Results 51 to 60 of about 30,179 (297)

Overcoming challenges in the classification of deep geothermal potential [PDF]

, 2015
The geothermal community lacks a universal definition of deep geothermal systems. A minimum depth of 400 m is often assumed, with a further sub-classification into middle-deep geothermal systems for reservoirs found between 400 and 1000 m.
Breede, K., Dzebisashvili, K., Falcone, G.   +2 more
core   +1 more source

New craniodental materials of Falcarius utahensis (Theropoda: Therizinosauria) reveal patterns of intraspecific variation and cranial evolution in early coelurosaurians

The Anatomical Record, EarlyView.
Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley   +1 more source

Influence of tight sandstone gas in roof on gas production in deep coalbed methane wells: A case study of Shenfu block in Ordos Basin [PDF]

Youqicang pingjia yu kaifa
In the Shenfu block located on the eastern margin of the Ordos Basin, the deep coal seam is intimately interlayered with the tight sandstone layer. During the development of deep coalbed methane, a notable phenomenon has been observed whereby tight ...
WANG Xiaodong, WANG Yuchuan, LIANG Xiaolei, KANG Lifang, CHAO Weiwei, LIU Shiqi, HUANG Fansheng, WANG Wenkai, LIANG Yu
doaj   +1 more source

True triaxial mechanical characteristics of tight sandstone with different oil and water staturation

地质科技通报, 2023
The occurrence of fluids such as water, oil or natural gas in tight sandstone reservoirs may affect the mechanical characteristics of tight sandstone. This paper selects tight sandstones of Yanchang Formation in Panlong area of Ordos Basin, and uses YSZS-
Pengxiang Xu, Xiangdong Chen, Zhao Liu, Xin Cheng, Yiqian Qu, Qiushi Li, Chunxiao Ma, Hanning Wu   +7 more
doaj   +1 more source

Characteristics of Tight Sandstone Cement in Panke Area

IOP Conference Series: Earth and Environmental Science, 2021
Abstract In order to improve the success rate of oil and gas exploration and further study the impact of tight sandstone cements on reservoirs, this paper uses a large number of rock thin sections, scanning electron microscopy, and physical property analysis to analyze the cements of the Chang 6 reservoir in the Panke area, southern ...
Yang Shasha, Yang Yong, Chen Ying, Xing Kuanhong, Liu Kaide   +4 more
openaire   +1 more source

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

The Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe, Phil R. Bell, Ian Baylatry, Robin Sissons, Corwin Sullivan   +4 more
wiley   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato, Luke E. Nelson, Joshua A. Doyon, Donald B. Brinkman, Alison M. Murray   +4 more
wiley   +1 more source

Distribution patterns of tight sandstone gas and shale gas

Petroleum Exploration and Development
Based on an elaboration of the resource potential and annual production of tight sandstone gas and shale gas in the United States and China, this paper reviews the researches on the distribution of tight sandstone gas and shale gas reservoirs, and ...
Jinxing DAI, Dazhong DONG, Yunyan NI, Deyu GONG, Shipeng HUANG, Feng HONG, Yanling ZHANG, Quanyou LIU, Xiaoqi WU, Ziqi FENG   +9 more
doaj   +1 more source

Growth Mechanism of Siliceous Cement in Tight Sandstone and Its Influence on Reservoir Physical Properties

Energies, 2018
To investigate the effect of siliceous cementation on the densification of sandstone and the forming process of tight sandstone, based on cathodoluminescence, scanning electron microscopy and thin section analysis, the growth mechanism and ...
Bo Jiu, Wenhui Huang, Jing Shi, Mingqian He   +3 more
doaj   +1 more source

Reservoir Characteristics of Tight Sandstone and Sweet Spot Prediction of Dibei Gas Field in Eastern Kuqa Depression, Northwest China

Energies, 2022
Great progress has been made in the exploration of tight sandstone gas resources in Kuqa depression. Great progress has been made in Dibei structural belt, which proves the previously unproven favorable area for tight sandstone gas.
Guangjie Zhao, Xianqing Li, Mancang Liu, Caiyuan Dong, Daye Chen, Jizhen Zhang   +5 more
doaj   +1 more source