Results 121 to 130 of about 10,595 (295)

Formulation and Evaluation of Synthetic Drilling Mud for Low Temperature Regions

Covenant Journal of Engineering Technology, 2017
The temperate world such American and Canada are extensively increasing environmental legislations against oil-based muds and increasing exploratory activities in the offshore, it imperative to develop an oil based drilling muds that have resistance to ...
Fadairo Adesina, Olutola Patrick, Ogunkunle Temitope, Oladepo Adebowale   +3 more
doaj  

Designing Orthogonal‐Arc Trajectories for Horizontal Wells to Reduce Drilling Cost in Development of Shale Oil/Gas Reservoirs

Energy Science &Engineering, EarlyView.
Designing 3‐dimensional (3D) horizontal well trajectories is critical for enhancing drilling efficiency in shale reservoirs. This paper proposes an innovative Orthogonal‐Arc Trajectory (OAT) for 3D horizontal wells, which employs a single constant curvature in the curved section.
Jun Zhang, Boyun Guo, Sohail Nawab
wiley   +1 more source

Preparation and Application of a Block Removing Fluid for Eliminating Reservoir Contamination by High Density Oil-Based Drilling Fluids

Zuanjingye yu wanjingye
High density oil-based drilling fluids have been widely used in the well drilling operation due to their high stability and inhibitive capacity. However, barite filter cakes formed after filtration and migration of the high density oil-based drilling ...
Zhifeng LUO, Ke LI, Bingsen YAN
doaj   +1 more source

Inconsistent Transcriptomic Responses to Hexabromocyclododecane in Japanese Quail: A Comparative Analysis of Results From Four Different Study Designs

Environmental Toxicology and Chemistry, EarlyView.
Abstract Efforts to use transcriptomics for toxicity testing have classically relied on the assumption that chemicals consistently produce characteristic transcriptomic signatures that are reflective of their mechanism of action. However, the degree to which transcriptomic responses are conserved across different test methodologies has seldom been ...
Paul Béziers, Elena Legrand, Emily Boulanger, Niladri Basu, Jessica D. Ewald, Paula Henry, Markus Hecker, Jianguo Xia, Natalie Karouna‐Renier, Doug Crump, Jessica Head   +10 more
wiley   +1 more source

An Experimental Study to Assessing the Efficacy of Oil to Prevent Differential Stuck Pipe Incidents in Zubair Oil Field, Southern Iraq

Iraqi Geological Journal
This study focuses on the important role of drilling mud in successful drilling operations, particularly in preventing and treating differential stuck pipes. Differential pipe sticking (DSP) is a common challenge when drilling through a pay zone
Zainab Aleqabi, Ayad Alhaleem
doaj   +1 more source

Arterial Perivascular Space‐Mediated Solute Transport in the Mouse Brain

Exploration, EarlyView.
The mechanisms underlying solute clearance from the brain parenchyma remain debated, with competing hypotheses involving bulk cerebrospinal fluid flow versus perivascular transport. Using multimodal in vivo imaging and computational modeling in mice, this study demonstrates that arterial pulsation drives bidirectional solute movement within the ...
Shiyong Li, Ye Wang, Guangyu Jia, Yamei Yu, Zhe Zhang, Qi Wang, Kaelyn V. Becker, Jonathan W. Engle, Dawei Jiang, Weibo Cai   +9 more
wiley   +1 more source

Effect of Additives on Rheological Properties and Fluid Loss of Oil Based Drilling Fluids

Annual Transactions of the Nordic Rheology Society
Oil-based drilling fluids are often used to drill geothermal or petroleum wells in hot locations. These fluids normally consist of dispersion of organophilic clays in water-in-oil emulsions. If loss of fluid to the formation is expected, fibres or other additives for fluid loss prevention are added.
Feneuil, Blandine Fleur Prudence, Ytrehus, Jan David, Saasen, Arild   +2 more
openaire   +3 more sources

A Novel Thermo-Thickening Oil-Based Drilling Fluid Based on Composite Thickener Under High Temperature and Pressure

Energies
Under high-temperature conditions in deep well formations, oil-based drilling fluids tend to show degraded rheological properties and reduced suspension capacity, which may impair wellbore cleanliness and circulation pump pressure and hinder drilling. To
Weijie Chen, Xiaoming Tang, Leilei Wang, Hong Ma, Anliang Chen, Jian Zhang, Weian Huang, Guanzheng Zhuang, Hanyi Zhong, Xianbin Zhang   +9 more
doaj   +1 more source

Investigation of Cutting Tools and Working Conditions Effects when Cutting Ti-6al-4V using Vegetable Oil-Based Cutting Fluids

, 2015
Power consumed in metal cutting is typically converted into heat near the cutting tool edge. Cutting fluids are then provided to a cutting zone in order to improve the tribological characteristics of machining processes and to dissipate the generated ...
Gariani, Salah, Shyha, Islam, Shyha, I., Gariani, S., Bhatti, M.   +4 more
core   +1 more source

Nutritional, Functional, and Anti‐Hypercholesterolemic Properties of Sourdough Breads From Unripe Plantain, Tiger Nut, and Fenugreek Flours

Food Chemistry International, EarlyView.
Composite sourdough breads were developed from blends of unripe plantain, tiger nut, and fenugreek flours. Optimized formulations improved pasting stability and enhanced texture, producing softer more elastic crumbs. The enriched breads contained higher dietary fiber and bioactive compounds, and significantly reduced serum cholesterol markers ...
Mary T. Ademosun, Olufunmilayo S. Omoba, Ganiyu Oboh, Adedamola I. Akinyede, Rukayat O. Awolola   +4 more
wiley   +1 more source