Results 31 to 40 of about 418 (183)

Habitat and Haplotype-Specific Genetic Vulnerability Analysis Combined With a Multidimensional Scoring System Provides a New Insight for Conservation Prioritization of <i>Ephedra przewalskii</i>. [PDF]

Ecol Evol
This study assesses the vulnerability and adaptive capacity of Ephedra przewalskii populations using ensemble species distribution models and Climate‐Niche Factor Analysis, integrating climate and human activity data. It reveals that habitat fragmentation and shrinkage are exacerbated by climate change and anthropogenic activities, with varying genetic
Wang H, Ma Q, Wang L, Li Y, Cheng M, Li X, Yang G, Sun K, Chi X.   +8 more
europepmc   +2 more sources

Mobile 2D NMR quantitative evaluation method and its application at shale oil wellsite: A case study of the second member of Funing Formation, Subei Basin

Youqicang pingjia yu kaifa
Porosity and oil saturation are critical parameters in shale oil reservoir evaluation, but current laboratory measurements face challenges. In contrast, using wellsite mobile two-dimensional nuclear magnetic resonance (2D NMR) measurements can minimize ...
ZOU YOULONG, LI JUN, LIU JILONG, GUO BAOXIN, WANG LIANG   +4 more
doaj   +2 more sources

Geological conditions and enrichment patterns of helium reservoir in Yancheng Formation, Huangqiao area, Subei Basin

Shiyou shiyan dizhi
The helium (He) content in the natural gas of the Neogene Yancheng Formation in the Huangqiao area of Subei Basin ranges from 1.05% to 1.40%, which is generally higher than the industrial grade, indicating a crust and mantle composite type of helium ...
Hongsheng YAO, Xingming CHEN, Tao ZHOU
doaj   +2 more sources

Microbial Community Composition and Function in Jiangsu Oil Reservoir Cores, China. [PDF]

Environ Microbiol Rep
Shale oil reservoirs meet the basic requirements for microbial growth. Microorganisms, crude oil and water are distributed within the pore spaces of the reservoir formation. In situ microorganisms utilise crude oil for growth and reproduction. ABSTRACT Shale oil reservoirs are typically characterised by elevated temperatures, confined spaces and ...
Wang BW, Liu YF, Chen LG, Wang B, Qian ZH, Yang F, Cai JC, Zhou L, Yang SZ, Gu JD, Mu BZ.   +10 more
europepmc   +2 more sources

Biological–physical oceanographic coupling influencing particulate organic matter in the South Yellow Sea

Frontiers in Marine Science, 2022
Using total suspended matter (TSM), particulate organic carbon (POC), and particulate nitrogen data, this study investigated the potential vertical POC flux and transport in the South Yellow Sea (SYS). The biogenic production and resuspension fraction (i.
Congcong Guo, Shu Yang, Weidong Zhai, Weidong Zhai, Yao Niu, Chunli Liu   +5 more
doaj   +1 more source

Experimental study of oil matrix and fracture flow capacity of shale oil in Subei Basin

Youqicang pingjia yu kaifa
Shale oil reservoirs present complex pore structures and ultra-low permeability, making the evaluation of flow capacity in both the reservoir matrix and various fracture types after fracturing crucial for developing effective work systems. In this study, the Brazilian splitting method was utilized to simulate different fracture morphologies.
DUAN Hongliang,SHEN Tingshan,SUN Jing,HONG Yafei,LI Sichen,LU Xianrong,ZHANG Zhengyang
openaire   +3 more sources

Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin

Youqicang pingjia yu kaifa
Recent exploration within the second member of Funing Formation（hereinafter referred to as Fu-2 member）in Gaoyou Sag of Subei Basin has marked a significant advancement in the understanding of shale oil potential, highlighting its role in enhancing future reserves and production.
SUN Yaxiong,ZHU Xiangyu,QIU Xuming,LIU Qidong,DUAN Hongliang,QIU Yongfeng,GONG Lei
openaire   +3 more sources

Exploration strategies for complex fault block reservoirs in the Subei basin

Petroleum Science, 2007
The geological background of the Subei basin is that of small relief subsidence, low geothermal gradient, multi-sedimentary hiatuses, intense reconstruction of the basin, frequent magmatic activity, and a unique combination of source rock and reservoir. This geological background resulted in characteristics such as many small fault blocks, multiple oil-
Liu Xiaoping, Yang Xiaolan, Liu Yurui
openaire   +1 more source

Source identification and health risks of nitrate contamination in shallow groundwater: A case study in Subei Lake basin

Environmental Science and Pollution Research, 2022
Abstract Nitrate pollution in groundwater has become a global concern as it can affect the drinking water quality and human health. In this paper, an extensive hydrochemical investigation and health risk were performed in the Subei Lake basin where shallow groundwater is the main available drinking water resource for residents.
Zijun, Li, Qingchun, Yang, Chuan, Xie, Xingyu, Lu   +3 more
openaire   +2 more sources

Logging evaluation of shale oil in the second member of Funing Formation of Qintong Sag, Subei Basin

Youqicang pingjia yu kaifa
The efficient evaluation of the oil properties, capabilities, and compressibility of reservoirs using conventional logging data is essential for the large-scale development of shale oil in northern Jiangsu. Utilizing conventional logging data alongside core experiment data, this study develops a robust model to calculate several critical reservoir ...
WANG Xin,HAN Jianqiang,ZAN Ling,LI Xiaolong,PENG Xingping
openaire   +3 more sources