Results 61 to 70 of about 1,805 (143)

Research of Integrated Long-Term Separate Layer Injection String

Shiyou jixie, 2019
To address the short-term effective water injection due to factors such as casing damage, packer sealing failure, stuck well-washing and failed well measurement and adjustment, an integrated long-term separate layer injection string was developed ...
Peng Taixiang, Shi Jianshe
doaj  

Influence of Siluron® insertion on model drug distribution in the simulated vitreous body

Current Directions in Biomedical Engineering, 2016
Biorelevant in vitro test systems may be helpful to understand the in vivo behaviour of modern intravitreal dosage forms such as implants and injections.
Stein Sandra, Bogdahn Malte, Weitschies Werner, Seidlitz Anne   +3 more
doaj   +1 more source

Novel Deep Penetration Sandblasting Perforating Tool for Ultra-deep Well

Shiyou jixie, 2019
The existing sandblasting perforating tools often have problems such as insufficient contact area between the jet nozzle and the reservoir, serious tool erosion, negative influence of backflow on the jetting performance, and easy pipe stuck by sanding ...
Zhang Jie, Zhang Liangzhu, Li Mingfei, Zou Ning, Dou Yihua   +4 more
doaj  

Insights from an Instrumented Screw Press: Investigating pressure, torque, cage strain and flows dynamic☆

Oilseeds and fats, crops and lipids
This study presents a comprehensive, real-time investigation of the mechanical and flow dynamics within screw press during oil extraction from sunflower kernels and non-dehulled rapeseed.
Carré Patrick, Rousseau Florian, Gouyo Têko, Savoire Raphaëlle   +3 more
doaj   +1 more source

Quantitative Sensitivity Analysis of Key Parameters in Impellers of Vane-Type Mixed-Flow Pumps Under High Gas Content Conditions

Fluids
Gas–liquid multiphase pumps are essential for deep-sea oil and gas production; however, their performance is severely limited under high gas volume fraction (GVF > 30%) conditions due to inefficient energy transfer and flow instability.
Minghao Zhou, Guangtai Shi, Yuanbo Shi, Peng Li   +3 more
doaj   +1 more source

Gas Production Profiling for Horizontal Wells Using DAS and DTS Data

Fuels
Production profiling is essential for optimizing production strategies in oil and gas wells. Conventional production logging tools provide only discrete, time-limited measurements and face operational challenges in long or complex horizontal wells ...
Wenqiang Liu, Dong Li, Yong Huo, Zhengguang Zhao, Zhanwen Fu, Yibo Tian   +5 more
doaj   +1 more source

Analysis on Structural Strength and Open/Close Characteristic of CD70 High-pressure Cock Valve

Shiyou jixie, 2021
The high-pressure cock valve is an indispensable and important component connecting the high-pressure manifold during cementing and fracturing operations in oil fields.
Li Jingcui, Ming Xianggui, Li Liangliang, Yi Xianzhong, He Yuxian, Song Shunping, Yang Wenchuan   +6 more
doaj  

Efficient placement technology of proppants based on structural stabilizers

Petroleum Exploration and Development
Fiber is highly escapable in conventional slickwater, making it difficult to form fiber-proppant agglomerate with proppant and exhibit limited effectiveness. To solve these problems, a novel structure stabilizer (SS) is developed.
Jianchun GUO, Shan REN, Shaobin ZHANG, Su DIAO, Yang LU, Tao ZHANG   +5 more
doaj   +1 more source

Research and application of a novel flocculant combination in the treatment of fracturing flowback fluid

Gongye shui chuli
A novel flocculant combination was developed for the treatment of fracturing flowback fluid of Linxing coalbed methane field, with polysilicic acid polymerized iron sulfate as the coagulant and acrylamide and acrylic acid-1,2-ethylenetriammonium chloride
ZHAO Yingqiu, XU Yue, ZHOU Qili, SHI Jinzhuo, XU Hongzhu, SUN Jinlong   +5 more
doaj   +1 more source

Electromagnetic mixed convective flow of dusty hyperbolic tangent hybrid nanofluid over a stretching surface: A quadratic regression analysis using RSM

International Journal of Thermofluids
This article investigates the flow dynamics of electrically conducting dusty hyperbolic tangent fluid over a stretching sheet with thermal radiation and heat source effects.
M V Varsha, B N Hanumagowda, K M Pavithra, Yashwantsinh Jadeja, Ankur Kulshreshta, S V K Varma, Chander Prakash, K Karthik   +7 more
doaj   +1 more source