Results 81 to 90 of about 127,095 (306)
Drilling fluid for drilling permafrost rocks
Bulletin of the Tomsk Polytechnic University Geo Assets EngineeringRelevance. The article provides an overview of the problem of drilling wells for oil and gas in conditions of permafrost. When constructing wells for various purposes in conditions of permafrost rocks, special requirements are imposed on the selection of the optimal drilling fluid.
Alexander Ya. Tretyak +2 more
openaire +2 more sources
Automated operational states detection for drilling systems control in critical conditions
, 2013 Critical events in industrial drilling should be overcome by engineers while they maintain safety and achieve their targeted operational drilling plans.
Sabeur, Zoheir, Veres, Galina
core
Nonlinear Viscoelastic Compaction in Sedimentary Basins [PDF]
, 2010 In the mathematical modelling of sediment compaction and porous media flow, the rheological behaviour of sediments is typically modelled in terms of a nonlinear relationship between effective pressure $p_e$ and porosity $\phi$, that is $p_e=p_e(\phi ...
Yang, Xin-She
core +2 more sources
Structural and Chemical Engineering of Sub‐Nanochannel Membranes Toward Ion Selectivity
Advanced Functional Materials, EarlyView.This review summarizes recent advances in structural and chemical engineering of sub‐nanochannels for ion selectivity. We first introduce fundamental ion transport mechanisms within sub‐nanochannels, followed by strategies to tune pore size, geometry, and surface functionalities, categorized into charge‐based, ion‐recognition, hydrophilic bonding, and ...
Yuyu Su +5 more
wiley +1 more source
Discussion on Drilling Fluid Cooling Technology and Equipment
Shiyou jixie, 2016 Excessively high drilling fluid temperature affects not only drilling fluid performance,but also ambient temperature and service life of downhole drilling tools and steering test tools as well as the ROP and borehole stability.
Ma Qingfang
doaj
Displacement Efficiency of Cementing in Eccentric Annulus with Small Clearance
Shiyou jixie, 2022 In the process of cementing in a small annular clearance,if the casing is eccentric seriously,drilling fluid might be detained in the narrow clearance of the annulus generally besides retention on both walls of the annulus.In order to improve the ...
Ma Yue +5 more
doaj
Advanced Functional Materials, EarlyView.A MXene/PEDOT coating enables multimodal functionality and dual‐analyte detection of dopamine and serotonin in flexible microelectrode arrays while enhancing electrophysiological recording quality. The anti‐fouling, low‐impedance interface overcomes key limitations of conventional coatings, providing a robust and versatile platform to investigate the ...
Ilaria Gatti +8 more
wiley +1 more source
An Environmentally-Friendly Drilling Fluid for Stabilizing Shaximiao Formation in Block Zhongjiang
Zuanjingye yu wanjingyeThe Shaximiao formation during drilling has found serious borehole wall collapse and the fallen debris were difficult to be brought out of the hole. To deal with this problem, an environmentally friendly drilling fluid suitable for drilling the Shaximiao
Haixia SHAN +3 more
doaj +1 more source
Optimization of potassium Iignosulfonate drilling fluid lubricating additive [PDF]
, 2015 Оптимізовано змащувальні домішки до лігносульфонатно-калієвої бурової промивальної рідини для буріння свердловин. Із урахуванням результатів лабораторних досліджень підібрано оптимальні і робочі концентрації змащувальних домішок, розроблено рецептуру ...
Верста, О. М. +3 more
core
The impact of vibration mechanism’ installation place on the process of retrieving stuck drill pipe [PDF]
, 2016 Purpose. The present paper studies the dependence of the dynamic oscillatory movements in the area of drill string sticking on the parameters of vibrating mechanism and place of its installation in the heavy weight drill pipe.
Levchuk, K, Moisyshyn, V
core +2 more sources