Results 111 to 120 of about 15,990 (252)

Tight Sandstone Gas Reservoir Types and Formation Mechanisms in the Second Member of the Xujiahe Formation in the Anyue Area, Sichuan Basin

open access: yesEnergies
With the advancement of oil and gas exploration and development, tight sandstone gas has become a major current exploration field. However, the effective development of tight sandstone gas faces significant challenges due to the strong heterogeneity of ...
Lin Jiang   +11 more
doaj   +1 more source

Forchheimer Model for Non-Darcy Flow in Porous Media and Fractures [PDF]

open access: yes, 2011
Imperial Users ...
Takhanov, Dastan, Takhanov, Dastan
core  

Thorncliffe Formation: A proglacial to subglacial lacustrine basin sequence, Greater Toronto Region, Canada

open access: yesBoreas, EarlyView.
Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe   +3 more
wiley   +1 more source

Deep Groundwater Total Dissolved Solids Mapping in the Dakota Group, Williston Basin, USA

open access: yesGroundwater, EarlyView.
Abstract Growing concern about the quantity of available freshwater around the world has led to interest in surveying groundwater total dissolved solids (TDS) below water well depths. Deep TDS has not been systematically mapped, and there is much to learn about the distribution and controls on deeper groundwater. In sedimentary basins across the United
Michael J. Stephens   +3 more
wiley   +1 more source

Development characteristics of microfractures in tight sandstone reservoir and its influence on physical properties: A case study of Shiligiahan zone in Hangjinqi

open access: yesYouqicang pingjia yu kaifa, 2022
The average porosity and permeability of sandstone of Lower Shihezi Formation of Permian system in Shilijiahan area of Hangjinqi area are of 8.3 % and 0.89×10-3 μm2 respectively, causing the reservior to be a typical tight sandstone reservoir. Meanwhile,
ZHAO Lan
doaj  

Freshwater fishes of the Waterberg aquatic ecoregion, South Africa: Diversity, taxonomic conflicts and conservation concerns

open access: yesJournal of Fish Biology, EarlyView.
Abstract Southern Africa is a region denoted by both high levels of fish diversity, some of it cryptic and unrecognised by current taxonomy, and severely threatened freshwater ecosystems. The Waterberg, a key aquatic ecoregion of the greater Limpopo River basin in South Africa, represents an area with high terrestrial conservation value but is lacking ...
Darragh J. Woodford   +7 more
wiley   +1 more source

Microplastic Dynamics in Sediment Layers of Two Ramsar‐Designated Wetlands

open access: yesWater and Environment Journal, EarlyView.
ABSTRACT Little is known about the vertical and spatial dynamics of microplastics in relation to hydrology and land use, particularly in African context. This study aimed to assess the abundance, type, colour and vertical distribution of microplastics in sediment from two Ramsar‐designated wetlands, the Makuleke and Nylsvley. Sediment core samples were
Nelisiwe Ngomane   +7 more
wiley   +1 more source

Sweet spot prediction in tight sandstone reservoir based on well-bore rock physical simulation

open access: yesPetroleum Science, 2019
To establish the relationship among reservoir characteristics and rock physical parameters, we construct the well-bore rock physical models firstly, considering the influence factors, such as mineral composition, shale content, porosity, fluid type and ...
Hai-ting Zhou   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy