182 Result(s)
within
Earth Sciences
Zhi-**a Yang
-
Article
Training data selection using information entropy: Application to heating load modeling of rural residence in northern China
The selection of input variables and their amount has been an important issue in big data load forecasting. Taking heating load forecasting as an example, this paper proposed a method for data filtering based ...
-
Article
Evaluating the fracture resistance and drainage difficulty of coal reservoirs using log data
Evaluating the fracture resistance and drainage difficulty of a coal reservoir is essential in the coalbed methane (CBM) industry. In this study, the coal body structure and brittleness indices, as well as the...
-
Article
Seismic Signal Analysis Based on Adaptive Variational Mode Decomposition for High-speed Rail Seismic Waves
High-speed rails with determined length and load run for long periods at almost uniform speeds along fixed routes, constituting a new stable and repeatable artificial seismic source. Studies have demonstrated ...
-
Article
Multiphase evolution of a Li-pegmatite field from the Tashisayi area, Altyn Tagh, NW China: insights from a petrological, geochemical, and geochronological study
The Tashisayi Li deposit was newly discovered in the eastern part of the Tashisayi batholith, located in the Altyn Tagh region of Northwest China. A Li-rich composite pegmatite-aplite dyke (γ02) displays super...
-
Article
Geochronology and Geochemistry of Mesozoic Granites in the North Qilian Shan: Implications for Petrogenesis and Tectonic Setting
This paper documents the zircon U–Pb ages, whole-rock geochemistry, and Sr–Nd–Pb isotopes of the Mesozoic granites in the central part of the North Qilian Orogenic Belt to provide information on the tectonic e...
-
Article
Zircon U–Pb geochronologic, geochemical and Sr–Nd–Pb isotope characteristics of the Beidaban granites in the North Qilian Orogenic Belt: Petrogenesis and tectonic implications
The tectonic evolution and crustal accretion process of the North Qilian Orogenic Belt (NQOB) are still under debate because of a lack of integrated constraints, especially the identification of the tectonic t...
-
Article
Rock burst prevention and control of multifield coupling in longwall working face
This study numerically examines the evolution of the stress and displacement fields of rock sur-rounding an oblique normal fault in the longwall working face of a mine. The aim is to determine the law of activ...
-
Article
Numerical modeling of elastic waves using the random-enhanced QPSO algorithm
In this paper, we derive a random-enhanced quantum particle swarm optimization (QPSO) algorithm and develop a new finite difference (FD) scheme based on this algorithm. The random-enhanced QPSO algorithm has a...
-
Article
Contrasting range changes of Bergenia (Saxifragaceae) species under future climate change in the Himalaya and Hengduan Mountains Region
The Himalaya and Hengduan Mountains (HDM) are recognized as two global biodiversity hotspots, harboring the world’s richest alpine flora. However, to what extent the distribution of alpine plants here is affec...
-
Article
Research on a nonlinear hybrid optimal PSO microseismic positioning method
Impact ground pressure events occur frequently in coal mining processes, significantly affecting the personal safety of construction workers. Real-time microseismic monitoring of coal rock body rupture informa...
-
Chapter and Conference Paper
Application of Reservoir Simulation in Production and Development Management
At present, reservoir simulation is widely used in making reservoir development projects or reservoir adjustment projects. It is rarely used in reservoir production and development management. The main task of...
-
Chapter and Conference Paper
Geological Feasibility and Operating Index Design of Volatile Oil Reservoir into Underground Gas Storage: Case Study of M Block in Jidong Oilfield
At present, there is no precedent for reconstruction of Volatile Oil Reservoir into Underground Gas Storage (UGS) at home and abroad. Utilizes oil reservoirs to rebuild gas storage can fully utilize the mechan...
-
Chapter and Conference Paper
Exploration of Dynamic Analysis Technology to Oil-Type Underground Gas Storage - A Case Study of NanPu No.1 Gas Storage
At present, Most in-service underground gas storage are gas reservoir. Nanpu No.1 is the first gas storage reservoir in Jidong Oilfield, which develops gas reservoir, gas reservoir with oil ring and gas-top re...
-
Chapter and Conference Paper
Application of Adaptive VMD Algorithm in High-Speed Rail Seismic Signal Extraction
When a high-speed train is in motion, it causes vibrations in the railway tracks, resulting in seismic waves. However, the actual collected data also includes background noise from the Earth and various human ...
-
Chapter and Conference Paper
Development and Application of Real-Time Monitoring System for Fracturing and Acidizing Flowback Fluid
Fracturing and acidification are widely used as stimulation methods in conventional and unconventional fields. After the fracturing fluid or acid enters the formation, the fracturing fluid or acid enters the f...
-
Chapter and Conference Paper
Hydrocarbon Accumulation Pattern and Main Control Factor Analysis of Sandstone Reservoirs in the Kungurian Stage Salt Domes of K Oilfield
Salt dome formations are commonly recognized as high-quality regional cap rocks in petroleum-rich basins, but there has been limited discussion on the accumulation patterns of oil and gas within these formatio...
-
Chapter and Conference Paper
The Novel Compensated Sector Cement Bond Logging Technology and Application
The eight-sector cement bond logging tool is an effective logging technique to evaluate the quality of cement bond, which can identify the local deficiencies in the radial direction of the cement bond and the ...
-
Chapter and Conference Paper
Development and Application of Wireless Strain Test System in the Bearing Capacity Test of Oil Derrick
In order to ensure the safe production of oil drilling equipment, about 2000 sets of in-service oil drilling rigs and workover rigs need to be tested and evaluated every year, covering Daqing, Changqing, south...
-
Chapter and Conference Paper
Research on Capacity and Influencing Factors of Underground Gas Storage Transformed from Oil Reservoirs
After more than two decades of development, there have been 27 underground gas storage at home. The peak load regulation capacity reaches 14.7 billion m3, occupying 4.4% of the domestic natural gas consumption. T...
-
Chapter and Conference Paper
Experimental Study on Fracture Propagation of Tight Sandstone Under the True Triaxial Fracturing with Supercritical CO2
Supercritical CO2 fracturing is a novel fracturing technology that boasts significant benefits, including the reduction of reservoir pollution and the achievement of thorough backflow following the fracturing pro...
