Results 31 to 40 of about 9,817 (229)
Downhole measurement: MWD [PDF]
, 1991 Measurement While Drilling (MWD) now becoming an important method of measuring the downhole parameters and transmitting the informations to the surface while drilling in operation at almost real time.
Abdul Razak, Mohd. Razif
core
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT Multi‐supported non‐structural components (NSCs) are prone to seismic damage, yet their response prediction remains challenging when support motions are spatially incoherent. This study proposes an enhanced quasi‐static condensation (EQSC) method for linear, lightweight, dynamically detuned multi‐supported NSCs under the neglect of primary ...
Duozhi Wang +5 more
wiley +1 more source
Directional drilling technology with mud pulse wireless MWD in underground coal mine
Meikuang Anquan, 2021 The directional drilling technology with mud pulse wireless MWD in coal mine was presented. We introduce the principle of the technology and analyze three key technologies: the wireless MWD with mud pulse, the compound directional drilling and the ...
LI Quanxin, CHU Zhiwei, XU Chao, FANG Jun
doaj +1 more source
Microbiological Mechanisms of Sand‐Mixed Soil Improvement in Continuously Cropped Soil
Land Degradation &Development, EarlyView.ABSTRACT Sand‐mix soil is a widely adopted method for soil improvement in agricultural production. However, beyond the evident enhancement of physical structure, the mechanisms by which sand‐mix soil promotes crop root growth by influencing soil physicochemical properties and microbial communities remain insufficiently understood.
Yue Huang +11 more
wiley +1 more source
Macromolecular Rapid Communications, EarlyView.This work presents a structure‐aware graph convolutional network that models polymers as statistical ensembles to predict macroscopic properties. By combining topologically realistic graphs generated via kinetic Monte Carlo simulations with explicit molar mass distributions, the framework achieves high accuracy in classifying architectures and ...
Julian Kimmig +7 more
wiley +1 more source
Innovative EM MWD technology facilitates exploitation of unconventional reservoirs
, 2010 Electromagnetic wave measurement while drilling (EM MWD) systems have historically seen less widespread use compared to mud pulse telemetry due to inherent limits—notably depth and formation characteristics and the limited capability for offshore ...
Ma Zhe +5 more
core +1 more source
Development of a near-bit MWD system. Phase 2 -- Final report [PDF]
, 1996 The program objective was to develop a Near-Bit Measurement-While-Drilling (MWD) system which collects borehole directional data and formation parameters directly at the drill bit-rock interface and transmits this information electromagnetically to a ...
McDonald, W. J., Pittard, G. T.
core +1 more source
Modeling n‐Butyl Acrylate Polymerization using Complementary Modeling Techniques
Macromolecular Reaction Engineering, EarlyView.Two different simulation methods are used for the radical polymerization of nBA: deterministic in Predici and stochastic with mcPolymer. It has been successfully implemented across a wide temperature range. It turns out that the partially different implementation of chain‐length‐dependent termination and β‐scission are important for obtaining ...
Marco Drache +3 more
wiley +1 more source
The Evaluation of Muller Weiss Diseased and Normal Feet on a Three-Dimensional Foot Model
Foot & Ankle Orthopaedics, 2023 Category: Hindfoot; Midfoot/Forefoot Introduction/Purpose: The deformities associated with Müller Weis Disease (MWD) have not been well understood which inevitably impacts clinical and surgical decision making.
Wanjun Gu +5 more
doaj +1 more source
Polyvinylidene Fluoride: Reaction Engineering and Applications
Macromolecular Reaction Engineering, EarlyView.An updated review on polyvinylidene fluoride (PVDF) is presented in this work. Its properties, important areas of application and different methods of production are described, with particular focus on emulsion polymerization, covering the latest advances in formulations and modeling studies.
Burak Hanamirian +2 more
wiley +1 more source