Results 41 to 50 of about 1,878,542 (168)

Performances of cryptographic accumulators [PDF]

39th Annual IEEE Conference on Local Computer Networks, 2014
Cryptographic accumulators are space/time efficient data structures used to verify if a value belongs to a set. They have found many applications in networking and distributed systems since their in- troduction by Benaloh and de Mare in 1993. Despite this popularity, there is currently no performance evaluation of the different existing de- signs ...
Kumar, Amrit, Lafourcade, Pascal, Lauradoux, Cédric   +2 more
openaire   +2 more sources

A case study of petrophysical rock typing and permeability prediction using machine learning in a heterogenous carbonate reservoir in Iran

Scientific Reports, 2022
Petrophysical rock typing (PRT) and permeability prediction are of great significance for various disciplines of oil and gas industry. This study offers a novel, explainable data-driven approach to enhance the accuracy of petrophysical rock typing via a ...
Erfan Mohammadian, Mahdi Kheirollahi, Bo Liu, Mehdi Ostadhassan, Maziyar Sabet   +4 more
doaj   +1 more source

Tectonic relationship between the Kelameili range and the Dajing depression: Insights into the Carboniferous tectonic-sedimentary framework

Petroleum Exploration and Development, 2020
Based on comprehensive analysis of typical outcrops, latest deep wells drilled and high resolution seismic profiles in the study area, we examined the geologic structure of the Kelameili range, and analyzed the structural relationship between the ...
Lei ZHANG, Dengfa HE, Zejun YI, Di LI
doaj   +1 more source

Transformation Mechanism of a Fault and Its Associated Microstructures in Low-Porosity Rocks: A Case Study of the Tanan Depression in the Hailar-Tamtsag Basin

Journal of Marine Science and Engineering, 2019
Faults have complex internal structures, which can be divided into the fault core and the damaged zone. During the fault formation process, the damaged zone will develop a large number of fractures cross cutting the adjacent host rocks, where the size ...
Ru Jia, Bo Liu, Xiaofei Fu, Lei Gong, Zhida Liu   +4 more
doaj   +1 more source

Determination of Trace Metal Elements in Solid Bitumen with Microwave Digestion by Inductively Coupled Plasma-Atomic Emission Spectrometry

Yankuang ceshi, 2013
Trace element information in crude oil and bitumen has been applied to oil and gas exploration and geochemical study, but the analysis methods of bitumen are limited and the pretreatment process is tedious.
MA Liang-bang, GE Ying
doaj  

Geological characteristics and resource potential of deep coalbed methane in Guizhou

Meitan xuebao
Accelerating the exploration and development of deep ( > 1 000 m)coalbed methane (CBM) resources is an important way for the large-scale development of CBM and an important development direction in recent years. Guizhou Province is rich in CBM resources,
Zhaobiao YANG, Wei GAO, Yong QIN, Mengjiang ZHANG, Cunlei LI, Zhihua YAN, Yuhui LIANG, Benju LU, Yilin CHEN, Caifang WU, Jie CHEN, Geng LI, Dexiu WEN   +12 more
doaj   +1 more source

Quantitative characterization of pore development and its application in shale oil reservoirs of the Qingshankou formation, Songliao basin

Scientific Reports
The pronounced multi-scale heterogeneity and complex wettability heterogeneity of shale oil reservoirs are key factors governing the distribution and flow behavior of fluids within the pore network. This study focuses on the Qingshankou Formation, Member
Boyang Wang, Mengjing Yin, Dengfu Yuan
doaj   +1 more source

Dynamic equations for nonassociated gas accumulation

Petroleum Exploration and Development, 2008
Nonassociated gas can be classified as conventional gas accumulation with displacement migration, source-contacting gas accumulation with piston-type migration, and shale gas accumulation with the displacement and piston-type migrations.
Jin-chuan ZHANG, Xuan TANG, Rui-kang BIAN, Bo XU, Hui XUE, Hai-kuan NIE, Sheng-ling JIANG   +6 more
doaj   +1 more source

Hypergraphs Accumulate

International Mathematics Research Notices
Abstract We showthat for every integer $k\geqslant 3$ the set of Turán densities of $k$-uniform hypergraphs has an accumulation point in $[0,1)$. In particular, $1/2$ is an accumulation point for the set of Turán densities of $3$-uniform hypergraphs.
Conlon, David, Schülke, Bjarne
openaire   +2 more sources

Solid-liquid organic matter interaction mechanism between kerogen and aromatic compounds

Shiyou shiyan dizhi
Under geological conditions, the initial generation of oil and gas in source rocks reaches saturation before being expelled and migrating, with the adsorption of hydrocarbons by kerogen being a key factor influencing oil saturation.
Xiaohui LIN, Tian LIANG, Yanrong ZOU, Cheng TAO, Yuan WANG   +4 more
doaj   +1 more source