Results 31 to 40 of about 430,784 (291)

Modeling fluctuating pressure in the eccentric annulus with a four-parameter rheological method

open access: yesEnergy Reports, 2022
The existing calculation models of fluctuating pressure are mainly based on Bingham fluid, power-law fluid and Heba fluid. These rheological models have certain limitations in the scope of application, and it is difficult to accurately describe the ...
Zhikun Liu   +4 more
doaj   +1 more source

Tight Oil Developments in Russia [PDF]

open access: yes, 2013
Oil production from Russia’s core regions is in decline and the government is keen to encourage the development of fields in new areas in order to keep the country’s output above 10mmbpd. A series of joint ventures between state oil company Rosneft and various IOCs offshore in the Arctic has caused much excitement in this regard, but the potential of ...
openaire   +3 more sources

A fixed combination of probiotics and herbal extracts attenuates intestinal barrier dysfunction from inflammatory stress in an in vitro model using Caco-2 cells. [PDF]

open access: yes, 2019
Background: Inflammatory Bowel Diseases (IBD), are considered a growing global disease, with about ten million people being affected worldwide. Maintenance of intestinal barrier integrity is crucial for preventing IBD onset and exacerbations. Some recent
Biagi, M   +8 more
core   +1 more source

Unconventional gas: potential energy market impacts in the European Union [PDF]

open access: yes, 2012
In the interest of effective policymaking, this report seeks to clarify certain controversies and identify key gaps in the evidence-base relating to unconventional gas.
ALECU Corina   +11 more
core   +1 more source

Development characteristics and orientation of tight oil and gas in China

open access: yesPetroleum Exploration and Development, 2019
Through reviewing the development history of tight oil and gas in China, summarizing theoretical understandings in exploration and development, and comparing the geological conditions and development technologies objectively in China and the United ...
Longde SUN   +6 more
doaj   +1 more source

Classification of microscopic pore-throats and the grading evaluation on shale oil reservoirs

open access: yesPetroleum Exploration and Development, 2018
: On the basis of the characterization of microscopic pore-throats in shale oil reservoirs by high-pressure mercury intrusion technique, a grading evaluation standard of shale oil reservoirs and a lower limit for reservoir formation were established ...
Shuangfang LU   +7 more
doaj   +1 more source

A novel approach of tight oil reservoirs stimulation based on fracture controlling optimization and design

open access: yesPetroleum Exploration and Development, 2020
: To deal with the stress interference caused by simultaneous propagation of multiple fractures and the wettability reversal and physical property changes of the reservoir caused by fracturing fluid getting in during large-volume fracturing of tight oil ...
Qun LEI   +7 more
doaj   +1 more source

Microscale Mineral and Pore Structure Characterization of the Low-Permeability Sandstone in the Ordos Basin, China

open access: yesAdvances in Civil Engineering, 2021
Given the insufficient understanding of the characteristics and controlling factors of the low-permeability sandstone reservoir in the Heshui area, the Ordos Basin, the present study examined the microscale mineral and pore structure of Chang 2 reservoir.
Jie Gao   +7 more
doaj   +1 more source

The Economic and Budgetary Effects of Producing Oil and Natural Gas From Shale [PDF]

open access: yes, 2014
[Excerpt] Recent advances in combining two drilling techniques, hydraulic fracturing and horizontal drilling, have allowed access to large deposits of shale resources—that is, crude oil and natural gas trapped in shale and certain other dense rock ...
Congressional Budget Office
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

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