Results 21 to 30 of about 1,345,286 (303)
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
doaj +1 more source
Super-amphiphobic, strong self-cleaning and high-efficiency water-based drilling fluids
Petroleum Exploration and Development, 2020 Based on the amphiphobic theory on underground rock surface, a super-amphiphobic agent is developed and evaluated which can form nano-micro papilla structure on rock, filter cake and metal surface, reduce surface free energy, prevent collapse, protect ...
Guancheng JIANG +4 more
doaj +1 more source
Invasion Analysis of Oil-Based Drilling Fluid Based on NMR Experiment
Cejing jishu, 2023 In order to clarify the intrusion characteristics of deep and ultra-deep oil-based drilling fluids in the southern margin of Junggar basin and its influence on nuclear magnetic resonance (NMR) logging, NMR experiments are conducted to analyze the ...
LIN Jingqi +5 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
EnergiesDepleted hydrocarbon reservoirs (DHRs), particularly depleted gas reservoirs (DGRs), are increasingly regarded as promising candidates for geologic carbon storage (GCS).
Hakan Alkan +7 more
doaj +1 more source
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
doaj +1 more source
Rheological Parameter Calibration of Online Drilling Fluid Property Monitoring System
Zuanjingye yu wanjingyeIn drilling operations, accurate and fast measurement of drilling fluid rheology is essential for safe and efficient drilling. Pipe flow method can monitor the rheological properties of drilling fluids in a real time manner, wall slip phenomenon can ...
Liujun TU +7 more
doaj +1 more source
Development and Application of Oil-Based Thermo-Responsive Gel Lost Circulation Material SBR−g−PSA
GelsLost circulation of oil-based drilling fluids (OBDFs) in deep, fractured formations remains a critical challenge, primarily due to the poor retention and low pressure-bearing capacity of conventional materials on oil-wet rock surfaces. To bridge this gap,
Zhimin Liu +6 more
doaj +1 more source
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