Results 61 to 70 of about 779,949 (313)

BUILD UP TEST ANALYSIS OF THE HORIZONTAL WELL

open access: yesRudarsko-geološko-naftni Zbornik, 2013
Build up test analysis for the horizontal well is based upon the theory of fluid flow in the reservoir, which is mathematically described by the diffusivity equation of the three dimensional flow and its solutions.
Sonja Koščak Kolin   +2 more
doaj  

Methodology for horizontal well pattern design in anisotropic oil reservoirs

open access: yesPetroleum Exploration and Development, 2008
Anisotropic permeability has major effects on horizontal well networks. Well lines, horizontal sections of the wells, and the principal direction of anisotropic permeability should be parallel or perpendicular to each other, in which the horizontal well ...
Yue-tian LIU
doaj   +1 more source

Real‐World Performance of CSF Kappa Free Light Chains in the 2024 McDonald Criteria

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Kappa free light chains (KFLCs) in the cerebrospinal fluid (CSF) have a similar performance to CSF‐restricted oligoclonal bands (OCB) for multiple sclerosis (MS) diagnosis. To help with implementation, we set out to resolve several remaining uncertainties: (1) performance in a real‐world cohort and the 2024 McDonald criteria; (2 ...
Maya M. Leibowitz   +11 more
wiley   +1 more source

Horizontal Well Drilling Technique for Zahaquan Tight Oil

open access: yesShiyou jixie, 2016
To improve the overall tight oil development benefits,the first tight oil horizontal well was deployed in Qinghai Oilfield.But the long drilling period has impacted the tight oil development program with horizontal well.The key reasons of long horizontal
Hu Gui   +6 more
doaj  

'Horizontal' Wells [PDF]

open access: yesJournal of Range Management, 1973
W. T. Welchert, Barry N. Freeman
openaire   +1 more source

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu   +10 more
wiley   +1 more source

Advance of Horizontal Well Fracturing Technology in China

open access: yesShiyou jixie, 2016
Horizontal well fracturing technology has become the main technology for the stimulation of low permeability and ultra low permeability tight reservoirs.
Ding Qingxin   +3 more
doaj  

LOXHD1 and RHOB Expression by Monocytes Predicts Progressive Systemic Sclerosis associated Interstitial Lung Disease

open access: yesArthritis Care &Research, Accepted Article.
Objective A leading cause of death among scleroderma (SSc) patients, interstitial lung disease (ILD) remains challenging to prognosticate. The discovery of biomarkers that accurately determine which patients would benefit from close monitoring and aggressive therapy would be an essential clinical tool.
Cristina M Padilla   +13 more
wiley   +1 more source

Design of Spiral Wheel Horizontal Well Traction Robot

open access: yesShiyou jixie, 2016
In order to efficiently transport horizontal well operation tools, a spiral drive-based traction robot is designed. A support bar mechanism in parallelogram is proposed, and the screw nut adjusting mechanism and flexible spring support are adopted to ...
Wu Chaoqun   +4 more
doaj  

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