Results 51 to 60 of about 24,031,090 (295)
RHEOLOGICAL STUDY OF JATROPHA CURCAS OIL AS OIL BASED FLUID IN DRILLING OPERATION [PDF]
, 2011 The drilling fluid plays several essential functions in drilling wells. If the mud properties (physical, chemical and rheology properties) are incorrect, safety and economics may be severely compromised.
ABDUL RAHMAN, ROZITA BANU
core
On the Stability of Oil-Based Drilling Fluid: Effect of Oil-Water Ratio
, 2020 Drilling fluids are complex mixtures of natural and synthetic chemical compounds used to cool and lubricate the drill bit, clean the wellbore, carry drilled cuttings to the surface, control formation pressure, and improve the function of the drill string
Titus Ntow Ofei +9 more
core +1 more source
Advanced Science, EarlyView.A high‐power hybrid nanogenerator (HP‐HNG) with multi‐degree‐of‐freedom mechanical coupling is reported, integrating multi‐directional wave energy for output to achieve 1 + 1 > 2 energy harvesting. The HP‐HNG achieves a peak output power of 0.764 W, corresponding to a peak power density of 127.303 W m−3. At a wave frequency of 1 Hz, the HP‐HNG delivers
Shuai Ding +9 more
wiley +1 more source
Effects of Oil-Based and Water-Based Drilling Fluids on Fracture Propagation Pressure
Zuanjingye yu wanjingyeLost circulation and wellbore instability have been encountered in drilling the Permian fractured formations in the sag west to the well Pen-1 in the Junggar Basin.
Xuyang YAO +5 more
doaj +1 more source
Advanced Science, EarlyView.A mechanically activated SynNotch reporter platform enables detection of force transmission through receptors as they mediate immune cell interactions. Targeting CD40 on B cells and TCR on T cells records force‐induced reporter activation across 2D coculture, 3D organoid, and implanted in mice, which also reveal force‐amplification of immune receptor ...
Menglan Li +9 more
wiley +1 more source
Advanced Science, EarlyView.Matrix stiffness directs mesenchymal stem cell lineage commitment through PIEZO1‐dependent activation of the SP1/STC2 pathway. Stiff matrices favor osteogenesis and suppress adipogenesis, whereas the loss of PIEZO1 function impairs early bone formation. STC2 retains lineage‐regulatory activity even when PIEZO1 is inactive.
Shuo Zhang +12 more
wiley +1 more source
Amphibious Movement of Microrobots Inspired by Water Spiders
Advanced Science, EarlyView.Inspired by the water strider, a novel microrobot is designed to maintain amphibious mobility in complex environments. It retains the ability to traverse the air‐liquid interface and perform directional movement within sophisticated, multifaceted environments, including complex gastric wall structures, with precise controllability.
Xiao Hu +7 more
wiley +1 more source
Zuanjingye yu wanjingyeBasic zinc carbonate is a commonly used sulfide scavenger for drilling high-sulfide content formations with water-based drilling fluids, its ability to remove sulfide and the mechanism of sulfide removal in oil-based drilling fluids are still not well ...
Zhen ZHANG +4 more
doaj +1 more source
, 2023 Problems such as well loss and collapses in deep shale gas drilling are most often due to the development of cracks in the shale formation, resulting in significant leaks of drilling fluid, the sticking and burrowing of drilling tools, and other ...
Zhenzhen Shen +6 more
core +1 more source
Advances in Aptamer Drug Delivery Systems for Treatment of Glioblastoma
Advanced Science, EarlyView.Aptamers have remarkable recognition capacity which is suitable for assisting drug delivery for GB. This review demonstrates that aptamers have great potential as targeted therapeutic carriers, conjugated to various therapeutic carriers, using a range of conjugation strategies and chemistries.
Alexandra R. Paul +4 more
wiley +1 more source