Results 91 to 100 of about 16,459 (288)

Optimization of coiled-tubing drainage gas recovery technology in tight gas field

open access: yesAdvances in Mechanical Engineering, 2017
In this study, research progress on critical liquid-carrying theory was introduced and its applicable conditions were presented and analyzed. The design technique of coiled-tubing drainage gas recovery was proposed, including the design method and ...
Yinghao Shen   +5 more
doaj   +1 more source

Pressurized panel [PDF]

open access: yes, 1973
Large area pressurized meteoroid penetration detector panels with maximum inherent structural rigidity are provided. The panels measure directly the penetration rate in materials to be used in spacecraft.
White, E. C.
core   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

open access: yesAdvanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu   +5 more
wiley   +1 more source

Development and Application of Coiled Tubing Fatigue Analysis Software

open access: yesShiyou jixie
Coiled tubing is easy to break once it becomes fatigue after plastic deformation under the action of tensile force and internal pressure,which seriously affects the safety of oil and gas production.Based on the data of coiled tubing fatigue test,a ...
Tang Qingyuan   +6 more
doaj  

Ten Years of Key Problems Tackling and Practice of Coiled Tubing Drilling Technology in China

open access: yesShiyou jixie, 2019
In-depth research, rapid breakthrough and scale application of coiled tubing operation technology and equipment in China have laid a foundation for the key problems tackling and practice of coiled tubing drilling technology.
He Huiqun   +5 more
doaj  

Toward Wireless Implantable Robotic Systems Driven by Magnetic Field for Personalized Therapy

open access: yesAdvanced Robotics Research, EarlyView.
Robotic materials are playing an increasingly vital role in enabling sensing and actuation at small scales. This perspective highlights recent advances in magnetic materials and magnetically actuated devices for wireless sensing, actuation, and energy harvesting toward implantable robotic systems for closed‐loop therapy.
Yusheng Wang, Ruijian Ge, Xiaoguang Dong
wiley   +1 more source

Application and Trend of Coiled Tubing Digital Operation

open access: yesShiyou jixie
Coiled tubing digital operation technology is the organic integration of coiled tubing technology with computer and internet technologies. It enables data perception, autonomous analysis and automatic control during coiled tubing operations, and plays a ...
Zhang Qian   +6 more
doaj  

Erosion Wear Characteristic of Coiled Tubing in Fracturing Operation

open access: yesShiyou jixie, 2016
In view of few and incomprehensive study on erosion wear characteristic of coiled tubing in fracturing operation,the erosion wear mechanism of spiral section of coiled tubing caused by the fracturing fluid has been studied using Euler-Lagrange method and
鄢标   +4 more
doaj  

Digital twin and contact analysis of ultra-long distance coiled tubing operation structures [version 2; peer review: 1 approved, 2 approved with reservations]

open access: yesDigital Twin
Background Coiled tubing operation is a high-quality operation method that considers both cost and efficiency in current oil and gas well operations. There is a significant difference between the calculation and prediction before operation and the actual
Wenlan Wei   +4 more
doaj   +1 more source

Process for producing tris s(n-methylamino) methylsilane [PDF]

open access: yes, 1984
A method of producing tris (N-methylamine) methylsilane is described including the steps of forming and cooling a liquid solution of methylamine in an inert solvent and under an inert atmosphere at a temperature of about -30 C and slowly adding a ...
Clemons, J. M.   +2 more
core   +1 more source

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