Results 21 to 30 of about 127,095 (306)
Journal of Spectroscopy, 2013 After synthesis of mixed fatty acid triethanolamine ester surfactant based on animal and vegetable mixed oils, the reaction solution was added into 4% (wt/wt) liquid nitric acid or 9% (wt/wt) solid nitric acid as eliminating fluorescent agent continuing ...
Feng-shan Zhou +6 more
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An experimental drilling apparatus used for evaluating drilling risks related to natural gas hydrate
MethodsX, 2020 Some countries are trying to drill and exploit natural gas hydrate (NGH). However, the disturbance effects of drilling on the stability of NGH-bearing sediments are unclear.
Tian-Jia Huang +4 more
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Determination of the suitable drilling operating parameters in different geological formations El-Sharara Oil Field (South-Western Libya) [PDF]
, 2018 Purpose. The objective of this study is to determine the best operating conditions for the most notable drilling parameters (i.e. weight on bit (WOB), rotary drilling speed (RPM), and characteristics of drilling fluid) using field data obtained from El-
Abdellah, W, Boghdady, G, Sayed, M
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Heliyon, 2020 An enhanced drill bit combining high pressure fluid jetting with a conventional rotary drilling system incorporating a tailored drilling fluid was designed to improve drilling performance in hard crystalline rock.
Timon Echt +2 more
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Research of the pulsating flow of drilling fluid in the drill string
Technology audit and production reserves, 2022 The object of research is the pulsating flow of drilling fluid in the drill string. One of the most problematic places is pressure loss due to friction forces distributed along the length of the flow and concentrated in its nodes (threaded joints and pipe bends).
Viktor Svitlytskyi, Irina Boshkova
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Formulation and Environmental Impact Evaluation of Walnut and Soya Bean Oil Based Drilling Fluid [PDF]
, 2016 One of the oil and gas hazard that associated with drilling operation is oil based drilling fluid and its associated cutting disposition. It is highly imperative for policy maker to propagate the use of environmental friendly oil based mud for drilling ...
Adesina, F. C. +2 more
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Influence of Platform Motion to Pressure Fluctuation of Downhole Drilling Fluid
Shiyou jixie, 2022 Riserless drilling technology controls the liquid level of drilling fluid in the rotary blowout preventer by controlling the rotating speed and flow rate of the seabed drilling fluid lift pump,so as to control the wellbore pressure.In view of the ...
Wang Chuan +5 more
doaj
Modeling pellet impact drilling process [PDF]
, 1999 The paper describes pellet impact drilling which could be used to increase the drilling speed and the rate of penetration when drilling hard rocks. Pellet impact drilling implies rock destruction by metal pellets with high kinetic energy in the immediate
Kovalev, Artem Vladimirovich +3 more
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Research and Application of the Oil-absorbing Viscous Polymer for Oil-Based Drilling Fluid Plugging
Zuanjingye yu wanjingyeLost circulation materials (LCMs), after being wetted by oil-based drilling fluids, have their sliding ability decreased and retention ability increased, causing them to be easy to flow back from the fractures through which the mud is lost and ...
Wentang LIU +6 more
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Assessment of zonal isolation risk to changes in design parameters [PDF]
, 2017 The Well Containment Screening Tool (WCST) focuses on well integrity evaluation after well control incident. The WCST favors a greater wall thickness and, hence, a narrower cementing annulus, potentially increasing the risk of cement loss.
Zhang, Huidong, active 21st century
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