristics and drainage modes of coalbed methane resources in closed coal mines in Yangquan and Jincheng Mining Areas

open access: yesMeitan kexue jishu
Affected by factors such as coal resources exhaustion, elimination of outdated and excess capacity, the number of closed coal mines in Shanxi Province has increased year by year, and the evaluation and exploration of closed or abandoned coal mine coalbed
Yang WANG   +6 more
doaj   +1 more source

In-material reservoir implementation of reservoir-based convolution

open access: yes2023 IEEE International Symposium on Circuits and Systems (ISCAS), 2023
This study aims to implement a reservoir-based convolutional neural network (CNN) on physical reservoir computing (RC) to develop an efficient image recognition system for edge AI. Therefore, we propose a novel reservoir-based convolution circuit system that uses in-material reservoir computing, a type of physical RC made from a sulfonated polyaniline ...
Yuichiro Tanaka   +3 more
openaire   +3 more sources

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