Results 81 to 90 of about 6,364,937 (291)
Lost Circulation Problems and Solutions
, 2014 The basic outline of the project focuses on problems seen in the field due to lost circulation of drilling fluids in the wellbore. This is one of the biggest contributors to non-productive time while drilling a well. In the oil industry, any time lost is
Thibodeaux, Garrett
core
Investigation on Lost Circulation Materials (LCM) by Palm Oil Fronds [PDF]
, 2011 This report discuss about the method of the invention and several studies about lost circulation material. The objective on this project is to proposed palm oil fronds as drilling fluid additive to control the lost circulation during the drilling ...
Mohamad Yusak, Norazwan
core
Organoid Brain‐Machine‐Interface Devices for Central Nervous System Repair
Advanced Science, EarlyView.We envision organoid brain‐machine‐interface (Organoid‐BMI) devices as new biohybrid bidirectional communication pathways to connect the human CNS and the external world for personalized CNS repair and regeneration. ABSTRACT Central nervous system (CNS) repair and regeneration suffer from tremendous clinical challenges due to current limitations in ...
Yantao Xing +10 more
wiley +1 more source
Research in lost circulation control for geothermal wells
, 1987 This paper reviews recent progress at Sandia National Laboratories in the area of lost circulation control for geothermal wells. The Lost Circulation Program has three major elements: (1) Detection and characterization of loss zones, (2) Development of ...
Ortega, A., Loeppke, G.E., Givler, R.C.
core
Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review
Advanced Science, EarlyView.Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh +8 more
wiley +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
Advanced Science, EarlyView.Whole‐blood biomimetic engineering transforms liquid metal nanoparticles into a tripartite immunotherapeutic platform that orchestrates regulatory T‐cell depletion, photothermal‐induced immunogenic cell death, and activation of the stimulator of interferon genes pathway.
Nina Sang, Eijiro Miyako
wiley +1 more source
Advanced Science, EarlyView.Endothelial miR‐15a/16‐1 deletion promotes long‐term recovery after traumatic brain injury by restoring SYNE1 expression. Enhanced endothelial SYNE1 preserves vascular integrity, protects white and gray matter, and improves neurological function. The endothelial miR‐15a/16‐1–SYNE1 axis emerges as a key regulator of neurovascular repair and a potential ...
Shun Li +17 more
wiley +1 more source
Meitian dizhi yu kantanObjective and Method Drilling operations in the Changqing area face several challenges in lost circulation, including complex types, significantly different characteristics, and difficulty in designing plugging formulations. To address these issues, this
Huan SUN +8 more
doaj +1 more source
Lost circulation in geothermal wells: research and development status [PDF]
, 1983 A multifaceted program directed at understanding and helping to solve the lost circulation problem is described. The program involves characterizing loss zones, developing an analytic fluid-dynamics model of zone plugging, screening lost circulation ...
Caskey, B. C., Loeppke, G. E.
core