Results 21 to 30 of about 1,805 (143)

Research progress and application prospect of functional adhesive materials in the field of oil and gas drilling and production

open access: yesPetroleum Exploration and Development, 2023
By summarizing the composition, classification, and performance characterization of functional adhesive materials, the adhesion mechanisms of functional adhesive materials, such as adsorption/surface reaction, diffusion, mechanical interlocking, and ...
Jinsheng SUN   +6 more
doaj   +1 more source

Frontier Enhanced Oil Recovery (EOR) Research on the Application of Imbibition Techniques in High-Pressure Forced Soaking of Hydraulically Fractured Shale Oil Reservoirs

open access: yesGeofluids, 2021
Shale reservoirs are characterized by low porosity and low permeability, and volume fracturing of horizontal wells is a key technology for the benefits development of shale oil resources. The results from laboratory and field tests show that the backflow
Guanqun Li   +4 more
doaj   +1 more source

On Flow Characteristics and Interpretative Methods of Oil-Water Two-Phase Flow in Slightly Negative Angle Deviated Pipes

open access: yesCejing jishu, 2023
The difference of flow characteristics makes the conventional production logging interpretation model unable to accurately predict the true flowrate of each phase in horizontal wells.
QIN Hao   +6 more
doaj   +1 more source

Numerical simulation of post-fracturing flowback considering fracturing fluid imbibition

open access: yesShenzhen Daxue xuebao. Ligong ban, 2023
Fracturing fluid flowback is a key step in the process of hydraulic fracturing, and the imbibition of fracturing fluid in unconventional tight reservoirs cannot be ignored.
WANG Jiwei   +4 more
doaj   +1 more source

Microbial analysis of backflowed injection water from a nitrate-treated North Sea oil reservoir

open access: yesJournal of Industrial Microbiology & Biotechnology, 2009
Reservoir souring in offshore oil fields is caused by hydrogen sulphide (H(2)S) produced by sulphate-reducing bacteria (SRB), most often as a consequence of sea water injection. Biocide treatment is commonly used to inhibit SRB, but has now been replaced by nitrate treatment on several North Sea oil fields.
Gunhild, Bødtker   +4 more
openaire   +2 more sources

Quantifying the Effect of De-Emulsifiers on Acid Treatment in Carbonate Formations

open access: yesEnergies, 2021
Matrix acidizing is a highly successful, effective, and relatively inexpensive approach to enhancing well productivity in carbonate formations. Accordingly, there has been little motivation to address the ways to optimize the acid stimulation process ...
Mohamed Elsafih   +2 more
doaj   +1 more source

Numerical investigation of static characteristic of a tilting-pad journal bearing using shear stress transport model and air backflow

open access: yesAdvances in Mechanical Engineering, 2019
Numerical simulations are important in bearing designs and should be in accordance with real working conditions. Two details are analyzed for the numerical simulations with a three-dimensional model of a large tilting-pad journal bearing included.
Aoshuang Ding   +3 more
doaj   +1 more source

Driving Waveform Design with Rising Gradient and Sawtooth Wave of Electrowetting Displays for Ultra-Low Power Consumption

open access: yesMicromachines, 2020
As a kind of paper-like display technology, power consumption is a very important index for electrowetting displays (EWDs). In this paper, the influence of driving waveforms on power consumption of the EWDs is analyzed, and a driving waveform with rising
Wei Li   +7 more
doaj   +1 more source

Design of Multi-DC Overdriving Waveform of Electrowetting Displays for Gray Scale Consistency

open access: yesMicromachines, 2023
Gray scale consistency in pixels was extremely important for electrowetting displays (EWDs). However, traditional electrowetting display driving waveforms could not obtain a pixel aperture ratio consistency, which led to the occurrence of gray ...
Yijian Xu   +8 more
doaj   +1 more source

Experimental and OLGA Modeling Investigation for Slugging in Underwater Compressed Gas Energy Storage Systems

open access: yesApplied Sciences, 2023
Underwater compressed gas energy storage (UW-CGES) holds significant promise as a nascent and viable energy storage solution for a diverse range of coastal and offshore facilities.
Chengyu Liang   +3 more
doaj   +1 more source

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