Design of Spiral Wheel Horizontal Well Traction Robot
Shiyou 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
Real‐World Performance of CSF Kappa Free Light Chains in the 2024 McDonald Criteria
Annals 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
Development of Intelligent Water Distributor for Horizontal Well
Shiyou jixie, 2017 Considering that the separate section water injection for horizontal well stimulation is still in the preliminary exploration stage, and there are some problems such as high cost of measurement and adjustment in the later period and incapable of ...
Wang Wei +3 more
doaj
Well spacing optimization technology for coalbed methane horizontal wells
Meitian dizhi yu kantanBackgroundWell spacing design directly affects the resource utilization and exploitation benefits of blocks. Rational well spacing design plays a significant role in the commercial exploitation of coalbed methane (CBM) fields.
Yuting WANG +10 more
doaj +1 more source
Effects of a Multistage Fractured Horizontal Well on Stimulation Characteristics of a Clayey Silt Hydrate Reservoir. [PDF]
ACS Omega, 2022 Han J, Ma X, Pan D.
europepmc +1 more source
Annals 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
Key Technologies and Understanding of Shale Gas Horizontal Well Drilling of Well JY10HF
Shiyou jixie, 2019 Well JY10HF is the first exploratory shale gas horizontal well in the Jinfoshan fault slope of Nanchuan. The developed fracture and cave, large dip angle and poor drillability make it easy to be faced with lost circulation, wellbore collapse, inclination
Fan Hua, Long Zhiping
doaj
Methodology for horizontal well pattern design in anisotropic oil reservoirs
Petroleum 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
Semi-analytical solution for bottomhole pressure transient analysis of a hydraulically fractured horizontal well in a fracture-cavity reservoir. [PDF]
Sci Rep, 2022 Hailong L.
europepmc +1 more source
Inverse Modelling to Obtain Head Movement Controller Signal [PDF]
, 1984 Experimentally obtained dynamics of time-optimal, horizontal head rotations have previously been simulated by a sixth order, nonlinear model driven by rectangular control signals.
Hannaford, B. +3 more
core +1 more source