Results 61 to 70 of about 6,364,937 (291)

Evaluating candidate lost circulation materials for geothermal drilling

open access: yes, 1986
Sandia National Laboratories' Geothermal Technology Development Division is working to advance the state of the art of lost circulation prevention and control. For this purpose, a large-scale lost Circulation Test Facility was designed and built.
Loeppke, G.
core  

Application of new eco-friendly LCMs for combating the lost circulation in heavy-weight and oil-based mud

open access: yes, 2018
This study investigates the effectiveness of different lost circulation materials (LCMs) in controlling the lost circulation of heavy-weight and oil-based mud.
Mohammadjavad Ameri Shahrabi   +2 more
core   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

open access: yesAdvanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska   +2 more
wiley   +1 more source

Design of Lost Circulation Control Test Device Simulating Annulus Flow

open access: yesShiyou jixie, 2019
The three dynamic lost circulation simulation methods of narrow groove flow of the slit plate, indoor-build wellbore annulus and agitator stirring were analyzed and compared. It is found that these three simulation methods are not practical in the indoor
Jiang Zhenxin   +3 more
doaj  

Laboratory Study on a New Composite Plugging Material with High Bearing Strength and High-Temperature Resistance

open access: yesJournal of Chemistry, 2019
The reservoir in the Central Tarim Basin is a typical high-pressure fracture-vuggy carbonate reservoir with high temperatures, which easily leads to drilling fluid losses and the high-temperature carbonate.
Xiaoming Su   +4 more
doaj   +1 more source

Updated Classification of Lost Circulation Treatments and Materials with an Integrated Analysis and their Applications

open access: yes, 2018
Lost circulation materials (LCM\u27s) have been widely used to avoid or stop losses. Due to a large number of currently available materials, treatments, and their different applications, classification of them is very important. The most recent materials
Flori, Ralph E.   +11 more
core   +1 more source

TacScope: A Miniaturized Vision‐Based Tactile Sensor for Surgical Applications

open access: yesAdvanced Robotics Research, EarlyView.
TacScope is a compact, vision‐based tactile sensor designed for robot‐assisted surgery. By leveraging a curved elastomer surface with pressure‐sensitive particle redistribution, it captures high‐resolution 3D tactile feedback. TacScope enables accurate tumor detection and shape classification beneath soft tissue phantoms, offering a scalable, low‐cost ...
Md Rakibul Islam Prince   +3 more
wiley   +1 more source

Lost circulation in drilling: Mechanisms, materials, and future directions for HPHT and energy-transition wells

open access: yesUnconventional Resources
Lost circulation is one of the most persistent and costly challenges in drilling operations, particularly under high-pressure and high-temperature conditions and in fractured carbonate reservoirs. Despite decades of research, no universal solution exists,
Ali Mahmoud, Rahul Gajbhiye
doaj   +1 more source

Lost circulation technology workshop, October 9-10, 1984 [PDF]

open access: yes, 1985
This report summarizes the presentations and discussions of a workshop on lost circulation technology. The workshop identified and defined lost circulation problem areas in field operations, materials, mud effects, and standards.
Caskey, B.C. (ed.)
core  

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

open access: yesAdvanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source

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